Rollforward AST changes to unblock Sandboxing (#863)

1 files changed, 0 insertions, 782 deletions

diff --git a/packages/core/src/tools/code_parser.test.ts b/packages/core/src/tools/code_parser.test.ts
deleted file mode 100644
index 358edc7d..00000000
--- a/packages/core/src/tools/code_parser.test.ts
+++ /dev/null
@@ -1,782 +0,0 @@
-/**
- * @license
- * Copyright 2025 Google LLC
- * SPDX-License-Identifier: Apache-2.0
- */
-
-import {
-  vi,
-  describe,
-  it,
-  expect,
-  beforeEach,
-  afterEach,
-  Mocked,
-} from 'vitest';
-import { CodeParserTool, CodeParserToolParams } from './code_parser.js';
-import { Config } from '../config/config.js';
-import fs from 'fs/promises';
-import { Stats, PathLike } from 'fs'; // Added Stats import
-import path from 'path';
-import os from 'os';
-import actualFs from 'fs'; // For actual fs operations in setup
-
-// Mock fs/promises
-vi.mock('fs/promises');
-
-// Mock tree-sitter and its language grammars
-const mockTreeSitterParse = vi.fn();
-const mockSetLanguage = vi.fn();
-
-vi.mock('tree-sitter', () => ({
-  default: vi.fn().mockImplementation(() => ({
-    setLanguage: mockSetLanguage,
-    parse: mockTreeSitterParse,
-  })),
-}));
-
-const mockPythonGrammar = vi.hoisted(() => ({ name: 'python' }));
-const mockJavaGrammar = vi.hoisted(() => ({ name: 'java' }));
-const mockGoGrammar = vi.hoisted(() => ({ name: 'go' }));
-const mockCSharpGrammar = vi.hoisted(() => ({ name: 'csharp' }));
-const mockTypeScriptGrammar = vi.hoisted(() => ({ name: 'typescript' }));
-const mockTSXGrammar = vi.hoisted(() => ({ name: 'tsx' }));
-const mockRustGrammar = vi.hoisted(() => ({ name: 'rust' })); // Added for Rust
-
-vi.mock('tree-sitter-python', () => ({ default: mockPythonGrammar }));
-vi.mock('tree-sitter-java', () => ({ default: mockJavaGrammar }));
-vi.mock('tree-sitter-go', () => ({ default: mockGoGrammar }));
-vi.mock('tree-sitter-c-sharp', () => ({ default: mockCSharpGrammar }));
-vi.mock('tree-sitter-typescript', () => ({
-  default: {
-    typescript: mockTypeScriptGrammar,
-    tsx: mockTSXGrammar,
-  },
-}));
-vi.mock('tree-sitter-rust', () => ({ default: mockRustGrammar })); // Added for Rust
-
-describe('CodeParserTool', () => {
-  let tempRootDir: string;
-  let tool: CodeParserTool;
-  let mockConfig: Config;
-  const abortSignal = new AbortController().signal;
-
-  // Use Mocked type for fs/promises
-  let mockFs: Mocked<typeof fs>;
-
-  beforeEach(() => {
-    const tempDirPrefix = path.join(os.tmpdir(), 'code-parser-tool-root-');
-    tempRootDir = actualFs.mkdtempSync(tempDirPrefix);
-    tempRootDir = path.resolve(tempRootDir);
-
-    mockConfig = { get: vi.fn() } as unknown as Config;
-    tool = new CodeParserTool(tempRootDir, mockConfig);
-    mockFs = fs as Mocked<typeof fs>;
-
-    mockTreeSitterParse.mockReset();
-    mockSetLanguage.mockReset();
-    mockFs.stat.mockReset();
-    mockFs.readFile.mockReset();
-    mockFs.readdir.mockReset();
-
-    mockTreeSitterParse.mockReturnValue({
-      rootNode: { toString: () => '(mock_ast)' },
-    });
-  });
-
-  afterEach(() => {
-    if (actualFs.existsSync(tempRootDir)) {
-      actualFs.rmSync(tempRootDir, { recursive: true, force: true });
-    }
-    vi.clearAllMocks();
-  });
-
-  describe('constructor and schema', () => {
-    it('should have correct name', () => {
-      expect(tool.name).toBe('code_parser');
-    });
-
-    it('should have correct schema definition', () => {
-      const schema = tool.schema.parameters!;
-      expect(schema.type).toBe('object');
-      expect(schema.properties).toHaveProperty('path');
-      expect(schema.properties!.path.type).toBe('string');
-      expect(schema.properties!.path.description).toContain('absolute path');
-      expect(schema.properties).toHaveProperty('languages');
-      expect(schema.properties!.languages.type).toBe('array');
