Added log messages for important call setup events: first packet sent/received

webrtc/base/onetimeevent_unittest.cc

+/*
+ *  Copyright 2016 The WebRTC Project Authors. All rights reserved.
+ *
+ *  Use of this source code is governed by a BSD-style license
+ *  that can be found in the LICENSE file in the root of the source
+ *  tree. An additional intellectual property rights grant can be found
+ *  in the file PATENTS.  All contributing project authors may
+ *  be found in the AUTHORS file in the root of the source tree.
+ */
+
+#include "webrtc/base/gunit.h"
+#include "webrtc/base/onetimeevent.h"
+
+namespace webrtc {
+
+TEST(OneTimeEventTest, ThreadSafe) {
+  OneTimeEvent ot;
+
+  // The one time event is expected to evaluate to true only the first time.
+  EXPECT_TRUE(ot());
+  EXPECT_FALSE(ot());
+  EXPECT_FALSE(ot());
+}
+
+TEST(OneTimeEventTest, ThreadUnsafe) {
+  ThreadUnsafeOneTimeEvent ot;
+
+  EXPECT_TRUE(ot());
+  EXPECT_FALSE(ot());
+  EXPECT_FALSE(ot());
+}
+
+}  // namespace webrtc