MQE-2495: config parallel by number of groups

Author: jilu1

dev/tests/util/MftfTestCase.php

@@ -6,6 +6,8 @@
 namespace tests\util;
 
 use Magento\FunctionalTestingFramework\ObjectManager;
+use Magento\FunctionalTestingFramework\Suite\Handlers\SuiteObjectHandler;
+use Magento\FunctionalTestingFramework\Suite\SuiteGenerator;
 use Magento\FunctionalTestingFramework\Test\Handlers\TestObjectHandler;
 use Magento\FunctionalTestingFramework\Util\TestGenerator;
 use PHPUnit\Framework\TestCase;
@@ -118,5 +120,15 @@ private function clearHandler()
         $property = new \ReflectionProperty(ObjectManager::class, 'instance');
         $property->setAccessible(true);
         $property->setValue(null);
+
+        // clear suite generator to force recollection of test data
+        $property = new \ReflectionProperty(SuiteGenerator::class, 'instance');
+        $property->setAccessible(true);
+        $property->setValue(null);
+
+        // clear suite object handler to force recollection of test data
+        $property = new \ReflectionProperty(SuiteObjectHandler::class, 'instance');
+        $property->setAccessible(true);
+        $property->setValue(null);
     }
 }

dev/tests/verification/Tests/SuiteGenerationTest.php

@@ -490,6 +490,10 @@ public function tearDown(): void
         $fileSystem->remove(
             self::CONFIG_YML_FILE
         );
+
+        $property = new \ReflectionProperty(DirSetupUtil::class, "DIR_CONTEXT");
+        $property->setAccessible(true);
+        $property->setValue([]);
     }
 
     /**

src/Magento/FunctionalTestingFramework/Util/Sorter/ParallelGroupSorter.php

@@ -122,9 +122,9 @@ public function getTestsGroupedByFixedGroupCount($suiteConfiguration, $testNameT
     /**
      * Return suite's group counts from a group total
      *
-     * @param $suiteNameToSize
-     * @param $testNameToSize
-     * @param $groupTotal
+     * @param array   $suiteNameToSize
+     * @param array   $testNameToSize
+     * @param integer $groupTotal
      * @return array
      */
     private function getSuiteGroupCounts($suiteNameToSize, $testNameToSize, $groupTotal)