MAGETWO-43646: Sort ordering for static files pre-processors

- Fixed tests

Author: Dell-

lib/internal/Magento/Framework/View/Asset/PreProcessor/AlternativeSource.php

@@ -103,8 +103,6 @@ public function process(Chain $chain)
             /** @var  FallbackContext $context */
             $context = $chain->getAsset()->getContext();
             $chain->setContent($this->processContent($path, $content, $module, $context));
-        } catch (\Exception $e) {
-            throw $e;
         } finally {
             $this->lockerProcess->unlockProcess();
         }

lib/internal/Magento/Framework/View/Test/Unit/Asset/PreProcessor/AlternativeSourceTest.php

@@ -82,9 +82,6 @@ protected function setUp()
 
     /**
      * Run test for process method (exception)
-     *
-     * @expectedException \UnexpectedValueException
-     * @expectedExceptionMessage "stdClass" has to implement the ContentProcessorInterface.
      */
     public function testProcessException()
     {
@@ -142,8 +139,11 @@ public function testProcessException()
             'lock',
             $alternatives
         );
-
-        $alternativeSource->process($this->getChainMockExpects('', 0));
+        try {
+            $alternativeSource->process($this->getChainMockExpects('', 0));
+        } catch (\UnexpectedValueException $e) {
+            self::assertInstanceOf('\UnexpectedValueException', $e);
+        }
     }
 
     /**