Fix lint and jest issues

Update ts-http-runtime dependency

.licenses/npm/@typespec/ts-http-runtime.dep.yml

@@ -1,6 +1,6 @@
 ---
 name: "@typespec/ts-http-runtime"
-version: 0.3.2
+version: 0.3.5
 type: npm
 summary: Isomorphic client library for making HTTP requests in node.js and browser.
 homepage: https://github.com/Azure/azure-sdk-for-js/blob/main/sdk/core/ts-http-runtime/

.licenses/npm/fast-xml-builder.dep.yml

@@ -0,0 +1,32 @@
+---
+name: fast-xml-builder
+version: 1.1.4
+type: npm
+summary: Build XML from JSON without C/C++ based libraries
+homepage:
+license: mit
+licenses:
+- sources: LICENSE
+  text: |
+    MIT License
+
+    Copyright (c) 2026 Natural Intelligence
+
+    Permission is hereby granted, free of charge, to any person obtaining a copy
+    of this software and associated documentation files (the "Software"), to deal
+    in the Software without restriction, including without limitation the rights
+    to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+    copies of the Software, and to permit persons to whom the Software is
+    furnished to do so, subject to the following conditions:
+
+    The above copyright notice and this permission notice shall be included in all
+    copies or substantial portions of the Software.
+
+    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+    IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+    FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+    AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+    LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+    OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+    SOFTWARE.
+notices: []

.licenses/npm/fast-xml-parser.dep.yml

@@ -1,6 +1,6 @@
 ---
 name: fast-xml-parser
-version: 5.3.3
+version: 5.5.6
 type: npm
 summary: Validate XML, Parse XML, Build XML without C/C++ based libraries
 homepage:

.licenses/npm/minimatch.dep.yml

@@ -1,9 +1,9 @@
 ---
 name: minimatch
-version: 3.1.2
+version: 3.1.5
 type: npm
 summary: a glob matcher in javascript
-homepage: 
+homepage:
 license: isc
 licenses:
 - sources: LICENSE

.licenses/npm/path-expression-matcher.dep.yml

@@ -0,0 +1,32 @@
+---
+name: path-expression-matcher
+version: 1.1.3
+type: npm
+summary: Efficient path tracking and pattern matching for XML/JSON parsers
+homepage: https://github.com/NaturalIntelligence/path-expression-matcher#readme
+license: mit
+licenses:
+- sources: LICENSE
+  text: |
+    MIT License
+
+    Copyright (c) 2024
+
+    Permission is hereby granted, free of charge, to any person obtaining a copy
+    of this software and associated documentation files (the "Software"), to deal
+    in the Software without restriction, including without limitation the rights
+    to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+    copies of the Software, and to permit persons to whom the Software is
+    furnished to do so, subject to the following conditions:
+
+    The above copyright notice and this permission notice shall be included in all
+    copies or substantial portions of the Software.
+
+    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+    IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+    FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+    AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+    LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+    OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+    SOFTWARE.
+notices: []

.licenses/npm/undici.dep.yml

@@ -1,6 +1,6 @@
 ---
 name: undici
-version: 6.23.0
+version: 6.24.1
 type: npm
 summary: An HTTP/1.1 client, written from scratch for Node.js
 homepage: https://undici.nodejs.org

README.md

@@ -18,7 +18,7 @@ See ["Caching dependencies to speed up workflows"](https://docs.github.com/en/ac
 ### ⚠️ Important changes
 
 > [!IMPORTANT]
-> `actions/cache@v5` runs on the Node.js 24 runtime and requires a minimum Actions Runner version of `2.327.1`.
+> `actions/cache@v6` runs on the Node.js 24 runtime and requires a minimum Actions Runner version of `2.327.1`.
 > If you are using self-hosted runners, ensure they are updated before upgrading.
 
 The cache backend service has been rewritten from the ground up for improved performance and reliability. [actions/cache](https://github.com/actions/cache) now integrates with the new cache service (v2) APIs.
@@ -38,6 +38,11 @@ Upgrading to the recommended versions will not break your workflows.
 
 Read more about the change & access the migration guide: [reference to the announcement](https://github.com/actions/cache/discussions/1510).
 
+### v6
+
+* Updated `@actions/cache`, `@actions/core`, `@actions/exec` to latest major versions
+* Migrated to ESM module system
+
 ### v5
 
 * Updated to node 24
@@ -78,7 +83,7 @@ Create a workflow `.yml` file in your repository's `.github/workflows` directory
 
 If you are using this inside a container, a POSIX-compliant `tar` needs to be included and accessible from the execution path.
 
-Note: `actions/cache@v5` runs on Node.js 24 and requires a minimum Actions Runner version of `2.327.1`.
+Note: `actions/cache@v6` runs on Node.js 24 and requires a minimum Actions Runner version of `2.327.1`.
 
 If you are using a `self-hosted` Windows runner, `GNU tar` and `zstd` are required for [Cross-OS caching](https://github.com/actions/cache/blob/main/tips-and-workarounds.md#cross-os-cache) to work. They are also recommended to be installed in general so the performance is on par with `hosted` Windows runners.
 
@@ -127,7 +132,7 @@ jobs:
 
     - name: Cache Primes
       id: cache-primes
-      uses: actions/cache@v5
+      uses: actions/cache@v6
       with:
         path: prime-numbers
         key: ${{ runner.os }}-primes
@@ -158,7 +163,7 @@ jobs:
 
