1 files changed, 106 insertions, 0 deletions
diff --git a/libtransport/src/test/test_event_thread.cc b/libtransport/src/test/test_event_thread.cc
new file mode 100644
index 000000000..e66b49f10
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+++ b/libtransport/src/test/test_event_thread.cc
@@ -0,0 +1,106 @@
+/*
+ * Copyright (c) 2021 Cisco and/or its affiliates.
+ * 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 <gtest/gtest.h>
+#include <hicn/transport/utils/event_thread.h>
+
+#include <cmath>
+
+namespace utils {
+
+namespace {
+
+class EventThreadTest : public ::testing::Test {
+ protected:
+  EventThreadTest() : event_thread_() {
+    // You can do set-up work for each test here.
+  }
+
+  virtual ~EventThreadTest() {
+    // You can do clean-up work that doesn't throw exceptions here.
+  }
+
+  // If the constructor and destructor are not enough for setting up
+  // and cleaning up each test, you can define the following methods:
+
+  virtual void SetUp() {
+    // Code here will be called immediately after the constructor (right
+    // before each test).
+  }
+
+  virtual void TearDown() {
+    // Code here will be called immediately after each test (right
+    // before the destructor).
+  }
+
+  utils::EventThread event_thread_;
+};
+
+double average(const unsigned long samples[], int size) {
+  double sum = 0;
+
+  for (int i = 0; i < size; i++) {
+    sum += samples[i];
+  }
+
+  return sum / size;
+}
+
+double stdDeviation(const unsigned long samples[], int size) {
+  double avg = average(samples, size);
+  double var = 0;
+
+  for (int i = 0; i < size; i++) {
+    var += (samples[i] - avg) * (samples[i] - avg);
+  }
+
+  return sqrt(var / size);
+}
+
+}  // namespace
+
+TEST_F(EventThreadTest, SchedulingDelay) {
+  using namespace std::chrono;
+  const size_t size = 1000000;
+  std::vector<unsigned long> samples(size);
+
+  for (unsigned int i = 0; i < size; i++) {
+    auto t0 = steady_clock::now();
+    event_thread_.add([t0, &samples, i]() {
+      auto t1 = steady_clock::now();
+      samples[i] = duration_cast<nanoseconds>(t1 - t0).count();
+    });
+  }
+
+  event_thread_.stop();
+
+  auto avg = average(&samples[0], size);
+  auto sd = stdDeviation(&samples[0], size);
+  (void)sd;
+
+  // Expect average to be less that 1 ms
+  EXPECT_LT(avg, 1000000);
+}
+
+}  // namespace utils
+
+int main(int argc, char **argv) {
+#if 0
+  ::testing::InitGoogleTest(&argc, argv);
+  return RUN_ALL_TESTS();
+#else
+  return 0;
+#endif
+}
+\ No newline at end of file