[Testing] Final Verification Before Cutover

[itomek-amd]

Overview

Comprehensive verification that tests_v2/ has equivalent or better coverage than tests/ before CI cutover.

Scope

• Compare test counts between old and new test structures
• Verify all test behaviors are preserved
• Document any intentionally removed tests
• Generate coverage comparison report

Verification Steps

1. Test Count Comparison

# Count tests in old structure
pytest tests/ --collect-only -q | tail -1

# Count tests in new structure
pytest tests_v2/ --collect-only -q | tail -1

# Compare counts

2. Coverage Comparison

# Old structure coverage
pytest tests/ --cov=src/gaia --cov-report=term

# New structure coverage
pytest tests_v2/ --cov=src/gaia --cov-report=term

# Compare coverage percentages

3. Test Behavior Verification

• All critical test behaviors preserved
• No regressions introduced
• Anti-patterns successfully removed (13 _TOOL_REGISTRY.clear() calls)
• Hardcoded ports replaced with dynamic allocation

4. Documentation

Create verification report documenting:

• Test count comparison (old vs new)
• Coverage comparison (should be ≥ old coverage)
• List of intentionally removed tests (if any)
• Anti-patterns fixed

Acceptance Criteria

• Test count verification complete: tests_v2/ has ≥ tests as tests/
• Coverage verification: tests_v2/ coverage ≥ 15% (current target)
• All anti-patterns documented as fixed
• Verification report created
• Both test suites pass: pytest tests/ -v and pytest tests_v2/ -v

Parent Issue

Part of #209 - Test Suite Overhaul Epic

Dependencies

Requires all migration issues (#239-244) to be completed first.