throw exception

Author: Manjusha.S

src/Magento/FunctionalTestingFramework/StaticCheck/ActionGroupArgumentsCheck.php

@@ -14,6 +14,8 @@
 use Magento\FunctionalTestingFramework\Util\Script\ScriptUtil;
 use Symfony\Component\Finder\SplFileInfo;
 use DOMElement;
+use Magento\FunctionalTestingFramework\Exceptions\TestFrameworkException;
+
 
 /**
  * Class ActionGroupArgumentsCheck
@@ -24,6 +26,7 @@ class ActionGroupArgumentsCheck implements StaticCheckInterface
     const ACTIONGROUP_NAME_REGEX_PATTERN = '/<actionGroup name=["\']([^\'"]*)/';
     const ERROR_LOG_FILENAME = 'mftf-arguments-checks';
     const ERROR_LOG_MESSAGE = 'MFTF Action Group Unused Arguments Check';
+    const STEP_KEY_REGEX_PATTERN = '/stepKey=["\']([^\'"]*)/';
 
     /**
      * Array containing all errors found after running the execute() function.
@@ -100,6 +103,15 @@ private function findErrorsInFileSet($files)
         foreach ($files as $filePath) {
             $actionGroupToArguments = [];
             $contents = $filePath->getContents();
+            preg_match_all(self::STEP_KEY_REGEX_PATTERN, $contents, $actionGroupReferences);
+            foreach ($actionGroupReferences[0] as $actionGroupReferencesData) {
+              $actionGroupReferencesDataArray[] = trim(str_replace(['stepKey','='],[""],$actionGroupReferencesData)).'"';
+            }
+            $duplicateStepKeys = array_unique( array_diff_assoc( $actionGroupReferencesDataArray, array_unique( $actionGroupReferencesDataArray ) ) );
+            unset( $actionGroupReferencesDataArray);
+            if (isset($duplicateStepKeys) && count($duplicateStepKeys) > 0) {
+              throw new TestFrameworkException('Action group has duplicate step keys');
+            }
             /** @var DOMElement $actionGroup */
             $actionGroup = $this->getActionGroupDomElement($contents);
             $arguments = $this->extractActionGroupArguments($actionGroup);