diff --git a/paddle/framework/net_op_test.cc b/paddle/framework/net_op_test.cc
index d61233a8b4071728bf63d7fde58b8301596a8da9..814f397c7da0b44256ba6e41476c229552ff2710 100644
--- a/paddle/framework/net_op_test.cc
+++ b/paddle/framework/net_op_test.cc
@@ -32,6 +32,7 @@ void AssertSameVectorWithoutOrder(const std::vector<T>& expected,
 }
 
 class PlainNetTest : public testing::Test {
+ public:
   virtual void SetUp() {
     net_ = std::make_shared<PlainNet>();
     ASSERT_NE(net_, nullptr);
@@ -50,6 +51,8 @@ class PlainNetTest : public testing::Test {
 
   virtual void TearDown() {}
 
+  virtual void TestBody() {}
+
   void TestOpKernel() {
     AssertSameVectorWithoutOrder({"x", "w1", "b1", "w2", "b2"}, net_->inputs_);
     AssertSameVectorWithoutOrder({"y", "z"}, net_->outputs_);
@@ -67,6 +70,7 @@ class PlainNetTest : public testing::Test {
     ASSERT_EQ(2, infer_shape_cnt);
     ASSERT_EQ(2, run_cnt);
 
+    auto op2 = std::make_shared<TestOp>();
     ASSERT_THROW(net_->AddOp(op2), EnforceNotMet);
   }
 
@@ -83,12 +87,12 @@ class PlainNetTest : public testing::Test {
 
 TEST(OpKernel, all) {
   PlainNetTest net;
-  net->TestOpKernel();
+  net.TestOpKernel();
 }
 
 TEST(AddBackwardOp, TestAddBackwardOp) {
   PlainNetTest net;
-  net->TestAddBackwardOp();
+  net.TestAddBackwardOp();
 }
 
 }  // namespace framework