try with initialization on every class

Author: michaelzhao820

src/test/java/org/ogo/test/datastructuretests/DataStructureTest.java

@@ -6,23 +6,18 @@
 import org.ogo.client.OGO;
 
 public abstract class DataStructureTest {
-    private static boolean queryEngineInitialized = false;
 
     /**
      * @since 0.1.0
      */
     @BeforeAll
     public static void initQueryEngine() throws InterruptedException, IOException, NotBoundException {
-        if (queryEngineInitialized) {
-            return;
-        }
         Thread.sleep(5000);
         OGO.init();
         OGO.setWhiteList("ogo/test", "java/util");
         OGO.clearDatabase = true;
         OGO.forceGC = true;
         OGO.followRoot = true;
         OGO.whitelist = true;
-        queryEngineInitialized = true;
     }
 }