diff --git a/qqq-backend-core/src/test/java/com/kingsrook/qqq/backend/core/modules/backend/QBackendModuleInterfaceTest.java b/qqq-backend-core/src/test/java/com/kingsrook/qqq/backend/core/modules/backend/QBackendModuleInterfaceTest.java
new file mode 100644
index 00000000..73337edc
--- /dev/null
+++ b/qqq-backend-core/src/test/java/com/kingsrook/qqq/backend/core/modules/backend/QBackendModuleInterfaceTest.java
@@ -0,0 +1,110 @@
+/*
+ * QQQ - Low-code Application Framework for Engineers.
+ * Copyright (C) 2021-2022.  Kingsrook, LLC
+ * 651 N Broad St Ste 205 # 6917 | Middletown DE 19709 | United States
+ * contact@kingsrook.com
+ * https://github.com/Kingsrook/
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package com.kingsrook.qqq.backend.core.modules.backend;
+
+
+import com.kingsrook.qqq.backend.core.model.metadata.QBackendMetaData;
+import com.kingsrook.qqq.backend.core.model.metadata.tables.QTableBackendDetails;
+import org.junit.jupiter.api.Test;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.fail;
+
+
+/*******************************************************************************
+ ** Unit test for QBackendModuleInterface
+ **
+ *******************************************************************************/
+class QBackendModuleInterfaceTest
+{
+   /*******************************************************************************
+    **
+    *******************************************************************************/
+   @Test
+   public void test()
+   {
+      TestClass tc = new TestClass();
+      Class     c  = tc.getTableBackendDetailsClass();
+      assertEquals(c.getName(), QTableBackendDetails.class.getName(), "classname should be QTableBackendDetails");
+
+      try
+      {
+         tc.getCountInterface();
+      }
+      catch(IllegalStateException iae)
+      {
+         try
+         {
+            tc.getQueryInterface();
+         }
+         catch(IllegalStateException iae2)
+         {
+            try
+            {
+               tc.getInsertInterface();
+            }
+            catch(IllegalStateException iae3)
+            {
+               try
+               {
+                  tc.getUpdateInterface();
+               }
+               catch(IllegalStateException iae4)
+               {
+                  try
+                  {
+                     tc.getDeleteInterface();
+                  }
+                  catch(IllegalStateException iae5)
+                  {
+                     return;
+                  }
+               }
+            }
+         }
+      }
+
+      fail("should not get here...");
+   }
+
+
+
+   /*******************************************************************************
+    **
+    *******************************************************************************/
+   private class TestClass implements QBackendModuleInterface
+   {
+      @Override
+      public String getBackendType()
+      {
+         return null;
+      }
+
+
+
+      @Override
+      public Class<? extends QBackendMetaData> getBackendMetaDataClass()
+      {
+         return null;
+      }
+   }
+
+}