-      expect(schema.properties!.languages.description).toContain('go');
-      expect(schema.properties!.languages.description).toContain('csharp');
-      expect(schema.properties!.languages.description).toContain('typescript');
-      expect(schema.properties!.languages.description).toContain('tsx');
-      expect(schema.properties!.languages.description).toContain('javascript');
-      expect(schema.properties!.languages.description).toContain('rust'); // Added for Rust
-      expect(schema.required).toEqual(['path']);
-    });
-  });
-
-  describe('validateToolParams', () => {
-    it('should return null for valid path with languages', () => {
-      const params: CodeParserToolParams = {
-        path: path.join(tempRootDir, 'dir'),
-        languages: [
-          'python',
-          'go',
-          'csharp',
-          'typescript',
-          'tsx',
-          'javascript',
-        ],
-      };
-      expect(tool.validateToolParams(params)).toBeNull();
-    });
-
-    it('should return error for relative path', () => {
-      const params: CodeParserToolParams = { path: 'file.py' };
-      expect(tool.validateToolParams(params)).toMatch(/Path must be absolute/);
-    });
-
-    it('should return error for path outside root directory', () => {
-      const outsidePath = path.resolve(
-        os.tmpdir(),
-        'some-other-dir',
-        'file.py',
-      );
-      if (outsidePath.startsWith(tempRootDir)) {
-        console.warn(
-          'Skipping outside root test due to overlapping temp/outside paths',
-        );
-        return;
-      }
-      const params: CodeParserToolParams = { path: outsidePath };
-      expect(tool.validateToolParams(params)).toMatch(
-        /Path must be within the root directory/,
-      );
-    });
-
-    it('should return error if languages is not an array of strings', () => {
-      const params = {
-        path: path.join(tempRootDir, 'file.py'),
-        languages: [123],
-      } as unknown as CodeParserToolParams;
-      expect(tool.validateToolParams(params)).toBe(
-        'Languages parameter must be an array of strings.',
-      );
-    });
-  });
-
-  describe('getDescription', () => {
-    it('should return "Parse <shortened_relative_path>"', () => {
-      const filePath = path.join(tempRootDir, 'src', 'app', 'main.py');
-      const params: CodeParserToolParams = { path: filePath };
-      expect(tool.getDescription(params)).toBe('Parse src/app/main.py');
-    });
-  });
-
-  describe('execute', () => {
-    // --- Error Handling Tests ---
-    it('should return validation error if params are invalid', async () => {
-      const params: CodeParserToolParams = { path: 'relative/path.txt' };
-      const result = await tool.execute(params, abortSignal);
-      expect(result.llmContent).toMatch(
-        /Error: Invalid parameters provided. Reason: Path must be absolute/,
-      );
-      expect(result.returnDisplay).toBe('Error: Failed to execute tool.');
-    });
-
-    it('should return error if target path does not exist', async () => {
-      const targetPath = path.join(tempRootDir, 'nonexistent.py');
-      mockFs.stat.mockRejectedValue({
-        code: 'ENOENT',
-      } as NodeJS.ErrnoException);
-      const params: CodeParserToolParams = { path: targetPath };
-      const result = await tool.execute(params, abortSignal);
-      expect(result.llmContent).toMatch(
-        /Error: Path not found or inaccessible/,
-      );
-      expect(result.returnDisplay).toMatch(
-        /Error: Path not found or inaccessible/,
-      );
-    });
-
-    it('should return error if target path is not a file or directory', async () => {
-      const targetPath = path.join(tempRootDir, 'neither_file_nor_dir');
-      mockFs.stat.mockResolvedValue({
-        isFile: () => false,
-        isDirectory: () => false,
-        size: 0,
-      } as Stats);
-      const params: CodeParserToolParams = { path: targetPath };
