Merge 14150cf66c into 900f2210b1

* fix: expand merge commit SHA regex and add SHA-256 test cases

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

* test: add checkCommitInfo SHA coverage

Add checkCommitInfo tests for SHA-1 and SHA-256 merge messages and reject invalid 50-character hex merge heads.\n\nCo-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

* style: fix Prettier formatting in test and source files

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

---------

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

.github/copilot-instructions.md

@@ -0,0 +1,121 @@
+# GitHub Actions Checkout - AI Coding Instructions
+
+## Project Overview
+
+This is the official `actions/checkout` GitHub Action for checking out repositories in workflows. It's a TypeScript project that compiles to a single bundled JavaScript file (`dist/index.js`) and supports both git-based and REST API-based repository downloads.
+
+## Architecture & Key Components
+
+### Core Entry Points
+- **`src/main.ts`**: Main entry point with `run()` and `cleanup()` functions, determined by `stateHelper.IsPost`
+- **`src/git-source-provider.ts`**: Primary orchestrator for repository acquisition (git vs REST API fallback)
+- **`src/input-helper.ts`**: Input validation and GitHub Actions input processing
+- **`action.yml`**: Defines the action interface with comprehensive input/output schema
+
+### Critical Data Flow
+1. `main.ts` → `inputHelper.getInputs()` → validates and transforms action inputs
+2. `main.ts` → `gitSourceProvider.getSource(settings)` → orchestrates repository download
+3. `git-source-provider.ts` decides: use Git CLI or fallback to GitHub REST API
+4. State management via `state-helper.ts` for POST action cleanup
+
+### Authentication & Security Patterns
+- **Token-based auth**: Uses `@actions/core` to handle GitHub tokens securely
+- **SSH key management**: Configures temporary SSH keys in `git-auth-helper.ts`
+- **Safe directory**: Automatically configures `git config safe.directory` for container compatibility
+
+## Development Workflow
+
+### Essential Commands
+```bash
+npm ci                    # Install dependencies
+npm run build            # TypeScript → JavaScript + bundle with ncc + generate docs
+npm run format           # Prettier formatting
+npm run lint            # ESLint validation
+npm test                # Jest test suite
+```
+
+### Build Process (Critical!)
+- **`npm run build`** runs: `tsc && ncc build && node lib/misc/generate-docs.js`
+- **Documentation sync**: `src/misc/generate-docs.ts` auto-updates README.md usage section from `action.yml`
+- **Bundling**: Uses `@vercel/ncc` to create single `dist/index.js` file
+- **Always run `npm run build` before commits** - the `dist/` directory must be up-to-date
+
+### Testing Strategy
+- **Unit tests**: Jest tests in `__test__/` for all core modules
+- **Integration tests**: Shell scripts (`__test__/verify-*.sh`) test real git operations
+- **E2E tests**: `.github/workflows/test.yml` tests across OS matrix with actual GitHub repos
+
+## Project-Specific Conventions
+
+### TypeScript Patterns
+- **Interface-driven**: `IGitSourceSettings` centralizes all configuration
+- **Async/await**: All I/O operations use async patterns, not promises
+- **Error handling**: Use `core.setFailed()` for action failures, `core.warning()` for non-critical issues
+
+### Git Operation Patterns
+```typescript
+// Check Git version and fallback pattern
+const git = await getGitCommandManager(settings)
+if (git) {
+  // Use Git CLI
+  await git.fetch(refSpec, fetchDepth)
+} else {
+  // Fallback to REST API
+  await githubApiHelper.downloadRepository(...)
+}
+```
+
+### State Management (Unique Pattern!)
+- **Dual-phase execution**: Same script runs twice (MAIN + POST) determined by `stateHelper.IsPost`
+- **State persistence**: Use `core.saveState()` / `core.getState()` to pass data between phases
+- **Cleanup responsibility**: POST phase cleans up auth tokens, SSH keys, etc.
+
+### Input Validation Approach
+- **GitHub context integration**: Defaults repository from `github.context.repo`
+- **Path safety**: Validates paths are within `GITHUB_WORKSPACE`
+- **Flexible refs**: Handles branches, tags, SHAs, and PR refs uniformly
+
+## Integration Points
+
+### GitHub Actions SDK Usage
+- **`@actions/core`**: Input/output, logging, state management
+- **`@actions/github`**: GitHub context and API access
+- **`@actions/exec`**: Git command execution
+- **`@actions/io`**: File system operations
+
+### Git Integration
+- **Version compatibility**: Minimum Git 2.18, with feature detection for sparse-checkout
+- **Authentication modes**: Token-based (default) or SSH key-based
+- **Advanced features**: LFS, submodules, sparse-checkout, partial clones
+
+### Container Support
+- **Safe directory**: Critical for container workflows - auto-configures git safe.directory
+- **Credential persistence**: Configures git credential helper for authenticated operations
+
+## Common Debugging Patterns
+
+### Enable Debug Logging
+```yaml
+steps:
+  - uses: actions/checkout@v5
+    env:
+      ACTIONS_STEP_DEBUG: true
+```
+
+### REST API Fallback Testing
+```bash
+# Force REST API mode by overriding Git version
+__test__/override-git-version.sh
+```
+
+### Authentication Issues
+- Check `GITHUB_TOKEN` permissions: needs `contents: read`
+- For private repos: requires PAT with repo access
+- Container issues: verify safe.directory configuration
+
+## Key Files for Understanding
+- `src/git-source-provider.ts` - Main orchestration logic
+- `src/input-helper.ts` - Action interface and validation
+- `src/git-auth-helper.ts` - Authentication and credential management
+- `action.yml` - Complete input/output specification
+- `.github/workflows/test.yml` - Comprehensive test scenarios

