1 files changed, 211 insertions, 0 deletions
diff --git a/third_party/libwebrtc/api/test/metrics/stdout_metrics_exporter_test.cc b/third_party/libwebrtc/api/test/metrics/stdout_metrics_exporter_test.cc
new file mode 100644
index 0000000000..91c06fac5b
--- /dev/null
+++ b/third_party/libwebrtc/api/test/metrics/stdout_metrics_exporter_test.cc
@@ -0,0 +1,211 @@
+/*
+ *  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 "api/test/metrics/stdout_metrics_exporter.h"
+
+#include <map>
+#include <string>
+#include <vector>
+
+#include "api/test/metrics/metric.h"
+#include "api/units/timestamp.h"
+#include "test/gmock.h"
+#include "test/gtest.h"
+
+namespace webrtc {
+namespace test {
+namespace {
+
+using ::testing::TestWithParam;
+
+std::map<std::string, std::string> DefaultMetadata() {
+  return std::map<std::string, std::string>{{"key", "value"}};
+}
+
+Metric::TimeSeries::Sample Sample(double value) {
+  return Metric::TimeSeries::Sample{.timestamp = Timestamp::Seconds(1),
+                                    .value = value,
+                                    .sample_metadata = DefaultMetadata()};
+}
+
+Metric PsnrForTestFoo(double mean, double stddev) {
+  return Metric{.name = "psnr",
+                .unit = Unit::kUnitless,
+                .improvement_direction = ImprovementDirection::kBiggerIsBetter,
+                .test_case = "foo",
+                .time_series = Metric::TimeSeries{},
+                .stats = Metric::Stats{.mean = mean, .stddev = stddev}};
+}
+
+TEST(StdoutMetricsExporterTest, ExportMetricFormatCorrect) {
+  Metric metric1{
+      .name = "test_metric1",
+      .unit = Unit::kMilliseconds,
+      .improvement_direction = ImprovementDirection::kBiggerIsBetter,
+      .test_case = "test_case_name1",
+      .metric_metadata = DefaultMetadata(),
+      .time_series =
+          Metric::TimeSeries{.samples = std::vector{Sample(10), Sample(20)}},
+      .stats =
+          Metric::Stats{.mean = 15.0, .stddev = 5.0, .min = 10.0, .max = 20.0}};
+  Metric metric2{
+      .name = "test_metric2",
+      .unit = Unit::kKilobitsPerSecond,
+      .improvement_direction = ImprovementDirection::kSmallerIsBetter,
+      .test_case = "test_case_name2",
+      .metric_metadata = DefaultMetadata(),
+      .time_series =
+          Metric::TimeSeries{.samples = std::vector{Sample(20), Sample(40)}},
+      .stats = Metric::Stats{
+          .mean = 30.0, .stddev = 10.0, .min = 20.0, .max = 40.0}};
+
+  testing::internal::CaptureStdout();
+  StdoutMetricsExporter exporter;
+
+  std::string expected =
+      "RESULT: test_case_name1 / test_metric1= "
+      "{mean=15, stddev=5} Milliseconds (BiggerIsBetter)\n"
+      "RESULT: test_case_name2 / test_metric2= "
+      "{mean=30, stddev=10} KilobitsPerSecond (SmallerIsBetter)\n";
+
+  EXPECT_TRUE(exporter.Export(std::vector<Metric>{metric1, metric2}));
+  EXPECT_EQ(expected, testing::internal::GetCapturedStdout());
+}
+
+TEST(StdoutMetricsExporterNumberFormatTest, PositiveNumberMaxPrecision) {
+  testing::internal::CaptureStdout();
+  StdoutMetricsExporter exporter;
+
+  Metric metric = PsnrForTestFoo(15.00000001, 0.00000001);
+  std::string expected =
+      "RESULT: foo / psnr= "
+      "{mean=15.00000001, stddev=0.00000001} Unitless (BiggerIsBetter)\n";
+  EXPECT_TRUE(exporter.Export(std::vector<Metric>{metric}));
