MQE-1021: Empty Action StepKey Attribute Issues

- Made error message slightly more specific

Author: aljcalandra

dev/tests/unit/Magento/FunctionalTestFramework/Test/Util/ActionGroupObjectExtractorTest.php

@@ -28,7 +28,9 @@ public function setUp()
      */
     public function testEmptyStepKey()
     {
-        $this->expectExceptionMessage("StepKeys cannot be empty.	Action='sampleAction' in filename.xml");
+        $this->expectExceptionMessage(
+            "StepKeys cannot be empty.	Action='sampleAction' in Action Group filename.xml"
+        );
         $this->testActionGroupObjectExtractor->extractActionGroup($this->createBasicActionObjectArray(""));
     }
 

src/Magento/FunctionalTestingFramework/Test/Util/ActionGroupObjectExtractor.php

@@ -65,7 +65,7 @@ public function extractActionGroup($actionGroupData)
         try {
             $actions = $this->actionObjectExtractor->extractActions($actionData);
         } catch (\Exception $error) {
-            throw new XmlException($error->getMessage() . " in " . $actionGroupData[self::FILENAME]);
+            throw new XmlException($error->getMessage() . " in Action Group " . $actionGroupData[self::FILENAME]);
         }
 
         if (array_key_exists(self::ACTION_GROUP_ARGUMENTS, $actionGroupData)) {