     - name: Restore cached Primes
       id: cache-primes-restore
-      uses: actions/cache/restore@v5
+      uses: actions/cache/restore@v6
       with:
         path: |
           path/to/dependencies
@@ -169,7 +174,7 @@ jobs:
     .
     - name: Save Primes
       id: cache-primes-save
-      uses: actions/cache/save@v5
+      uses: actions/cache/save@v6
       with:
         path: |
           path/to/dependencies
@@ -224,7 +229,7 @@ A cache key can include any of the contexts, functions, literals, and operators
 For example, using the [`hashFiles`](https://docs.github.com/en/actions/learn-github-actions/expressions#hashfiles) function allows you to create a new cache when dependencies change.
 
 ```yaml
-  - uses: actions/cache@v5
+  - uses: actions/cache@v6
     with:
       path: |
         path/to/dependencies
@@ -242,7 +247,7 @@ Additionally, you can use arbitrary command output in a cache key, such as a dat
       echo "date=$(/bin/date -u "+%Y%m%d")" >> $GITHUB_OUTPUT
     shell: bash
 
-  - uses: actions/cache@v5
+  - uses: actions/cache@v6
     with:
       path: path/to/dependencies
       key: ${{ runner.os }}-${{ steps.get-date.outputs.date }}-${{ hashFiles('**/lockfiles') }}
@@ -264,7 +269,7 @@ Example:
 steps:
   - uses: actions/checkout@v6
 
-  - uses: actions/cache@v5
+  - uses: actions/cache@v6
     id: cache
     with:
       path: path/to/dependencies
@@ -296,7 +301,7 @@ jobs:
 
       - name: Cache Primes
         id: cache-primes
-        uses: actions/cache@v5
+        uses: actions/cache@v6
         with:
           path: prime-numbers
           key: primes
@@ -307,7 +312,7 @@ jobs:
 
       - name: Cache Numbers
         id: cache-numbers
-        uses: actions/cache@v5
+        uses: actions/cache@v6
         with:
           path: numbers
           key: primes
@@ -323,7 +328,7 @@ jobs:
 
       - name: Cache Primes
         id: cache-primes
-        uses: actions/cache@v5
+        uses: actions/cache@v6
         with:
           path: prime-numbers
           key: primes

RELEASES.md

@@ -25,6 +25,18 @@
 
 ## Changelog
 
+### 6.0.0
+
+- Updated `@actions/cache` to ^6.0.1, `@actions/core` to ^3.0.1, `@actions/exec` to ^3.0.0, `@actions/io` to ^3.0.2
+- Migrated to ESM module system
+- Upgraded Jest to v30 and test infrastructure to be ESM compatible
+
+### 5.0.4
+
+- Bump `minimatch` to v3.1.5 (fixes ReDoS via globstar patterns)
+- Bump `undici` to v6.24.1 (WebSocket decompression bomb protection, header validation fixes)
+- Bump `fast-xml-parser` to v5.5.6
+
 ### 5.0.3
 
 - Bump `@actions/cache` to v5.0.5 (Resolves: https://github.com/actions/cache/security/dependabot/33)

__tests__/actionUtils.test.ts

@@ -1,25 +1,66 @@
-import * as cache from "@actions/cache";
-import * as core from "@actions/core";
+import { afterAll, beforeEach, expect, jest, test } from "@jest/globals";
 
-import { Events, RefKey } from "../src/constants";
-import * as actionUtils from "../src/utils/actionUtils";
-import * as testUtils from "../src/utils/testUtils";
+// Mock @actions/core
+jest.unstable_mockModule("@actions/core", () => ({
+    getInput: jest.fn((name: string, options?: { required?: boolean }) => {
+        const val =
+            process.env[`INPUT_${name.replace(/ /g, "_").toUpperCase()}`] || "";
+        if (options && options.required && !val) {
+            throw new Error(`Input required and not supplied: ${name}`);
+        }
+        return val.trim();
+    }),
+    setOutput: jest.fn(),
+    setFailed: jest.fn(),
+    info: jest.fn(),
+    warning: jest.fn(),
+    debug: jest.fn(),
+    error: jest.fn(),
+    saveState: jest.fn(),
+    getState: jest.fn(() => ""),
+    isDebug: jest.fn(() => false),
+    exportVariable: jest.fn(),
+    addPath: jest.fn(),
+    group: jest.fn((name: string, fn: () => Promise<unknown>) => fn()),
+    startGroup: jest.fn(),
+    endGroup: jest.fn()
+}));
 
-jest.mock("@actions/core");
-jest.mock("@actions/cache");
+// Mock @actions/cache
+jest.unstable_mockModule("@actions/cache", () => ({
+    restoreCache: jest.fn(),
+    saveCache: jest.fn(),
+    isFeatureAvailable: jest.fn(() => true),
+    ReserveCacheError: class ReserveCacheError extends Error {
+        constructor(message: string) {
+            super(message);
+            this.name = "ReserveCacheError";
+        }
+    }
+}));
+
+const core = await import("@actions/core");
+const cache = await import("@actions/cache");
+const { Events, RefKey } = await import("../src/constants");
+const actionUtils = await import("../src/utils/actionUtils");
+const testUtils = await import("../src/utils/testUtils");
 
 let pristineEnv: NodeJS.ProcessEnv;
 
-beforeAll(() => {
-    pristineEnv = process.env;
-    jest.spyOn(core, "getInput").mockImplementation((name, options) => {
-        return jest.requireActual("@actions/core").getInput(name, options);
-    });
-});
-
 beforeEach(() => {
-    jest.resetModules();
-    process.env = pristineEnv;
+    pristineEnv = { ...process.env };
+    jest.clearAllMocks();
+    (core.getInput as jest.Mock).mockImplementation(
+        (name: string, options?: { required?: boolean }) => {
+            const val =
+                process.env[`INPUT_${name.replace(/ /g, "_").toUpperCase()}`] ||
+                "";
+            if (options && options.required && !val) {
+                throw new Error(`Input required and not supplied: ${name}`);
+            }
+            return val.trim();
+        }
+    );
     delete process.env[Events.Key];
     delete process.env[RefKey];
 });
@@ -47,74 +88,46 @@ test("isGhes returns false when server url is github.com", () => {
 });
 
 test("isExactKeyMatch with undefined cache key returns false", () => {
-    const key = "linux-rust";
-    const cacheKey = undefined;
-
-    expect(actionUtils.isExactKeyMatch(key, cacheKey)).toBe(false);
+    expect(actionUtils.isExactKeyMatch("linux-rust", undefined)).toBe(false);
 });
 
 test("isExactKeyMatch with empty cache key returns false", () => {
-    const key = "linux-rust";
-    const cacheKey = "";
-
-    expect(actionUtils.isExactKeyMatch(key, cacheKey)).toBe(false);
+    expect(actionUtils.isExactKeyMatch("linux-rust", "")).toBe(false);
 });
 
 test("isExactKeyMatch with different keys returns false", () => {
-    const key = "linux-rust";
-    const cacheKey = "linux-";
-
-    expect(actionUtils.isExactKeyMatch(key, cacheKey)).toBe(false);
+    expect(actionUtils.isExactKeyMatch("linux-rust", "linux-")).toBe(false);
 });
 
 test("isExactKeyMatch with different key accents returns false", () => {
-    const key = "linux-áccent";
-    const cacheKey = "linux-accent";
-
-    expect(actionUtils.isExactKeyMatch(key, cacheKey)).toBe(false);
+    expect(actionUtils.isExactKeyMatch("linux-áccent", "linux-accent")).toBe(
+        false
+    );
 });
 
 test("isExactKeyMatch with same key returns true", () => {
-    const key = "linux-rust";
-    const cacheKey = "linux-rust";
-
-    expect(actionUtils.isExactKeyMatch(key, cacheKey)).toBe(true);
+    expect(actionUtils.isExactKeyMatch("linux-rust", "linux-rust")).toBe(true);
 });
 
 test("isExactKeyMatch with same key and different casing returns true", () => {
-    const key = "linux-rust";
-    const cacheKey = "LINUX-RUST";
-
-    expect(actionUtils.isExactKeyMatch(key, cacheKey)).toBe(true);
+    expect(actionUtils.isExactKeyMatch("linux-rust", "LINUX-RUST")).toBe(true);
 });
 
 test("logWarning logs a message with a warning prefix", () => {
     const message = "A warning occurred.";
-
-    const infoMock = jest.spyOn(core, "info");
-
     actionUtils.logWarning(message);
-
-    expect(infoMock).toHaveBeenCalledWith(`[warning]${message}`);
+    expect(core.info).toHaveBeenCalledWith(`[warning]${message}`);
 });
 
 test("isValidEvent returns false for event that does not have a branch or tag", () => {
-    const event = "foo";
-    process.env[Events.Key] = event;
-
-    const isValidEvent = actionUtils.isValidEvent();
-
-    expect(isValidEvent).toBe(false);
+    process.env[Events.Key] = "foo";
+    expect(actionUtils.isValidEvent()).toBe(false);
 });
 
 test("isValidEvent returns true for event that has a ref", () => {
-    const event = Events.Push;
-    process.env[Events.Key] = event;
+    process.env[Events.Key] = Events.Push;
     process.env[RefKey] = "ref/heads/feature";
-
-    const isValidEvent = actionUtils.isValidEvent();
-
-    expect(isValidEvent).toBe(true);
+    expect(actionUtils.isValidEvent()).toBe(true);
 });
 
 test("getInputAsArray returns empty array if not required and missing", () => {
@@ -124,7 +137,7 @@ test("getInputAsArray returns empty array if not required and missing", () => {
 test("getInputAsArray throws error if required and missing", () => {
     expect(() =>
         actionUtils.getInputAsArray("foo", { required: true })
-    ).toThrowError();
+    ).toThrow();
 });
 
 test("getInputAsArray handles single line correctly", () => {
@@ -180,7 +193,7 @@ test("getInputAsInt returns undefined if input is invalid or NaN", () => {
 test("getInputAsInt throws if required and value missing", () => {
     expect(() =>
         actionUtils.getInputAsInt("undefined", { required: true })
-    ).toThrowError();
+    ).toThrow();
 });
 
 test("getInputAsBool returns false if input not set", () => {
@@ -200,68 +213,65 @@ test("getInputAsBool returns false if input is invalid or NaN", () => {
 test("getInputAsBool throws if required and value missing", () => {
     expect(() =>
         actionUtils.getInputAsBool("undefined2", { required: true })
-    ).toThrowError();
+    ).toThrow();
 });
 
 test("isCacheFeatureAvailable for ac enabled", () => {
-    jest.spyOn(cache, "isFeatureAvailable").mockImplementation(() => true);
-
+    (cache.isFeatureAvailable as jest.Mock).mockReturnValue(true);
     expect(actionUtils.isCacheFeatureAvailable()).toBe(true);
 });
 
 test("isCacheFeatureAvailable for ac disabled on GHES", () => {
-    jest.spyOn(cache, "isFeatureAvailable").mockImplementation(() => false);
+    (cache.isFeatureAvailable as jest.Mock).mockReturnValue(false);
 
     const message = `Cache action is only supported on GHES version >= 3.5. If you are on version >=3.5 Please check with GHES admin if Actions cache service is enabled or not.
 Otherwise please upgrade to GHES version >= 3.5 and If you are also using Github Connect, please unretire the actions/cache namespace before upgrade (see https://docs.github.com/en/enterprise-server@3.5/admin/github-actions/managing-access-to-actions-from-githubcom/enabling-automatic-access-to-githubcom-actions-using-github-connect#automatic-retirement-of-namespaces-for-actions-accessed-on-githubcom)`;
-    const infoMock = jest.spyOn(core, "info");
 
     try {
         process.env["GITHUB_SERVER_URL"] = "http://example.com";
         expect(actionUtils.isCacheFeatureAvailable()).toBe(false);
-        expect(infoMock).toHaveBeenCalledWith(`[warning]${message}`);
+        expect(core.info).toHaveBeenCalledWith(`[warning]${message}`);
     } finally {
         delete process.env["GITHUB_SERVER_URL"];
     }
 });
 
 test("isCacheFeatureAvailable for ac disabled on dotcom", () => {
-    jest.spyOn(cache, "isFeatureAvailable").mockImplementation(() => false);
+    (cache.isFeatureAvailable as jest.Mock).mockReturnValue(false);
 
     const message =
         "An internal error has occurred in cache backend. Please check https://www.githubstatus.com/ for any ongoing issue in actions.";
-    const infoMock = jest.spyOn(core, "info");
 
     try {
         process.env["GITHUB_SERVER_URL"] = "http://github.com";
         expect(actionUtils.isCacheFeatureAvailable()).toBe(false);
-        expect(infoMock).toHaveBeenCalledWith(`[warning]${message}`);
+        expect(core.info).toHaveBeenCalledWith(`[warning]${message}`);
     } finally {
         delete process.env["GITHUB_SERVER_URL"];
     }
 });
 
-test("isGhes returns false when the GITHUB_SERVER_URL environment variable is not defined", async () => {
+test("isGhes returns false when the GITHUB_SERVER_URL environment variable is not defined", () => {
     delete process.env["GITHUB_SERVER_URL"];
     expect(actionUtils.isGhes()).toBeFalsy();
 });
 
-test("isGhes returns false when the GITHUB_SERVER_URL environment variable is set to github.com", async () => {
+test("isGhes returns false when the GITHUB_SERVER_URL environment variable is set to github.com", () => {
     process.env["GITHUB_SERVER_URL"] = "https://github.com";
     expect(actionUtils.isGhes()).toBeFalsy();
 });
 
-test("isGhes returns false when the GITHUB_SERVER_URL environment variable is set to a GitHub Enterprise Cloud-style URL", async () => {
+test("isGhes returns false when the GITHUB_SERVER_URL environment variable is set to a GitHub Enterprise Cloud-style URL", () => {
     process.env["GITHUB_SERVER_URL"] = "https://contoso.ghe.com";
     expect(actionUtils.isGhes()).toBeFalsy();
 });
 
-test("isGhes returns false when the GITHUB_SERVER_URL environment variable has a .localhost suffix", async () => {
+test("isGhes returns false when the GITHUB_SERVER_URL environment variable has a .localhost suffix", () => {
     process.env["GITHUB_SERVER_URL"] = "https://mock-github.localhost";
     expect(actionUtils.isGhes()).toBeFalsy();
 });
 
-test("isGhes returns true when the GITHUB_SERVER_URL environment variable is set to some other URL", async () => {
+test("isGhes returns true when the GITHUB_SERVER_URL environment variable is set to some other URL", () => {
     process.env["GITHUB_SERVER_URL"] = "https://src.onpremise.fabrikam.com";
     expect(actionUtils.isGhes()).toBeTruthy();
 });

__tests__/restore.test.ts

@@ -1,50 +1,66 @@
-import * as cache from "@actions/cache";
-import * as core from "@actions/core";
+import { afterEach, beforeEach, expect, jest, test } from "@jest/globals";
 
-import { Events, RefKey } from "../src/constants";
-import { restoreRun } from "../src/restoreImpl";
-import * as actionUtils from "../src/utils/actionUtils";
-import * as testUtils from "../src/utils/testUtils";
-
-jest.mock("../src/utils/actionUtils");
-
-beforeAll(() => {
-    jest.spyOn(actionUtils, "isExactKeyMatch").mockImplementation(
-        (key, cacheResult) => {
-            const actualUtils = jest.requireActual("../src/utils/actionUtils");
-            return actualUtils.isExactKeyMatch(key, cacheResult);
+// Mock @actions/core
+jest.unstable_mockModule("@actions/core", () => ({
+    getInput: jest.fn((name: string, options?: { required?: boolean }) => {
+        const val =
+            process.env[`INPUT_${name.replace(/ /g, "_").toUpperCase()}`] || "";
+        if (options && options.required && !val) {
+            throw new Error(`Input required and not supplied: ${name}`);
         }
-    );
+        return val.trim();
+    }),
+    setOutput: jest.fn(),
+    setFailed: jest.fn(),
+    info: jest.fn(),
+    warning: jest.fn(),
+    debug: jest.fn(),
+    error: jest.fn(),
+    saveState: jest.fn(),
+    getState: jest.fn(() => ""),
+    isDebug: jest.fn(() => false),
+    exportVariable: jest.fn(),
+    addPath: jest.fn(),
+    group: jest.fn((name: string, fn: () => Promise<unknown>) => fn()),
+    startGroup: jest.fn(),
+    endGroup: jest.fn()
+}));
 
-    jest.spyOn(actionUtils, "isValidEvent").mockImplementation(() => {
-        const actualUtils = jest.requireActual("../src/utils/actionUtils");
-        return actualUtils.isValidEvent();
-    });
-
-    jest.spyOn(actionUtils, "getInputAsArray").mockImplementation(
-        (name, options) => {
-            const actualUtils = jest.requireActual("../src/utils/actionUtils");
-            return actualUtils.getInputAsArray(name, options);
+// Mock @actions/cache
+jest.unstable_mockModule("@actions/cache", () => ({
+    restoreCache: jest.fn(),
+    saveCache: jest.fn(),
+    isFeatureAvailable: jest.fn(() => true),
+    ReserveCacheError: class ReserveCacheError extends Error {
+        constructor(message: string) {
+            super(message);
+            this.name = "ReserveCacheError";
         }
-    );
+    }
+}));
 
-    jest.spyOn(actionUtils, "getInputAsBool").mockImplementation(
-        (name, options) => {
-            const actualUtils = jest.requireActual("../src/utils/actionUtils");
-            return actualUtils.getInputAsBool(name, options);
-        }
-    );
-});
+const core = await import("@actions/core");
+const cache = await import("@actions/cache");
+const { Events, RefKey } = await import("../src/constants");
+const { restoreRun } = await import("../src/restoreImpl");
+const testUtils = await import("../src/utils/testUtils");
 
 beforeEach(() => {
-    jest.restoreAllMocks();
+    jest.clearAllMocks();
+    (core.getInput as jest.Mock).mockImplementation(
+        (name: string, options?: { required?: boolean }) => {
+            const val =
+                process.env[`INPUT_${name.replace(/ /g, "_").toUpperCase()}`] ||
+                "";
+            if (options && options.required && !val) {
+                throw new Error(`Input required and not supplied: ${name}`);
+            }
+            return val.trim();
+        }
+    );
+    (cache.isFeatureAvailable as jest.Mock).mockReturnValue(true);
     process.env[Events.Key] = Events.Push;
     process.env[RefKey] = "refs/heads/feature-branch";
-
-    jest.spyOn(actionUtils, "isGhes").mockImplementation(() => false);
-    jest.spyOn(actionUtils, "isCacheFeatureAvailable").mockImplementation(
-        () => true
-    );
 });
 
 afterEach(() => {
@@ -62,19 +78,12 @@ test("restore with no cache found", async () => {
         enableCrossOsArchive: false
     });
 
-    const infoMock = jest.spyOn(core, "info");
-    const failedMock = jest.spyOn(core, "setFailed");
-    const stateMock = jest.spyOn(core, "saveState");
-    const restoreCacheMock = jest
-        .spyOn(cache, "restoreCache")
-        .mockImplementationOnce(() => {
-            return Promise.resolve(undefined);
-        });
+    (cache.restoreCache as jest.Mock).mockResolvedValue(undefined);
 
     await restoreRun();
 
-    expect(restoreCacheMock).toHaveBeenCalledTimes(1);
-    expect(restoreCacheMock).toHaveBeenCalledWith(
+    expect(cache.restoreCache).toHaveBeenCalledTimes(1);
+    expect(cache.restoreCache).toHaveBeenCalledWith(
         [path],
         key,
         [],
@@ -84,12 +93,10 @@ test("restore with no cache found", async () => {
         false
     );
 
-    expect(stateMock).toHaveBeenCalledWith("CACHE_KEY", key);
-    expect(stateMock).toHaveBeenCalledTimes(1);
-
-    expect(failedMock).toHaveBeenCalledTimes(0);
-
-    expect(infoMock).toHaveBeenCalledWith(
+    expect(core.saveState).toHaveBeenCalledWith("CACHE_KEY", key);
+    expect(core.saveState).toHaveBeenCalledTimes(1);
+    expect(core.setFailed).toHaveBeenCalledTimes(0);
+    expect(core.info).toHaveBeenCalledWith(
         `Cache not found for input keys: ${key}`
     );
 });
@@ -105,19 +112,12 @@ test("restore with restore keys and no cache found", async () => {
         enableCrossOsArchive: false
     });
 
-    const infoMock = jest.spyOn(core, "info");
-    const failedMock = jest.spyOn(core, "setFailed");
-    const stateMock = jest.spyOn(core, "saveState");
-    const restoreCacheMock = jest
-        .spyOn(cache, "restoreCache")
-        .mockImplementationOnce(() => {
-            return Promise.resolve(undefined);
-        });
+    (cache.restoreCache as jest.Mock).mockResolvedValue(undefined);
 
     await restoreRun();
 
-    expect(restoreCacheMock).toHaveBeenCalledTimes(1);
-    expect(restoreCacheMock).toHaveBeenCalledWith(
+    expect(cache.restoreCache).toHaveBeenCalledTimes(1);
+    expect(cache.restoreCache).toHaveBeenCalledWith(
         [path],
         key,
         [restoreKey],
@@ -127,12 +127,10 @@ test("restore with restore keys and no cache found", async () => {
         false
     );
 
-    expect(stateMock).toHaveBeenCalledWith("CACHE_KEY", key);
-    expect(stateMock).toHaveBeenCalledTimes(1);
-
-    expect(failedMock).toHaveBeenCalledTimes(0);
-
-    expect(infoMock).toHaveBeenCalledWith(
+    expect(core.saveState).toHaveBeenCalledWith("CACHE_KEY", key);
+    expect(core.saveState).toHaveBeenCalledTimes(1);
+    expect(core.setFailed).toHaveBeenCalledTimes(0);
+    expect(core.info).toHaveBeenCalledWith(
         `Cache not found for input keys: ${key}, ${restoreKey}`
     );
 });
@@ -146,20 +144,12 @@ test("restore with cache found for key", async () => {
         enableCrossOsArchive: false
     });
 
-    const infoMock = jest.spyOn(core, "info");
-    const failedMock = jest.spyOn(core, "setFailed");
-    const stateMock = jest.spyOn(core, "saveState");
-    const setCacheHitOutputMock = jest.spyOn(core, "setOutput");
-    const restoreCacheMock = jest
-        .spyOn(cache, "restoreCache")
-        .mockImplementationOnce(() => {
-            return Promise.resolve(key);
-        });
+    (cache.restoreCache as jest.Mock).mockResolvedValue(key);
 
     await restoreRun();
 
-    expect(restoreCacheMock).toHaveBeenCalledTimes(1);
-    expect(restoreCacheMock).toHaveBeenCalledWith(
+    expect(cache.restoreCache).toHaveBeenCalledTimes(1);
+    expect(cache.restoreCache).toHaveBeenCalledWith(
         [path],
         key,
         [],
@@ -169,15 +159,13 @@ test("restore with cache found for key", async () => {
         false
     );
 
-    expect(stateMock).toHaveBeenCalledWith("CACHE_KEY", key);
-    expect(stateMock).toHaveBeenCalledWith("CACHE_RESULT", key);
-    expect(stateMock).toHaveBeenCalledTimes(2);
-
-    expect(setCacheHitOutputMock).toHaveBeenCalledTimes(1);
-    expect(setCacheHitOutputMock).toHaveBeenCalledWith("cache-hit", "true");
-
-    expect(infoMock).toHaveBeenCalledWith(`Cache restored from key: ${key}`);
-    expect(failedMock).toHaveBeenCalledTimes(0);
+    expect(core.saveState).toHaveBeenCalledWith("CACHE_KEY", key);
+    expect(core.saveState).toHaveBeenCalledWith("CACHE_RESULT", key);
+    expect(core.saveState).toHaveBeenCalledTimes(2);
+    expect(core.setOutput).toHaveBeenCalledTimes(1);
+    expect(core.setOutput).toHaveBeenCalledWith("cache-hit", "true");
+    expect(core.info).toHaveBeenCalledWith(`Cache restored from key: ${key}`);
+    expect(core.setFailed).toHaveBeenCalledTimes(0);
 });
 
 test("restore with cache found for restore key", async () => {
@@ -191,39 +179,20 @@ test("restore with cache found for restore key", async () => {
         enableCrossOsArchive: false
     });
 
-    const infoMock = jest.spyOn(core, "info");
-    const failedMock = jest.spyOn(core, "setFailed");
-    const stateMock = jest.spyOn(core, "saveState");
-    const setCacheHitOutputMock = jest.spyOn(core, "setOutput");
-    const restoreCacheMock = jest
-        .spyOn(cache, "restoreCache")
-        .mockImplementationOnce(() => {
-            return Promise.resolve(restoreKey);
-        });
+    (cache.restoreCache as jest.Mock).mockResolvedValue(restoreKey);
 
     await restoreRun();
 
-    expect(restoreCacheMock).toHaveBeenCalledTimes(1);
-    expect(restoreCacheMock).toHaveBeenCalledWith(
-        [path],
-        key,
-        [restoreKey],
-        {
-            lookupOnly: false
-        },
-        false
-    );
-
-    expect(stateMock).toHaveBeenCalledWith("CACHE_KEY", key);
-    expect(stateMock).toHaveBeenCalledWith("CACHE_RESULT", restoreKey);
-    expect(stateMock).toHaveBeenCalledTimes(2);
-
-    expect(setCacheHitOutputMock).toHaveBeenCalledTimes(1);
-    expect(setCacheHitOutputMock).toHaveBeenCalledWith("cache-hit", "false");
-    expect(infoMock).toHaveBeenCalledWith(
+    expect(cache.restoreCache).toHaveBeenCalledTimes(1);
+    expect(core.saveState).toHaveBeenCalledWith("CACHE_KEY", key);
+    expect(core.saveState).toHaveBeenCalledWith("CACHE_RESULT", restoreKey);
+    expect(core.saveState).toHaveBeenCalledTimes(2);
+    expect(core.setOutput).toHaveBeenCalledTimes(1);
+    expect(core.setOutput).toHaveBeenCalledWith("cache-hit", "false");
+    expect(core.info).toHaveBeenCalledWith(
         `Cache restored from key: ${restoreKey}`
     );
-    expect(failedMock).toHaveBeenCalledTimes(0);
+    expect(core.setFailed).toHaveBeenCalledTimes(0);
 });
 
 test("Fail restore when fail on cache miss is enabled and primary + restore keys not found", async () => {
@@ -237,35 +206,17 @@ test("Fail restore when fail on cache miss is enabled and primary + restore keys
         failOnCacheMiss: true
     });
 
-    const failedMock = jest.spyOn(core, "setFailed");
-    const stateMock = jest.spyOn(core, "saveState");
-    const setCacheHitOutputMock = jest.spyOn(core, "setOutput");
-    const restoreCacheMock = jest
