toBeUlid(); })->throws(InvalidExpectationValue::class, 'Invalid expectation value type. Expected [string].'); test('pass', function () { expect('01ARZ3NDEKTSV4RRFFQ69G5FAV')->toBeUlid(); expect('01BX5ZZKBKACTAV9WEVGEMMVRE')->toBeUlid(); expect('7ZZZZZZZZZ0000000000000000')->toBeUlid(); }); test('failures', function () { expect('foo')->toBeUlid(); })->throws(ExpectationFailedException::class); test('failures with message', function () { expect('bar')->toBeUlid('oh no!'); })->throws(ExpectationFailedException::class, 'oh no!'); test('not failures', function () { expect('foo')->not->toBeUlid(); });