/**
* @covers \Magento\Framework\View\Design\Theme\Image::removePreviewImage
*/
public function testRemoveEmptyPreviewImage()
{
$this->_themeMock->setData($this->_getThemeSampleData());
$this->_themeMock->setData('preview_image', null);
$this->_filesystemMock->expects($this->never())->method('delete');
$this->_model->removePreviewImage();
$this->assertNull($this->_themeMock->getData('preview_image'));
}