-        .spyOn(cache, "restoreCache")
-        .mockImplementationOnce(() => {
-            return Promise.resolve(undefined);
-        });
+    (cache.restoreCache as jest.Mock).mockResolvedValue(undefined);
 
     await restoreRun();
 
-    expect(restoreCacheMock).toHaveBeenCalledTimes(1);
-    expect(restoreCacheMock).toHaveBeenCalledWith(
-        [path],
-        key,
-        [restoreKey],
-        {
-            lookupOnly: false
-        },
-        false
-    );
-
-    expect(stateMock).toHaveBeenCalledWith("CACHE_KEY", key);
-    expect(setCacheHitOutputMock).toHaveBeenCalledTimes(0);
-
-    expect(failedMock).toHaveBeenCalledWith(
+    expect(cache.restoreCache).toHaveBeenCalledTimes(1);
+    expect(core.saveState).toHaveBeenCalledWith("CACHE_KEY", key);
+    expect(core.setOutput).toHaveBeenCalledTimes(0);
+    expect(core.setFailed).toHaveBeenCalledWith(
         `Failed to restore cache entry. Exiting as fail-on-cache-miss is set. Input key: ${key}`
     );
-    expect(failedMock).toHaveBeenCalledTimes(1);
+    expect(core.setFailed).toHaveBeenCalledTimes(1);
 });
 
 test("restore when fail on cache miss is enabled and primary key doesn't match restored key", async () => {
@@ -279,40 +230,20 @@ test("restore when fail on cache miss is enabled and primary key doesn't match r
         failOnCacheMiss: true
     });
 
-    const infoMock = jest.spyOn(core, "info");
-    const failedMock = jest.spyOn(core, "setFailed");
-    const stateMock = jest.spyOn(core, "saveState");
-    const setCacheHitOutputMock = jest.spyOn(core, "setOutput");
-    const restoreCacheMock = jest
-        .spyOn(cache, "restoreCache")
-        .mockImplementationOnce(() => {
-            return Promise.resolve(restoreKey);
-        });
+    (cache.restoreCache as jest.Mock).mockResolvedValue(restoreKey);
 
     await restoreRun();
 
-    expect(restoreCacheMock).toHaveBeenCalledTimes(1);
-    expect(restoreCacheMock).toHaveBeenCalledWith(
-        [path],
-        key,
-        [restoreKey],
-        {
-            lookupOnly: false
-        },
-        false
-    );
-
-    expect(stateMock).toHaveBeenCalledWith("CACHE_KEY", key);
-    expect(stateMock).toHaveBeenCalledWith("CACHE_RESULT", restoreKey);
-    expect(stateMock).toHaveBeenCalledTimes(2);
-
-    expect(setCacheHitOutputMock).toHaveBeenCalledTimes(1);
-    expect(setCacheHitOutputMock).toHaveBeenCalledWith("cache-hit", "false");
-
-    expect(infoMock).toHaveBeenCalledWith(
+    expect(cache.restoreCache).toHaveBeenCalledTimes(1);
+    expect(core.saveState).toHaveBeenCalledWith("CACHE_KEY", key);
+    expect(core.saveState).toHaveBeenCalledWith("CACHE_RESULT", restoreKey);
+    expect(core.saveState).toHaveBeenCalledTimes(2);
+    expect(core.setOutput).toHaveBeenCalledTimes(1);
+    expect(core.setOutput).toHaveBeenCalledWith("cache-hit", "false");
+    expect(core.info).toHaveBeenCalledWith(
         `Cache restored from key: ${restoreKey}`
     );
-    expect(failedMock).toHaveBeenCalledTimes(0);
+    expect(core.setFailed).toHaveBeenCalledTimes(0);
 });
 
 test("restore with fail on cache miss disabled and no cache found", async () => {
@@ -326,33 +257,15 @@ test("restore with fail on cache miss disabled and no cache found", async () =>
         failOnCacheMiss: false
     });
 
-    const infoMock = jest.spyOn(core, "info");
-    const failedMock = jest.spyOn(core, "setFailed");
-    const stateMock = jest.spyOn(core, "saveState");
-    const restoreCacheMock = jest
-        .spyOn(cache, "restoreCache")
-        .mockImplementationOnce(() => {
-            return Promise.resolve(undefined);
-        });
+    (cache.restoreCache as jest.Mock).mockResolvedValue(undefined);
 
     await restoreRun();
 
-    expect(restoreCacheMock).toHaveBeenCalledTimes(1);
-    expect(restoreCacheMock).toHaveBeenCalledWith(
-        [path],
-        key,
-        [restoreKey],
-        {
-            lookupOnly: false
-        },
-        false
-    );
-
-    expect(stateMock).toHaveBeenCalledWith("CACHE_KEY", key);
-    expect(stateMock).toHaveBeenCalledTimes(1);
-
-    expect(infoMock).toHaveBeenCalledWith(
+    expect(cache.restoreCache).toHaveBeenCalledTimes(1);
+    expect(core.saveState).toHaveBeenCalledWith("CACHE_KEY", key);
+    expect(core.saveState).toHaveBeenCalledTimes(1);
+    expect(core.info).toHaveBeenCalledWith(
         `Cache not found for input keys: ${key}, ${restoreKey}`
     );
-    expect(failedMock).toHaveBeenCalledTimes(0);
+    expect(core.setFailed).toHaveBeenCalledTimes(0);
 });

__tests__/restoreImpl.test.ts

@@ -1,51 +1,68 @@
-import * as cache from "@actions/cache";
-import * as core from "@actions/core";
+import { afterEach, beforeEach, expect, jest, test } from "@jest/globals";
 
-import { Events, Inputs, RefKey } from "../src/constants";
-import { restoreImpl } from "../src/restoreImpl";
-import { StateProvider } from "../src/stateProvider";
-import * as actionUtils from "../src/utils/actionUtils";
-import * as testUtils from "../src/utils/testUtils";
-
-jest.mock("../src/utils/actionUtils");
-
-beforeAll(() => {
-    jest.spyOn(actionUtils, "isExactKeyMatch").mockImplementation(
-        (key, cacheResult) => {
-            const actualUtils = jest.requireActual("../src/utils/actionUtils");
-            return actualUtils.isExactKeyMatch(key, cacheResult);
+// Mock @actions/core
+jest.unstable_mockModule("@actions/core", () => ({
+    getInput: jest.fn((name: string, options?: { required?: boolean }) => {
+        const val =
+            process.env[`INPUT_${name.replace(/ /g, "_").toUpperCase()}`] || "";
+        if (options && options.required && !val) {
+            throw new Error(`Input required and not supplied: ${name}`);
         }
-    );
+        return val.trim();
+    }),
+    setOutput: jest.fn(),
+    setFailed: jest.fn(),
+    info: jest.fn(),
+    warning: jest.fn(),
+    debug: jest.fn(),
+    error: jest.fn(),
+    saveState: jest.fn(),
+    getState: jest.fn(() => ""),
+    isDebug: jest.fn(() => false),
+    exportVariable: jest.fn(),
+    addPath: jest.fn(),
+    group: jest.fn((name: string, fn: () => Promise<unknown>) => fn()),
+    startGroup: jest.fn(),
+    endGroup: jest.fn()
+}));
 
-    jest.spyOn(actionUtils, "isValidEvent").mockImplementation(() => {
-        const actualUtils = jest.requireActual("../src/utils/actionUtils");
-        return actualUtils.isValidEvent();
-    });
-
-    jest.spyOn(actionUtils, "getInputAsArray").mockImplementation(
-        (name, options) => {
-            const actualUtils = jest.requireActual("../src/utils/actionUtils");
-            return actualUtils.getInputAsArray(name, options);
+// Mock @actions/cache
+jest.unstable_mockModule("@actions/cache", () => ({
+    restoreCache: jest.fn(),
+    saveCache: jest.fn(),
+    isFeatureAvailable: jest.fn(() => true),
+    ReserveCacheError: class ReserveCacheError extends Error {
+        constructor(message: string) {
+            super(message);
+            this.name = "ReserveCacheError";
         }
-    );
+    }
+}));
 
-    jest.spyOn(actionUtils, "getInputAsBool").mockImplementation(
-        (name, options) => {
-            const actualUtils = jest.requireActual("../src/utils/actionUtils");
-            return actualUtils.getInputAsBool(name, options);
-        }
-    );
-});
+const core = await import("@actions/core");
+const cache = await import("@actions/cache");
+const { Events, Inputs, RefKey } = await import("../src/constants");
+const { restoreImpl } = await import("../src/restoreImpl");
+const { StateProvider } = await import("../src/stateProvider");
+const testUtils = await import("../src/utils/testUtils");
 
 beforeEach(() => {
-    jest.restoreAllMocks();
+    jest.clearAllMocks();
+    (core.getInput as jest.Mock).mockImplementation(
+        (name: string, options?: { required?: boolean }) => {
+            const val =
+                process.env[`INPUT_${name.replace(/ /g, "_").toUpperCase()}`] ||
+                "";
+            if (options && options.required && !val) {
+                throw new Error(`Input required and not supplied: ${name}`);
+            }
+            return val.trim();
+        }
+    );
+    (core.getState as jest.Mock).mockReturnValue("");
+    (cache.isFeatureAvailable as jest.Mock).mockReturnValue(true);
     process.env[Events.Key] = Events.Push;
     process.env[RefKey] = "refs/heads/feature-branch";
-
-    jest.spyOn(actionUtils, "isGhes").mockImplementation(() => false);
-    jest.spyOn(actionUtils, "isCacheFeatureAvailable").mockImplementation(
-        () => true
-    );
 });
 
 afterEach(() => {
@@ -55,52 +72,37 @@ afterEach(() => {
 });
 
 test("restore with invalid event outputs warning", async () => {
-    const logWarningMock = jest.spyOn(actionUtils, "logWarning");
-    const failedMock = jest.spyOn(core, "setFailed");
     const invalidEvent = "commit_comment";
     process.env[Events.Key] = invalidEvent;
     delete process.env[RefKey];
     await restoreImpl(new StateProvider());
-    expect(logWarningMock).toHaveBeenCalledWith(
-        `Event Validation Error: The event type ${invalidEvent} is not supported because it's not tied to a branch or tag ref.`
+    expect(core.info).toHaveBeenCalledWith(
+        `[warning]Event Validation Error: The event type ${invalidEvent} is not supported because it's not tied to a branch or tag ref.`
     );
-    expect(failedMock).toHaveBeenCalledTimes(0);
+    expect(core.setFailed).toHaveBeenCalledTimes(0);
 });
 
 test("restore without AC available should no-op", async () => {
-    jest.spyOn(actionUtils, "isGhes").mockImplementation(() => false);
-    jest.spyOn(actionUtils, "isCacheFeatureAvailable").mockImplementation(
-        () => false
-    );
-
-    const restoreCacheMock = jest.spyOn(cache, "restoreCache");
-    const setCacheHitOutputMock = jest.spyOn(core, "setOutput");
+    (cache.isFeatureAvailable as jest.Mock).mockReturnValue(false);
 
     await restoreImpl(new StateProvider());
 
-    expect(restoreCacheMock).toHaveBeenCalledTimes(0);
-    expect(setCacheHitOutputMock).toHaveBeenCalledTimes(1);
-    expect(setCacheHitOutputMock).toHaveBeenCalledWith("cache-hit", "false");
+    expect(cache.restoreCache).toHaveBeenCalledTimes(0);
+    expect(core.setOutput).toHaveBeenCalledTimes(1);
+    expect(core.setOutput).toHaveBeenCalledWith("cache-hit", "false");
 });
 
 test("restore on GHES without AC available should no-op", async () => {
-    jest.spyOn(actionUtils, "isGhes").mockImplementation(() => true);
-    jest.spyOn(actionUtils, "isCacheFeatureAvailable").mockImplementation(
-        () => false
-    );
-
-    const restoreCacheMock = jest.spyOn(cache, "restoreCache");
-    const setCacheHitOutputMock = jest.spyOn(core, "setOutput");
+    (cache.isFeatureAvailable as jest.Mock).mockReturnValue(false);
 
     await restoreImpl(new StateProvider());
 
-    expect(restoreCacheMock).toHaveBeenCalledTimes(0);
-    expect(setCacheHitOutputMock).toHaveBeenCalledTimes(1);
-    expect(setCacheHitOutputMock).toHaveBeenCalledWith("cache-hit", "false");
+    expect(cache.restoreCache).toHaveBeenCalledTimes(0);
+    expect(core.setOutput).toHaveBeenCalledTimes(1);
+    expect(core.setOutput).toHaveBeenCalledWith("cache-hit", "false");
 });
 
 test("restore on GHES with AC available ", async () => {
-    jest.spyOn(actionUtils, "isGhes").mockImplementation(() => true);
     const path = "node_modules";
     const key = "node-test";
     testUtils.setInputs({
@@ -109,20 +111,12 @@ test("restore on GHES with AC available ", async () => {
         enableCrossOsArchive: false
     });
 
-    const infoMock = jest.spyOn(core, "info");
-    const failedMock = jest.spyOn(core, "setFailed");
-    const stateMock = jest.spyOn(core, "saveState");
-    const setCacheHitOutputMock = jest.spyOn(core, "setOutput");
-    const restoreCacheMock = jest
-        .spyOn(cache, "restoreCache")
-        .mockImplementationOnce(() => {
-            return Promise.resolve(key);
-        });
+    (cache.restoreCache as jest.Mock).mockResolvedValue(key);
 
     await restoreImpl(new StateProvider());
 
-    expect(restoreCacheMock).toHaveBeenCalledTimes(1);
-    expect(restoreCacheMock).toHaveBeenCalledWith(
+    expect(cache.restoreCache).toHaveBeenCalledTimes(1);
+    expect(cache.restoreCache).toHaveBeenCalledWith(
         [path],
         key,
         [],
@@ -132,32 +126,26 @@ test("restore on GHES with AC available ", async () => {
         false
     );
 
-    expect(stateMock).toHaveBeenCalledWith("CACHE_KEY", key);
-    expect(setCacheHitOutputMock).toHaveBeenCalledTimes(1);
-    expect(setCacheHitOutputMock).toHaveBeenCalledWith("cache-hit", "true");
-
-    expect(infoMock).toHaveBeenCalledWith(`Cache restored from key: ${key}`);
-    expect(failedMock).toHaveBeenCalledTimes(0);
+    expect(core.saveState).toHaveBeenCalledWith("CACHE_KEY", key);
+    expect(core.setOutput).toHaveBeenCalledTimes(1);
+    expect(core.setOutput).toHaveBeenCalledWith("cache-hit", "true");
+    expect(core.info).toHaveBeenCalledWith(`Cache restored from key: ${key}`);
+    expect(core.setFailed).toHaveBeenCalledTimes(0);
 });
 
 test("restore with no path should fail", async () => {
-    const failedMock = jest.spyOn(core, "setFailed");
-    const restoreCacheMock = jest.spyOn(cache, "restoreCache");
     await restoreImpl(new StateProvider());
-    expect(restoreCacheMock).toHaveBeenCalledTimes(0);
-    // this input isn't necessary for restore b/c tarball contains entries relative to workspace
-    expect(failedMock).not.toHaveBeenCalledWith(
+    expect(cache.restoreCache).toHaveBeenCalledTimes(0);
+    expect(core.setFailed).not.toHaveBeenCalledWith(
         "Input required and not supplied: path"
     );
 });
 
 test("restore with no key", async () => {
     testUtils.setInput(Inputs.Path, "node_modules");
-    const failedMock = jest.spyOn(core, "setFailed");
-    const restoreCacheMock = jest.spyOn(cache, "restoreCache");
     await restoreImpl(new StateProvider());
-    expect(restoreCacheMock).toHaveBeenCalledTimes(0);
-    expect(failedMock).toHaveBeenCalledWith(
+    expect(cache.restoreCache).toHaveBeenCalledTimes(0);
+    expect(core.setFailed).toHaveBeenCalledWith(
         "Input required and not supplied: key"
     );
 });
@@ -172,46 +160,32 @@ test("restore with too many keys should fail", async () => {
         restoreKeys,
         enableCrossOsArchive: false
     });
-    const failedMock = jest.spyOn(core, "setFailed");
-    const restoreCacheMock = jest.spyOn(cache, "restoreCache");
-    await restoreImpl(new StateProvider());
-    expect(restoreCacheMock).toHaveBeenCalledTimes(1);
-    expect(restoreCacheMock).toHaveBeenCalledWith(
-        [path],
-        key,
-        restoreKeys,
-        {
-            lookupOnly: false
-        },
-        false
+    (cache.restoreCache as jest.Mock).mockRejectedValue(
+        new Error("Key Validation Error: Keys are limited to a maximum of 10.")
     );
-    expect(failedMock).toHaveBeenCalledWith(
+    await restoreImpl(new StateProvider());
+    expect(cache.restoreCache).toHaveBeenCalledTimes(1);
+    expect(core.setFailed).toHaveBeenCalledWith(
         `Key Validation Error: Keys are limited to a maximum of 10.`
     );
 });
 
 test("restore with large key should fail", async () => {
     const path = "node_modules";
-    const key = "foo".repeat(512); // Over the 512 character limit
+    const key = "foo".repeat(512);
     testUtils.setInputs({
         path: path,
         key,
         enableCrossOsArchive: false
     });
-    const failedMock = jest.spyOn(core, "setFailed");
-    const restoreCacheMock = jest.spyOn(cache, "restoreCache");
-    await restoreImpl(new StateProvider());
-    expect(restoreCacheMock).toHaveBeenCalledTimes(1);
-    expect(restoreCacheMock).toHaveBeenCalledWith(
-        [path],
-        key,
-        [],
-        {
-            lookupOnly: false
-        },
-        false
+    (cache.restoreCache as jest.Mock).mockRejectedValue(
+        new Error(
+            `Key Validation Error: ${key} cannot be larger than 512 characters.`
+        )
     );
-    expect(failedMock).toHaveBeenCalledWith(
+    await restoreImpl(new StateProvider());
+    expect(cache.restoreCache).toHaveBeenCalledTimes(1);
+    expect(core.setFailed).toHaveBeenCalledWith(
         `Key Validation Error: ${key} cannot be larger than 512 characters.`
     );
 });
@@ -224,20 +198,12 @@ test("restore with invalid key should fail", async () => {
         key,
         enableCrossOsArchive: false
     });
-    const failedMock = jest.spyOn(core, "setFailed");
-    const restoreCacheMock = jest.spyOn(cache, "restoreCache");
-    await restoreImpl(new StateProvider());
-    expect(restoreCacheMock).toHaveBeenCalledTimes(1);
-    expect(restoreCacheMock).toHaveBeenCalledWith(
-        [path],
-        key,
-        [],
-        {
-            lookupOnly: false
-        },
-        false
+    (cache.restoreCache as jest.Mock).mockRejectedValue(
+        new Error(`Key Validation Error: ${key} cannot contain commas.`)
     );
-    expect(failedMock).toHaveBeenCalledWith(
+    await restoreImpl(new StateProvider());
+    expect(cache.restoreCache).toHaveBeenCalledTimes(1);
+    expect(core.setFailed).toHaveBeenCalledWith(
         `Key Validation Error: ${key} cannot contain commas.`
     );
 });
@@ -251,32 +217,14 @@ test("restore with no cache found", async () => {
         enableCrossOsArchive: false
     });
 
-    const infoMock = jest.spyOn(core, "info");
-    const failedMock = jest.spyOn(core, "setFailed");
-    const stateMock = jest.spyOn(core, "saveState");
-    const restoreCacheMock = jest
-        .spyOn(cache, "restoreCache")
-        .mockImplementationOnce(() => {
-            return Promise.resolve(undefined);
-        });
+    (cache.restoreCache as jest.Mock).mockResolvedValue(undefined);
 
     await restoreImpl(new StateProvider());
 
-    expect(restoreCacheMock).toHaveBeenCalledTimes(1);
-    expect(restoreCacheMock).toHaveBeenCalledWith(
-        [path],
-        key,
-        [],
-        {
-            lookupOnly: false
-        },
-        false
-    );
-
-    expect(stateMock).toHaveBeenCalledWith("CACHE_KEY", key);
-    expect(failedMock).toHaveBeenCalledTimes(0);
-
-    expect(infoMock).toHaveBeenCalledWith(
+    expect(cache.restoreCache).toHaveBeenCalledTimes(1);
+    expect(core.saveState).toHaveBeenCalledWith("CACHE_KEY", key);
+    expect(core.setFailed).toHaveBeenCalledTimes(0);
+    expect(core.info).toHaveBeenCalledWith(
         `Cache not found for input keys: ${key}`
     );
 });
@@ -292,32 +240,14 @@ test("restore with restore keys and no cache found", async () => {
         enableCrossOsArchive: false
     });
 
-    const infoMock = jest.spyOn(core, "info");
-    const failedMock = jest.spyOn(core, "setFailed");
-    const stateMock = jest.spyOn(core, "saveState");
-    const restoreCacheMock = jest
-        .spyOn(cache, "restoreCache")
-        .mockImplementationOnce(() => {
-            return Promise.resolve(undefined);
-        });
+    (cache.restoreCache as jest.Mock).mockResolvedValue(undefined);
 
     await restoreImpl(new StateProvider());
 
-    expect(restoreCacheMock).toHaveBeenCalledTimes(1);
-    expect(restoreCacheMock).toHaveBeenCalledWith(
-        [path],
-        key,
-        [restoreKey],
-        {
-            lookupOnly: false
-        },
-        false
-    );
-
-    expect(stateMock).toHaveBeenCalledWith("CACHE_KEY", key);
-    expect(failedMock).toHaveBeenCalledTimes(0);
-
-    expect(infoMock).toHaveBeenCalledWith(
+    expect(cache.restoreCache).toHaveBeenCalledTimes(1);
+    expect(core.saveState).toHaveBeenCalledWith("CACHE_KEY", key);
+    expect(core.setFailed).toHaveBeenCalledTimes(0);
+    expect(core.info).toHaveBeenCalledWith(
         `Cache not found for input keys: ${key}, ${restoreKey}`
     );
 });
@@ -331,35 +261,16 @@ test("restore with cache found for key", async () => {
         enableCrossOsArchive: false
     });
 
-    const infoMock = jest.spyOn(core, "info");
-    const failedMock = jest.spyOn(core, "setFailed");
-    const stateMock = jest.spyOn(core, "saveState");
-    const setCacheHitOutputMock = jest.spyOn(core, "setOutput");
-    const restoreCacheMock = jest
-        .spyOn(cache, "restoreCache")
-        .mockImplementationOnce(() => {
-            return Promise.resolve(key);
-        });
+    (cache.restoreCache as jest.Mock).mockResolvedValue(key);
 
     await restoreImpl(new StateProvider());
 
-    expect(restoreCacheMock).toHaveBeenCalledTimes(1);
-    expect(restoreCacheMock).toHaveBeenCalledWith(
-        [path],
-        key,
-        [],
-        {
-            lookupOnly: false
-        },
-        false
-    );
-
-    expect(stateMock).toHaveBeenCalledWith("CACHE_KEY", key);
-    expect(setCacheHitOutputMock).toHaveBeenCalledTimes(1);
-    expect(setCacheHitOutputMock).toHaveBeenCalledWith("cache-hit", "true");
-
-    expect(infoMock).toHaveBeenCalledWith(`Cache restored from key: ${key}`);
-    expect(failedMock).toHaveBeenCalledTimes(0);
+    expect(cache.restoreCache).toHaveBeenCalledTimes(1);
+    expect(core.saveState).toHaveBeenCalledWith("CACHE_KEY", key);
+    expect(core.setOutput).toHaveBeenCalledTimes(1);
+    expect(core.setOutput).toHaveBeenCalledWith("cache-hit", "true");
+    expect(core.info).toHaveBeenCalledWith(`Cache restored from key: ${key}`);
+    expect(core.setFailed).toHaveBeenCalledTimes(0);
 });
 
 test("restore with cache found for restore key", async () => {
@@ -373,36 +284,18 @@ test("restore with cache found for restore key", async () => {
         enableCrossOsArchive: false
     });
 
-    const infoMock = jest.spyOn(core, "info");
-    const failedMock = jest.spyOn(core, "setFailed");
-    const stateMock = jest.spyOn(core, "saveState");
-    const setCacheHitOutputMock = jest.spyOn(core, "setOutput");
-    const restoreCacheMock = jest
-        .spyOn(cache, "restoreCache")
-        .mockImplementationOnce(() => {
-            return Promise.resolve(restoreKey);
-        });
+    (cache.restoreCache as jest.Mock).mockResolvedValue(restoreKey);
 
     await restoreImpl(new StateProvider());
 
-    expect(restoreCacheMock).toHaveBeenCalledTimes(1);
-    expect(restoreCacheMock).toHaveBeenCalledWith(
-        [path],
-        key,
-        [restoreKey],
-        {
-            lookupOnly: false
-        },
-        false
-    );
-
-    expect(stateMock).toHaveBeenCalledWith("CACHE_KEY", key);
-    expect(setCacheHitOutputMock).toHaveBeenCalledTimes(1);
-    expect(setCacheHitOutputMock).toHaveBeenCalledWith("cache-hit", "false");
-    expect(infoMock).toHaveBeenCalledWith(
+    expect(cache.restoreCache).toHaveBeenCalledTimes(1);
+    expect(core.saveState).toHaveBeenCalledWith("CACHE_KEY", key);
+    expect(core.setOutput).toHaveBeenCalledTimes(1);
+    expect(core.setOutput).toHaveBeenCalledWith("cache-hit", "false");
+    expect(core.info).toHaveBeenCalledWith(
         `Cache restored from key: ${restoreKey}`
     );
-    expect(failedMock).toHaveBeenCalledTimes(0);
+    expect(core.setFailed).toHaveBeenCalledTimes(0);
 });
 
 test("restore with lookup-only set", async () => {
@@ -414,20 +307,12 @@ test("restore with lookup-only set", async () => {
         lookupOnly: true
     });
 
-    const infoMock = jest.spyOn(core, "info");
-    const failedMock = jest.spyOn(core, "setFailed");
-    const stateMock = jest.spyOn(core, "saveState");
-    const setCacheHitOutputMock = jest.spyOn(core, "setOutput");
-    const restoreCacheMock = jest
-        .spyOn(cache, "restoreCache")
-        .mockImplementationOnce(() => {
-            return Promise.resolve(key);
-        });
+    (cache.restoreCache as jest.Mock).mockResolvedValue(key);
 
     await restoreImpl(new StateProvider());
 
-    expect(restoreCacheMock).toHaveBeenCalledTimes(1);
-    expect(restoreCacheMock).toHaveBeenCalledWith(
+    expect(cache.restoreCache).toHaveBeenCalledTimes(1);
+    expect(cache.restoreCache).toHaveBeenCalledWith(
         [path],
         key,
         [],
@@ -437,31 +322,30 @@ test("restore with lookup-only set", async () => {
         false
     );
 
-    expect(stateMock).toHaveBeenCalledWith("CACHE_KEY", key);
-    expect(stateMock).toHaveBeenCalledWith("CACHE_RESULT", key);
-    expect(stateMock).toHaveBeenCalledTimes(2);
-
-    expect(setCacheHitOutputMock).toHaveBeenCalledTimes(1);
-    expect(setCacheHitOutputMock).toHaveBeenCalledWith("cache-hit", "true");
-
-    expect(infoMock).toHaveBeenCalledWith(
+    expect(core.saveState).toHaveBeenCalledWith("CACHE_KEY", key);