-      const result = await tool.execute(params, abortSignal);
-      expect(result.llmContent).toMatch(
-        /Error: Path is not a file or directory/,
-      );
-      expect(result.returnDisplay).toMatch(
-        /Error: Path is not a file or directory/,
-      );
-    });
-
-    it('should return error if no supported languages are specified or available', async () => {
-      const targetPath = path.join(tempRootDir, 'file.py');
-      mockFs.stat.mockResolvedValue({
-        isFile: () => true,
-        isDirectory: () => false,
-        size: 100,
-      } as Stats);
-      // eslint-disable-next-line @typescript-eslint/no-explicit-any
-      const originalGetLanguageParser = (tool as any).getLanguageParser;
-      // eslint-disable-next-line @typescript-eslint/no-explicit-any
-      (tool as any).getLanguageParser = vi.fn().mockReturnValue(undefined);
-
-      const params: CodeParserToolParams = {
-        path: targetPath,
-        languages: ['fantasy-lang'],
-      };
-      const result = await tool.execute(params, abortSignal);
-      expect(result.llmContent).toMatch(
-        /Error: No supported languages specified for parsing/,
-      );
-      expect(result.returnDisplay).toMatch(
-        /Error: No supported languages to parse/,
-      );
-      // eslint-disable-next-line @typescript-eslint/no-explicit-any
-      (tool as any).getLanguageParser = originalGetLanguageParser; // Restore
-    });
-
-    // --- Single File Parsing Tests ---
-    it('should parse a single Python file successfully', async () => {
-      const targetPath = path.join(tempRootDir, 'test.py');
-      const fileContent = 'print("hello")';
-      mockFs.stat.mockResolvedValue({
-        isFile: () => true,
-        isDirectory: () => false,
-        size: fileContent.length,
-      } as Stats);
-      mockFs.readFile.mockResolvedValue(fileContent);
-      mockTreeSitterParse.mockReturnValue({
-        rootNode: { toString: () => '(python_ast)' },
-      });
-
-      const params: CodeParserToolParams = { path: targetPath };
-      const result = await tool.execute(params, abortSignal);
-
-      expect(mockSetLanguage).toHaveBeenCalledWith(mockPythonGrammar);
-      expect(mockTreeSitterParse).toHaveBeenCalledWith(fileContent);
-      expect(result.llmContent).toBe(
-        `Parsed code from ${targetPath}:\n-------------${targetPath}-------------\n(python_ast)\n\n`,
-      );
-      expect(result.returnDisplay).toBe('Parsed 1 file(s).');
-    });
-
-    it('should parse a single Java file successfully', async () => {
-      const targetPath = path.join(tempRootDir, 'Test.java');
-      const fileContent = 'class Test {}';
-      mockFs.stat.mockResolvedValue({
-        isFile: () => true,
-        isDirectory: () => false,
-        size: fileContent.length,
-      } as Stats);
-      mockFs.readFile.mockResolvedValue(fileContent);
-      mockTreeSitterParse.mockReturnValue({
-        rootNode: { toString: () => '(java_ast)' },
-      });
-
-      const params: CodeParserToolParams = { path: targetPath };
-      const result = await tool.execute(params, abortSignal);
-
-      expect(mockSetLanguage).toHaveBeenCalledWith(mockJavaGrammar);
-      expect(mockTreeSitterParse).toHaveBeenCalledWith(fileContent);
-      expect(result.llmContent).toBe(
-        `Parsed code from ${targetPath}:\n-------------${targetPath}-------------\n(java_ast)\n\n`,
-      );
-      expect(result.returnDisplay).toBe('Parsed 1 file(s).');
-    });
-
-    it('should parse a single Go file successfully', async () => {
-      const targetPath = path.join(tempRootDir, 'main.go');
-      const fileContent = 'package main\nfunc main(){}';
-      mockFs.stat.mockResolvedValue({
-        isFile: () => true,
-        isDirectory: () => false,
-        size: fileContent.length,
-      } as Stats);
-      mockFs.readFile.mockResolvedValue(fileContent);
