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Repository instructions, without format guesswork.

Verified templates for AGENTS.md, Claude, Gemini CLI, and GitHub Copilot.

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External repositorygithub/awesome-copilot

Testing, fixtures & quality gates

JUnit 5 Assertions Best Practices

Standardizes JUnit 5 (Jupiter) assertions with best practices for performance, readability, and modern features (5.8+). Covers Supplier messages, assertAll, assertThrowsExactly, and performance-critical timeouts.