testing

name	testing
description	Guide for Rust testing and Cargo usage. Use when writing unit or integration tests, configuring Cargo.toml, or running cargo commands.

Rust Testing and Cargo

Unit tests, integration tests, Cargo.toml configuration, and common commands.

When to Use This Skill

Activate when:

• Writing unit tests with #[test] and #[cfg(test)]
• Setting up integration tests in tests/ directory
• Configuring Cargo.toml dependencies and profiles
• Running cargo test, build, clippy, or fmt
• Using #[should_panic] or Result-returning tests

For test patterns, Cargo.toml configuration, and command reference, see references/testing.md.

Anti-fabrication

This skill follows core:anti-fabrication. Every claim about cargo test/cargo command behavior and Cargo.toml configuration is verified against the Cargo Book cited in sources.md — not inferred from generic familiarity with the tool. Before asserting a Cargo command or flag this skill and its references do not cover, check cargo help or the installed Cargo version's documentation rather than guessing.