+    expect(core.saveState).toHaveBeenCalledWith("CACHE_RESULT", key);
+    expect(core.saveState).toHaveBeenCalledTimes(2);
+    expect(core.setOutput).toHaveBeenCalledTimes(1);
+    expect(core.setOutput).toHaveBeenCalledWith("cache-hit", "true");
+    expect(core.info).toHaveBeenCalledWith(
         `Cache found and can be restored from key: ${key}`
     );
-    expect(failedMock).toHaveBeenCalledTimes(0);
+    expect(core.setFailed).toHaveBeenCalledTimes(0);
 });
 
 test("restore failure with earlyExit should call process exit", async () => {
     testUtils.setInput(Inputs.Path, "node_modules");
-    const failedMock = jest.spyOn(core, "setFailed");
-    const restoreCacheMock = jest.spyOn(cache, "restoreCache");
-    const processExitMock = jest.spyOn(process, "exit").mockImplementation();
+    const processExitMock = jest
+        .spyOn(process, "exit")
+        // eslint-disable-next-line @typescript-eslint/no-explicit-any
+        .mockImplementation((() => {}) as any);
 
-    // call restoreImpl with `earlyExit` set to true
     await restoreImpl(new StateProvider(), true);
 
-    expect(restoreCacheMock).toHaveBeenCalledTimes(0);
-    expect(failedMock).toHaveBeenCalledWith(
+    expect(cache.restoreCache).toHaveBeenCalledTimes(0);
+    expect(core.setFailed).toHaveBeenCalledWith(
         "Input required and not supplied: key"
     );
     expect(processExitMock).toHaveBeenCalledWith(1);
+    processExitMock.mockRestore();
 });

__tests__/restoreOnly.test.ts

@@ -1,51 +1,66 @@
-import * as cache from "@actions/cache";
-import * as core from "@actions/core";
+import { afterEach, beforeEach, expect, jest, test } from "@jest/globals";
 
-import { Events, RefKey } from "../src/constants";
-import { restoreOnlyRun } from "../src/restoreImpl";
-import * as actionUtils from "../src/utils/actionUtils";
-import * as testUtils from "../src/utils/testUtils";
-
-jest.mock("../src/utils/actionUtils");
-
-beforeAll(() => {
-    jest.spyOn(actionUtils, "isExactKeyMatch").mockImplementation(
-        (key, cacheResult) => {
-            const actualUtils = jest.requireActual("../src/utils/actionUtils");
-            return actualUtils.isExactKeyMatch(key, cacheResult);
+// Mock @actions/core
+jest.unstable_mockModule("@actions/core", () => ({
+    getInput: jest.fn((name: string, options?: { required?: boolean }) => {
+        const val =
+            process.env[`INPUT_${name.replace(/ /g, "_").toUpperCase()}`] || "";
+        if (options && options.required && !val) {
+            throw new Error(`Input required and not supplied: ${name}`);
         }
-    );
+        return val.trim();
+    }),
+    setOutput: jest.fn(),
+    setFailed: jest.fn(),
+    info: jest.fn(),
+    warning: jest.fn(),
+    debug: jest.fn(),
+    error: jest.fn(),
+    saveState: jest.fn(),
+    getState: jest.fn(() => ""),
+    isDebug: jest.fn(() => false),
+    exportVariable: jest.fn(),
+    addPath: jest.fn(),
+    group: jest.fn((name: string, fn: () => Promise<unknown>) => fn()),
+    startGroup: jest.fn(),
+    endGroup: jest.fn()
+}));
 
-    jest.spyOn(actionUtils, "isValidEvent").mockImplementation(() => {
-        const actualUtils = jest.requireActual("../src/utils/actionUtils");
-        return actualUtils.isValidEvent();
-    });
-
-    jest.spyOn(actionUtils, "getInputAsArray").mockImplementation(
-        (name, options) => {
-            const actualUtils = jest.requireActual("../src/utils/actionUtils");
-            return actualUtils.getInputAsArray(name, options);
+// Mock @actions/cache
+jest.unstable_mockModule("@actions/cache", () => ({
+    restoreCache: jest.fn(),
+    saveCache: jest.fn(),
+    isFeatureAvailable: jest.fn(() => true),
+    ReserveCacheError: class ReserveCacheError extends Error {
+        constructor(message: string) {
+            super(message);
+            this.name = "ReserveCacheError";
         }
-    );
+    }
+}));
 
-    jest.spyOn(actionUtils, "getInputAsBool").mockImplementation(
-        (name, options) => {
-            return jest
-                .requireActual("../src/utils/actionUtils")
-                .getInputAsBool(name, options);
-        }
-    );
-});
+const core = await import("@actions/core");
+const cache = await import("@actions/cache");
+const { Events, RefKey } = await import("../src/constants");
+const { restoreOnlyRun } = await import("../src/restoreImpl");
+const testUtils = await import("../src/utils/testUtils");
 
 beforeEach(() => {
-    jest.restoreAllMocks();
+    jest.clearAllMocks();
+    (core.getInput as jest.Mock).mockImplementation(
+        (name: string, options?: { required?: boolean }) => {
+            const val =
+                process.env[`INPUT_${name.replace(/ /g, "_").toUpperCase()}`] ||
+                "";
+            if (options && options.required && !val) {
+                throw new Error(`Input required and not supplied: ${name}`);
+            }
+            return val.trim();
+        }
+    );
+    (cache.isFeatureAvailable as jest.Mock).mockReturnValue(true);
     process.env[Events.Key] = Events.Push;
     process.env[RefKey] = "refs/heads/feature-branch";
-
-    jest.spyOn(actionUtils, "isGhes").mockImplementation(() => false);
-    jest.spyOn(actionUtils, "isCacheFeatureAvailable").mockImplementation(
-        () => true
-    );
 });
 
 afterEach(() => {
@@ -63,19 +78,12 @@ test("restore with no cache found", async () => {
         enableCrossOsArchive: false
     });
 
-    const infoMock = jest.spyOn(core, "info");
-    const failedMock = jest.spyOn(core, "setFailed");
-    const outputMock = jest.spyOn(core, "setOutput");
-    const restoreCacheMock = jest
-        .spyOn(cache, "restoreCache")
-        .mockImplementationOnce(() => {
-            return Promise.resolve(undefined);
-        });
+    (cache.restoreCache as jest.Mock).mockResolvedValue(undefined);
 
     await restoreOnlyRun();
 
-    expect(restoreCacheMock).toHaveBeenCalledTimes(1);
-    expect(restoreCacheMock).toHaveBeenCalledWith(
+    expect(cache.restoreCache).toHaveBeenCalledTimes(1);
+    expect(cache.restoreCache).toHaveBeenCalledWith(
         [path],
         key,
         [],
@@ -85,11 +93,10 @@ test("restore with no cache found", async () => {
         false
     );
 
-    expect(outputMock).toHaveBeenCalledWith("cache-primary-key", key);
-    expect(outputMock).toHaveBeenCalledTimes(1);
-    expect(failedMock).toHaveBeenCalledTimes(0);
-
-    expect(infoMock).toHaveBeenCalledWith(
+    expect(core.setOutput).toHaveBeenCalledWith("cache-primary-key", key);
+    expect(core.setOutput).toHaveBeenCalledTimes(1);
+    expect(core.setFailed).toHaveBeenCalledTimes(0);
+    expect(core.info).toHaveBeenCalledWith(
         `Cache not found for input keys: ${key}`
     );
 });
@@ -105,32 +112,14 @@ test("restore with restore keys and no cache found", async () => {
         enableCrossOsArchive: false
     });
 
-    const infoMock = jest.spyOn(core, "info");
-    const failedMock = jest.spyOn(core, "setFailed");
-    const outputMock = jest.spyOn(core, "setOutput");
-    const restoreCacheMock = jest
-        .spyOn(cache, "restoreCache")
-        .mockImplementationOnce(() => {
-            return Promise.resolve(undefined);
-        });
+    (cache.restoreCache as jest.Mock).mockResolvedValue(undefined);
 
     await restoreOnlyRun();
 
-    expect(restoreCacheMock).toHaveBeenCalledTimes(1);
-    expect(restoreCacheMock).toHaveBeenCalledWith(
-        [path],
-        key,
-        [restoreKey],
-        {
-            lookupOnly: false
-        },
-        false
-    );
-
-    expect(outputMock).toHaveBeenCalledWith("cache-primary-key", key);
-    expect(failedMock).toHaveBeenCalledTimes(0);
-
-    expect(infoMock).toHaveBeenCalledWith(
+    expect(cache.restoreCache).toHaveBeenCalledTimes(1);
+    expect(core.setOutput).toHaveBeenCalledWith("cache-primary-key", key);
+    expect(core.setFailed).toHaveBeenCalledTimes(0);
+    expect(core.info).toHaveBeenCalledWith(
         `Cache not found for input keys: ${key}, ${restoreKey}`
     );
 });
@@ -144,36 +133,17 @@ test("restore with cache found for key", async () => {
         enableCrossOsArchive: false
     });
 
-    const infoMock = jest.spyOn(core, "info");
-    const failedMock = jest.spyOn(core, "setFailed");
-    const outputMock = jest.spyOn(core, "setOutput");
-    const restoreCacheMock = jest
-        .spyOn(cache, "restoreCache")
-        .mockImplementationOnce(() => {
-            return Promise.resolve(key);
-        });
+    (cache.restoreCache as jest.Mock).mockResolvedValue(key);
 
     await restoreOnlyRun();
 
-    expect(restoreCacheMock).toHaveBeenCalledTimes(1);
-    expect(restoreCacheMock).toHaveBeenCalledWith(
-        [path],
-        key,
-        [],
-        {
-            lookupOnly: false
-        },
-        false
-    );
-
-    expect(outputMock).toHaveBeenCalledWith("cache-primary-key", key);
-    expect(outputMock).toHaveBeenCalledWith("cache-hit", "true");
-    expect(outputMock).toHaveBeenCalledWith("cache-matched-key", key);
-
-    expect(outputMock).toHaveBeenCalledTimes(3);
-
-    expect(infoMock).toHaveBeenCalledWith(`Cache restored from key: ${key}`);
-    expect(failedMock).toHaveBeenCalledTimes(0);
+    expect(cache.restoreCache).toHaveBeenCalledTimes(1);
+    expect(core.setOutput).toHaveBeenCalledWith("cache-primary-key", key);
+    expect(core.setOutput).toHaveBeenCalledWith("cache-hit", "true");
+    expect(core.setOutput).toHaveBeenCalledWith("cache-matched-key", key);
+    expect(core.setOutput).toHaveBeenCalledTimes(3);
+    expect(core.info).toHaveBeenCalledWith(`Cache restored from key: ${key}`);
+    expect(core.setFailed).toHaveBeenCalledTimes(0);
 });
 
 test("restore with cache found for restore key", async () => {
@@ -187,36 +157,20 @@ test("restore with cache found for restore key", async () => {
         enableCrossOsArchive: false
     });
 
-    const infoMock = jest.spyOn(core, "info");
-    const failedMock = jest.spyOn(core, "setFailed");
-    const outputMock = jest.spyOn(core, "setOutput");
-    const restoreCacheMock = jest
-        .spyOn(cache, "restoreCache")
-        .mockImplementationOnce(() => {
-            return Promise.resolve(restoreKey);
-        });
+    (cache.restoreCache as jest.Mock).mockResolvedValue(restoreKey);
 
     await restoreOnlyRun();
 
-    expect(restoreCacheMock).toHaveBeenCalledTimes(1);
-    expect(restoreCacheMock).toHaveBeenCalledWith(
-        [path],
-        key,
-        [restoreKey],
-        {
-            lookupOnly: false
-        },
-        false
+    expect(cache.restoreCache).toHaveBeenCalledTimes(1);
+    expect(core.setOutput).toHaveBeenCalledWith("cache-primary-key", key);
+    expect(core.setOutput).toHaveBeenCalledWith("cache-hit", "false");
+    expect(core.setOutput).toHaveBeenCalledWith(
+        "cache-matched-key",
+        restoreKey
     );
-
-    expect(outputMock).toHaveBeenCalledWith("cache-primary-key", key);
-    expect(outputMock).toHaveBeenCalledWith("cache-hit", "false");
-    expect(outputMock).toHaveBeenCalledWith("cache-matched-key", restoreKey);
-
-    expect(outputMock).toHaveBeenCalledTimes(3);
-
-    expect(infoMock).toHaveBeenCalledWith(
+    expect(core.setOutput).toHaveBeenCalledTimes(3);
+    expect(core.info).toHaveBeenCalledWith(
         `Cache restored from key: ${restoreKey}`
     );
-    expect(failedMock).toHaveBeenCalledTimes(0);
+    expect(core.setFailed).toHaveBeenCalledTimes(0);
 });

__tests__/save.test.ts

@@ -1,70 +1,66 @@
-import * as cache from "@actions/cache";
-import * as core from "@actions/core";
+import { afterEach, beforeEach, expect, jest, test } from "@jest/globals";
 
-import { Events, Inputs, RefKey } from "../src/constants";
-import { saveRun } from "../src/saveImpl";
-import * as actionUtils from "../src/utils/actionUtils";
-import * as testUtils from "../src/utils/testUtils";
-
-jest.mock("@actions/core");
-jest.mock("@actions/cache");
-jest.mock("../src/utils/actionUtils");
-
-beforeAll(() => {
-    jest.spyOn(core, "getInput").mockImplementation((name, options) => {
-        return jest.requireActual("@actions/core").getInput(name, options);
-    });
-
-    jest.spyOn(core, "getState").mockImplementation(name => {
-        return jest.requireActual("@actions/core").getState(name);
-    });
-
-    jest.spyOn(actionUtils, "getInputAsArray").mockImplementation(
-        (name, options) => {
-            return jest
-                .requireActual("../src/utils/actionUtils")
-                .getInputAsArray(name, options);
+// Mock @actions/core
+jest.unstable_mockModule("@actions/core", () => ({
+    getInput: jest.fn((name: string, options?: { required?: boolean }) => {
+        const val =
+            process.env[`INPUT_${name.replace(/ /g, "_").toUpperCase()}`] || "";
+        if (options && options.required && !val) {
+            throw new Error(`Input required and not supplied: ${name}`);
         }
-    );
+        return val.trim();
+    }),
+    setOutput: jest.fn(),
+    setFailed: jest.fn(),
+    info: jest.fn(),
+    warning: jest.fn(),
+    debug: jest.fn(),
+    error: jest.fn(),
+    saveState: jest.fn(),
+    getState: jest.fn(() => ""),
+    isDebug: jest.fn(() => false),
+    exportVariable: jest.fn(),
+    addPath: jest.fn(),
+    group: jest.fn((name: string, fn: () => Promise<unknown>) => fn()),
+    startGroup: jest.fn(),
+    endGroup: jest.fn()
+}));
 
-    jest.spyOn(actionUtils, "getInputAsInt").mockImplementation(
-        (name, options) => {
-            return jest
-                .requireActual("../src/utils/actionUtils")
-                .getInputAsInt(name, options);
+// Mock @actions/cache
+jest.unstable_mockModule("@actions/cache", () => ({
+    restoreCache: jest.fn(),
+    saveCache: jest.fn(),
+    isFeatureAvailable: jest.fn(() => true),
+    ReserveCacheError: class ReserveCacheError extends Error {
+        constructor(message: string) {
+            super(message);
+            this.name = "ReserveCacheError";
         }
-    );
+    }
+}));
 
-    jest.spyOn(actionUtils, "getInputAsBool").mockImplementation(
-        (name, options) => {
-            return jest
-                .requireActual("../src/utils/actionUtils")
-                .getInputAsBool(name, options);
-        }
-    );
-
-    jest.spyOn(actionUtils, "isExactKeyMatch").mockImplementation(
-        (key, cacheResult) => {
-            return jest
-                .requireActual("../src/utils/actionUtils")
-                .isExactKeyMatch(key, cacheResult);
-        }
-    );
-
-    jest.spyOn(actionUtils, "isValidEvent").mockImplementation(() => {
-        const actualUtils = jest.requireActual("../src/utils/actionUtils");
-        return actualUtils.isValidEvent();
-    });
-});
+const core = await import("@actions/core");
+const cache = await import("@actions/cache");
+const { Events, Inputs, RefKey } = await import("../src/constants");
+const { saveRun } = await import("../src/saveImpl");
+const testUtils = await import("../src/utils/testUtils");
 
 beforeEach(() => {
+    jest.clearAllMocks();
+    (core.getInput as jest.Mock).mockImplementation(
+        (name: string, options?: { required?: boolean }) => {
+            const val =
+                process.env[`INPUT_${name.replace(/ /g, "_").toUpperCase()}`] ||
+                "";
+            if (options && options.required && !val) {
+                throw new Error(`Input required and not supplied: ${name}`);
+            }
+            return val.trim();
+        }
+    );
+    (cache.isFeatureAvailable as jest.Mock).mockReturnValue(true);
     process.env[Events.Key] = Events.Push;
     process.env[RefKey] = "refs/heads/feature-branch";
-
-    jest.spyOn(actionUtils, "isGhes").mockImplementation(() => false);
-    jest.spyOn(actionUtils, "isCacheFeatureAvailable").mockImplementation(
-        () => true
-    );
 });
 
 afterEach(() => {
@@ -74,36 +70,24 @@ afterEach(() => {
 });
 
 test("save with valid inputs uploads a cache", async () => {
-    const failedMock = jest.spyOn(core, "setFailed");
-
     const primaryKey = "Linux-node-bb828da54c148048dd17899ba9fda624811cfb43";
     const savedCacheKey = "Linux-node-";
 
-    jest.spyOn(core, "getState")
-        // Cache Entry State
-        .mockImplementationOnce(() => {
-            return primaryKey;
-        })
-        // Cache Key State
-        .mockImplementationOnce(() => {
-            return savedCacheKey;
-        });
+    (core.getState as jest.Mock)
+        .mockReturnValueOnce(primaryKey)
+        .mockReturnValueOnce(savedCacheKey);
 
     const inputPath = "node_modules";
     testUtils.setInput(Inputs.Path, inputPath);
     testUtils.setInput(Inputs.UploadChunkSize, "4000000");
 
     const cacheId = 4;
-    const saveCacheMock = jest
-        .spyOn(cache, "saveCache")
-        .mockImplementationOnce(() => {
-            return Promise.resolve(cacheId);
-        });
+    (cache.saveCache as jest.Mock).mockResolvedValue(cacheId);
 
     await saveRun();
 
-    expect(saveCacheMock).toHaveBeenCalledTimes(1);
-    expect(saveCacheMock).toHaveBeenCalledWith(
+    expect(cache.saveCache).toHaveBeenCalledTimes(1);
+    expect(cache.saveCache).toHaveBeenCalledWith(
         [inputPath],
         primaryKey,
         {
@@ -112,5 +96,5 @@ test("save with valid inputs uploads a cache", async () => {
         false
     );
 
-    expect(failedMock).toHaveBeenCalledTimes(0);
+    expect(core.setFailed).toHaveBeenCalledTimes(0);
 });

__tests__/saveImpl.test.ts

@@ -1,68 +1,68 @@
-import * as cache from "@actions/cache";
-import * as core from "@actions/core";
+import { afterEach, beforeEach, expect, jest, test } from "@jest/globals";
 
-import { Events, Inputs, RefKey } from "../src/constants";
-import { saveImpl } from "../src/saveImpl";
-import { StateProvider } from "../src/stateProvider";
-import * as actionUtils from "../src/utils/actionUtils";
-import * as testUtils from "../src/utils/testUtils";
-
-jest.mock("@actions/core");
-jest.mock("@actions/cache");
-jest.mock("../src/utils/actionUtils");
-
-beforeAll(() => {
-    jest.spyOn(core, "getInput").mockImplementation((name, options) => {
-        return jest.requireActual("@actions/core").getInput(name, options);
-    });
-
-    jest.spyOn(actionUtils, "getInputAsArray").mockImplementation(
-        (name, options) => {
-            return jest
-                .requireActual("../src/utils/actionUtils")
-                .getInputAsArray(name, options);
+// Mock @actions/core
+jest.unstable_mockModule("@actions/core", () => ({
+    getInput: jest.fn((name: string, options?: { required?: boolean }) => {
+        const val =
+            process.env[`INPUT_${name.replace(/ /g, "_").toUpperCase()}`] || "";
+        if (options && options.required && !val) {
+            throw new Error(`Input required and not supplied: ${name}`);
         }
-    );
+        return val.trim();
+    }),
+    setOutput: jest.fn(),
+    setFailed: jest.fn(),
+    info: jest.fn(),
+    warning: jest.fn(),
+    debug: jest.fn(),
+    error: jest.fn(),
+    saveState: jest.fn(),
+    getState: jest.fn(() => ""),
+    isDebug: jest.fn(() => false),
+    exportVariable: jest.fn(),
+    addPath: jest.fn(),
+    group: jest.fn((name: string, fn: () => Promise<unknown>) => fn()),
+    startGroup: jest.fn(),
+    endGroup: jest.fn()
+}));
 
-    jest.spyOn(actionUtils, "getInputAsInt").mockImplementation(
-        (name, options) => {
-            return jest
-                .requireActual("../src/utils/actionUtils")
-                .getInputAsInt(name, options);
+// Mock @actions/cache
+jest.unstable_mockModule("@actions/cache", () => ({
+    restoreCache: jest.fn(),
+    saveCache: jest.fn(),
+    isFeatureAvailable: jest.fn(() => true),
+    ReserveCacheError: class ReserveCacheError extends Error {
+        constructor(message: string) {
+            super(message);
+            this.name = "ReserveCacheError";
         }
-    );
+    }
+}));
 
-    jest.spyOn(actionUtils, "getInputAsBool").mockImplementation(
-        (name, options) => {
-            return jest
-                .requireActual("../src/utils/actionUtils")
-                .getInputAsBool(name, options);
-        }
-    );
-
-    jest.spyOn(actionUtils, "isExactKeyMatch").mockImplementation(
-        (key, cacheResult) => {
-            return jest
-                .requireActual("../src/utils/actionUtils")
-                .isExactKeyMatch(key, cacheResult);
-        }
-    );
-
-    jest.spyOn(actionUtils, "isValidEvent").mockImplementation(() => {
-        const actualUtils = jest.requireActual("../src/utils/actionUtils");
-        return actualUtils.isValidEvent();
-    });
-});
+const core = await import("@actions/core");
+const cache = await import("@actions/cache");
+const { Events, Inputs, RefKey } = await import("../src/constants");
+const { saveImpl } = await import("../src/saveImpl");
+const { StateProvider } = await import("../src/stateProvider");
+const testUtils = await import("../src/utils/testUtils");
 
 beforeEach(() => {
-    jest.restoreAllMocks();
+    jest.clearAllMocks();
+    (core.getInput as jest.Mock).mockImplementation(
+        (name: string, options?: { required?: boolean }) => {
+            const val =
+                process.env[`INPUT_${name.replace(/ /g, "_").toUpperCase()}`] ||
+                "";
+            if (options && options.required && !val) {
+                throw new Error(`Input required and not supplied: ${name}`);
+            }
+            return val.trim();
+        }
+    );
+    (core.getState as jest.Mock).mockReturnValue("");
+    (cache.isFeatureAvailable as jest.Mock).mockReturnValue(true);
     process.env[Events.Key] = Events.Push;
     process.env[RefKey] = "refs/heads/feature-branch";
-
-    jest.spyOn(actionUtils, "isGhes").mockImplementation(() => false);
-    jest.spyOn(actionUtils, "isCacheFeatureAvailable").mockImplementation(
-        () => true
-    );
 });
 
 afterEach(() => {
@@ -72,99 +72,61 @@ afterEach(() => {
 });
 
 test("save with invalid event outputs warning", async () => {
-    const logWarningMock = jest.spyOn(actionUtils, "logWarning");
-    const failedMock = jest.spyOn(core, "setFailed");
     const invalidEvent = "commit_comment";
     process.env[Events.Key] = invalidEvent;
     delete process.env[RefKey];
     await saveImpl(new StateProvider());
-    expect(logWarningMock).toHaveBeenCalledWith(
-        `Event Validation Error: The event type ${invalidEvent} is not supported because it's not tied to a branch or tag ref.`
+    expect(core.info).toHaveBeenCalledWith(
+        `[warning]Event Validation Error: The event type ${invalidEvent} is not supported because it's not tied to a branch or tag ref.`
     );
-    expect(failedMock).toHaveBeenCalledTimes(0);
+    expect(core.setFailed).toHaveBeenCalledTimes(0);
 });
 
 test("save with no primary key in state outputs warning", async () => {
-    const logWarningMock = jest.spyOn(actionUtils, "logWarning");
-    const failedMock = jest.spyOn(core, "setFailed");
-
-    const savedCacheKey = "Linux-node-bb828da54c148048dd17899ba9fda624811cfb43";
-    jest.spyOn(core, "getState")
-        // Cache Entry State
-        .mockImplementationOnce(() => {
-            return "";
-        })
-        // Cache Key State
-        .mockImplementationOnce(() => {
-            return savedCacheKey;
-        });
-    const saveCacheMock = jest.spyOn(cache, "saveCache");
+    (core.getState as jest.Mock).mockReturnValue("");
 
     await saveImpl(new StateProvider());
 
-    expect(saveCacheMock).toHaveBeenCalledTimes(0);
-    expect(logWarningMock).toHaveBeenCalledWith(`Key is not specified.`);
-    expect(logWarningMock).toHaveBeenCalledTimes(1);
-    expect(failedMock).toHaveBeenCalledTimes(0);
+    expect(cache.saveCache).toHaveBeenCalledTimes(0);
+    expect(core.info).toHaveBeenCalledWith(`[warning]Key is not specified.`);
+    expect(core.setFailed).toHaveBeenCalledTimes(0);
 });
 
 test("save without AC available should no-op", async () => {
-    jest.spyOn(actionUtils, "isCacheFeatureAvailable").mockImplementation(
-        () => false
-    );
-
-    const saveCacheMock = jest.spyOn(cache, "saveCache");
+    (cache.isFeatureAvailable as jest.Mock).mockReturnValue(false);
 
     await saveImpl(new StateProvider());
 
-    expect(saveCacheMock).toHaveBeenCalledTimes(0);
+    expect(cache.saveCache).toHaveBeenCalledTimes(0);
 });
 
 test("save on ghes without AC available should no-op", async () => {
-    jest.spyOn(actionUtils, "isGhes").mockImplementation(() => true);
