MAGETWO-31968: PHP Fatal error: Call to a member function addStreamLog() on a non-object

 - Fixed unit test

Author: Bibu Mathew

dev/tests/unit/testsuite/Magento/Framework/Image/Adapter/AbstractTest.php

@@ -25,6 +25,11 @@ class AbstractTest extends \PHPUnit_Framework_TestCase
      */
     protected $filesystemMock;
 
+    /**
+     * @var \PHPUnit_Framework_MockObject_MockObject |\Psr\Log\LoggerInterface
+     */
+    protected $loggerMock;
+
     protected function setUp()
     {
         $this->directoryWriteMock = $this->getMock(
@@ -48,10 +53,11 @@ protected function setUp()
         )->will(
             $this->returnValue($this->directoryWriteMock)
         );
+        $this->loggerMock = $this->getMockBuilder( 'Psr\Log\LoggerInterface')->getMock();
 
         $this->_model = $this->getMockForAbstractClass(
             'Magento\Framework\Image\Adapter\AbstractAdapter',
-            [$this->filesystemMock]
+            [$this->filesystemMock,$this->loggerMock]
         );
     }
 
@@ -60,6 +66,7 @@ protected function tearDown()
         $this->directoryWriteMock = null;
         $this->_model = null;
         $this->filesystemMock = null;
+        $this->loggerMock = null;
     }
 
     /**