wasmweb-sample/math/src/lib.rs

#[allow(dead_code)]
pub fn sum(a: i32, b: i32) -> i32 {
    a + b
}

#[cfg(test)]
mod tests {
    use super::*;

    #[test]
    fn it_works() {
        assert_eq!(sum(10, 10), 20);
    }
}