-      mockTreeSitterParse.mockReturnValue({
-        rootNode: { toString: () => '(go_ast)' },
-      });
-
-      const params: CodeParserToolParams = { path: targetPath };
-      const result = await tool.execute(params, abortSignal);
-
-      expect(mockSetLanguage).toHaveBeenCalledWith(mockGoGrammar);
-      expect(mockTreeSitterParse).toHaveBeenCalledWith(fileContent);
-      expect(result.llmContent).toBe(
-        `Parsed code from ${targetPath}:\n-------------${targetPath}-------------\n(go_ast)\n\n`,
-      );
-      expect(result.returnDisplay).toBe('Parsed 1 file(s).');
-    });
-
-    it('should parse a single C# file successfully', async () => {
-      const targetPath = path.join(tempRootDir, 'Program.cs');
-      const fileContent =
-        'namespace HelloWorld { class Program { static void Main(string[] args) { System.Console.WriteLine("Hello World!"); } } }';
-      mockFs.stat.mockResolvedValue({
-        isFile: () => true,
-        isDirectory: () => false,
-        size: fileContent.length,
-      } as Stats);
-      mockFs.readFile.mockResolvedValue(fileContent);
-      mockTreeSitterParse.mockReturnValue({
-        rootNode: { toString: () => '(csharp_ast)' },
-      });
-
-      const params: CodeParserToolParams = { path: targetPath };
-      const result = await tool.execute(params, abortSignal);
-
-      expect(mockSetLanguage).toHaveBeenCalledWith(mockCSharpGrammar);
-      expect(mockTreeSitterParse).toHaveBeenCalledWith(fileContent);
-      expect(result.llmContent).toBe(
-        `Parsed code from ${targetPath}:\n-------------${targetPath}-------------\n(csharp_ast)\n\n`,
-      );
-      expect(result.returnDisplay).toBe('Parsed 1 file(s).');
-    });
-
-    it('should parse a single TypeScript (.ts) file successfully', async () => {
-      const targetPath = path.join(tempRootDir, 'app.ts');
-      const fileContent = 'const x: number = 10;';
-      mockFs.stat.mockResolvedValue({
-        isFile: () => true,
-        isDirectory: () => false,
-        size: fileContent.length,
-      } as Stats);
-      mockFs.readFile.mockResolvedValue(fileContent);
-      mockTreeSitterParse.mockReturnValue({
-        rootNode: { toString: () => '(ts_ast)' },
-      });
-
-      const params: CodeParserToolParams = { path: targetPath };
-      const result = await tool.execute(params, abortSignal);
-
-      expect(mockSetLanguage).toHaveBeenCalledWith(mockTypeScriptGrammar);
-      expect(mockTreeSitterParse).toHaveBeenCalledWith(fileContent);
-      expect(result.llmContent).toBe(
-        `Parsed code from ${targetPath}:\n-------------${targetPath}-------------\n(ts_ast)\n\n`,
-      );
-      expect(result.returnDisplay).toBe('Parsed 1 file(s).');
-    });
-
-    it('should parse a single TSX (.tsx) file successfully', async () => {
-      const targetPath = path.join(tempRootDir, 'component.tsx');
-      const fileContent = 'const Comp = () => <div />;';
-      mockFs.stat.mockResolvedValue({
-        isFile: () => true,
-        isDirectory: () => false,
-        size: fileContent.length,
-      } as Stats);
-      mockFs.readFile.mockResolvedValue(fileContent);
-      mockTreeSitterParse.mockReturnValue({
-        rootNode: { toString: () => '(tsx_ast)' },
-      });
-
-      const params: CodeParserToolParams = { path: targetPath };
-      const result = await tool.execute(params, abortSignal);
-
-      expect(mockSetLanguage).toHaveBeenCalledWith(mockTSXGrammar);
-      expect(mockTreeSitterParse).toHaveBeenCalledWith(fileContent);
-      expect(result.llmContent).toBe(
-        `Parsed code from ${targetPath}:\n-------------${targetPath}-------------\n(tsx_ast)\n\n`,
-      );
-      expect(result.returnDisplay).toBe('Parsed 1 file(s).');
-    });
-
-    it('should parse a single JavaScript (.js) file successfully', async () => {
-      const targetPath = path.join(tempRootDir, 'script.js');
