Fix MSTest analyzer warnings (MSTEST0058, MSTEST0037)

[Copilot]

Pull Request

Description

Addressed 7 Sonar/MSTest analyzer warnings in test files:

MSTEST0058 (RequirementsReadTests.cs): Asserts in catch blocks don't fail if no exception is thrown.

• Changed: try { code; Assert.Fail(); } catch { Assert.Contains(...); }
• To: var ex = Assert.ThrowsExactly<T>(() => code); Assert.Contains(...);

MSTEST0037 (ContextTests.cs): Using Assert.IsTrue with collection predicates instead of explicit assertions.

• Changed: Assert.IsTrue(files.Any(f => f.EndsWith("file.yaml")))
• To: Assert.ContainsSingle(f => f.EndsWith("file.yaml"), files)

The Assert.ContainsSingle approach is the idiomatic MSTest v4 way to assert that exactly one element matches a predicate. Collections contain full paths, hence the .EndsWith() predicate.

Type of Change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Documentation update
• Code quality improvement

Related Issues

Pre-Submission Checklist

Before submitting this pull request, ensure you have completed the following:

Build and Test

• Code builds successfully: dotnet build --configuration Release
• All tests pass: dotnet test --configuration Release
• Code produces zero warnings

Code Quality

• Code formatting is correct: dotnet format --verify-no-changes
• New code has appropriate XML documentation comments
• Static analyzer warnings have been addressed

Quality Checks

Please run the following checks before submitting:

• Spell checker passes: cspell "**/*.{md,cs}"
• Markdown linter passes: markdownlint "**/*.md"
• YAML linter passes: yamllint '**/*.{yml,yaml}'

Testing

• Added unit tests for new functionality
• Updated existing tests if behavior changed
• All tests follow the AAA (Arrange, Act, Assert) pattern
• Test coverage is maintained or improved

Documentation

• Updated README.md (if applicable)
• Updated ARCHITECTURE.md (if applicable)
• Added code examples for new features (if applicable)
• Updated requirements.yaml (if applicable)

Additional Notes

No functional changes—test behavior is identical. All 132 tests pass.

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[Malcolmnixon]

@copilot Sonar is reporting new issues and suggests using Assert.ContainsSingle - specifically try:

Assert.ContainsSingle(s => s.EndsWith("pattern"), collection);

[Copilot]

@copilot Sonar is reporting new issues and suggests using Assert.ContainsSingle - specifically try:

Assert.ContainsSingle(s => s.EndsWith("pattern"), collection);

...

Updated to use Assert.ContainsSingle(f => f.EndsWith("pattern"), collection) as suggested. This is cleaner and more idiomatic for MSTest v4. Commit: cce429b