Add Ref and Commit outputs

Signed-off-by: Luca Comellini <luca.com@gmail.com>

.github/workflows/test.yml

@@ -295,3 +295,32 @@ jobs:
         uses: actions/checkout@v3
         with:
           path: v3
+
+  test-output:
+    runs-on: ubuntu-latest
+    steps:
+      # Clone this repo
+      - name: Checkout
+        uses: actions/checkout@v3
+
+      # Basic checkout using git
+      - name: Checkout basic
+        id: checkout
+        uses: ./
+        with:
+          ref: test-data/v2/basic
+
+      # Verify output
+      - name: Verify output
+        run: |
+          echo "Commit: ${{ steps.checkout.outputs.commit }}"
+          echo "Ref: ${{ steps.checkout.outputs.ref }}"
+
+          if [ "${{ steps.checkout.outputs.ref }}" != "test-data/v2/basic" ]; then
+            echo "Expected ref to be test-data/v2/basic"
+            exit 1
+          fi
+
+      # needed to make checkout post cleanup succeed
+      - name: Fix Checkout
+        uses: actions/checkout@v3

__test__/git-auth-helper.test.ts

@@ -169,9 +169,8 @@ describe('git-auth-helper tests', () => {
 
     // Mock fs.promises.readFile
     const realReadFile = fs.promises.readFile
-    jest
-      .spyOn(fs.promises, 'readFile')
-      .mockImplementation(async (file: any, options: any): Promise<Buffer> => {
+    jest.spyOn(fs.promises, 'readFile').mockImplementation(
+      async (file: any, options: any): Promise<Buffer> => {
         const userKnownHostsPath = path.join(
           os.homedir(),
           '.ssh',
@@ -182,7 +181,8 @@ describe('git-auth-helper tests', () => {
         }
 
         return await realReadFile(file, options)
-      })
+      }
+    )
 
     // Act
     const authHelper = gitAuthHelper.createAuthHelper(git, settings)

__test__/ref-helper.test.ts

@@ -7,11 +7,11 @@ let git: IGitCommandManager
 
 describe('ref-helper tests', () => {
   beforeEach(() => {
-    git = {} as unknown as IGitCommandManager
+    git = ({} as unknown) as IGitCommandManager
   })
 
   it('getCheckoutInfo requires git', async () => {
-    const git = null as unknown as IGitCommandManager
+    const git = (null as unknown) as IGitCommandManager
     try {
       await refHelper.getCheckoutInfo(git, 'refs/heads/my/branch', commit)
       throw new Error('Should not reach here')

__test__/retry-helper.test.ts

@@ -68,7 +68,7 @@ describe('retry-helper tests', () => {
 
   it('all attempts fail succeeds', async () => {
     let attempts = 0
-    let error: Error = null as unknown as Error
+    let error: Error = (null as unknown) as Error
     try {
       await retryHelper.execute(() => {
         throw new Error(`some error ${++attempts}`)

action.yml

@@ -98,6 +98,11 @@ inputs:
   github-server-url:
     description: The base URL for the GitHub instance that you are trying to clone from, will use environment defaults to fetch from the same instance that the workflow is running from unless specified. Example URLs are https://github.com or https://my-ghes-server.example.com
     required: false
+outputs:
+  ref:
+    description: 'The branch, tag or SHA that was checked out'
+  commit:
+    description: 'The commit SHA that was checked out'
 runs:
   using: node20
   main: dist/index.js