-      const fileContent = 'console.log("hello");';
-      mockFs.stat.mockResolvedValue({
-        isFile: () => true,
-        isDirectory: () => false,
-        size: fileContent.length,
-      } as Stats);
-      mockFs.readFile.mockResolvedValue(fileContent);
-      mockTreeSitterParse.mockReturnValue({
-        rootNode: { toString: () => '(js_ast)' },
-      });
-
-      const params: CodeParserToolParams = { path: targetPath };
-      const result = await tool.execute(params, abortSignal);
-
-      expect(mockSetLanguage).toHaveBeenCalledWith(mockTypeScriptGrammar); // Uses TypeScript grammar for JS
-      expect(mockTreeSitterParse).toHaveBeenCalledWith(fileContent);
-      expect(result.llmContent).toBe(
-        `Parsed code from ${targetPath}:\n-------------${targetPath}-------------\n(js_ast)\n\n`,
-      );
-      expect(result.returnDisplay).toBe('Parsed 1 file(s).');
-    });
-
-    it('should parse a single Rust (.rs) file successfully', async () => {
-      const targetPath = path.join(tempRootDir, 'main.rs');
-      const fileContent = 'fn main() { println!("Hello, Rust!"); }';
-      mockFs.stat.mockResolvedValue({
-        isFile: () => true,
-        isDirectory: () => false,
-        size: fileContent.length,
-      } as Stats);
-      mockFs.readFile.mockResolvedValue(fileContent);
-      mockTreeSitterParse.mockReturnValue({
-        rootNode: { toString: () => '(rust_ast)' },
-      });
-
-      const params: CodeParserToolParams = { path: targetPath };
-      const result = await tool.execute(params, abortSignal);
-
-      expect(mockSetLanguage).toHaveBeenCalledWith(mockRustGrammar);
-      expect(mockTreeSitterParse).toHaveBeenCalledWith(fileContent);
-      expect(result.llmContent).toBe(
-        `Parsed code from ${targetPath}:\n-------------${targetPath}-------------\n(rust_ast)\n\n`,
-      );
-      expect(result.returnDisplay).toBe('Parsed 1 file(s).');
-    });
-
-    it('should parse a JavaScript JSX (.jsx) file successfully (using tsx parser)', async () => {
-      const targetPath = path.join(tempRootDir, 'component.jsx');
-      const fileContent = 'const Comp = () => <div />;';
-      mockFs.stat.mockResolvedValue({
-        isFile: () => true,
-        isDirectory: () => false,
-        size: fileContent.length,
-      } as Stats);
-      mockFs.readFile.mockResolvedValue(fileContent);
-      mockTreeSitterParse.mockReturnValue({
-        rootNode: { toString: () => '(jsx_ast)' },
-      });
-
-      const params: CodeParserToolParams = { path: targetPath };
-      const result = await tool.execute(params, abortSignal);
-
-      expect(mockSetLanguage).toHaveBeenCalledWith(mockTSXGrammar);
-      expect(mockTreeSitterParse).toHaveBeenCalledWith(fileContent);
-      expect(result.llmContent).toBe(
-        `Parsed code from ${targetPath}:\n-------------${targetPath}-------------\n(jsx_ast)\n\n`,
-      );
-      expect(result.returnDisplay).toBe('Parsed 1 file(s).');
-    });
-
-    it('should return error for unsupported file type if specified directly', async () => {
-      const targetPath = path.join(tempRootDir, 'notes.txt');
-      mockFs.stat.mockResolvedValue({
-        isFile: () => true,
-        isDirectory: () => false,
-        size: 10,
-      } as Stats);
-
-      const params: CodeParserToolParams = { path: targetPath };
-      const result = await tool.execute(params, abortSignal);
-
-      expect(result.llmContent).toMatch(
-        /Error: File .* is not of a supported language type/,
-      );
-      expect(result.returnDisplay).toMatch(
-        /Error: Unsupported file type or language/,
-      );
-    });
-
-    it('should skip file if it exceeds maxFileSize', async () => {
-      const targetPath = path.join(tempRootDir, 'large.py');
-      mockFs.stat.mockResolvedValue({
-        isFile: () => true,
-        isDirectory: () => false,
