update skipped test handling to include skip reason

[thomhurst]

Fixes #3441

[claude]

Claude finished @thomhurst's task —— View job

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Pull Request Review ✅

Reviewing PR: update skipped test handling to include skip reason (Fixes #3441)

Review Tasks:

• Read repository guidelines (CLAUDE.md)
• Analyze changed files
• Review code quality and best practices
• Check for potential bugs or issues
• Evaluate performance considerations
• Assess security concerns
• Review test coverage
• Provide comprehensive feedback

Changes Summary:

TestCoordinator.cs (net -3 lines):

• Added test.Context.SkipReason = ex.Message; when handling SkipTestException
• Removed duplicate invocation of InvokeTestEndEventReceiversAsync for skipped tests (already called in finally block)
• Removed redundant comments

LastTestEventReceiverTests.cs (+64 lines):

• Added comprehensive test suite for skip event handling
• Tests for both attribute-based skip ([Skip]) and runtime skip (Skip.Test())
• Verifies that skip reason is properly captured and preserved
• Tests event receiver ordering and proper invocation

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Review Feedback

✅ Code Quality & Best Practices

• Excellent: Follows TUnit's modern C# coding standards and conventions
• Good: Proper error handling and state management
• Good: Clean separation of concerns maintained
• Minor: The fix is minimal and surgical - only adds the missing skip reason assignment

✅ Bug Fix Analysis

• Root cause identified: Previously, when SkipTestException was caught, the skip reason wasn't being stored in test.Context.SkipReason, causing event receivers to receive null or empty skip reasons
• Proper fix: Added test.Context.SkipReason = ex.Message; to ensure consistency with other skip scenarios (TestCoordinator.cs:97)
• Cleanup improvement: Removed duplicate InvokeTestEndEventReceiversAsync call that was redundant with the finally block invocation

✅ Performance Considerations

• No performance regression: Changes are minimal with no additional allocations
• Improved efficiency: Removed duplicate event receiver invocation reduces unnecessary overhead
• Consistent with framework goals: Aligns with TUnit's "performance first" philosophy

✅ Security Concerns

• No security issues: Changes only affect internal test coordination logic
• Safe exception handling: Proper exception message propagation without exposing sensitive data

✅ Test Coverage

• Comprehensive testing: New test suite covers multiple skip scenarios:
  • Attribute-based skipping with [Skip("reason")]
  • Runtime skipping with Skip.Test("reason")
  • Event receiver invocation order and timing
  • Skip reason preservation and accessibility
• Edge case coverage: Tests verify both immediate and asynchronous event receiver behavior
• Integration testing: Tests actual event receiver orchestration in realistic scenarios

✅ Architecture Consistency

• Dual-mode compatibility: Changes work identically in both source-generated and reflection modes
• Thread-safe: No shared state modifications that could cause race conditions
• Event ordering: Maintains proper event sequence (TestSkipped → TestEnd in finally block)

🔍 Minor Observations

1. Line 244: The skip reason fallback test.Context.SkipReason ?? "Skipped" in the message bus ensures robustness even if skip reason is null
2. Test timing: 100ms delays in tests are appropriate for async event receiver completion
3. Event verification: Test assertions properly check both event firing and skip reason capture

Recommendation: ✅ APPROVE

This is a well-implemented bug fix that:

• Solves the skip reason handling issue completely
• Includes comprehensive test coverage
• Improves code efficiency by removing duplication
• Maintains architectural consistency
• Has no negative performance or security impact

The PR demonstrates good understanding of the TUnit framework's event system and follows all repository guidelines.

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