1 files changed, 61 insertions, 0 deletions
diff --git a/third_party/libwebrtc/test/pc/e2e/analyzer/video/simulcast_dummy_buffer_helper_test.cc b/third_party/libwebrtc/test/pc/e2e/analyzer/video/simulcast_dummy_buffer_helper_test.cc
new file mode 100644
index 0000000000..db1030232d
--- /dev/null
+++ b/third_party/libwebrtc/test/pc/e2e/analyzer/video/simulcast_dummy_buffer_helper_test.cc
@@ -0,0 +1,61 @@
+/*
+ *  Copyright (c) 2022 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 "test/pc/e2e/analyzer/video/simulcast_dummy_buffer_helper.h"
+
+#include "api/video/i420_buffer.h"
+#include "api/video/video_frame.h"
+#include "api/video/video_frame_buffer.h"
+#include "rtc_base/random.h"
+#include "test/gmock.h"
+#include "test/gtest.h"
+
+namespace webrtc {
+namespace webrtc_pc_e2e {
+namespace {
+
+uint8_t RandByte(Random& random) {
+  return random.Rand(255);
+}
+
+VideoFrame CreateRandom2x2VideoFrame(uint16_t id, Random& random) {
+  rtc::scoped_refptr<I420Buffer> buffer = I420Buffer::Create(2, 2);
+
+  uint8_t data[6] = {RandByte(random), RandByte(random), RandByte(random),
+                     RandByte(random), RandByte(random), RandByte(random)};
+
+  memcpy(buffer->MutableDataY(), data, 2);
+  memcpy(buffer->MutableDataY() + buffer->StrideY(), data + 2, 2);
+  memcpy(buffer->MutableDataU(), data + 4, 1);
+  memcpy(buffer->MutableDataV(), data + 5, 1);
+
+  return VideoFrame::Builder()
+      .set_id(id)
+      .set_video_frame_buffer(buffer)
+      .set_timestamp_us(1)
+      .build();
+}
+
+TEST(CreateDummyFrameBufferTest, CreatedBufferIsDummy) {
+  VideoFrame dummy_frame = VideoFrame::Builder()
+                               .set_video_frame_buffer(CreateDummyFrameBuffer())
+                               .build();
+
+  EXPECT_TRUE(IsDummyFrame(dummy_frame));
+}
+
+TEST(IsDummyFrameTest, NotEveryFrameIsDummy) {
+  Random random(/*seed=*/100);
+  VideoFrame frame = CreateRandom2x2VideoFrame(1, random);
+  EXPECT_FALSE(IsDummyFrame(frame));
+}
+
+}  // namespace
+}  // namespace webrtc_pc_e2e
+}  // namespace webrtc