1 files changed, 56 insertions, 0 deletions
diff --git a/third_party/libwebrtc/sdk/media_constraints_unittest.cc b/third_party/libwebrtc/sdk/media_constraints_unittest.cc
new file mode 100644
index 0000000000..2d25da03e7
--- /dev/null
+++ b/third_party/libwebrtc/sdk/media_constraints_unittest.cc
@@ -0,0 +1,56 @@
+/*
+ *  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 "sdk/media_constraints.h"
+
+#include "test/gtest.h"
+
+namespace webrtc {
+
+namespace {
+
+// Checks all settings touched by CopyConstraintsIntoRtcConfiguration,
+// plus audio_jitter_buffer_max_packets.
+bool Matches(const PeerConnectionInterface::RTCConfiguration& a,
+             const PeerConnectionInterface::RTCConfiguration& b) {
+  return a.audio_jitter_buffer_max_packets ==
+             b.audio_jitter_buffer_max_packets &&
+         a.screencast_min_bitrate == b.screencast_min_bitrate &&
+         a.combined_audio_video_bwe == b.combined_audio_video_bwe &&
+         a.media_config == b.media_config;
+}
+
+TEST(MediaConstraints, CopyConstraintsIntoRtcConfiguration) {
+  const MediaConstraints constraints_empty;
+  PeerConnectionInterface::RTCConfiguration old_configuration;
+  PeerConnectionInterface::RTCConfiguration configuration;
+
+  CopyConstraintsIntoRtcConfiguration(&constraints_empty, &configuration);
+  EXPECT_TRUE(Matches(old_configuration, configuration));
+
+  const MediaConstraints constraints_screencast(
+      {MediaConstraints::Constraint(MediaConstraints::kScreencastMinBitrate,
+                                    "27")},
+      {});
+  CopyConstraintsIntoRtcConfiguration(&constraints_screencast, &configuration);
+  EXPECT_TRUE(configuration.screencast_min_bitrate);
+  EXPECT_EQ(27, *(configuration.screencast_min_bitrate));
+
+  // An empty set of constraints will not overwrite
+  // values that are already present.
+  configuration = old_configuration;
+  configuration.audio_jitter_buffer_max_packets = 34;
+  CopyConstraintsIntoRtcConfiguration(&constraints_empty, &configuration);
+  EXPECT_EQ(34, configuration.audio_jitter_buffer_max_packets);
+}
+
+}  // namespace
+
+}  // namespace webrtc