1 files changed, 53 insertions, 0 deletions
diff --git a/ruy/tune_test.cc b/ruy/tune_test.cc
new file mode 100644
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+++ b/ruy/tune_test.cc
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+/* Copyright 2019 Google LLC. 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 "ruy/tune.h"
+
+#include <chrono>  // NOLINT(build/c++11)
+#include <thread>  // NOLINT(build/c++11)
+
+#include "testing/base/public/gunit.h"
+
+namespace ruy {
+namespace {
+
+TEST(TuneTest, TuneTest) {
+  TuningResolver tuning_resolver;
+  ASSERT_FALSE(tuning_resolver.Resolve() == Tuning::kAuto);
+  // 1 second is likely higher than TuningResolver's internal cache expiry,
+  // exercising the logic invalidating earlier tuning resolutions.
+  std::this_thread::sleep_for(std::chrono::seconds(1));
+  ASSERT_FALSE(tuning_resolver.Resolve() == Tuning::kAuto);
+
+  tuning_resolver.SetTuning(Tuning::kAuto);
+
+#ifdef RUY_IMPLEMENT_TUNING
+  for (auto tuning : {Tuning::kOutOfOrder, Tuning::kInOrder}) {
+    tuning_resolver.SetTuning(tuning);
+    ASSERT_TRUE(tuning_resolver.Resolve() == tuning);
+    // See above comment about 1 second.
+    std::this_thread::sleep_for(std::chrono::seconds(1));
+    ASSERT_TRUE(tuning_resolver.Resolve() == tuning);
+  }
+#endif
+}
+
+}  // namespace
+}  // namespace ruy
+
+int main(int argc, char** argv) {
+  ::testing::InitGoogleTest(&argc, argv);
+  return RUN_ALL_TESTS();
+}