toBeBool() ->and(0)->not->toBeBool(); }); test('failures', function (): void { expect()->toBeBool(); })->throws(ExpectationFailedException::class); test('failures with custom message', function (): void { expect()->toBeBool('oh no!'); })->throws(ExpectationFailedException::class, 'oh no!'); test('not failures', function (): void { expect(false)->not->toBeBool(); })->throws(ExpectationFailedException::class);