Rust Unit Tests in warp

Scope

• This skill focuses on crate-level unit tests.
• Favor incremental, well-scoped tests that exercise a single function or behavior per case.

Where unit tests live

• Put unit tests in separate files named ${filename}_tests.rs or mod_test.rs.
• Include the test module at the end of the corresponding source file:

#[cfg(test)]
#[path = "filename_tests.rs"] // or "mod_test.rs"
mod tests;

Writing good tests

• Use descriptive names: fn parses_utf8_sequence_when_valid().
• Prefer assert_eq!/assert_ne! over assert! for clearer diffs.