//! SDK plugin linked to a WASI C function.
unsafe extern "C" {
    fn c_add(a: i32, b: i32) -> i32;
}
fn add(a: i32, b: i32) -> i32 {
    unsafe { c_add(a, b) }
}
struct Plugin;
#[sausage_plugin::rpc]
impl Plugin {
    /// Add two fixed numbers through C.
    fn sum(&self) -> sausage_plugin::Result<i32> {
        Ok(add(2, 3))
    }
}
fn main() {
    sausage_plugin::run(Plugin);
}
#[cfg(test)]
mod tests {
    #[test]
    fn c_code_runs_under_wasi() {
        assert_eq!(super::add(2, 3), 5);
    }
}