Macro collect_fails 

macro_rules! collect_fails {
    ($input:ty, $expected:ty, $result:ty, $cases:expr, $test:expr, $assert:expr) => { ... };
    ($input:ty, $result:ty, $cases:expr, $test:expr) => { ... };
}

Executes a series of test-cases, collecting error information.

Usage

• An iterator of input and expected output data is required.
• By default compares the result and expected result for equality, a custom assertion function may be provided as sixth parameter.
• While debugging, panics on assertion failure, otherwise collects all failed data in a Vec

Examples

Basic usage:

#[test]
fn test_parse_fragment_any() {
    report_fails(collect_fails!(
        // input type
        &str,
        // output type
        IResult<&str, Fragment, ()>,
        // test cases in format (input, expected)  
        vec![
            ("/", Ok(("", Fragment::Separator))),
            ("///", Ok(("", Fragment::Separator))),
            ("path/to/file", Ok(("/to/file", Fragment::Plain("path"))))
        ].into_iter(),
        // test function
        parse_fragment
    ));
}

Custom assertion:

fn test_in_range() {
    report_fails(collect_fails!(
        usize,
        std::ops::Range<usize>,
        usize,
        vec![(2, 1..4), (3, 4..6), (0, 1..3)].into_iter(),
        |input| input + 2,
        |output: &usize, expected: &Range<usize>| expected.contains(output)
    ));
}