Improve compiler test quality: consolidate error tests, add edge cases and concurrency validation#14650

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pelikhan merged 3 commits intomainfrom

copilot/improve-test-quality-compiler-test

Feb 9, 2026

Commits on Feb 9, 2026

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Improve test quality: consolidate error tests, add edge cases, expand internal function tests, add concurrent/performance tests

Copilot
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pelikhan
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Fix linter error: use lowercase for error strings

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pelikhan
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