Update again...

.github/workflows/test.yml

@@ -9,7 +9,7 @@ on:
 
 jobs:
  build:
-    runs-on: ubuntu-latest
+    runs-on: windows-latest
     steps:
      - uses: actions/checkout@v4
        with:

__tests__/main.test.js

@@ -0,0 +1,70 @@
+// main.test.js
+
+const fs = require('fs');
+const childProcess = require('child_process');
+const { testFunction } = require('../src/main');
+
+jest.mock('@actions/core', () => ({
+  getInput: jest.fn(),
+  setFailed: jest.fn(),
+}));
+
+jest.mock('fs', () => ({
+  existsSync: jest.fn(),
+  readdirSync: jest.fn(),
+}));
+
+jest.mock('child_process', () => ({
+  exec: jest.fn(),
+}));
+
+describe('Test suite for index.js', () => {
+  beforeEach(() => {
+    // Clear mock calls before each test
+    jest.clearAllMocks();
+  });
+
+  test('Handles Windows platform with existing repository', () => {
+    process.platform = 'win32';
+    fs.existsSync.mockReturnValue(true);
+    fs.readdirSync.mockReturnValue(['file1', 'file2']);
+    childProcess.exec.mockImplementation((command, options, callback) => {
+      // Simulate successful execution
+      callback(null, 'stdout content', 'stderr content');
+    });
+
+    // Call the function you want to test
+    testFunction();
+
+    // Assertions
+    expect(fs.existsSync).toHaveBeenCalledWith(process.env.GITHUB_WORKSPACE);
+    expect(fs.readdirSync).toHaveBeenCalledWith(process.env.GITHUB_WORKSPACE);
+    expect(childProcess.exec).toHaveBeenCalled();
+    expect(core.setFailed).not.toHaveBeenCalled();
+  });
+
+  test('Handles Windows platform with missing repository', () => {
+    process.platform = 'win32';
+    fs.existsSync.mockReturnValue(false);
+
+    // Call the function you want to test
+    testFunction();
+
+    // Assertions
+    expect(core.setFailed).toHaveBeenCalledWith(
+      'The repository was not cloned. Please specify the actions/checkout action before this step.'
+    );
+    expect(process.exit).toHaveBeenCalledWith(1);
+  });
+
+  test('Handles non-Windows platform', () => {
+    process.platform = 'linux';
+
+    // Call the function you want to test
+    testFunction();
+
+    // Assertions
+    expect(core.setFailed).toHaveBeenCalledWith('This action is only supported on Windows!');
+    expect(process.exit).toHaveBeenCalledWith(1);
+  });
+});