roc/roc_std/tests/test_roc_std.rs

#[macro_use]
extern crate pretty_assertions;
// #[macro_use]
// extern crate indoc;
extern crate quickcheck;
extern crate roc_std;

#[cfg(test)]
mod test_roc_std {
    use roc_std::RocResult;

    #[test]
    fn roc_result_to_rust_result() {
        let greeting = "Hello, World!";
        let roc_result: RocResult<String, ()> = RocResult::ok(greeting.into());

        match roc_result.into() {
            Ok(answer) => {
                assert_eq!(answer.as_str(), greeting);
            }
            Err(()) => {
                panic!("Received an Err when Ok was expected.")
            }
        }
    }

    #[test]
    fn roc_result_is_ok() {
        let greeting = "Hello, World!";
        let roc_result: RocResult<String, ()> = RocResult::ok(greeting.into());

        assert!(roc_result.is_ok());
        assert!(!roc_result.is_err());
    }

    #[test]
    fn roc_result_is_err() {
        let greeting = "Hello, World!";
        let roc_result: RocResult<(), String> = RocResult::err(greeting.into());

        assert!(!roc_result.is_ok());
        assert!(roc_result.is_err());
    }
}