chore: import upstream snapshot with attribution

test/cpp/fluid/platform/timer_test.cc

@@ -0,0 +1,46 @@
+//  Copyright (c) 2018 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/phi/core/platform/timer.h"
+
+#include "gtest/gtest.h"
+
+TEST(Timer, Reset) {
+  paddle::platform::Timer timeline;
+  timeline.Start();
+  sleep(3);
+  timeline.Pause();
+  timeline.Reset();
+}
+
+TEST(Timer, Start) {
+  paddle::platform::Timer timeline;
+  timeline.Start();
+  sleep(3);
+  timeline.Pause();
+}
+
+TEST(Timer, Pause) {
+  paddle::platform::Timer timeline;
+  timeline.Start();
+  sleep(3);
+  timeline.Pause();
+}
+
+TEST(Timer, Resume) {
+  paddle::platform::Timer timeline;
+  timeline.Start();
+  sleep(3);
+  timeline.Pause();
+  timeline.Resume();
+}