1 files changed, 139 insertions, 0 deletions
diff --git a/test/testsupport/metrics/video_metrics_unittest.cc b/test/testsupport/metrics/video_metrics_unittest.cc
new file mode 100644
index 0000000000..e77dbff8c9
--- /dev/null
+++ b/test/testsupport/metrics/video_metrics_unittest.cc
@@ -0,0 +1,139 @@
+/*
+ *  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 "testsupport/metrics/video_metrics.h"
+
+#include "gtest/gtest.h"
+#include "testsupport/fileutils.h"
+
+namespace webrtc {
+
+static const char* kEmptyFileName = "video_metrics_unittest_empty_file.tmp";
+static const char* kNonExistingFileName = "video_metrics_unittest_non_existing";
+static const int kWidth = 352;
+static const int kHeight = 288;
+
+static const int kMissingReferenceFileReturnCode = -1;
+static const int kMissingTestFileReturnCode = -2;
+static const int kEmptyFileReturnCode = -3;
+static const double kPsnrPerfectResult =  48.0;
+static const double kSsimPerfectResult = 1.0;
+
+class VideoMetricsTest: public testing::Test {
+ protected:
+  VideoMetricsTest() {
+    video_file_ = webrtc::test::ResourcePath("foreman_cif_short", "yuv");
+  }
+  virtual ~VideoMetricsTest() {}
+  void SetUp() {
+    // Create an empty file:
+    FILE* dummy = fopen(kEmptyFileName, "wb");
+    fclose(dummy);
+  }
+  void TearDown() {
+    std::remove(kEmptyFileName);
+  }
+  webrtc::test::QualityMetricsResult psnr_result_;
+  webrtc::test::QualityMetricsResult ssim_result_;
+  std::string video_file_;
+};
+
+// Tests that it is possible to run with the same reference as test file
+TEST_F(VideoMetricsTest, ReturnsPerfectResultForIdenticalFilesPSNR) {
+  EXPECT_EQ(0, I420PSNRFromFiles(video_file_.c_str(), video_file_.c_str(),
+                                 kWidth, kHeight, &psnr_result_));
+  EXPECT_EQ(kPsnrPerfectResult, psnr_result_.average);
+}
+
+TEST_F(VideoMetricsTest, ReturnsPerfectResultForIdenticalFilesSSIM) {
+  EXPECT_EQ(0, I420SSIMFromFiles(video_file_.c_str(), video_file_.c_str(),
+                                 kWidth, kHeight, &ssim_result_));
+  EXPECT_EQ(kSsimPerfectResult, ssim_result_.average);
+}
+
+TEST_F(VideoMetricsTest, ReturnsPerfectResultForIdenticalFilesBothMetrics) {
+  EXPECT_EQ(0, I420MetricsFromFiles(video_file_.c_str(), video_file_.c_str(),
+                                    kWidth, kHeight, &psnr_result_,
+                                    &ssim_result_));
+  EXPECT_EQ(kPsnrPerfectResult, psnr_result_.average);
+  EXPECT_EQ(kSsimPerfectResult, ssim_result_.average);
+}
+
+// Tests that the right return code is given when the reference file is missing.
+TEST_F(VideoMetricsTest, MissingReferenceFilePSNR) {
+  EXPECT_EQ(kMissingReferenceFileReturnCode,
+            I420PSNRFromFiles(kNonExistingFileName, video_file_.c_str(),
+                              kWidth, kHeight, &ssim_result_));
+}
+
+TEST_F(VideoMetricsTest, MissingReferenceFileSSIM) {
+  EXPECT_EQ(kMissingReferenceFileReturnCode,
+            I420SSIMFromFiles(kNonExistingFileName, video_file_.c_str(),
+                              kWidth, kHeight, &ssim_result_));
+}
+
+TEST_F(VideoMetricsTest, MissingReferenceFileBothMetrics) {
+  EXPECT_EQ(kMissingReferenceFileReturnCode,
+            I420MetricsFromFiles(kNonExistingFileName, video_file_.c_str(),
+                                 kWidth, kHeight,
+                                 &psnr_result_, &ssim_result_));
+}
+
+// Tests that the right return code is given when the test file is missing.
+TEST_F(VideoMetricsTest, MissingTestFilePSNR) {
+  EXPECT_EQ(kMissingTestFileReturnCode,
+            I420PSNRFromFiles(video_file_.c_str(), kNonExistingFileName,
+                              kWidth, kHeight, &ssim_result_));
+}
+
+TEST_F(VideoMetricsTest, MissingTestFileSSIM) {
+  EXPECT_EQ(kMissingTestFileReturnCode,
+            I420SSIMFromFiles(video_file_.c_str(), kNonExistingFileName,
+                              kWidth, kHeight, &ssim_result_));
+}
+
+TEST_F(VideoMetricsTest, MissingTestFileBothMetrics) {
+  EXPECT_EQ(kMissingTestFileReturnCode,
+            I420MetricsFromFiles(video_file_.c_str(), kNonExistingFileName,
+                                 kWidth, kHeight,
+                                 &psnr_result_, &ssim_result_));
+}
+
+// Tests that the method can be executed with empty files.
+TEST_F(VideoMetricsTest, EmptyFilesPSNR) {
+  EXPECT_EQ(kEmptyFileReturnCode,
+            I420PSNRFromFiles(kEmptyFileName, video_file_.c_str(),
+                              kWidth, kHeight, &ssim_result_));
+  EXPECT_EQ(kEmptyFileReturnCode,
+            I420PSNRFromFiles(video_file_.c_str(), kEmptyFileName,
+                              kWidth, kHeight, &ssim_result_));
+}
+
+TEST_F(VideoMetricsTest, EmptyFilesSSIM) {
+  EXPECT_EQ(kEmptyFileReturnCode,
+            I420SSIMFromFiles(kEmptyFileName, video_file_.c_str(),
+                              kWidth, kHeight, &ssim_result_));
+  EXPECT_EQ(kEmptyFileReturnCode,
+            I420SSIMFromFiles(video_file_.c_str(), kEmptyFileName,
+                              kWidth, kHeight, &ssim_result_));
+}
+
+TEST_F(VideoMetricsTest, EmptyFilesBothMetrics) {
+  EXPECT_EQ(kEmptyFileReturnCode,
+            I420MetricsFromFiles(kEmptyFileName, video_file_.c_str(),
+                                 kWidth, kHeight,
+                                 &psnr_result_, &ssim_result_));
+  EXPECT_EQ(kEmptyFileReturnCode,
+              I420MetricsFromFiles(video_file_.c_str(), kEmptyFileName,
+                                   kWidth, kHeight,
+                                   &psnr_result_, &ssim_result_));
+}
+
+}  // namespace webrtc