protected function getAssetCacheManagerMock()
{
$assetCacheManager = $this->getMockBuilder(AssetCacheManager::class)->disableOriginalConstructor()->getMock();
$assetCacheManager->expects($this->any())->method('setCache')->will($this->returnCallback(function ($path, $asset) {
return $asset;
}));
return $assetCacheManager;
}