test: reopen mnode unitest

source/dnode/mnode/impl/test/CMakeLists.txt

 enable_testing()
 
-#add_subdirectory(user)
 add_subdirectory(acct)
-#add_subdirectory(trans)
-#add_subdirectory(qnode)
-#add_subdirectory(snode)
 add_subdirectory(bnode)
-#add_subdirectory(show)
-#add_subdirectory(profile)
-#add_subdirectory(dnode)
-#add_subdirectory(mnode)
-#add_subdirectory(db)
-#add_subdirectory(stb)
-#add_subdirectory(sma)
-#add_subdirectory(func)
-#add_subdirectory(topic)
+add_subdirectory(db)
+add_subdirectory(dnode)
+add_subdirectory(func)
+add_subdirectory(mnode)
+add_subdirectory(profile)
+add_subdirectory(qnode)
+add_subdirectory(show)
+add_subdirectory(sma)
+add_subdirectory(snode)
+add_subdirectory(stb)
+add_subdirectory(topic)
+add_subdirectory(trans)
+add_subdirectory(user)

source/dnode/mnode/impl/test/show/show.cpp

@@ -34,9 +34,9 @@ TEST_F(MndTestShow, 01_ShowMsg_InvalidMsgMax) {
   tSerializeSShowReq(pReq, contLen, &showReq);
   tFreeSShowReq(&showReq);
 
-  SRpcMsg* pRsp = test.SendReq(TDMT_MND_SHOW, pReq, contLen);
+  SRpcMsg* pRsp = test.SendReq(TDMT_MND_SYSTABLE_RETRIEVE, pReq, contLen);
   ASSERT_NE(pRsp, nullptr);
-  ASSERT_EQ(pRsp->code, TSDB_CODE_MND_INVALID_MSG_TYPE);
+  ASSERT_EQ(pRsp->code, TSDB_CODE_INVALID_MSG);
 }
 
 TEST_F(MndTestShow, 02_ShowMsg_InvalidMsgStart) {
@@ -48,9 +48,9 @@ TEST_F(MndTestShow, 02_ShowMsg_InvalidMsgStart) {
   tSerializeSShowReq(pReq, contLen, &showReq);
   tFreeSShowReq(&showReq);
 
-  SRpcMsg* pRsp = test.SendReq(TDMT_MND_SHOW, pReq, contLen);
+  SRpcMsg* pRsp = test.SendReq(TDMT_MND_SYSTABLE_RETRIEVE, pReq, contLen);
   ASSERT_NE(pRsp, nullptr);
-  ASSERT_EQ(pRsp->code, TSDB_CODE_MND_INVALID_MSG_TYPE);
+  ASSERT_EQ(pRsp->code, TSDB_CODE_INVALID_MSG);
 }
 
 TEST_F(MndTestShow, 03_ShowMsg_Conn) {