Description

Build unit and integration tests for all components.

Tasks

• Write unit tests for z-score calculation
• Write unit tests for statistical tests (ADF, KPSS, Hurst)
• Write unit tests for walk-forward engine
• Write unit tests for FDR correction
• Write integration tests for API endpoints
• Write tests for deterministic outputs
• Achieve >80% code coverage
• Add test scenarios from validation guide

Documentation

• See docs/07-validation-testing.md for test scenarios
• See docs/06-starter-templates.md for test examples

Acceptance Criteria

• All tests pass
• Coverage >80%
• Tests validate correctness per spec