248369: Adding tests to verify path transformation logic works correctly

Author: Parasaran-Python

extensions/git/src/test/repository.test.ts

@@ -0,0 +1,61 @@
+/*---------------------------------------------------------------------------------------------
+ *  Copyright (c) Microsoft Corporation. All rights reserved.
+ *  Licensed under the MIT License. See License.txt in the project root for license information.
+ *--------------------------------------------------------------------------------------------*/
+
+import 'mocha';
+import assert from 'assert';
+import path from 'path';
+import { isWindows } from '../util';
+
+suite('Repository path handling', () => {
+	// Skip all tests if not on Windows, as these tests are for Windows-specific path handling
+	suiteSetup(function () {
+		if (!isWindows) {
+			this.skip();
+		}
+	});
+
+	// Test the path manipulation logic directly for subst drives
+	test('subst drive path correction', () => {
+		const root = 'X:\\repo';
+		const rootRealPath = 'C:\\real\\path\\repo';
+		const fsPath = 'X:\\repo\\file.txt';
+
+		// This is the logic from the fix we implemented
+		const realPath = fsPath.startsWith(root)
+			? path.join(rootRealPath, fsPath.substring(root.length))
+			: fsPath;
+
+		// Verify the path is correctly transformed
+		assert.strictEqual(realPath, 'C:\\real\\path\\repo\\file.txt');
+	});
+
+	test('non-subst path should remain unchanged', () => {
+		const root = 'C:\\repo';
+		const rootRealPath = 'C:\\repo';
+		const fsPath = 'C:\\repo\\file.txt';
+
+		// Same logic as implemented in the fix
+		const realPath = fsPath.startsWith(root)
+			? path.join(rootRealPath, fsPath.substring(root.length))
+			: fsPath;
+
+		// Path should remain unchanged
+		assert.strictEqual(realPath, 'C:\\repo\\file.txt');
+	});
+
+	test('path outside repository should remain unchanged', () => {
+		const root = 'X:\\repo';
+		const rootRealPath = 'C:\\real\\path\\repo';
+		const fsPath = 'D:\\other\\file.txt';
+
+		// Same logic as implemented in the fix
+		const realPath = fsPath.startsWith(root)
+			? path.join(rootRealPath, fsPath.substring(root.length))
+			: fsPath;
+
+		// Path should remain unchanged
+		assert.strictEqual(realPath, 'D:\\other\\file.txt');
+	});
+});