foo = 'bar'; expect($instance->foo)->toBe('bar'); expect($instance->undefined)->toBeNull(); }); it('can methodolically set & get an attribute', function () { $instance = new class() { use HasAttributes; }; $instance->setAttribute('foo', 'bar'); expect($instance->getAttribute('foo'))->toBe('bar'); expect($instance->getAttribute('undefined'))->toBeNull(); }); it('can set & get all attributes', function () { $instance = new class() { use HasAttributes; }; $instance->setAttributes(['foo' => 'bar']); expect($results = $instance->getAttributes())->toBeArray(); expect($results['foo'])->toBe('bar'); });