.github/workflows/deno.yml

@@ -0,0 +1,41 @@
+# This workflow uses actions that are not certified by GitHub.
+# They are provided by a third-party and are governed by
+# separate terms of service, privacy policy, and support
+# documentation.
+
+# This workflow will install Deno then run `deno lint` and `deno test`.
+# For more information see: https://github.com/denoland/setup-deno
+
+name: Deno
+
+on:
+  push:
+    branches: ["main"]
+  pull_request:
+    branches: ["main"]
+
+permissions:
+  contents: read
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Setup repo
+        uses: actions/checkout@v4
+
+      - name: Setup Deno
+        uses: denoland/setup-deno@v1.1.2
+        with:
+          deno-version: v1.x
+
+      # Uncomment this step to verify the use of 'deno fmt' on each commit.
+      # - name: Verify formatting
+      #   run: deno fmt --check
+
+      - name: Run linter
+        run: deno lint
+
+      - name: Run tests
+        run: deno test -A

LICENSE

@@ -1,22 +1,201 @@
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__test__/input-helper.test.ts

@@ -133,6 +133,16 @@ describe('input-helper tests', () => {
     expect(settings.commit).toBe('1111111111222222222233333333334444444444')
   })
 
+  it('sets ref to empty when explicit sha-256', async () => {
+    inputs.ref =
+      '1111111111222222222233333333334444444444555555555566666666667777'
+    const settings: IGitSourceSettings = await inputHelper.getInputs()
+    expect(settings.ref).toBeFalsy()
+    expect(settings.commit).toBe(
+      '1111111111222222222233333333334444444444555555555566666666667777'
+    )
+  })
+
   it('sets sha to empty when explicit ref', async () => {
     inputs.ref = 'refs/heads/some-other-ref'
     const settings: IGitSourceSettings = await inputHelper.getInputs()

