Testing in Rust

Testing in Rust is built-in and follows a straightforward structure. You write test functions annotated with #[test], and these functions assert expected behavior using macros like assert!, assert_eq!, or assert_ne!. Tests are run with cargo test. Example:

#[cfg(test)]
mod tests {
    #[test]
    fn it_works() {
        assert_eq!(2 + 2, 4);
    }
}

Rust supports unit tests for specific components and integration tests for overall functionality.

For more details, see the following articles.