toBeDirectory(); }); test('failures', function () { expect('/random/path/whatever')->toBeDirectory(); })->throws(ExpectationFailedException::class); test('failures with custom message', function () { expect('/random/path/whatever')->toBeDirectory('oh no!'); })->throws(ExpectationFailedException::class, 'oh no!'); test('not failures', function () { expect('.')->not->toBeDirectory(); })->throws(ExpectationFailedException::class);