chore: import upstream snapshot with attribution

test/cpp/fluid/framework/trainer_test.cc

@@ -0,0 +1,28 @@
+// Copyright (c) 2019 PaddlePaddle Authors. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#include "paddle/fluid/framework/trainer.h"
+
+#include <gtest/gtest.h>
+
+namespace paddle {
+namespace framework {
+TEST() {
+  // create multi trainer
+  // create hogwild device worker
+  // create dataset
+  // train for a while
+}
+}  // namespace framework
+}  // namespace paddle