# PyWatt SDK Testing Coverage

This document outlines the testing coverage for the PyWatt SDK's core functionality.

## Tested Components

### 1. JWT Authentication (`src/jwt_auth/`, `src/jwt_auth_compat.rs`)
- ✅ Core token validation logic
- ✅ Integration with Axum (middleware application, claim extraction)
- ✅ Backward compatibility alias (`JwtAuthLayer`)
- ✅ Interaction with `secret_client` for redaction

### 2. Configuration & Builder (`src/builder.rs`, `src/bootstrap.rs`)
- ✅ `ModuleBuilder` methods for setting configuration options
- ✅ Default configuration values
- ✅ Required vs. optional configuration parameters
- ✅ `AppState` construction based on builder inputs

### 3. Secret Management
- **Providers (`src/secret_provider/`)**
  - ✅ `EnvProvider` functionality and edge cases
  - ✅ `MemoryProvider` functionality and edge cases
  - ✅ Watching/notification mechanisms
- **Client (`src/secret_client/`)**
  - ✅ Secret retrieval logic
  - ✅ Secret rotation subscription and handling
  - ✅ Typed secret retrieval and parsing
  - ✅ Secret redaction registration

### 4. IPC & State (`src/ipc.rs`, `src/ipc_types/`, `src/state.rs`)
- ✅ Serialization/deserialization of IPC message types
- ✅ Core IPC message processing loop logic
- ✅ State management within `AppState`
- ✅ State cloning and type safety

### 5. Bootstrap & Handshake (`src/bootstrap.rs`, `src/handshake.rs`)
- ✅ Parsing `OrchestratorInit` initialization data
- ✅ Error handling during handshake
- ✅ Testing the state builder pattern used during bootstrap

### 6. Module Server (`src/server.rs`)
- ✅ Verifying the router builder pattern
- ✅ Testing endpoint announcement formatting
- ✅ Testing listen address handling

### 7. Announce & Discovery (`src/announce.rs`, `src/router_discovery.rs`)
- ✅ Creation of `ModuleAnnounce` messages
- ✅ Sending announce messages
- ✅ Testing the router discovery functionality (feature-gated)

### 8. Logging (`src/logging.rs`)
- ✅ `init_module` function behavior
- ✅ Testing logging macros at different levels
- ✅ Structured logging functionality

## Notes on Testing Strategy

1. **Mock Objects**: Where appropriate, we've created mock objects to simulate external dependencies such as stdin/stdout for IPC communication.

2. **Conditional Testing**: We've implemented feature-gated tests that only run when the relevant feature is enabled (e.g., `jwt_auth`, `builder`, `discover_endpoints`).

3. **Edge Cases**: We've added tests for error conditions and edge cases, such as invalid messages in IPC communication, missing required fields in builder patterns, and invalid secret formats.

4. **Test Helpers**: We've added helper methods to key components to make them more testable, such as `SecretClient::for_test()` and `insert_test_secret()`.

## Future Improvements

While we've achieved good test coverage, there are some areas that could be improved:

1. **Router Integration Tests**: More comprehensive testing of the router integration could be beneficial, especially for complex routing patterns.

2. **Performance Tests**: Adding benchmarks for performance-critical sections like IPC message handling.

3. **Stress Tests**: Testing under high load conditions, especially for components like secret rotation handling.

4. **Cleanup for Test Warnings**: Fix the remaining test warnings to improve code quality.

5. **Mock Improvements**: Enhance our mocks to better simulate real-world behavior, particularly for IPC communication. 