[ ['label' => 'button-A'], ['label' => 'button-B', 'visible' => true], ['label' => 'button-C', 'visible' => false], Button::widget(['label' => 'button-D']), ], ]); static::assertContains('button-A', $out); static::assertContains('button-B', $out); static::assertContains('button-B', $out); static::assertNotContains('button-C', $out); } }