-    jest.spyOn(actionUtils, "isCacheFeatureAvailable").mockImplementation(
-        () => false
-    );
-
-    const saveCacheMock = jest.spyOn(cache, "saveCache");
+    (cache.isFeatureAvailable as jest.Mock).mockReturnValue(false);
 
     await saveImpl(new StateProvider());
 
-    expect(saveCacheMock).toHaveBeenCalledTimes(0);
+    expect(cache.saveCache).toHaveBeenCalledTimes(0);
 });
 
 test("save on GHES with AC available", async () => {
-    jest.spyOn(actionUtils, "isGhes").mockImplementation(() => true);
-    const failedMock = jest.spyOn(core, "setFailed");
-
     const primaryKey = "Linux-node-bb828da54c148048dd17899ba9fda624811cfb43";
     const savedCacheKey = "Linux-node-";
 
-    jest.spyOn(core, "getState")
-        // Cache Entry State
-        .mockImplementationOnce(() => {
-            return savedCacheKey;
-        })
-        // Cache Key State
-        .mockImplementationOnce(() => {
-            return primaryKey;
-        });
+    (core.getState as jest.Mock)
+        .mockReturnValueOnce(primaryKey)
+        .mockReturnValueOnce(savedCacheKey);
 
     const inputPath = "node_modules";
     testUtils.setInput(Inputs.Path, inputPath);
     testUtils.setInput(Inputs.UploadChunkSize, "4000000");
 
     const cacheId = 4;
-    const saveCacheMock = jest
-        .spyOn(cache, "saveCache")
-        .mockImplementationOnce(() => {
-            return Promise.resolve(cacheId);
-        });
+    (cache.saveCache as jest.Mock).mockResolvedValue(cacheId);
 
     await saveImpl(new StateProvider());
 
-    expect(saveCacheMock).toHaveBeenCalledTimes(1);
-    expect(saveCacheMock).toHaveBeenCalledWith(
+    expect(cache.saveCache).toHaveBeenCalledTimes(1);
+    expect(cache.saveCache).toHaveBeenCalledWith(
         [inputPath],
         primaryKey,
         {
@@ -173,229 +135,135 @@ test("save on GHES with AC available", async () => {
         false
     );
 
-    expect(failedMock).toHaveBeenCalledTimes(0);
+    expect(core.setFailed).toHaveBeenCalledTimes(0);
 });
 
 test("save with exact match returns early", async () => {
-    const infoMock = jest.spyOn(core, "info");
-    const failedMock = jest.spyOn(core, "setFailed");
-
     const primaryKey = "Linux-node-bb828da54c148048dd17899ba9fda624811cfb43";
-    const savedCacheKey = primaryKey;
 
-    jest.spyOn(core, "getState")
-        // Cache Entry State
-        .mockImplementationOnce(() => {
-            return savedCacheKey;
-        })
-        // Cache Key State
-        .mockImplementationOnce(() => {
-            return primaryKey;
-        });
-    const saveCacheMock = jest.spyOn(cache, "saveCache");
+    (core.getState as jest.Mock)
+        .mockReturnValueOnce(primaryKey)
+        .mockReturnValueOnce(primaryKey);
 
     await saveImpl(new StateProvider());
 
-    expect(saveCacheMock).toHaveBeenCalledTimes(0);
-    expect(infoMock).toHaveBeenCalledWith(
+    expect(cache.saveCache).toHaveBeenCalledTimes(0);
+    expect(core.info).toHaveBeenCalledWith(
         `Cache hit occurred on the primary key ${primaryKey}, not saving cache.`
     );
-    expect(failedMock).toHaveBeenCalledTimes(0);
+    expect(core.setFailed).toHaveBeenCalledTimes(0);
 });
 
 test("save with missing input outputs warning", async () => {
-    const logWarningMock = jest.spyOn(actionUtils, "logWarning");
-    const failedMock = jest.spyOn(core, "setFailed");
-
     const primaryKey = "Linux-node-bb828da54c148048dd17899ba9fda624811cfb43";
     const savedCacheKey = "Linux-node-";
 
-    jest.spyOn(core, "getState")
-        // Cache Entry State
-        .mockImplementationOnce(() => {
-            return savedCacheKey;
-        })
-        // Cache Key State
-        .mockImplementationOnce(() => {
-            return primaryKey;
-        });
-    const saveCacheMock = jest.spyOn(cache, "saveCache");
+    (core.getState as jest.Mock)
+        .mockReturnValueOnce(savedCacheKey)
+        .mockReturnValueOnce(primaryKey);
 
     await saveImpl(new StateProvider());
 
-    expect(saveCacheMock).toHaveBeenCalledTimes(0);
-    expect(logWarningMock).toHaveBeenCalledWith(
-        "Input required and not supplied: path"
+    expect(cache.saveCache).toHaveBeenCalledTimes(0);
+    expect(core.info).toHaveBeenCalledWith(
+        "[warning]Input required and not supplied: path"
     );
-    expect(logWarningMock).toHaveBeenCalledTimes(1);
-    expect(failedMock).toHaveBeenCalledTimes(0);
+    expect(core.setFailed).toHaveBeenCalledTimes(0);
 });
 
 test("save with large cache outputs warning", async () => {
-    const logWarningMock = jest.spyOn(actionUtils, "logWarning");
-    const failedMock = jest.spyOn(core, "setFailed");
-
     const primaryKey = "Linux-node-bb828da54c148048dd17899ba9fda624811cfb43";
     const savedCacheKey = "Linux-node-";
 
-    jest.spyOn(core, "getState")
-        // Cache Entry State
-        .mockImplementationOnce(() => {
-            return savedCacheKey;
-        })
-        // Cache Key State
-        .mockImplementationOnce(() => {
-            return primaryKey;
-        });
+    (core.getState as jest.Mock)
+        .mockReturnValueOnce(savedCacheKey)
+        .mockReturnValueOnce(primaryKey);
 
     const inputPath = "node_modules";
     testUtils.setInput(Inputs.Path, inputPath);
 
-    const saveCacheMock = jest
-        .spyOn(cache, "saveCache")
-        .mockImplementationOnce(() => {
-            throw new Error(
-                "Cache size of ~6144 MB (6442450944 B) is over the 5GB limit, not saving cache."
-            );
-        });
+    (cache.saveCache as jest.Mock).mockRejectedValue(
+        new Error(
+            "Cache size of ~6144 MB (6442450944 B) is over the 5GB limit, not saving cache."
+        )
+    );
 
     await saveImpl(new StateProvider());
 
-    expect(saveCacheMock).toHaveBeenCalledTimes(1);
-    expect(saveCacheMock).toHaveBeenCalledWith(
-        [inputPath],
-        primaryKey,
-        expect.anything(),
-        false
+    expect(cache.saveCache).toHaveBeenCalledTimes(1);
+    expect(core.info).toHaveBeenCalledWith(
+        "[warning]Cache size of ~6144 MB (6442450944 B) is over the 5GB limit, not saving cache."
     );
-
-    expect(logWarningMock).toHaveBeenCalledTimes(1);
-    expect(logWarningMock).toHaveBeenCalledWith(
-        "Cache size of ~6144 MB (6442450944 B) is over the 5GB limit, not saving cache."
-    );
-    expect(failedMock).toHaveBeenCalledTimes(0);
+    expect(core.setFailed).toHaveBeenCalledTimes(0);
 });
 
 test("save with reserve cache failure outputs warning", async () => {
-    const logWarningMock = jest.spyOn(actionUtils, "logWarning");
-    const failedMock = jest.spyOn(core, "setFailed");
-
     const primaryKey = "Linux-node-bb828da54c148048dd17899ba9fda624811cfb43";
     const savedCacheKey = "Linux-node-";
 
-    jest.spyOn(core, "getState")
-        // Cache Entry State
-        .mockImplementationOnce(() => {
-            return savedCacheKey;
-        })
-        // Cache Key State
-        .mockImplementationOnce(() => {
-            return primaryKey;
-        });
+    (core.getState as jest.Mock)
+        .mockReturnValueOnce(savedCacheKey)
+        .mockReturnValueOnce(primaryKey);
 
     const inputPath = "node_modules";
     testUtils.setInput(Inputs.Path, inputPath);
 
-    const saveCacheMock = jest
-        .spyOn(cache, "saveCache")
-        .mockImplementationOnce(() => {
-            const actualCache = jest.requireActual("@actions/cache");
-            const error = new actualCache.ReserveCacheError(
-                `Unable to reserve cache with key ${primaryKey}, another job may be creating this cache.`
-            );
-            throw error;
-        });
+    (cache.saveCache as jest.Mock).mockRejectedValue(
+        new Error(
+            `Unable to reserve cache with key ${primaryKey}, another job may be creating this cache.`
+        )
+    );
 
     await saveImpl(new StateProvider());
 
-    expect(saveCacheMock).toHaveBeenCalledTimes(1);
-    expect(saveCacheMock).toHaveBeenCalledWith(
-        [inputPath],
-        primaryKey,
-        expect.anything(),
-        false
+    expect(cache.saveCache).toHaveBeenCalledTimes(1);
+    expect(core.info).toHaveBeenCalledWith(
+        `[warning]Unable to reserve cache with key ${primaryKey}, another job may be creating this cache.`
     );
-
-    expect(logWarningMock).toHaveBeenCalledWith(
-        `Unable to reserve cache with key ${primaryKey}, another job may be creating this cache.`
-    );
-    expect(logWarningMock).toHaveBeenCalledTimes(1);
-    expect(failedMock).toHaveBeenCalledTimes(0);
+    expect(core.setFailed).toHaveBeenCalledTimes(0);
 });
 
 test("save with server error outputs warning", async () => {
-    const logWarningMock = jest.spyOn(actionUtils, "logWarning");
-    const failedMock = jest.spyOn(core, "setFailed");
-
     const primaryKey = "Linux-node-bb828da54c148048dd17899ba9fda624811cfb43";
     const savedCacheKey = "Linux-node-";
 
-    jest.spyOn(core, "getState")
-        // Cache Entry State
-        .mockImplementationOnce(() => {
-            return savedCacheKey;
-        })
-        // Cache Key State
-        .mockImplementationOnce(() => {
-            return primaryKey;
-        });
+    (core.getState as jest.Mock)
+        .mockReturnValueOnce(savedCacheKey)
+        .mockReturnValueOnce(primaryKey);
 
     const inputPath = "node_modules";
     testUtils.setInput(Inputs.Path, inputPath);
 
-    const saveCacheMock = jest
-        .spyOn(cache, "saveCache")
-        .mockImplementationOnce(() => {
-            throw new Error("HTTP Error Occurred");
-        });
+    (cache.saveCache as jest.Mock).mockRejectedValue(
+        new Error("HTTP Error Occurred")
+    );
 
     await saveImpl(new StateProvider());
 
-    expect(saveCacheMock).toHaveBeenCalledTimes(1);
-    expect(saveCacheMock).toHaveBeenCalledWith(
-        [inputPath],
-        primaryKey,
-        expect.anything(),
-        false
-    );
-
-    expect(logWarningMock).toHaveBeenCalledTimes(1);
-    expect(logWarningMock).toHaveBeenCalledWith("HTTP Error Occurred");
-
-    expect(failedMock).toHaveBeenCalledTimes(0);
+    expect(cache.saveCache).toHaveBeenCalledTimes(1);
+    expect(core.info).toHaveBeenCalledWith("[warning]HTTP Error Occurred");
+    expect(core.setFailed).toHaveBeenCalledTimes(0);
 });
 
 test("save with valid inputs uploads a cache", async () => {
-    const failedMock = jest.spyOn(core, "setFailed");
-
     const primaryKey = "Linux-node-bb828da54c148048dd17899ba9fda624811cfb43";
     const savedCacheKey = "Linux-node-";
 
-    jest.spyOn(core, "getState")
-        // Cache Entry State
-        .mockImplementationOnce(() => {
-            return savedCacheKey;
-        })
-        // Cache Key State
-        .mockImplementationOnce(() => {
-            return primaryKey;
-        });
+    (core.getState as jest.Mock)
+        .mockReturnValueOnce(primaryKey)
+        .mockReturnValueOnce(savedCacheKey);
 
     const inputPath = "node_modules";
     testUtils.setInput(Inputs.Path, inputPath);
     testUtils.setInput(Inputs.UploadChunkSize, "4000000");
 
     const cacheId = 4;
-    const saveCacheMock = jest
-        .spyOn(cache, "saveCache")
-        .mockImplementationOnce(() => {
-            return Promise.resolve(cacheId);
-        });
+    (cache.saveCache as jest.Mock).mockResolvedValue(cacheId);
 
     await saveImpl(new StateProvider());
 
-    expect(saveCacheMock).toHaveBeenCalledTimes(1);
-    expect(saveCacheMock).toHaveBeenCalledWith(
+    expect(cache.saveCache).toHaveBeenCalledTimes(1);
+    expect(cache.saveCache).toHaveBeenCalledWith(
         [inputPath],
         primaryKey,
         {
@@ -404,5 +272,5 @@ test("save with valid inputs uploads a cache", async () => {
         false
     );
 
-    expect(failedMock).toHaveBeenCalledTimes(0);
+    expect(core.setFailed).toHaveBeenCalledTimes(0);
 });

__tests__/saveOnly.test.ts

@@ -1,70 +1,66 @@
-import * as cache from "@actions/cache";
-import * as core from "@actions/core";
+import { afterEach, beforeEach, expect, jest, test } from "@jest/globals";
 
-import { Events, Inputs, RefKey } from "../src/constants";
-import { saveOnlyRun } from "../src/saveImpl";
-import * as actionUtils from "../src/utils/actionUtils";
-import * as testUtils from "../src/utils/testUtils";
-
-jest.mock("@actions/core");
-jest.mock("@actions/cache");
-jest.mock("../src/utils/actionUtils");
-
-beforeAll(() => {
-    jest.spyOn(core, "getInput").mockImplementation((name, options) => {
-        return jest.requireActual("@actions/core").getInput(name, options);
-    });
-
-    jest.spyOn(core, "setOutput").mockImplementation((key, value) => {
-        return jest.requireActual("@actions/core").getInput(key, value);
-    });
-
-    jest.spyOn(actionUtils, "getInputAsArray").mockImplementation(
-        (name, options) => {
-            return jest
-                .requireActual("../src/utils/actionUtils")
-                .getInputAsArray(name, options);
+// Mock @actions/core
+jest.unstable_mockModule("@actions/core", () => ({
+    getInput: jest.fn((name: string, options?: { required?: boolean }) => {
+        const val =
+            process.env[`INPUT_${name.replace(/ /g, "_").toUpperCase()}`] || "";
+        if (options && options.required && !val) {
+            throw new Error(`Input required and not supplied: ${name}`);
         }
-    );
+        return val.trim();
+    }),
+    setOutput: jest.fn(),
+    setFailed: jest.fn(),
+    info: jest.fn(),
+    warning: jest.fn(),
+    debug: jest.fn(),
+    error: jest.fn(),
+    saveState: jest.fn(),
+    getState: jest.fn(() => ""),
+    isDebug: jest.fn(() => false),
+    exportVariable: jest.fn(),
+    addPath: jest.fn(),
+    group: jest.fn((name: string, fn: () => Promise<unknown>) => fn()),
+    startGroup: jest.fn(),
+    endGroup: jest.fn()
+}));
 
-    jest.spyOn(actionUtils, "getInputAsInt").mockImplementation(
-        (name, options) => {
-            return jest
-                .requireActual("../src/utils/actionUtils")
-                .getInputAsInt(name, options);
+// Mock @actions/cache
+jest.unstable_mockModule("@actions/cache", () => ({
+    restoreCache: jest.fn(),
+    saveCache: jest.fn(),
+    isFeatureAvailable: jest.fn(() => true),
+    ReserveCacheError: class ReserveCacheError extends Error {
+        constructor(message: string) {
+            super(message);
+            this.name = "ReserveCacheError";
         }
-    );
+    }
+}));
 
-    jest.spyOn(actionUtils, "getInputAsBool").mockImplementation(
-        (name, options) => {
-            return jest
-                .requireActual("../src/utils/actionUtils")
-                .getInputAsBool(name, options);
-        }
-    );
-
-    jest.spyOn(actionUtils, "isExactKeyMatch").mockImplementation(
-        (key, cacheResult) => {
-            return jest
-                .requireActual("../src/utils/actionUtils")
-                .isExactKeyMatch(key, cacheResult);
-        }
-    );
-
-    jest.spyOn(actionUtils, "isValidEvent").mockImplementation(() => {
-        const actualUtils = jest.requireActual("../src/utils/actionUtils");
-        return actualUtils.isValidEvent();
-    });
-});
+const core = await import("@actions/core");
+const cache = await import("@actions/cache");
+const { Events, Inputs, RefKey } = await import("../src/constants");
+const { saveOnlyRun } = await import("../src/saveImpl");
+const testUtils = await import("../src/utils/testUtils");
 
 beforeEach(() => {
+    jest.clearAllMocks();
+    (core.getInput as jest.Mock).mockImplementation(
+        (name: string, options?: { required?: boolean }) => {
+            const val =
+                process.env[`INPUT_${name.replace(/ /g, "_").toUpperCase()}`] ||
+                "";
+            if (options && options.required && !val) {
+                throw new Error(`Input required and not supplied: ${name}`);
+            }
+            return val.trim();
+        }
+    );
+    (cache.isFeatureAvailable as jest.Mock).mockReturnValue(true);
     process.env[Events.Key] = Events.Push;
     process.env[RefKey] = "refs/heads/feature-branch";
-
-    jest.spyOn(actionUtils, "isGhes").mockImplementation(() => false);
-    jest.spyOn(actionUtils, "isCacheFeatureAvailable").mockImplementation(
-        () => true
-    );
 });
 
 afterEach(() => {
@@ -74,8 +70,6 @@ afterEach(() => {
 });
 
 test("save with valid inputs uploads a cache", async () => {
-    const failedMock = jest.spyOn(core, "setFailed");
-
     const primaryKey = "Linux-node-bb828da54c148048dd17899ba9fda624811cfb43";
 
     const inputPath = "node_modules";
@@ -84,16 +78,12 @@ test("save with valid inputs uploads a cache", async () => {
     testUtils.setInput(Inputs.UploadChunkSize, "4000000");
 
     const cacheId = 4;
-    const saveCacheMock = jest
-        .spyOn(cache, "saveCache")
-        .mockImplementationOnce(() => {
-            return Promise.resolve(cacheId);
-        });
+    (cache.saveCache as jest.Mock).mockResolvedValue(cacheId);
 
     await saveOnlyRun();
 
-    expect(saveCacheMock).toHaveBeenCalledTimes(1);
-    expect(saveCacheMock).toHaveBeenCalledWith(
+    expect(cache.saveCache).toHaveBeenCalledTimes(1);
+    expect(cache.saveCache).toHaveBeenCalledWith(
         [inputPath],
         primaryKey,
         {
@@ -102,12 +92,10 @@ test("save with valid inputs uploads a cache", async () => {
         false
     );
 
-    expect(failedMock).toHaveBeenCalledTimes(0);
+    expect(core.setFailed).toHaveBeenCalledTimes(0);
 });
 
 test("save failing logs the warning message", async () => {
-    const warningMock = jest.spyOn(core, "warning");
-
     const primaryKey = "Linux-node-bb828da54c148048dd17899ba9fda624811cfb43";
 
     const inputPath = "node_modules";
@@ -116,16 +104,12 @@ test("save failing logs the warning message", async () => {
     testUtils.setInput(Inputs.UploadChunkSize, "4000000");
 
     const cacheId = -1;
-    const saveCacheMock = jest
-        .spyOn(cache, "saveCache")
-        .mockImplementationOnce(() => {
-            return Promise.resolve(cacheId);
-        });
+    (cache.saveCache as jest.Mock).mockResolvedValue(cacheId);
 
     await saveOnlyRun();
 
-    expect(saveCacheMock).toHaveBeenCalledTimes(1);
-    expect(saveCacheMock).toHaveBeenCalledWith(
+    expect(cache.saveCache).toHaveBeenCalledTimes(1);
+    expect(cache.saveCache).toHaveBeenCalledWith(
         [inputPath],
         primaryKey,
         {
@@ -134,6 +118,6 @@ test("save failing logs the warning message", async () => {
         false
     );
 
-    expect(warningMock).toHaveBeenCalledTimes(1);
-    expect(warningMock).toHaveBeenCalledWith("Cache save failed.");
+    expect(core.warning).toHaveBeenCalledTimes(1);
+    expect(core.warning).toHaveBeenCalledWith("Cache save failed.");
 });

__tests__/stateProvider.test.ts

@@ -1,22 +1,41 @@
-import * as core from "@actions/core";
+import { afterEach, beforeEach, expect, jest, test } from "@jest/globals";
 
-import { Events, RefKey, State } from "../src/constants";
-import {
-    IStateProvider,
-    NullStateProvider,
-    StateProvider
-} from "../src/stateProvider";
+import type { IStateProvider } from "../src/stateProvider";
 
-jest.mock("@actions/core");
+// Mock @actions/core
+jest.unstable_mockModule("@actions/core", () => ({
+    getInput: jest.fn((name: string, options?: { required?: boolean }) => {
+        const val =
+            process.env[`INPUT_${name.replace(/ /g, "_").toUpperCase()}`] || "";
+        if (options && options.required && !val) {
+            throw new Error(`Input required and not supplied: ${name}`);
+        }
+        return val.trim();
+    }),
+    setOutput: jest.fn(),
+    setFailed: jest.fn(),
+    info: jest.fn(),
+    warning: jest.fn(),
+    debug: jest.fn(),
+    error: jest.fn(),
+    saveState: jest.fn(),
+    getState: jest.fn(() => ""),
+    isDebug: jest.fn(() => false),
+    exportVariable: jest.fn(),
+    addPath: jest.fn(),
+    group: jest.fn((name: string, fn: () => Promise<unknown>) => fn()),
+    startGroup: jest.fn(),
+    endGroup: jest.fn()
+}));
 
-beforeAll(() => {
-    jest.spyOn(core, "getInput").mockImplementation((name, options) => {
-        return jest.requireActual("@actions/core").getInput(name, options);
-    });
+const core = await import("@actions/core");
+const { Events, RefKey, State } = await import("../src/constants");
+const { NullStateProvider, StateProvider } =
+    await import("../src/stateProvider");
 
-    jest.spyOn(core, "setOutput").mockImplementation((key, value) => {
-        return jest.requireActual("@actions/core").setOutput(key, value);
-    });
+beforeEach(() => {
+    jest.clearAllMocks();
+    (core.getState as jest.Mock).mockReturnValue("");
 });
 
 afterEach(() => {
@@ -26,21 +45,14 @@ afterEach(() => {
 
 test("StateProvider saves states", async () => {
     const states = new Map<string, string>();
-    const getStateMock = jest
-        .spyOn(core, "getState")
-        .mockImplementation(key => states.get(key) || "");
-
-    const saveStateMock = jest
-        .spyOn(core, "saveState")
-        .mockImplementation((key, value) => {
+    (core.getState as jest.Mock).mockImplementation(
+        (key: string) => states.get(key) || ""
+    );
+    (core.saveState as jest.Mock).mockImplementation(
+        (key: string, value: string) => {
             states.set(key, value);
-        });
-
-    const setOutputMock = jest
-        .spyOn(core, "setOutput")
-        .mockImplementation((key, value) => {
-            return jest.requireActual("@actions/core").setOutput(key, value);
-        });
+        }
+    );
 
     const cacheMatchedKey = "node-cache";
 
@@ -52,38 +64,19 @@ test("StateProvider saves states", async () => {
 
     expect(stateValue).toBe("stateValue");
     expect(cacheStateValue).toBe(cacheMatchedKey);
-    expect(getStateMock).toHaveBeenCalledTimes(2);
-    expect(saveStateMock).toHaveBeenCalledTimes(2);
-    expect(setOutputMock).toHaveBeenCalledTimes(0);
+    expect(core.getState).toHaveBeenCalledTimes(2);
+    expect(core.saveState).toHaveBeenCalledTimes(2);
+    expect(core.setOutput).toHaveBeenCalledTimes(0);
 });
 
 test("NullStateProvider saves outputs", async () => {
-    const getStateMock = jest
-        .spyOn(core, "getState")
-        .mockImplementation(name =>
-            jest.requireActual("@actions/core").getState(name)
-        );
-
-    const setOutputMock = jest
-        .spyOn(core, "setOutput")
-        .mockImplementation((key, value) => {
-            return jest.requireActual("@actions/core").setOutput(key, value);
-        });
-
-    const saveStateMock = jest
-        .spyOn(core, "saveState")
-        .mockImplementation((key, value) => {
-            return jest.requireActual("@actions/core").saveState(key, value);
-        });
-
-    const cacheMatchedKey = "node-cache";
     const nullStateProvider: IStateProvider = new NullStateProvider();
     nullStateProvider.setState(State.CacheMatchedKey, "outputValue");
-    nullStateProvider.setState(State.CachePrimaryKey, cacheMatchedKey);
+    nullStateProvider.setState(State.CachePrimaryKey, "node-cache");
     nullStateProvider.getState("outputKey");
     nullStateProvider.getCacheState();
 
-    expect(getStateMock).toHaveBeenCalledTimes(0);
-    expect(setOutputMock).toHaveBeenCalledTimes(2);
-    expect(saveStateMock).toHaveBeenCalledTimes(0);
+    expect(core.getState).toHaveBeenCalledTimes(0);
+    expect(core.setOutput).toHaveBeenCalledTimes(2);
+    expect(core.saveState).toHaveBeenCalledTimes(0);
 });

caching-strategies.md

@@ -12,7 +12,7 @@ This document lists some of the strategies (and example workflows if possible) w
 jobs:
   build:
     runs-on: ubuntu-latest
-    - uses: actions/cache@v5
+    - uses: actions/cache@v6
       with:
         key: ${{ some-metadata }}-cache
 ```
@@ -24,7 +24,7 @@ In your workflows, you can use different strategies to name your key depending o
 One of the most common use case is to use hash for lockfile as key. This way, same cache will be restored for a lockfile until there's a change in dependencies listed in lockfile.
 
 ```yaml
-  - uses: actions/cache@v5
+  - uses: actions/cache@v6
     with:
       path: |
         path/to/dependencies
@@ -37,7 +37,7 @@ One of the most common use case is to use hash for lockfile as key. This way, sa
 If cache is not found matching the primary key, restore keys can be used to download the closest matching cache that was recently created. This ensures that the build/install step will need to additionally fetch just a handful of newer dependencies, and hence saving build time.
 
