expect(nil).toAlways(equal(0)) incorrectly succeeds

[defagos]

• I have read CONTRIBUTING and have done my best to follow them.

What did you do?

Consider the following expectation:

func testExpectNilToAlwaysEqualZero() {
    expect(nil).toAlways(equal(0))
}

You would expect a test failure but the test actually succeeds.

The issue is likely associated with polling since the following expectation fails as expected:

func testExpectNilToEqualZero() {
    expect(nil).to(equal(0))
}

What did you expect to happen?

The expectation in testExpectNilToAlwaysEqualZero() above must fail.

What actually happened instead?

The expectation in testExpectNilToAlwaysEqualZero() above incorrectly succeeds.

Environment

• Nimble: 13.2.0
• Xcode Version: 15.2.0
• Swift Version: 5.9.2
• Swift Package Manager 5.9.0

[younata]

Thanks for identifying this!

[younata]

After looking into this more, this type of issue also applies to toNever. Lovely.

[defagos]

Thanks for your answer.

As a temporary workaround it is possible to force-unwrap potentially nullable values in related expectations so that mismatches at least do not get unnoticed:

expect(somePotentiallyNilValue!).toAlways(equal(1234))

[younata]

This is now fixed in Nimble 13.2.1.

[defagos]

Thank you very much for the quick fix, really appreciated!