public function testGetPreviewImagePath()
{
$previewImage = 'preview.jpg';
$expectedPath = 'theme/preview/preview.jpg';
/** @var $theme \Magento\Theme\Model\Theme|\PHPUnit_Framework_MockObject_MockObject */
$theme = $this->getMock('Magento\\Theme\\Model\\Theme', ['getPreviewImage', 'isPhysical', '__wakeup'], [], '', false);
$this->mediaDirectory->expects($this->once())->method('getAbsolutePath')->with(PathInterface::PREVIEW_DIRECTORY_PATH . '/' . $previewImage)->willReturn($expectedPath);
$theme->expects($this->once())->method('getPreviewImage')->will($this->returnValue($previewImage));
$result = $this->model->getPreviewImagePath($theme);
$this->assertEquals($expectedPath, $result);
}
