MAGETWO-58692: Refactor Module_Webapi, Module_Elasticsearch Refactoring integration tests

Author: Joan He

dev/tests/integration/testsuite/Magento/Webapi/Model/ServiceMetadataTest.php

@@ -58,7 +58,7 @@ public function testGetServiceMetadata()
                                 ]
                             ],
                             'throws' => [
-                                '\Magento\Framework\Exception\LocalizedException'
+                                \Magento\Framework\Exception\LocalizedException::class
                             ]
                         ]
                     ]
@@ -107,7 +107,7 @@ public function testGetRouteMetadata()
                                 ]
                             ],
                             'throws' => [
-                                '\Magento\Framework\Exception\LocalizedException'
+                                \Magento\Framework\Exception\LocalizedException::class
                             ]
                         ]
                     ]

dev/tests/integration/testsuite/Magento/Webapi/Model/Soap/ConfigTest.php

@@ -62,7 +62,7 @@ public function testGetRequestedSoapServices()
                                     ]
                                 ],
                                 'throws' => [
-                                    '\Magento\Framework\Exception\LocalizedException'
+                                    \Magento\Framework\Exception\LocalizedException::class
                                 ]
                             ]
                         ]