 ```yaml
-  - uses: actions/cache@v5
+  - uses: actions/cache@v6
     with:
       path: |
         path/to/dependencies
@@ -54,7 +54,7 @@ The restore keys can be provided as a complete name, or a prefix, read more [her
 In case of workflows with matrix running for multiple Operating Systems, the caches can be stored separately for each of them. This can be used in combination with hashfiles in case multiple caches are being generated per OS.
 
 ```yaml
-  - uses: actions/cache@v5
+  - uses: actions/cache@v6
     with:
       path: |
         path/to/dependencies
@@ -73,7 +73,7 @@ Caches scoped to the particular workflow run id or run attempt can be stored and
 On similar lines, commit sha can be used to create a very specialized and short lived cache.
 
 ```yaml
-  - uses: actions/cache@v5
+  - uses: actions/cache@v6
     with:
       path: |
         path/to/dependencies
@@ -86,7 +86,7 @@ On similar lines, commit sha can be used to create a very specialized and short
 Cache key can be formed by combination of more than one metadata, evaluated info.
 
 ```yaml
-  - uses: actions/cache@v5
+  - uses: actions/cache@v6
     with:
       path: |
         path/to/dependencies
@@ -148,7 +148,7 @@ In case you are using a centralized job to create and save your cache that can b
 steps:
   - uses: actions/checkout@v6
 
-  - uses: actions/cache/restore@v5
+  - uses: actions/cache/restore@v6
     id: cache
     with:
       path: path/to/dependencies
@@ -173,7 +173,7 @@ You can use the output of this action to exit the workflow on cache miss. This w
 steps:
   - uses: actions/checkout@v6
 
-  - uses: actions/cache/restore@v5
+  - uses: actions/cache/restore@v6
     id: cache
     with:
       path: path/to/dependencies
@@ -194,7 +194,7 @@ steps:
 If you want to avoid re-computing the cache key again in `save` action, the outputs from `restore` action can be used as input to the `save` action.
 
