feat(tests): 🎥 Enhance video recording tests with frame capture

[PrzemyslawKlys]

• Added Wait-RecordedFrame function to ensure at least one frame is captured before stopping video recording.
• Updated tests to utilize the new function for improved reliability.
• Introduced _TestUtils.ps1 for shared test utilities, including Get-FreeTcpPort and Wait-RecordedFrame.

[claude]

Claude finished @PrzemyslawKlys's task —— View job

---

Code Review Complete ✅

I've thoroughly reviewed the video recording test enhancements. Here's my comprehensive feedback:

✅ Code Quality & Best Practices

Excellent overall implementation with strong attention to detail:

• Clean separation of concerns: _TestUtils.ps1 properly centralizes shared utilities
• Consistent error handling: Both utilities use proper try/catch blocks and cleanup patterns
• Good defensive programming: Null checks, validation, and graceful fallbacks throughout
• Clear documentation: Well-structured XML docs and parameter descriptions

✅ Performance Considerations

Well-optimized approach:

• Efficient port allocation: Get-FreeTcpPort uses ephemeral ports (0) for automatic allocation - Tests/_TestUtils.ps1:11
• Smart frame synchronization: Wait-RecordedFrame uses multiple strategies:
  • DOM-based waiting (#loaded selector) - Tests/_TestUtils.ps1:28
  • Layout nudging with minimal scroll - Tests/_TestUtils.ps1:32
  • Double requestAnimationFrame for reliable timing - Tests/_TestUtils.ps1:36
• Minimal delays: Conservative 150ms extra delay vs arbitrary long waits - Tests/_TestUtils.ps1:23

✅ Security Assessment

No security concerns identified:

• Uses localhost/127.0.0.1 binding only
• No external network calls or untrusted input processing
• Proper resource cleanup in all code paths

✅ Test Coverage Improvements

Significant reliability enhancements:

• Addresses flaky tests: The Wait-RecordedFrame function directly targets video recording timing issues
• Better test isolation: Shared utilities prevent code duplication across test files
• IPv4 explicit binding: Resolves macOS IPv6 listener issues - Tests/Save-HTMLAttachment.Streaming.Tests.ps1:6-7
• Consistent usage: All video tests now use Wait-RecordedFrame for reliability

🔍 Minor Observations

1. C# Implementation Enhancement (Sources/HtmlTinkerX/Playwright/HtmlBrowser.Video.cs:150-159):

   • The frame capture logic mirrors PowerShell utility strategy
   • Good use of ConfigureAwait(false) for library code
   • Proper exception handling with best-effort pattern

2. PowerShell Test Updates:

   • Tests now consistently call Wait-RecordedFrame before stopping recording
   • Maintains backward compatibility with existing test structure

📊 Impact Assessment

This PR makes targeted improvements to test reliability without introducing breaking changes:

• Reduces flaky test failures by ensuring video frames are captured
• Improves CI/CD reliability through better test timing
• Maintains API compatibility - no changes to public interfaces
• Follows established patterns in both C# and PowerShell codebases

🎯 Recommendation

✅ APPROVE - This is a well-crafted enhancement that addresses real testing pain points with minimal risk. The implementation demonstrates good engineering practices and will improve the overall test suite reliability.

The dual approach (C# + PowerShell utilities) ensures consistent behavior across different test scenarios while maintaining clean separation of concerns.

[codecov]

Codecov Report

❌ Patch coverage is 80.00000% with 1 line in your changes missing coverage. Please review.
✅ Project coverage is 46.95%. Comparing base (b871888) to head (6ba3586).

Files with missing lines	Patch %	Lines
...ources/HtmlTinkerX/Playwright/HtmlBrowser.Video.cs	80.00%	1 Missing ⚠️

Additional details and impacted files

@@                  Coverage Diff                  @@
##           v2-speedygonzales     #354      +/-   ##
=====================================================
- Coverage              47.08%   46.95%   -0.13%     
=====================================================
  Files                    145      145              
  Lines                   6720     6725       +5     
  Branches                1355     1356       +1     
=====================================================
- Hits                    3164     3158       -6     
- Misses                  3191     3200       +9     
- Partials                 365      367       +2     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.
• 📦 JS Bundle Analysis: Save yourself from yourself by tracking and limiting bundle sizes in JS merges.

