MAGETWO-31999: oAuth issue [from github]

- Unit test for OauthInputException::getAggregatedErrorMessage

Author: anupdugar

dev/tests/unit/testsuite/Magento/Oauth/OauthInputExceptionTest.php

@@ -0,0 +1,28 @@
+<?php
+/**
+ * @copyright Copyright (c) 2014 X.commerce, Inc. (http://www.magentocommerce.com)
+ */
+namespace Magento\Framework\Oauth;
+
+class OauthInputExceptionTest extends \PHPUnit_Framework_TestCase
+{
+    public function testGetAggregatedErrorMessage()
+    {
+        $exception = new OauthInputException();
+        foreach (['field1', 'field2'] as $param) {
+            $exception->addError(OauthInputException::REQUIRED_FIELD, ['fieldName' => $param]);
+        }
+        $exception->addError('Message with period.', ['fieldName' => 'field3']);
+
+        $this->assertEquals(
+            'field1 is a required field, field2 is a required field, Message with period',
+            $exception->getAggregatedErrorMessage()
+        );
+    }
+
+    public function testGetAggregatedErrorMessageNoError()
+    {
+        $exception = new OauthInputException();
+        $this->assertEquals('', $exception->getAggregatedErrorMessage());
+    }
+}