use subject_source::string::parse::*;
use subject_source::vec::compute::*;

#[test]
pub fn parse_add() {
    assert_eq!("+".parse(), Ok(Operation::Binary(Binary::Add)));
}

#[test]
pub fn parse_sub() {
    assert_eq!("-".parse(), Ok(Operation::Binary(Binary::Sub)));
}

#[test]
pub fn parse_mul() {
    assert_eq!("*".parse(), Ok(Operation::Binary(Binary::Mul)));
}

#[test]
pub fn parse_div() {
    assert_eq!("/".parse(), Ok(Operation::Binary(Binary::Div)));
}

#[test]
pub fn parse_number() {
    assert_eq!("3.14".parse(), Ok(Operation::Push(3.14)));
}

#[test]
pub fn parse_number_negative() {
    assert_eq!("-3.14".parse(), Ok(Operation::Push(-3.14)));
}

#[test]
pub fn parse_bad_number() {
    match "3.14aaa".parse::<Operation>() {
        Err(ParseOperationError::Number(_)) => {}
        _ => panic!("'3.14aaa' should raise a ParseOperationError::Number error"),
    }
}

#[test]
pub fn parse_bad_operation() {
    match "blabla".parse::<Operation>() {
        Err(ParseOperationError::UnknownOperation) => {}
        _ => panic!("'blabla' should raise a ParseOperationError::UnknownOperation error"),
    }
}