Example of a macro to parametrized test

parametrized.rs

#[cfg(test)]
mod tests {
    #[macro_export]
    macro_rules! parametrized {
    ($($name:ident: $value:expr,)*) => {
        $(
           #[test]
           fn $name() {
            let (input, expected) = $value;
            assert_eq!(expected, input);
           }
        )*
    }

}

    parametrized! {
        one_plus_one_will_be_two: (1+1, 2),
        two_plus_one_will_be_three: (2+1, 3),

    }
}