Reland of Add optional visualization file writers to VideoProcessor tests.

webrtc/test/testsupport/frame_writer_unittest.cc

-/*
- *  Copyright (c) 2011 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/test/testsupport/frame_writer.h"
-
-#include "webrtc/test/gtest.h"
-#include "webrtc/test/testsupport/fileutils.h"
-
-namespace webrtc {
-namespace test {
-
-const size_t kFrameLength = 1000;
-
-class FrameWriterTest: public testing::Test {
- protected:
-  FrameWriterTest() {}
-  virtual ~FrameWriterTest() {}
-  void SetUp() {
-    temp_filename_ = webrtc::test::TempFilename(webrtc::test::OutputPath(),
-                                                "frame_writer_unittest");
-    frame_writer_ = new FrameWriterImpl(temp_filename_, kFrameLength);
-    ASSERT_TRUE(frame_writer_->Init());
-  }
-  void TearDown() {
-    delete frame_writer_;
-    // Cleanup the temporary file.
-    remove(temp_filename_.c_str());
-  }
-  FrameWriter* frame_writer_;
-  std::string temp_filename_;
-};
-
-TEST_F(FrameWriterTest, InitSuccess) {
-  FrameWriterImpl frame_writer(temp_filename_, kFrameLength);
-  ASSERT_TRUE(frame_writer.Init());
-  ASSERT_EQ(kFrameLength, frame_writer.FrameLength());
-}
-
-TEST_F(FrameWriterTest, WriteFrame) {
-  uint8_t buffer[kFrameLength];
-  memset(buffer, 9, kFrameLength);  // Write lots of 9s to the buffer
-  bool result = frame_writer_->WriteFrame(buffer);
-  ASSERT_TRUE(result);  // success
-  // Close the file and verify the size.
-  frame_writer_->Close();
-  ASSERT_EQ(kFrameLength, GetFileSize(temp_filename_));
-}
-
-TEST_F(FrameWriterTest, WriteFrameUninitialized) {
-  uint8_t buffer[3];
-  FrameWriterImpl frame_writer(temp_filename_, kFrameLength);
-  ASSERT_FALSE(frame_writer.WriteFrame(buffer));
-}
-
-}  // namespace test
-}  // namespace webrtc