 ```yaml
-  - uses: actions/cache/restore@v5
+  - uses: actions/cache/restore@v6
     id: restore-cache
     with:
       path: |
@@ -204,7 +204,7 @@ If you want to avoid re-computing the cache key again in `save` action, the outp
   .
   .
   .
-  - uses: actions/cache/save@v5
+  - uses: actions/cache/save@v6
     with:
       path: |
         path/to/dependencies
@@ -219,7 +219,7 @@ On the other hand, the key can also be explicitly re-computed while executing th
 Let's say we have a restore step that computes key at runtime
 
 ```yaml
-uses: actions/cache/restore@v5
+uses: actions/cache/restore@v6
 id: restore-cache
 with:
     key: cache-${{ hashFiles('**/lockfiles') }}
@@ -228,7 +228,7 @@ with:
 Case 1: Where an user would want to reuse the key as it is
 
 ```yaml
-uses: actions/cache/save@v5
+uses: actions/cache/save@v6
 with:
     key: ${{ steps.restore-cache.outputs.cache-primary-key }}
 ```
@@ -236,7 +236,7 @@ with:
 Case 2: Where the user would want to re-evaluate the key
 
 ```yaml
-uses: actions/cache/save@v5
+uses: actions/cache/save@v6
 with:
     key: npm-cache-${{hashfiles(package-lock.json)}}
 ```
@@ -258,7 +258,7 @@ steps:
   - name: Build
     run: ./build-parent-module.sh
 
-  - uses: actions/cache/save@v5
+  - uses: actions/cache/save@v6
     id: cache
     with:
       path: path/to/dependencies
@@ -271,7 +271,7 @@ steps:
 steps:
   - uses: actions/checkout@v6
 
-  - uses: actions/cache/restore@v5
+  - uses: actions/cache/restore@v6
     id: cache
     with:
       path: path/to/dependencies

examples.md

@@ -45,7 +45,7 @@
 ## Bun
 
 ```yaml
-- uses: actions/cache@v5
+- uses: actions/cache@v6
   with:
     path: |
       ~/.bun/install/cache
@@ -55,7 +55,7 @@
 ### Windows
 
 ```yaml
-- uses: actions/cache@v5
+- uses: actions/cache@v6
   with:
     path: |
       ~\.bun
@@ -67,7 +67,7 @@
 Using [NuGet lock files](https://docs.microsoft.com/nuget/consume-packages/package-references-in-project-files#locking-dependencies):
 
 ```yaml
-- uses: actions/cache@v5
+- uses: actions/cache@v6
   with:
     path: ~/.nuget/packages
     key: ${{ runner.os }}-nuget-${{ hashFiles('**/packages.lock.json') }}
@@ -79,7 +79,7 @@ Depending on the environment, huge packages might be pre-installed in the global
 From `actions/cache@v3` onwards, you can now exclude unwanted packages with [exclude pattern](https://github.com/actions/toolkit/tree/main/packages/glob#exclude-patterns)
 
 ```yaml
-- uses: actions/cache@v5
+- uses: actions/cache@v6
   with:
     path: |
       ~/.nuget/packages
@@ -96,7 +96,7 @@ Or you could move the cache folder like below.
 env:
   NUGET_PACKAGES: ${{ github.workspace }}/.nuget/packages
 steps:
-  - uses: actions/cache@v5
+  - uses: actions/cache@v6
     with:
       path: ${{ github.workspace }}/.nuget/packages
       key: ${{ runner.os }}-nuget-${{ hashFiles('**/packages.lock.json') }}
@@ -108,7 +108,7 @@ steps:
 
 ```yaml
 - name: Cache lein project dependencies
-  uses: actions/cache@v5
+  uses: actions/cache@v6
   with:
     path: ~/.m2/repository
     key: ${{ runner.os }}-clojure-${{ hashFiles('**/project.clj') }}
@@ -122,7 +122,7 @@ steps:
 ### POSIX
 
 ```yaml
-- uses: actions/cache@v5
+- uses: actions/cache@v6
   with:
     path: ~/.dub
     key: ${{ runner.os }}-dub-${{ hashFiles('**/dub.selections.json') }}
@@ -133,7 +133,7 @@ steps:
 ### Windows
 
 ```yaml
-- uses: actions/cache@v5
+- uses: actions/cache@v6
   with:
     path: ~\AppData\Local\dub
     key: ${{ runner.os }}-dub-${{ hashFiles('**/dub.selections.json') }}
@@ -146,7 +146,7 @@ steps:
 ### Linux
 
 ```yaml
-- uses: actions/cache@v5
+- uses: actions/cache@v6
   with:
     path: |
       ~/.deno
@@ -157,7 +157,7 @@ steps:
 ### macOS
 
 ```yaml
-- uses: actions/cache@v5
+- uses: actions/cache@v6
   with:
     path: |
       ~/.deno
@@ -168,7 +168,7 @@ steps:
 ### Windows
 
 ```yaml
-- uses: actions/cache@v5
+- uses: actions/cache@v6
   with:
     path: |
       ~\.deno
@@ -179,7 +179,7 @@ steps:
 ## Elixir - Mix
 
 ```yaml
-- uses: actions/cache@v5
+- uses: actions/cache@v6
   with:
     path: |
       deps
@@ -191,7 +191,7 @@ steps:
 
 ## Erlang - Rebar3
 ```yaml
-- uses: actions/cache@v5
+- uses: actions/cache@v6
   with:
     path: |
       ~/.cache/rebar3
@@ -206,7 +206,7 @@ steps:
 ### Linux
 
 ```yaml
-- uses: actions/cache@v5
+- uses: actions/cache@v6
   with:
     path: |
       ~/.cache/go-build
@@ -219,7 +219,7 @@ steps:
 ### macOS
 
 ```yaml
-- uses: actions/cache@v5
+- uses: actions/cache@v6
   with:
     path: |
       ~/Library/Caches/go-build
@@ -232,7 +232,7 @@ steps:
 ### Windows
 
 ```yaml
-- uses: actions/cache@v5
+- uses: actions/cache@v6
   with:
     path: |
       ~\AppData\Local\go-build
@@ -248,7 +248,7 @@ We cache the elements of the Cabal store separately, as the entirety of `~/.caba
 
 ```yaml
 - name: Cache ~/.cabal/packages, ~/.cabal/store and dist-newstyle
-  uses: actions/cache@v5
+  uses: actions/cache@v6
   with:
     path: |
       ~/.cabal/packages
@@ -263,14 +263,14 @@ We cache the elements of the Cabal store separately, as the entirety of `~/.caba
 ### Linux or macOS
 
 ```yaml
-- uses: actions/cache@v5
+- uses: actions/cache@v6
   name: Cache ~/.stack
   with:
     path: ~/.stack
     key: ${{ runner.os }}-stack-global-${{ hashFiles('stack.yaml') }}-${{ hashFiles('package.yaml') }}
     restore-keys: |
       ${{ runner.os }}-stack-global-
-- uses: actions/cache@v5
+- uses: actions/cache@v6
   name: Cache .stack-work
   with:
     path: .stack-work
@@ -282,7 +282,7 @@ We cache the elements of the Cabal store separately, as the entirety of `~/.caba
 ### Windows
 
 ```yaml
-- uses: actions/cache@v5
+- uses: actions/cache@v6
   name: Cache %APPDATA%\stack %LOCALAPPDATA%\Programs\stack
   with:
     path: |
@@ -291,7 +291,7 @@ We cache the elements of the Cabal store separately, as the entirety of `~/.caba
     key: ${{ runner.os }}-stack-global-${{ hashFiles('stack.yaml') }}-${{ hashFiles('package.yaml') }}
     restore-keys: |
       ${{ runner.os }}-stack-global-
-- uses: actions/cache@v5
+- uses: actions/cache@v6
   name: Cache .stack-work
   with:
     path: .stack-work
@@ -305,7 +305,7 @@ We cache the elements of the Cabal store separately, as the entirety of `~/.caba
 > **Note** Ensure no Gradle daemons are running anymore when your workflow completes. Creating the cache package might fail due to locks being held by Gradle. Refer to the [Gradle Daemon documentation](https://docs.gradle.org/current/userguide/gradle_daemon.html) on how to disable or stop the Gradle Daemons.
 
