src/test/ui/test-attr-non-associated-functions.rs

// #[test] attribute is not allowed on associated functions or methods
// reworded error message
// compile-flags:--test

struct A {}

impl A {
    #[test]
    fn new() -> A { //~ ERROR #[test] attribute is only allowed on non associated functions
        A {}
    }
}

#[test]
fn test() {
    let _ = A::new();
}

fn main() {}