__test__/ref-helper.test.ts

@@ -1,8 +1,12 @@
 import * as assert from 'assert'
+import * as core from '@actions/core'
+import * as github from '@actions/github'
 import * as refHelper from '../lib/ref-helper'
 import {IGitCommandManager} from '../lib/git-command-manager'
 
 const commit = '1234567890123456789012345678901234567890'
+const sha256Commit =
+  '1234567890123456789012345678901234567890123456789012345678901234'
 let git: IGitCommandManager
 
 describe('ref-helper tests', () => {
@@ -37,6 +41,12 @@ describe('ref-helper tests', () => {
     expect(checkoutInfo.startPoint).toBeFalsy()
   })
 
+  it('getCheckoutInfo sha-256 only', async () => {
+    const checkoutInfo = await refHelper.getCheckoutInfo(git, '', sha256Commit)
+    expect(checkoutInfo.ref).toBe(sha256Commit)
+    expect(checkoutInfo.startPoint).toBeFalsy()
+  })
+
   it('getCheckoutInfo refs/heads/', async () => {
     const checkoutInfo = await refHelper.getCheckoutInfo(
       git,
@@ -227,4 +237,142 @@ describe('ref-helper tests', () => {
       '+refs/heads/my/branch:refs/remotes/origin/my/branch'
     )
   })
+
+  describe('checkCommitInfo', () => {
+    const repositoryOwner = 'some-owner'
+    const repositoryName = 'some-repo'
+    const ref = 'refs/pull/123/merge'
+    const sha1Head = '1111111111222222222233333333334444444444'
+    const sha1Base = 'aaaaaaaaaabbbbbbbbbbccccccccccdddddddddd'
+    const sha256Head =
+      '1111111111222222222233333333334444444444555555555566666666667777'
+    const sha256Base =
+      'aaaaaaaaaabbbbbbbbbbccccccccccddddddddddeeeeeeeeeeffffffffff0000'
+    let debugSpy: jest.SpyInstance
+    let getOctokitSpy: jest.SpyInstance
+    let repoGetSpy: jest.Mock
+    let originalEventName: string
+    let originalPayload: unknown
+    let originalRef: string
+    let originalSha: string
+
+    function setPullRequestContext(
+      expectedHeadSha: string,
+      expectedBaseSha: string,
+      mergeCommit: string
+    ): void {
+      ;(github.context as any).eventName = 'pull_request'
+      github.context.ref = ref
+      github.context.sha = mergeCommit
+      ;(github.context as any).payload = {
+        action: 'synchronize',
+        after: expectedHeadSha,
+        number: 123,
+        pull_request: {
+          base: {
+            sha: expectedBaseSha
+          }
+        },
+        repository: {
+          private: false
+        }
+      }
+    }
+
+    beforeEach(() => {
+      originalEventName = github.context.eventName
+      originalPayload = github.context.payload
+      originalRef = github.context.ref
+      originalSha = github.context.sha
+
+      jest.spyOn(github.context, 'repo', 'get').mockReturnValue({
+        owner: repositoryOwner,
+        repo: repositoryName
+      })
+      debugSpy = jest.spyOn(core, 'debug').mockImplementation(jest.fn())
+      repoGetSpy = jest.fn(async () => ({}))
+      getOctokitSpy = jest.spyOn(github, 'getOctokit').mockReturnValue({
+        rest: {
+          repos: {
+            get: repoGetSpy
+          }
+        }
+      } as any)
+    })
+
+    afterEach(() => {
+      ;(github.context as any).eventName = originalEventName
+      ;(github.context as any).payload = originalPayload
+      github.context.ref = originalRef
+      github.context.sha = originalSha
+      jest.restoreAllMocks()
+    })
+
+    it('returns early for SHA-1 merge commit', async () => {
+      setPullRequestContext(sha1Head, sha1Base, commit)
+
+      await refHelper.checkCommitInfo(
+        'token',
+        `Merge ${sha1Head} into ${sha1Base}`,
+        repositoryOwner,
+        repositoryName,
+        ref,
+        commit
+      )
+
+      expect(getOctokitSpy).not.toHaveBeenCalled()
+      expect(repoGetSpy).not.toHaveBeenCalled()
+    })
+
+    it('matches SHA-256 merge commit info', async () => {
+      const actualHeadSha =
+        '9999999999888888888877777777776666666666555555555544444444443333'
+      setPullRequestContext(sha256Head, sha256Base, sha256Commit)
+
+      await refHelper.checkCommitInfo(
+        'token',
+        `Merge ${actualHeadSha} into ${sha256Base}`,
+        repositoryOwner,
+        repositoryName,
+        ref,
+        sha256Commit
+      )
+
+      expect(getOctokitSpy).toHaveBeenCalledWith(
+        'token',
+        expect.objectContaining({
+          userAgent: expect.stringContaining(
+            `expected_head_sha=${sha256Head};actual_head_sha=${actualHeadSha}`
+          )
+        })
+      )
+      expect(repoGetSpy).toHaveBeenCalledWith({
+        owner: repositoryOwner,
+        repo: repositoryName
+      })
+      expect(debugSpy).toHaveBeenCalledWith(
+        `Expected head sha ${sha256Head}; actual head sha ${actualHeadSha}`
+      )
+      expect(debugSpy).not.toHaveBeenCalledWith('Unexpected message format')
+    })
+
+    it('does not match 50-char hex as a valid merge', async () => {
+      const invalidHeadSha =
+        '99999999998888888888777777777766666666665555555555'
+      setPullRequestContext(sha1Head, sha1Base, commit)
+
+      await refHelper.checkCommitInfo(
+        'token',
+        `Merge ${invalidHeadSha} into ${sha1Base}`,
+        repositoryOwner,
+        repositoryName,
+        ref,
+        commit
+      )
+
+      expect(getOctokitSpy).not.toHaveBeenCalled()
+      expect(repoGetSpy).not.toHaveBeenCalled()
+      expect(debugSpy).toHaveBeenCalledWith('Unexpected message format')
+    })
+  })
 })

