Comparison of videos with reference frame not starting from zero

webrtc/tools/frame_analyzer/video_quality_analysis_unittest.cc

 /*
  *  Copyright (c) 2013 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.
  */
 
@@ skipping 67 matching lines @@
 
 TEST_F(VideoQualityAnalysisTest, PrintAnalysisResultsThreeFrames) {
   ResultsContainer result;
   result.frames.push_back(AnalysisResult(0, 35.0, 0.9));
   result.frames.push_back(AnalysisResult(1, 34.0, 0.8));
   result.frames.push_back(AnalysisResult(2, 33.0, 0.7));
   PrintAnalysisResults(logfile_, "ThreeFrames", &result);
 }
 
 TEST_F(VideoQualityAnalysisTest, PrintMaxRepeatedAndSkippedFramesInvalidFile) {
-  std::string stats_filename = OutputPath() + "non-existing-stats-file.txt";
+  std::string stats_filename_ref =
+      OutputPath() + "non-existing-stats-file-1.txt";
+  std::string stats_filename = OutputPath() + "non-existing-stats-file-2.txt";
   remove(stats_filename.c_str());
   PrintMaxRepeatedAndSkippedFrames(logfile_, "NonExistingStatsFile",
-                                   stats_filename);
+                                   stats_filename_ref, stats_filename);
 }
 
 TEST_F(VideoQualityAnalysisTest,
        PrintMaxRepeatedAndSkippedFramesEmptyStatsFile) {
-  std::string stats_filename = OutputPath() + "empty-stats.txt";
+  std::string stats_filename_ref = OutputPath() + "empty-stats-1.txt";
+  std::string stats_filename = OutputPath() + "empty-stats-2.txt";
   std::ofstream stats_file;
+  stats_file.open(stats_filename_ref.c_str());
+  stats_file.close();
   stats_file.open(stats_filename.c_str());
   stats_file.close();
-  PrintMaxRepeatedAndSkippedFrames(logfile_, "EmptyStatsFile", stats_filename);
+  PrintMaxRepeatedAndSkippedFrames(logfile_, "EmptyStatsFile",
+                                   stats_filename_ref, stats_filename);
 }
 
 TEST_F(VideoQualityAnalysisTest, PrintMaxRepeatedAndSkippedFramesNormalFile) {
-  std::string stats_filename = OutputPath() + "stats.txt";
+  std::string stats_filename_ref = OutputPath() + "stats-1.txt";
+  std::string stats_filename = OutputPath() + "stats-2.txt";
   std::ofstream stats_file;
+
+  stats_file.open(stats_filename_ref.c_str());
+  stats_file << "frame_0001 0100\n";
+  stats_file << "frame_0002 0101\n";
+  stats_file << "frame_0003 0102\n";
+  stats_file << "frame_0004 0103\n";
+  stats_file << "frame_0005 0106\n";
+  stats_file << "frame_0006 0107\n";
+  stats_file << "frame_0007 0108\n";
+  stats_file.close();
+
   stats_file.open(stats_filename.c_str());
   stats_file << "frame_0001 0100\n";
   stats_file << "frame_0002 0101\n";
   stats_file << "frame_0003 0101\n";
   stats_file << "frame_0004 0106\n";
   stats_file.close();
 
-  PrintMaxRepeatedAndSkippedFrames(logfile_, "NormalStatsFile", stats_filename);
+  PrintMaxRepeatedAndSkippedFrames(logfile_, "NormalStatsFile",
+                                   stats_filename_ref, stats_filename);
 }
 
 
 }  // namespace test
 }  // namespace webrtc