TASK-501: Integration Test Suite

[copyleftdev]

Description

End-to-end integration tests per TESTING_STRATEGY.md

Phase

Set up development infrastructure with Tiger Style discipline

Acceptance Criteria

• Simple GET test (HTTP/1.1)
• POST request test (with body)
• HTTP/2 multiplexing test
• Concurrent VU test (1000+ VUs)
• Long-duration test (10+ minutes)
• Error scenario tests (timeouts, connection failures)
• Determinism verification test (replay)
• Metric accuracy test (known workload)
• All tests use mock servers (no external dependencies)
• Test execution time < 5 minutes
• All integration tests pass

Dependencies

• TASK-302

Files to Create/Modify

tests/integration/*.zig
tests/integration/mock_server.zig
tests/integration/fixtures/...

Estimated Effort

32 hours

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Tiger Style Requirements:

• Minimum 2 assertions per function
• All loops are bounded
• Explicit error handling (no silent failures)
• Code formatted with zig fmt
• Pre-commit hook passes
• All tests pass