[claude]

Claude finished @PrzemyslawKlys's task —— View job

---

Comprehensive Code Review Complete ✅

I've thoroughly analyzed the video recording test enhancements in PR #354. Here's my detailed feedback:

Todo List:

• Read repository guidelines (CLAUDE.md) - No repo-specific guidelines found
• Analyze new _TestUtils.ps1 utility file
• Review C# video recording enhancements
• Examine PowerShell test updates
• Check for code quality and best practices
• Identify potential bugs or issues
• Assess performance considerations
• Review security concerns
• Evaluate test coverage improvements
• Provide comprehensive feedback and recommendations

---

✅ Code Quality & Architecture

Excellent implementation with strong separation of concerns:

1. Clean modularization: The new _TestUtils.ps1 properly centralizes shared utilities across test files - Tests/_TestUtils.ps1:1-61
2. Consistent error handling: All utilities use proper try/catch blocks with graceful fallbacks - Tests/_TestUtils.ps1:27-37
3. Resource management: Proper cleanup patterns in Get-FreeTcpPort with finally blocks - Tests/_TestUtils.ps1:13-15
4. Documentation: Well-structured XML documentation and clear parameter descriptions throughout

✅ Performance & Reliability Improvements

Smart frame synchronization strategy:

1. Multi-layered approach: Wait-RecordedFrame uses three complementary strategies:

   • DOM-based waiting: Waits for #loaded selector that matches test HTML structure - Tests/_TestUtils.ps1:28
   • Layout nudging: Minimal scroll to trigger layout recalculation - Tests/_TestUtils.ps1:32
   • Animation frame sync: Double requestAnimationFrame for reliable rendering timing - Tests/_TestUtils.ps1:36

2. Efficient port allocation: Get-FreeTcpPort uses ephemeral ports (0) for automatic OS allocation - Tests/_TestUtils.ps1:11

3. Conservative delays: Uses minimal 150ms extra delay vs arbitrary long waits - Tests/_TestUtils.ps1:23

4. C# implementation consistency: The C# version mirrors the PowerShell strategy with proper async/await patterns - Sources/HtmlTinkerX/Playwright/HtmlBrowser.Video.cs:154-155

✅ Security Assessment

No security concerns identified:

• Uses localhost/127.0.0.1 binding exclusively
• No external network calls or untrusted input processing
• Proper resource cleanup in all error paths
• IPv4 explicit binding prevents potential IPv6 listener issues - Tests/Save-HTMLAttachment.Streaming.Tests.ps1:6-7

✅ Test Coverage & Flaky Test Mitigation

Significant reliability improvements:

1. Addresses root cause: The frame capture logic directly targets video recording timing issues that cause flaky tests
2. Consistent application: All video tests now use Wait-RecordedFrame before stopping recording
3. Better isolation: Shared utilities prevent code duplication and ensure consistent behavior across test files
4. File readiness checks: New Wait-FileReady function ensures files are completely written before validation - Tests/_TestUtils.ps1:41-60

🔍 Minor Observations & Suggestions

1. C# Code Quality (Sources/HtmlTinkerX/Playwright/HtmlBrowser.Video.cs:150-159):

   • ✅ Good use of ConfigureAwait(false) for library code
   • ✅ Proper exception handling with best-effort pattern
   • ✅ Consistent with PowerShell implementation strategy

2. PowerShell Implementation:

   • ✅ Good defensive programming with null checks - Tests/_TestUtils.ps1:25
   • ✅ Proper parameter validation and default values
   • ✅ Graceful degradation when operations fail

3. Test Integration:

   • ✅ Maintains backward compatibility - no breaking changes to existing APIs
   • ✅ Follows established test patterns in the codebase

📊 Coverage Analysis

The Codecov report shows 80% patch coverage with 1 missing line. The uncovered line appears to be in the exception handling path (Sources/HtmlTinkerX/Playwright/HtmlBrowser.Video.cs:156), which is acceptable for a best-effort operation that shouldn't fail the main functionality.

🎯 Final Recommendation

✅ STRONGLY APPROVE - This is an exemplary enhancement that:

• Solves real problems: Directly addresses flaky video recording tests
• Follows best practices: Clean architecture, proper error handling, resource management
• Maintains compatibility: No breaking changes to existing APIs
• Improves reliability: Smart multi-strategy approach to frame synchronization
• Demonstrates quality: Good documentation, defensive programming, and consistent patterns

The dual implementation (C# + PowerShell) ensures consistent behavior across different test scenarios while maintaining clean separation of concerns. This will significantly improve CI/CD reliability for video recording tests.

---