Atrax

# Comprehensive Testing Guide for Atrax Type Improvements This guide outlines the test strategy for validating the type improvements made in Steps 1-8 of our plan to replace `any` with proper TypeScript types. ## Test Coverage Overview We've created a comprehensive set of tests in these categories: 1. **Type Definition Tests** - Validate our custom type definitions 2. **McpProxy Tests** - Test the improved method determination with generics 3. **ServerRegistry Tests** - Validate improved pendingResponses Map and sendMessage with generics 4. **Transport Tests** - Test the typed event handlers in transport implementations 5. **Auth Config Tests** - Verify the discriminated union approach for auth types 6. **Integration Tests** - End-to-end message flow with proper types ## Running the Tests To run all tests: ```bash npm test ``` To run specific test categories: ```bash # Run only unit tests npm test -- --testPathPattern=tests/unit # Run only a specific test file npm test -- --testPathPattern=tests/unit/mcp-types.test.ts ``` ## Test Files ### Unit Tests 1. **Type Definition Tests** - `tests/unit/mcp-types.test.ts` - Tests for JSONRPCErrorObject, MethodParams, MethodResults, and McpCapabilities - Validates type mapping for MCP methods - Tests compile-time type assertions 2. **McpProxy Tests** - `tests/unit/mcp-proxy.test.ts` - Tests for type-safe method determination - Tests for direct message handling - Tests client transport management with typed events 3. **ServerRegistry Tests** - `tests/unit/server-registry.test.ts` - Tests improved pendingResponses Map with proper types - Tests sendMessage with generic type support - Validates end-to-end message flow with typed responses 4. **Transport Tests** - `tests/unit/transport.test.ts` - Tests typed event handlers for all transport implementations - Validates message handling with proper types - Tests error handling with typed errors 5. **Auth Config Tests** - `tests/unit/auth-config.test.ts` - Tests discriminated union approach for auth types - Validates type guards for runtime type checking - Tests compile-time type safety for auth configurations ### Integration Tests 1. **MCP Types Integration Tests** - `tests/integration/mcp-types-integration.test.ts` - End-to-end testing of message flow through the entire system - Validates proper typing at each stage of message handling - Tests error handling with proper types ## What to Look For When running the tests, look for the following: 1. **Compile-Time Type Errors**: The TypeScript compiler should catch any type mismatches 2. **Runtime Type Validation**: Type guards should properly validate at runtime 3. **Type Inference**: Generic types should properly infer return types 4. **Error Handling**: Errors should be properly typed and handled 5. **Edge Cases**: The tests cover various edge cases, including: - Missing fields in messages - Invalid configuration options - Server disconnection during pending requests - Timeout handling - Error propagation ## Additional Validations After running the tests, these manual checks should be performed: 1. **Build Validation**: Ensure the project builds without errors ```bash npm run build ``` 2. **Smoke Tests**: Run the smoke tests to ensure end-to-end functionality ```bash cd tests/smoke ./test-atrax.sh ``` 3. **Inspector Tool Testing**: Use the MCP Inspector tool to verify protocol compliance (This will be covered in Step 10 of our plan) ## Reporting Issues If you find any issues during testing, please document them with: 1. The specific test that failed 2. The expected vs. actual behavior 3. Any relevant error messages 4. The file and line number where the issue occurs ## Next Steps After completing Step 9 (Comprehensive Testing), we will move to Step 10 (MCP Inspector Tool Testing) to verify protocol compliance using the official MCP Inspector tool.