MAGETWO-59053: [Github] Merge CSS Files causes entire site to load Extremely Slow #4321

Author: Karpenko, Oleksandr

lib/internal/Magento/Framework/View/Test/Unit/Asset/MergeStrategy/ChecksumTest.php

@@ -130,6 +130,10 @@ private function getAssetsToMerge()
     {
         $one = $this->getMock(\Magento\Framework\View\Asset\File::class, [], [], '', false);
         $two = $this->getMock(\Magento\Framework\View\Asset\File::class, [], [], '', false);
+        $one->expects($this->never())
+            ->method('getSourceFile');
+        $two->expects($this->never())
+            ->method('getSourceFile');
 
         $this->assetSource->expects($this->exactly(2))
             ->method('findSource')