[12.x] assertThrowsNothing

[gdebrauwer]

Sometimes I assert multiple situations in a single test, for example, different situations in which an exception should be thrown or not. The different situations where an exception is thrown are easy to assert thanks to the assertThrows method. This PR introduces the inverse method assertThrowsNothing method so you can easily and explicitly assert situations where you want to be sure that no exception is thrown.

$this->assertThrowsNothing(function () {
    throw new Exception(); // fails if an exception is thrown
});

[cosmastech]

Would love to see this and the assertThrown PR get merged.

[AhmedAlaa4611]

Has it been documented yet?

[taylorotwell]

@AhmedAlaa4611 just did. 👍