/** * @covers \Magento\Framework\View\Design\Theme\Customization::getFilesByType */ public function testGetFilesByType() { $type = 'sample-type'; $this->fileProvider->expects($this->once())->method('getItems')->with($this->theme, ['file_type' => $type])->will($this->returnValue([])); $this->assertEquals([], $this->model->getFilesByType($type)); }