Fix change dection for checkHeaders script

dev-packages/cli/src/commands/check-header.ts

@@ -112,13 +112,15 @@ async function getFiles(rootDir: string, options: HeaderCheckOptions): Promise<s
         return resolveFiles(result);
     }
 
-    let changedFiles = options.type === 'changes' ? getChangesComparedToDefaultBranch(rootDir) : getChangesOfLastCommit(rootDir);
-    changedFiles = changedFiles.filter(minimatch.filter(includePattern));
+    const changedFiles = options.type === 'changes' ? getChangesComparedToDefaultBranch(rootDir) : getChangesOfLastCommit(rootDir);
+    // The change-detection helpers return absolute paths, but the include/exclude globs are
+    // repo-relative -> convert
+    let relativeFiles = changedFiles.map(file => path.relative(rootDir, file)).filter(minimatch.filter(includePattern));
 
     excludePattern.forEach(pattern => {
-        changedFiles = changedFiles.filter(minimatch.filter(`!${pattern}`));
+        relativeFiles = relativeFiles.filter(minimatch.filter(`!${pattern}`));
     });
-    const result = changedFiles.filter(file => fs.existsSync(file));
+    const result = relativeFiles.filter(file => fs.existsSync(path.resolve(rootDir, file)));
     return resolveFiles(result);
 }
 

dev-packages/cli/tests/e2e/check-header.e2e.spec.ts

@@ -14,13 +14,13 @@
  * SPDX-License-Identifier: EPL-2.0 OR GPL-2.0 WITH Classpath-exception-2.0
  ********************************************************************************/
 
-import { describe, it, beforeEach, afterEach, expect } from 'vitest';
 import { execSync } from 'child_process';
 import * as fs from 'fs';
 import * as path from 'path';
+import { afterEach, beforeEach, describe, expect, it } from 'vitest';
 import { runCli } from '../helpers/cli-helper';
-import { commitFile, createTempGitRepo } from '../helpers/git-helper';
-import { cleanupTempDir } from '../helpers/test-helper';
+import { commitFile, createTempGitRepo, initGitRepo } from '../helpers/git-helper';
+import { cleanupTempDir, createTempDir } from '../helpers/test-helper';
 
 const VALID_HEADER = `/********************************************************************************
  * Copyright (c) ${new Date().getFullYear()} EclipseSource and others.
@@ -108,6 +108,37 @@ describe('checkHeaders e2e', () => {
         expect(result.stdout).to.contain('Check copy right headers of 1 files');
     });
 
+    describe('with a repository under a dot-directory', () => {
+        let hiddenRepoDir: string;
+        let hiddenRoot: string;
+
+        beforeEach(() => {
+            hiddenRoot = createTempDir();
+            hiddenRepoDir = initGitRepo(path.join(hiddenRoot, '.hidden', 'repo'));
+        });
+
+        afterEach(() => {
+            cleanupTempDir(hiddenRoot);
+        });
+
+        it('should still detect changed files with --type changes', () => {
+            commitFile(hiddenRepoDir, 'src/base.ts', VALID_HEADER + '\nconst x = 1;\n', 'add base file');
+            execSync('git checkout -b feature', { cwd: hiddenRepoDir });
+            commitFile(hiddenRepoDir, 'src/feature.ts', 'const y = 2;\n', 'add feature file');
+            const result = runCli(['checkHeaders', hiddenRepoDir, '--type', 'changes']);
+            expect(result.stdout).to.contain('Check copy right headers of 1 files');
+            expect(result.stdout).to.contain('feature.ts');
+            expect(result.stdout).to.not.contain('base.ts');
+        });
+
+        it('should still detect changed files with --type lastCommit', () => {
+            commitFile(hiddenRepoDir, 'src/old.ts', VALID_HEADER + '\nconst x = 1;\n', 'add old file');
+            commitFile(hiddenRepoDir, 'src/new.ts', 'const y = 2;\n', 'add new file');
+            const result = runCli(['checkHeaders', hiddenRepoDir, '--type', 'lastCommit']);
+            expect(result.stdout).to.contain('Check copy right headers of 1 files');
+        });
+    });
+
     it('should check custom file extensions with --fileExtensions', () => {
         commitFile(repoDir, 'src/script.js', 'const x = 1;\n', 'add js file');
         commitFile(repoDir, 'src/good.ts', VALID_HEADER + '\nconst y = 2;\n', 'add ts file');

dev-packages/cli/tests/helpers/git-helper.ts

@@ -25,7 +25,12 @@ function git(args: string, cwd: string): string {
 
 /** Creates a temporary git repository with an initial commit. */
 export function createTempGitRepo(): string {
-    const dir = createTempDir();
+    return initGitRepo(createTempDir());
+}
+
+/** Initializes a git repository with an initial commit at the given directory (created if missing). */
+export function initGitRepo(dir: string): string {
+    fs.mkdirSync(dir, { recursive: true });
     git('init', dir);
     git('config user.email "test@test.com"', dir);
     git('config user.name "Test"', dir);