toBeList() ->and(['a' => 1, 'b' => 2, 'c' => 3])->not->toBeList() ->and('1, 2, 3')->not->toBeList(); }); test('failures', function (): void { expect()->toBeList(); })->throws(ExpectationFailedException::class); test('failures with custom message', function (): void { expect()->toBeList('oh no!'); })->throws(ExpectationFailedException::class, 'oh no!'); test('not failures', function (): void { expect(['a', 'b', 'c'])->not->toBeList(); })->throws(ExpectationFailedException::class);