-        size: 1024 * 1024 + 1,
-      } as Stats); // 1MB + 1 byte
-
-      const params: CodeParserToolParams = { path: targetPath };
-      const result = await tool.execute(params, abortSignal);
-
-      expect(mockFs.readFile).not.toHaveBeenCalled();
-      expect(result.llmContent).toMatch(
-        /Error: Could not parse file .*large.py/,
-      );
-      expect(result.returnDisplay).toBe('Error: Failed to parse file.');
-    });
-
-    it('should return error if parsing a supported file fails internally', async () => {
-      const targetPath = path.join(tempRootDir, 'broken.py');
-      const fileContent = 'print("hello")';
-      mockFs.stat.mockResolvedValue({
-        isFile: () => true,
-        isDirectory: () => false,
-        size: fileContent.length,
-      } as Stats);
-      mockFs.readFile.mockResolvedValue(fileContent);
-      mockTreeSitterParse.mockImplementation(() => {
-        throw new Error('TreeSitterCrashed');
-      });
-
-      const params: CodeParserToolParams = { path: targetPath };
-      const result = await tool.execute(params, abortSignal);
-
-      expect(result.llmContent).toMatch(
-        /Error: Could not parse file .*broken.py/,
-      );
-      expect(result.returnDisplay).toMatch(/Error: Failed to parse file./);
-    });
-
-    // --- Directory Parsing Tests ---
-    it('should parse supported files in a directory (including Go, C#, TS, JS, TSX)', async () => {
-      const dirPath = path.join(tempRootDir, 'src');
-      const files = [
-        'main.py',
-        'helper.java',
-        'service.go',
-        'App.cs',
-        'logic.ts',
-        'ui.tsx',
-        'utils.js',
-        'main.rs', // Added Rust file
-        'config.txt',
-      ];
-      const pythonContent = 'import os';
-      const javaContent = 'public class Helper {}';
-      const goContent = 'package main';
-      const csharpContent = 'public class App {}';
-      const tsContent = 'let val: number = 1;';
-      const tsxContent = 'const MyComp = () => <p />;';
-      const jsContent = 'function hello() {}';
-      const rustContent = 'fn start() {}'; // Added Rust content
-
-      mockFs.stat.mockImplementation(async (p) => {
-        if (p === dirPath)
-          return { isFile: () => false, isDirectory: () => true } as Stats;
-        if (p === path.join(dirPath, 'main.py'))
-          return {
-            isFile: () => true,
-            isDirectory: () => false,
-            size: pythonContent.length,
-          } as Stats;
-        if (p === path.join(dirPath, 'helper.java'))
-          return {
-            isFile: () => true,
-            isDirectory: () => false,
-            size: javaContent.length,
-          } as Stats;
-        if (p === path.join(dirPath, 'service.go'))
-          return {
-            isFile: () => true,
-            isDirectory: () => false,
-            size: goContent.length,
-          } as Stats;
-        if (p === path.join(dirPath, 'App.cs'))
-          return {
-            isFile: () => true,
-            isDirectory: () => false,
-            size: csharpContent.length,
-          } as Stats;
-        if (p === path.join(dirPath, 'logic.ts'))
-          return {
-            isFile: () => true,
-            isDirectory: () => false,
-            size: tsContent.length,
-          } as Stats;
-        if (p === path.join(dirPath, 'ui.tsx'))
-          return {
-            isFile: () => true,
-            isDirectory: () => false,
-            size: tsxContent.length,
-          } as Stats;
-        if (p === path.join(dirPath, 'utils.js'))
-          return {
-            isFile: () => true,
-            isDirectory: () => false,
-            size: jsContent.length,
-          } as Stats;
-        if (p === path.join(dirPath, 'main.rs'))
-          // Added for Rust
-          return {
-            isFile: () => true,
-            isDirectory: () => false,