dist/index.js

@@ -2021,7 +2021,7 @@ function getInputs() {
             }
         }
         // SHA?
-        else if (result.ref.match(/^[0-9a-fA-F]{40}$/)) {
+        else if (result.ref.match(/^(?:[0-9a-fA-F]{40}|[0-9a-fA-F]{64})$/)) {
             result.commit = result.ref;
             result.ref = '';
         }
@@ -2444,7 +2444,7 @@ function checkCommitInfo(token, commitInfo, repositoryOwner, repositoryName, ref
                 return;
             }
             // Extract details from message
-            const match = commitInfo.match(/Merge ([0-9a-f]{40}) into ([0-9a-f]{40})/);
+            const match = commitInfo.match(/Merge ([0-9a-f]{40}|[0-9a-f]{64}) into ([0-9a-f]{40}|[0-9a-f]{64})/);
             if (!match) {
                 core.debug('Unexpected message format');
                 return;

src/input-helper.ts

@@ -71,7 +71,7 @@ export async function getInputs(): Promise<IGitSourceSettings> {
     }
   }
   // SHA?
-  else if (result.ref.match(/^[0-9a-fA-F]{40}$/)) {
+  else if (result.ref.match(/^(?:[0-9a-fA-F]{40}|[0-9a-fA-F]{64})$/)) {
     result.commit = result.ref
     result.ref = ''
   }

src/ref-helper.ts

@@ -258,7 +258,9 @@ export async function checkCommitInfo(
     }
 
     // Extract details from message
-    const match = commitInfo.match(/Merge ([0-9a-f]{40}) into ([0-9a-f]{40})/)
+    const match = commitInfo.match(
+      /Merge ([0-9a-f]{40}|[0-9a-f]{64}) into ([0-9a-f]{40}|[0-9a-f]{64})/
+    )
     if (!match) {
       core.debug('Unexpected message format')
       return