 ```yaml
-- uses: actions/cache@v5
+- uses: actions/cache@v6
   with:
     path: |
       ~/.gradle/caches
@@ -319,7 +319,7 @@ We cache the elements of the Cabal store separately, as the entirety of `~/.caba
 
 ```yaml
 - name: Cache local Maven repository
-  uses: actions/cache@v5
+  uses: actions/cache@v6
   with:
     path: ~/.m2/repository
     key: ${{ runner.os }}-maven-${{ hashFiles('**/pom.xml') }}
@@ -355,7 +355,7 @@ After [deprecation](https://github.blog/changelog/2022-10-11-github-actions-depr
 `Get npm cache directory` step can then be used with `actions/cache` as shown below
 
 ```yaml
-- uses: actions/cache@v5
+- uses: actions/cache@v6
   id: npm-cache # use this to check for `cache-hit` ==> if: steps.npm-cache.outputs.cache-hit != 'true'
   with:
     path: ${{ steps.npm-cache-dir.outputs.dir }}
@@ -368,7 +368,7 @@ After [deprecation](https://github.blog/changelog/2022-10-11-github-actions-depr
 
 ```yaml
 - name: restore lerna
-  uses: actions/cache@v5
+  uses: actions/cache@v6
   with:
     path: '**/node_modules'
     key: ${{ runner.os }}-${{ hashFiles('**/yarn.lock') }}
@@ -382,7 +382,7 @@ The yarn cache directory will depend on your operating system and version of `ya
   id: yarn-cache-dir-path
   run: echo "dir=$(yarn cache dir)" >> $GITHUB_OUTPUT
 
-- uses: actions/cache@v5
+- uses: actions/cache@v6
   id: yarn-cache # use this to check for `cache-hit` (`steps.yarn-cache.outputs.cache-hit != 'true'`)
   with:
     path: ${{ steps.yarn-cache-dir-path.outputs.dir }}
@@ -400,7 +400,7 @@ The yarn 2 cache directory will depend on your config. See https://yarnpkg.com/c
   id: yarn-cache-dir-path
   run: echo "dir=$(yarn config get cacheFolder)" >> $GITHUB_OUTPUT
 
-- uses: actions/cache@v5
+- uses: actions/cache@v6
   id: yarn-cache # use this to check for `cache-hit` (`steps.yarn-cache.outputs.cache-hit != 'true'`)
   with:
     path: ${{ steps.yarn-cache-dir-path.outputs.dir }}
@@ -415,7 +415,7 @@ Esy allows you to export built dependencies and import pre-built dependencies.
 ```yaml
     - name: Restore Cache
       id: restore-cache
-      uses: actions/cache@v5
+      uses: actions/cache@v6
       with:
         path: _export
         key:  ${{ runner.os }}-esy-${{ hashFiles('esy.lock/index.json') }}
@@ -444,7 +444,7 @@ Esy allows you to export built dependencies and import pre-built dependencies.
   id: composer-cache
   run: |
     echo "dir=$(composer config cache-files-dir)" >> $GITHUB_OUTPUT
-- uses: actions/cache@v5
+- uses: actions/cache@v6
   with:
     path: ${{ steps.composer-cache.outputs.dir }}
     key: ${{ runner.os }}-composer-${{ hashFiles('**/composer.lock') }}
@@ -465,7 +465,7 @@ Locations:
 ### Simple example
 
 ```yaml
-- uses: actions/cache@v5
+- uses: actions/cache@v6
   with:
     path: ~/.cache/pip
     key: ${{ runner.os }}-pip-${{ hashFiles('**/requirements.txt') }}
@@ -478,7 +478,7 @@ Replace `~/.cache/pip` with the correct `path` if not using Ubuntu.
 ### Multiple OS's in a workflow
 
 ```yaml
-- uses: actions/cache@v5
+- uses: actions/cache@v6
   if: startsWith(runner.os, 'Linux')
   with:
     path: ~/.cache/pip
@@ -486,7 +486,7 @@ Replace `~/.cache/pip` with the correct `path` if not using Ubuntu.
     restore-keys: |
       ${{ runner.os }}-pip-
 
-- uses: actions/cache@v5
+- uses: actions/cache@v6
   if: startsWith(runner.os, 'macOS')
   with:
     path: ~/Library/Caches/pip
@@ -494,7 +494,7 @@ Replace `~/.cache/pip` with the correct `path` if not using Ubuntu.
     restore-keys: |
       ${{ runner.os }}-pip-
 
-- uses: actions/cache@v5
+- uses: actions/cache@v6
   if: startsWith(runner.os, 'Windows')
   with:
     path: ~\AppData\Local\pip\Cache
@@ -520,7 +520,7 @@ jobs:
         - os: windows-latest
           path: ~\AppData\Local\pip\Cache
     steps:
-    - uses: actions/cache@v5
+    - uses: actions/cache@v6
       with:
         path: ${{ matrix.path }}
         key: ${{ runner.os }}-pip-${{ hashFiles('**/requirements.txt') }}
@@ -539,7 +539,7 @@ jobs:
     echo "dir=$(pip cache dir)" >> $GITHUB_OUTPUT
 
 - name: pip cache
-  uses: actions/cache@v5
+  uses: actions/cache@v6
   with:
     path: ${{ steps.pip-cache.outputs.dir }}
     key: ${{ runner.os }}-pip-${{ hashFiles('**/requirements.txt') }}
@@ -557,7 +557,7 @@ jobs:
 
   ⋮
 
-- uses: actions/cache@v5
+- uses: actions/cache@v6
   with:
     path: ~/.local/share/virtualenvs
     key: ${{ runner.os }}-python-${{ steps.setup-python.outputs.python-version }}-pipenv-${{ hashFiles('Pipfile.lock') }}
@@ -584,7 +584,7 @@ For renv, the cache directory will vary by OS. The `RENV_PATHS_ROOT` environment
     cat("##[set-output name=r-version;]", R.Version()$version.string, sep = "")
   shell: Rscript {0}
 - name: Restore Renv package cache
-  uses: actions/cache@v5
+  uses: actions/cache@v6
   with:
     path: ${{ env.RENV_PATHS_ROOT }}
     key: ${{ steps.get-version.outputs.os-version }}-${{ steps.get-version.outputs.r-version }}-${{ inputs.cache-version }}-${{ hashFiles('renv.lock') }}
@@ -610,7 +610,7 @@ whenever possible:
 ## Rust - Cargo
 
 ```yaml
-- uses: actions/cache@v5
+- uses: actions/cache@v6
   with:
     path: |
       ~/.cargo/bin/
@@ -625,7 +625,7 @@ whenever possible:
 
 ```yaml
 - name: Cache SBT
-  uses: actions/cache@v5
+  uses: actions/cache@v6
   with:
     path: |
       ~/.ivy2/cache
@@ -636,7 +636,7 @@ whenever possible:
 ## Swift, Objective-C - Carthage
 
 ```yaml
-- uses: actions/cache@v5
+- uses: actions/cache@v6
   with:
     path: Carthage
     key: ${{ runner.os }}-carthage-${{ hashFiles('**/Cartfile.resolved') }}
@@ -647,7 +647,7 @@ whenever possible:
 ## Swift, Objective-C - CocoaPods
 
 ```yaml
-- uses: actions/cache@v5
+- uses: actions/cache@v6
   with:
     path: Pods
     key: ${{ runner.os }}-pods-${{ hashFiles('**/Podfile.lock') }}
@@ -658,7 +658,7 @@ whenever possible:
 ## Swift - Swift Package Manager
 
 ```yaml
-- uses: actions/cache@v5
+- uses: actions/cache@v6
   with:
     path: .build
     key: ${{ runner.os }}-spm-${{ hashFiles('**/Package.resolved') }}
@@ -673,7 +673,7 @@ env:
   MINT_PATH: .mint/lib
   MINT_LINK_PATH: .mint/bin
 steps:
-  - uses: actions/cache@v5
+  - uses: actions/cache@v6
     with:
       path: .mint
       key: ${{ runner.os }}-mint-${{ hashFiles('**/Mintfile') }}
@@ -689,7 +689,7 @@ steps:
 
 ```yaml
 - name: Cache Bazel
-  uses: actions/cache@v5
+  uses: actions/cache@v6
   with:
     path: |
       ~/.cache/bazel
@@ -703,7 +703,7 @@ steps:
 
 ```yaml
 - name: Cache Bazel
-  uses: actions/cache@v5
+  uses: actions/cache@v6
   with:
     path: |
       /private/var/tmp/_bazel_runner/

jest.config.js

@@ -1,23 +0,0 @@
-require("nock").disableNetConnect();
-
-module.exports = {
-    clearMocks: true,
-    moduleFileExtensions: ["js", "ts"],
-    testEnvironment: "node",
-    testMatch: ["**/*.test.ts"],
-    testRunner: "jest-circus/runner",
-    transform: {
-        "^.+\\.ts$": "ts-jest"
-    },
-    verbose: true
-};
-
-const processStdoutWrite = process.stdout.write.bind(process.stdout);
-// eslint-disable-next-line @typescript-eslint/explicit-function-return-type
-process.stdout.write = (str, encoding, cb) => {
-    // Core library will directly call process.stdout.write for commands
-    // We don't want :: commands to be executed by the runner during tests
-    if (!String(str).match(/^::/)) {
-        return processStdoutWrite(str, encoding, cb);
-    }
-};

jest.config.ts

@@ -0,0 +1,21 @@
+export default {
+  clearMocks: true,
+  moduleFileExtensions: ['js', 'ts'],
+  roots: ['<rootDir>/__tests__'],
+  testEnvironment: 'node',
+  testMatch: ['**/*.test.ts'],
+  transform: {
+    '^.+\\.ts$': [
+      'ts-jest',
+      {
+        useESM: true,
+        diagnostics: {
+          ignoreCodes: [151002]
+        }
+      }
+    ]
+  },
+  extensionsToTreatAsEsm: ['.ts'],
+  transformIgnorePatterns: ['node_modules/(?!(@actions)/)'],
+  verbose: true
+}

package.json

@@ -1,12 +1,13 @@
 {
   "name": "cache",
-  "version": "5.0.3",
+  "version": "6.0.0",
   "private": true,
   "description": "Cache dependencies and build outputs",
+  "type": "module",
   "main": "dist/restore/index.js",
   "scripts": {
     "build": "tsc && ncc build -o dist/restore src/restore.ts && ncc build -o dist/save src/save.ts && ncc build -o dist/restore-only src/restoreOnly.ts && ncc build -o dist/save-only src/saveOnly.ts",
-    "test": "tsc --noEmit && jest --coverage",
+    "test": "node --experimental-vm-modules node_modules/jest/bin/jest.js --coverage",
     "lint": "eslint **/*.ts --cache",
     "format": "prettier --write **/*.ts",
     "format-check": "prettier --check **/*.ts"
@@ -23,13 +24,13 @@
   "author": "GitHub",
   "license": "MIT",
   "dependencies": {
-    "@actions/cache": "^5.0.5",
-    "@actions/core": "^2.0.3",
-    "@actions/exec": "^2.0.0",
-    "@actions/io": "^2.0.0"
+    "@actions/cache": "^6.0.1",
+    "@actions/core": "^3.0.1",
+    "@actions/exec": "^3.0.0",
+    "@actions/io": "^3.0.2"
   },
   "devDependencies": {
-    "@types/jest": "^29.5.14",
+    "@types/jest": "^30.0.0",
     "@types/nock": "^11.1.0",
     "@types/node": "^24.1.0",
     "@typescript-eslint/eslint-plugin": "^7.2.0",
@@ -41,11 +42,11 @@
     "eslint-plugin-jest": "^27.9.0",
     "eslint-plugin-prettier": "^5.5.3",
     "eslint-plugin-simple-import-sort": "^12.1.1",
-    "jest": "^29.7.0",
-    "jest-circus": "^29.7.0",
+    "jest": "^30.2.0",
     "nock": "^13.2.9",
     "prettier": "^3.6.2",
     "ts-jest": "^29.4.0",
+    "ts-node": "^10.9.2",
     "typescript": "^5.8.3"
   },
   "engines": {

tips-and-workarounds.md

@@ -12,7 +12,7 @@ A cache today is immutable and cannot be updated. But some use cases require the
 
   ```yaml
       - name: update cache on every commit
-        uses: actions/cache@v5
+        uses: actions/cache@v6
         with:
           path: prime-numbers
           key: primes-${{ runner.os }}-${{ github.run_id }} # Can use time based key as well

tsconfig.json

@@ -1,63 +1,13 @@
 {
   "compilerOptions": {
-    /* Basic Options */
-    // "incremental": true,                   /* Enable incremental compilation */
-    "target": "es6",                          /* Specify ECMAScript target version: 'ES3' (default), 'ES5', 'ES2015', 'ES2016', 'ES2017', 'ES2018', 'ES2019' or 'ESNEXT'. */
-    "module": "commonjs",                     /* Specify module code generation: 'none', 'commonjs', 'amd', 'system', 'umd', 'es2015', or 'ESNext'. */
-    // "allowJs": true,                       /* Allow javascript files to be compiled. */
-    // "checkJs": true,                       /* Report errors in .js files. */
-    // "jsx": "preserve",                     /* Specify JSX code generation: 'preserve', 'react-native', or 'react'. */
-    // "declaration": true,                   /* Generates corresponding '.d.ts' file. */
-    // "declarationMap": true,                /* Generates a sourcemap for each corresponding '.d.ts' file. */
-    // "sourceMap": true,                     /* Generates corresponding '.map' file. */
-    // "outFile": "./",                       /* Concatenate and emit output to single file. */
-    "outDir": "./lib",                        /* Redirect output structure to the directory. */
-    "rootDir": "./src",                       /* Specify the root directory of input files. Use to control the output directory structure with --outDir. */
-    // "composite": true,                     /* Enable project compilation */
-    // "tsBuildInfoFile": "./",               /* Specify file to store incremental compilation information */
-    // "removeComments": true,                /* Do not emit comments to output. */
-    // "noEmit": true,                        /* Do not emit outputs. */
-    // "importHelpers": true,                 /* Import emit helpers from 'tslib'. */
-    // "downlevelIteration": true,            /* Provide full support for iterables in 'for-of', spread, and destructuring when targeting 'ES5' or 'ES3'. */
-    // "isolatedModules": true,               /* Transpile each file as a separate module (similar to 'ts.transpileModule'). */
-
-    /* Strict Type-Checking Options */
-    "strict": true,                           /* Enable all strict type-checking options. */
-    "noImplicitAny": false,                 /* Raise error on expressions and declarations with an implied 'any' type. */
-    // "strictNullChecks": true,              /* Enable strict null checks. */
-    // "strictFunctionTypes": true,           /* Enable strict checking of function types. */
-    // "strictBindCallApply": true,           /* Enable strict 'bind', 'call', and 'apply' methods on functions. */
-    // "strictPropertyInitialization": true,  /* Enable strict checking of property initialization in classes. */
-    // "noImplicitThis": true,                /* Raise error on 'this' expressions with an implied 'any' type. */
-    // "alwaysStrict": true,                  /* Parse in strict mode and emit "use strict" for each source file. */
-
-    /* Additional Checks */
-    // "noUnusedLocals": true,                /* Report errors on unused locals. */
-    // "noUnusedParameters": true,            /* Report errors on unused parameters. */
-    // "noImplicitReturns": true,             /* Report error when not all code paths in function return a value. */
-    // "noFallthroughCasesInSwitch": true,    /* Report errors for fallthrough cases in switch statement. */
-
-    /* Module Resolution Options */
-    // "moduleResolution": "node",            /* Specify module resolution strategy: 'node' (Node.js) or 'classic' (TypeScript pre-1.6). */
-    // "baseUrl": "./",                       /* Base directory to resolve non-absolute module names. */
-    // "paths": {},                           /* A series of entries which re-map imports to lookup locations relative to the 'baseUrl'. */
-    // "rootDirs": [],                        /* List of root folders whose combined content represents the structure of the project at runtime. */
-    // "typeRoots": [],                       /* List of folders to include type definitions from. */
-    // "types": [],                           /* Type declaration files to be included in compilation. */
-    // "allowSyntheticDefaultImports": true,  /* Allow default imports from modules with no default export. This does not affect code emit, just typechecking. */
-    "esModuleInterop": true                   /* Enables emit interoperability between CommonJS and ES Modules via creation of namespace objects for all imports. Implies 'allowSyntheticDefaultImports'. */
-    // "preserveSymlinks": true,              /* Do not resolve the real path of symlinks. */
-    // "allowUmdGlobalAccess": true,          /* Allow accessing UMD globals from modules. */
-
-    /* Source Map Options */
-    // "sourceRoot": "",                      /* Specify the location where debugger should locate TypeScript files instead of source locations. */
-    // "mapRoot": "",                         /* Specify the location where debugger should locate map files instead of generated locations. */
-    // "inlineSourceMap": true,               /* Emit a single file with source maps instead of having a separate file. */
-    // "inlineSources": true,                 /* Emit the source alongside the sourcemaps within a single file; requires '--inlineSourceMap' or '--sourceMap' to be set. */
-
-    /* Experimental Options */
-    // "experimentalDecorators": true,        /* Enables experimental support for ES7 decorators. */
-    // "emitDecoratorMetadata": true,         /* Enables experimental support for emitting type metadata for decorators. */
+    "target": "ES2022",
+    "module": "ESNext",
+    "outDir": "./lib",
+    "rootDir": "./src",
+    "strict": true,
+    "noImplicitAny": false,
+    "moduleResolution": "bundler",
+    "esModuleInterop": true
   },
-  "exclude": ["node_modules", "**/*.test.ts"]
+  "exclude": ["node_modules", "**/*.test.ts", "jest.config.ts", "__tests__"]
 }