Attribute Macro ntest_test_cases::test_case

#[test_case]

Test cases can be used to have multiple inputs for a given function. With the test_case attribute multiple tests will be generated using the Procedural Macros capabilities of rust.

The function input can be of type int, bool, or str.

Please note that test functions can only contain alphanumeric characters and '' signs. Special characters will be escaped using the '' sign.

WARNING! It is currently not possible to have negative numbers as macro input. For example this #[test_case(-13)] will not work.

Examples

Example with a single argument

#[test_case(13)]
#[test_case(42)]
fn one_arg(x: u32) {
    assert!(x == 13 || x == 42)
}

Example with multiple arguments:

#[test_case(true, "true", 1)]
fn test_mix(x: bool, y: &str, z: u16) {
    assert!(x);
    assert_eq!(y, "true");
    assert_eq!(z, 1);
}

Example with test_name attribute:

#[test_case(42, test_name="my_fancy_test")]
fn with_name(x: u32) {
    assert_eq!(x, 42)
}