shoulds

shoulds is a Shouldly-inspired test assertion library for testing Rust.

Current assertion functions include:

• should_be
• should_not_be
• should_be_greater_than
• should_be_greater_than_or_equal_to
• should_be_less_than
• should_be_less_than_or_equal_to
• should_be_false
• should_be_true
• should_be_error
• should_be_ok

I'll add more assertions along the way as the need arises.

Install:

Cargo.toml:

[dependencies.shoulds]
git = "https://github.com/tarrball/shoulds"
branch = "main"

And Enjoy:

src/lib.rs:

fn add(a: i32, b: i32) -> i32 {
    a + b
}

fn concat(a: &String, b: &String) -> String {
    format!("{}{}", a, b)
}

#[cfg(test)]
mod tests {
    use crate::{add, concat};
    use shoulds::*;

    #[test]
    fn add_adds_params_together() {
        let result = add(40, 2);

        result.should_be(42)
    }

    #[test]
    fn concat_concats_strings_together() {
        let result = concat(&"Hello, ".to_string(), &"world!".to_string());

        result.should_be("Hello, world!".to_string());
    }
}