Simple macro to assert on nom parser and nom_locate result

assert_nom_locate.rs

/// Perform assertion on a location span type.
macro_rules! assert_span {
    ($actual: expr, line = $value: expr) => {
        assert_eq!($actual.location_line(), $value);
    };
    ($actual: expr, fragment = $value: expr) => {
        assert_eq!(*$actual.fragment(), $value);
    };
    ($actual: expr, column = $value: expr) => {
        assert_eq!($actual.get_column(), $value);
    };
}

/// Perform assertion on a parser result.
///
/// ```
/// assert_lexed!(
///   lex_plus("+ remaining fragment".into()),
///   Token::Plus,
///   fragment = " remaining fragment",
///   line = 0,
///   column = 2
/// );
/// ```
macro_rules! assert_lexed {
    ($actual: expr, $expected_token: expr $(, $key: ident = $value: expr)*) => {
        assert_eq!($actual.unwrap().1, $expected_token);
        $(assert_span!($actual.unwrap().0, $key = $value);)*
    };
}