diff --git a/dtmgrpc/type_test.go b/dtmgrpc/type_test.go
index d6a80fc..0c3fb98 100644
--- a/dtmgrpc/type_test.go
+++ b/dtmgrpc/type_test.go
@@ -9,4 +9,7 @@ import (
 func TestType(t *testing.T) {
 	_, err := BarrierFromGrpc(&BusiRequest{Info: &BranchInfo{}})
 	assert.Error(t, err)
+
+	_, err = TccFromRequest(&BusiRequest{Info: &BranchInfo{}})
+	assert.Error(t, err)
 }
diff --git a/test/grpc_tcc_test.go b/test/grpc_tcc_test.go
index 41f6545..5162d0a 100644
--- a/test/grpc_tcc_test.go
+++ b/test/grpc_tcc_test.go
@@ -11,9 +11,9 @@ import (
 )
 
 func TestGrpcTcc(t *testing.T) {
-	// tccGrpcType(t)
-	// tccGrpcNormal(t)
-	// tccGrpcNested(t)
+	tccGrpcType(t)
+	tccGrpcNormal(t)
+	tccGrpcNested(t)
 	tccGrpcRollback(t)
 }