dust/dust-lang/tests/math/subtract_errors.rs

use dust_lang::*;

#[test]
fn subtract_boolean_left() {
    let source = "true - 1";

    assert_eq!(
        compile(source),
        Err(DustError::Compile {
            error: CompileError::CannotSubtractType {
                argument_type: Type::Boolean,
                position: Span(0, 4)
            },
            source,
        })
    );
}

#[test]
fn subtract_boolean_right() {
    let source = "1 - true";

    assert_eq!(
        compile(source),
        Err(DustError::Compile {
            error: CompileError::CannotSubtractType {
                argument_type: Type::Boolean,
                position: Span(4, 8)
            },
            source,
        })
    );
}

#[test]
fn subtract_character_left() {
    let source = "'a' - 1";

    assert_eq!(
        compile(source),
        Err(DustError::Compile {
            error: CompileError::CannotSubtractType {
                argument_type: Type::Character,
                position: Span(0, 3)
            },
            source,
        })
    );
}

#[test]
fn subtract_character_right() {
    let source = "1 - 'a'";

    assert_eq!(
        compile(source),
        Err(DustError::Compile {
            error: CompileError::CannotSubtractType {
                argument_type: Type::Character,
                position: Span(4, 7)
            },
            source,
        })
    );
}

#[test]
fn subtract_float_and_character() {
    let source = "1.0 - 'a'";

    assert_eq!(
        compile(source),
        Err(DustError::Compile {
            error: CompileError::CannotSubtractType {
                argument_type: Type::Character,
                position: Span(6, 9)
            },
            source,
        })
    );
}

#[test]
fn subtract_float_and_integer() {
    let source = "1.0 - 1";

    assert_eq!(
        compile(source),
        Err(DustError::Compile {
            error: CompileError::CannotSubtractArguments {
                left_type: Type::Float,
                right_type: Type::Integer,
                position: Span(0, 7)
            },
            source,
        })
    );
}

#[test]
fn subtract_function_left() {
    let source = "fn(){} - 1";

    assert_eq!(
        compile(source),
        Err(DustError::Compile {
            error: CompileError::CannotSubtractType {
                argument_type: Type::function(FunctionType {
                    type_parameters: None,
                    value_parameters: None,
                    return_type: Type::None
                }),
                position: Span(0, 6)
            },
            source,
        })
    );
}

#[test]
fn subtract_function_right() {
    let source = "1 - fn(){}";

    assert_eq!(
        compile(source),
        Err(DustError::Compile {
            error: CompileError::CannotSubtractType {
                argument_type: Type::function(FunctionType {
                    type_parameters: None,
                    value_parameters: None,
                    return_type: Type::None
                }),
                position: Span(4, 10)
            },
            source,
        })
    );
}

#[test]
fn subtract_integer_and_float() {
    let source = "1 - 1.0";

    assert_eq!(
        compile(source),
        Err(DustError::Compile {
            error: CompileError::CannotSubtractArguments {
                left_type: Type::Integer,
                right_type: Type::Float,
                position: Span(0, 7)
            },
            source,
        })
    );
}

#[test]
fn subtract_list_left() {
    let source = "[1, 2] - 1";

    assert_eq!(
        compile(source),
        Err(DustError::Compile {
            error: CompileError::CannotSubtractType {
                argument_type: Type::List(Box::new(Type::Integer)),
                position: Span(0, 6)
            },
            source,
        })
    );
}

#[test]
fn subtract_list_right() {
    let source = "1 - [1, 2]";

    assert_eq!(
        compile(source),
        Err(DustError::Compile {
            error: CompileError::CannotSubtractType {
                argument_type: Type::List(Box::new(Type::Integer)),
                position: Span(4, 10)
            },
            source,
        })
    );
}

// #[test]
// fn add_range_left() {
//     todo!("Add ranges")
// }

// #[test]
// fn add_range_right() {
//     todo!("Add ranges")
// }

#[test]
fn subtract_string_left() {
    let source = "\"hello\" - 1";

    assert_eq!(
        compile(source),
        Err(DustError::Compile {
            error: CompileError::CannotSubtractType {
                argument_type: Type::String,
                position: Span(0, 7)
            },
            source,
        })
    );
}

#[test]
fn subtract_string_right() {
    let source = "1 - \"hello\"";

    assert_eq!(
        compile(source),
        Err(DustError::Compile {
            error: CompileError::CannotSubtractType {
                argument_type: Type::String,
                position: Span(4, 11)
            },
            source,
        })
    );
}