#assertions #failure #fail #expect #assert #gtest

soft-test-failures

Allow multiple assertions to fail in one test

3 unstable releases

new 0.2.1 Sep 26, 2024
0.2.0 May 23, 2019
0.1.0 Nov 7, 2018

#313 in Testing

Download history 156/week @ 2024-09-23

156 downloads per month

MIT/Apache

5KB
58 lines

Soft-Test-Failures

Multiple test failures, any one of which will result in a failed test. Like gtest's EXPECT_* rather than ASSERT_*.

#[test]
fn expect_failures() {
    let x = 4;
    let y = "is not";
    let z = 5;
    expect!(2 + 2 == 5, "{} surely {} {}", x, y, z);
    expect!(1 + 1 == 2);
    expect!(3 - 7 == -4);
    expect!(3 - 7 == -3);
    let_fail!();
}

running 1 test
test expect_failures ... FAILED

failures:

---- expect_failures stdout ----
thread 'expect_failures' panicked at '`expect` test failed with 2 failed assertions:
1: 4 surely is not 5
2: Expected 3 - 7 == -3
', src/lib.rs:48:5
note: Run with `RUST_BACKTRACE=1` for a backtrace.


lib.rs:

This crate trackes assertions during the execution of a test, delaying panicks until the end of execution. This ensures that if two assertions were to fail, the first does not clobber the second. This is most useful when writing large tests with many assertions that may begin to fail simultaneously, as you can pinpoint exactly which ones failed.

Usage

Replace your normal assert!() assertions with expect!() from this crate. At the end of your test, call let_fail!()

#[test]
fn expect_failures() {
    let x = 4;
    let y = "is not";
    let z = 5;
    expect!(2 + 2 == 5, "{} surely {} {}", x, y, z);
    expect!(1 + 1 == 2);
    expect!(3 - 7 == -4);
    expect!(3 - 7 == -3);
    let_fail!();
}

No runtime deps