/**
* Use this method only with database isolation
*
* @return \Magento\Theme\Model\Theme
*/
protected function _getTestTheme()
{
$theme = $this->_theme->getCollection()->getThemeByFullPath(implode(\Magento\Framework\View\Design\ThemeInterface::PATH_SEPARATOR, ['frontend', 'Test/test_theme']));
$this->assertNotEmpty($theme->getId());
return $theme;
}