-            size: rustContent.length,
-          } as Stats;
-        if (p === path.join(dirPath, 'config.txt'))
-          return {
-            isFile: () => true,
-            isDirectory: () => false,
-            size: 10,
-          } as Stats;
-        throw { code: 'ENOENT' };
-      });
-      mockFs.readdir.mockImplementation(
-        vi.fn(async (p: PathLike): Promise<string[]> => {
-          const dirPath = path.join(tempRootDir, 'src'); // Path for this specific test
-          if (p === dirPath) {
-            return files; // files is in scope for this test
-          }
-          throw new Error(
-            `fs.readdir mock: Unhandled path ${p} in test 'should parse supported files in a directory'`,
-          );
-        }) as unknown as typeof fs.readdir,
-      );
-      mockFs.readFile.mockImplementation(async (p) => {
-        if (p === path.join(dirPath, 'main.py')) return pythonContent;
-        if (p === path.join(dirPath, 'helper.java')) return javaContent;
-        if (p === path.join(dirPath, 'service.go')) return goContent;
-        if (p === path.join(dirPath, 'App.cs')) return csharpContent;
-        if (p === path.join(dirPath, 'logic.ts')) return tsContent;
-        if (p === path.join(dirPath, 'ui.tsx')) return tsxContent;
-        if (p === path.join(dirPath, 'utils.js')) return jsContent;
-        if (p === path.join(dirPath, 'main.rs')) return rustContent; // Added for Rust
-        return '';
-      });
-      mockTreeSitterParse.mockImplementation((content) => {
-        if (content === pythonContent)
-          return { rootNode: { toString: () => '(py_ast_dir)' } };
-        if (content === javaContent)
-          return { rootNode: { toString: () => '(java_ast_dir)' } };
-        if (content === goContent)
-          return { rootNode: { toString: () => '(go_ast_dir)' } };
-        if (content === csharpContent)
-          return { rootNode: { toString: () => '(csharp_ast_dir)' } };
-        if (content === tsContent)
-          return { rootNode: { toString: () => '(ts_ast_dir)' } };
-        if (content === tsxContent)
-          return { rootNode: { toString: () => '(tsx_ast_dir)' } };
-        if (content === jsContent)
-          return { rootNode: { toString: () => '(js_ast_dir)' } };
-        if (content === rustContent)
-          // Added for Rust
-          return { rootNode: { toString: () => '(rust_ast_dir)' } };
-        return { rootNode: { toString: () => '(other_ast)' } };
-      });
-
-      const params: CodeParserToolParams = { path: dirPath };
-      const result = await tool.execute(params, abortSignal);
-
-      expect(result.llmContent).toContain(
-        `-------------${path.join(dirPath, 'main.py')}-------------\n(py_ast_dir)\n`,
-      );
-      expect(result.llmContent).toContain(
-        `-------------${path.join(dirPath, 'helper.java')}-------------\n(java_ast_dir)\n`,
-      );
-      expect(result.llmContent).toContain(
-        `-------------${path.join(dirPath, 'service.go')}-------------\n(go_ast_dir)\n`,
-      );
-      expect(result.llmContent).toContain(
-        `-------------${path.join(dirPath, 'App.cs')}-------------\n(csharp_ast_dir)\n`,
-      );
-      expect(result.llmContent).toContain(
-        `-------------${path.join(dirPath, 'logic.ts')}-------------\n(ts_ast_dir)\n`,
-      );
-      expect(result.llmContent).toContain(
-        `-------------${path.join(dirPath, 'ui.tsx')}-------------\n(tsx_ast_dir)\n`,
-      );
-      expect(result.llmContent).toContain(
-        `-------------${path.join(dirPath, 'utils.js')}-------------\n(js_ast_dir)\n`,
-      );
-      expect(result.llmContent).toContain(
-        // Added for Rust
-        `-------------${path.join(dirPath, 'main.rs')}-------------\n(rust_ast_dir)\n`,
-      );
-      expect(result.llmContent).not.toContain('config.txt');
