MAGETWO-31934: Extend Code Generator with Interface Generation Capabilities

Author: Alexander Paliarush

dev/tests/unit/testsuite/Magento/Framework/Code/Generator/InterfaceGeneratorTest.php

@@ -89,9 +89,10 @@ public function testGenerate($additionalMethodsData, $expectedException, $expect
         $expectedInterface = file_get_contents(
             __DIR__ . '/../_files/app/code/Magento/SomeModule/Model/SevenInterface.php'
         );
-        $this->assertEquals(
+
+        $this->assertStringEndsWith(
+            $generatedInterface,
             $expectedInterface,
-            "<?php\n" . $generatedInterface,
             "Interface was generated incorrectly."
         );
     }

dev/tests/unit/testsuite/Magento/Framework/Code/_files/app/code/Magento/SomeModule/Model/SevenInterface.php

@@ -1,4 +1,8 @@
 <?php
+/**
+ * Copyright © 2015 Magento. All rights reserved.
+ * See COPYING.txt for license details.
+ */
 namespace Magento\SomeModule\Model;
 
 use Magento\SomeModule\Model\Two\Test as TestTwo;