-      expect(result.returnDisplay).toBe('Parsed 8 file(s).'); // Updated count
-    });
-
-    it('should only parse languages specified in the languages parameter for directory', async () => {
-      const dirPath = path.join(tempRootDir, 'mixed_lang_project');
-      const files = [
-        'script.py',
-        'Main.java',
-        'another.py',
-        'app.go',
-        'Logic.cs',
-        'index.ts',
-        'view.tsx',
-        'helper.js',
-        'main.rs', // Added Rust file
-      ];
-      mockFs.stat.mockImplementation(async (p) => {
-        if (p === dirPath)
-          return { isFile: () => false, isDirectory: () => true } as Stats;
-        return {
-          isFile: () => true,
-          isDirectory: () => false,
-          size: 10,
-        } as Stats;
-      });
-      mockFs.readdir.mockImplementation(
-        vi.fn(async (p: PathLike): Promise<string[]> => {
-          // dirPath and files are in scope for this specific test
-          if (p === dirPath) {
-            return files;
-          }
-          throw new Error(
-            `fs.readdir mock: Unhandled path ${p} in test 'should only parse languages specified'`,
-          );
-        }) as unknown as typeof fs.readdir,
-      );
-      mockFs.readFile.mockResolvedValue('content');
-
-      const params: CodeParserToolParams = {
-        path: dirPath,
-        languages: [
-          'java',
-          'go',
-          'csharp',
-          'typescript',
-          'tsx',
-          'javascript',
-          'rust',
-        ], // Added rust
-      };
-      const result = await tool.execute(params, abortSignal);
-
-      expect(result.llmContent).toContain(path.join(dirPath, 'Main.java'));
-      expect(result.llmContent).toContain(path.join(dirPath, 'app.go'));
-      expect(result.llmContent).toContain(path.join(dirPath, 'Logic.cs'));
-      expect(result.llmContent).toContain(path.join(dirPath, 'index.ts'));
-      expect(result.llmContent).toContain(path.join(dirPath, 'view.tsx'));
-      expect(result.llmContent).toContain(path.join(dirPath, 'helper.js'));
-      expect(result.llmContent).toContain(path.join(dirPath, 'main.rs')); // Added for Rust
-      expect(result.llmContent).not.toContain('script.py');
-      expect(result.llmContent).not.toContain('another.py');
-      expect(result.returnDisplay).toBe('Parsed 7 file(s).'); // Updated count
-    });
-
-    it('should return "Directory is empty" for an empty directory', async () => {
-      const dirPath = path.join(tempRootDir, 'empty_dir');
-      mockFs.stat.mockResolvedValue({
-        isFile: () => false,
-        isDirectory: () => true,
-      } as Stats);
-      mockFs.readdir.mockResolvedValue([]);
-
-      const params: CodeParserToolParams = { path: dirPath };
-      const result = await tool.execute(params, abortSignal);
-
-      expect(result.llmContent).toBe(`Directory ${dirPath} is empty.`);
-      expect(result.returnDisplay).toBe('Directory is empty.');
-    });
-
-    it('should handle error if fs.readdir fails', async () => {
-      const dirPath = path.join(tempRootDir, 'unreadable_dir');
-      mockFs.stat.mockResolvedValue({
-        isFile: () => false,
-        isDirectory: () => true,
-      } as Stats);
-      mockFs.readdir.mockRejectedValue(new Error('Permission denied'));
-
-      const params: CodeParserToolParams = { path: dirPath };
-      const result = await tool.execute(params, abortSignal);
-
-      expect(result.llmContent).toMatch(
-        /Error listing or processing directory/,
-      );
-      expect(result.returnDisplay).toMatch(
-        /Error: Failed to process directory./,
-      );
-    });
-  });
-
-  describe('requiresConfirmation', () => {
-    it('should return null', async () => {
-      const params: CodeParserToolParams = { path: 'anypath' };
-      expect(await tool.requiresConfirmation(params)).toBeNull();
-    });
-  });
-});