+  EXPECT_EQ(expected, testing::internal::GetCapturedStdout());
+}
+
+TEST(StdoutMetricsExporterNumberFormatTest,
+     PositiveNumberTrailingZeroNotAdded) {
+  testing::internal::CaptureStdout();
+  StdoutMetricsExporter exporter;
+
+  Metric metric = PsnrForTestFoo(15.12345, 0.12);
+  std::string expected =
+      "RESULT: foo / psnr= "
+      "{mean=15.12345, stddev=0.12} Unitless (BiggerIsBetter)\n";
+  EXPECT_TRUE(exporter.Export(std::vector<Metric>{metric}));
+  EXPECT_EQ(expected, testing::internal::GetCapturedStdout());
+}
+
+TEST(StdoutMetricsExporterNumberFormatTest,
+     PositiveNumberTrailingZeroAreRemoved) {
+  testing::internal::CaptureStdout();
+  StdoutMetricsExporter exporter;
+
+  Metric metric = PsnrForTestFoo(15.123450000, 0.120000000);
+  std::string expected =
+      "RESULT: foo / psnr= "
+      "{mean=15.12345, stddev=0.12} Unitless (BiggerIsBetter)\n";
+  EXPECT_TRUE(exporter.Export(std::vector<Metric>{metric}));
+  EXPECT_EQ(expected, testing::internal::GetCapturedStdout());
+}
+
+TEST(StdoutMetricsExporterNumberFormatTest,
+     PositiveNumberRoundsUpOnPrecisionCorrectly) {
+  testing::internal::CaptureStdout();
+  StdoutMetricsExporter exporter;
+
+  Metric metric = PsnrForTestFoo(15.000000009, 0.999999999);
+  std::string expected =
+      "RESULT: foo / psnr= "
+      "{mean=15.00000001, stddev=1} Unitless (BiggerIsBetter)\n";
+  EXPECT_TRUE(exporter.Export(std::vector<Metric>{metric}));
+  EXPECT_EQ(expected, testing::internal::GetCapturedStdout());
+}
+
+TEST(StdoutMetricsExporterNumberFormatTest,
+     PositiveNumberRoundsDownOnPrecisionCorrectly) {
+  testing::internal::CaptureStdout();
+  StdoutMetricsExporter exporter;
+
+  Metric metric = PsnrForTestFoo(15.0000000049, 0.9999999949);
+  std::string expected =
+      "RESULT: foo / psnr= "
+      "{mean=15, stddev=0.99999999} Unitless (BiggerIsBetter)\n";
+  EXPECT_TRUE(exporter.Export(std::vector<Metric>{metric}));
+  EXPECT_EQ(expected, testing::internal::GetCapturedStdout());
+}
+
+TEST(StdoutMetricsExporterNumberFormatTest, NegativeNumberMaxPrecision) {
+  testing::internal::CaptureStdout();
+  StdoutMetricsExporter exporter;
+
+  Metric metric = PsnrForTestFoo(-15.00000001, -0.00000001);
+  std::string expected =
+      "RESULT: foo / psnr= "
+      "{mean=-15.00000001, stddev=-0.00000001} Unitless (BiggerIsBetter)\n";
+  EXPECT_TRUE(exporter.Export(std::vector<Metric>{metric}));
+  EXPECT_EQ(expected, testing::internal::GetCapturedStdout());
+}
+
+TEST(StdoutMetricsExporterNumberFormatTest,
+     NegativeNumberTrailingZeroNotAdded) {
+  testing::internal::CaptureStdout();
+  StdoutMetricsExporter exporter;
+
+  Metric metric = PsnrForTestFoo(-15.12345, -0.12);
+  std::string expected =
+      "RESULT: foo / psnr= "
+      "{mean=-15.12345, stddev=-0.12} Unitless (BiggerIsBetter)\n";
+  EXPECT_TRUE(exporter.Export(std::vector<Metric>{metric}));
+  EXPECT_EQ(expected, testing::internal::GetCapturedStdout());
+}
+
+TEST(StdoutMetricsExporterNumberFormatTest,
+     NegativeNumberTrailingZeroAreRemoved) {
+  testing::internal::CaptureStdout();
+  StdoutMetricsExporter exporter;
+
+  Metric metric = PsnrForTestFoo(-15.123450000, -0.120000000);
+  std::string expected =
+      "RESULT: foo / psnr= "
+      "{mean=-15.12345, stddev=-0.12} Unitless (BiggerIsBetter)\n";
+  EXPECT_TRUE(exporter.Export(std::vector<Metric>{metric}));
+  EXPECT_EQ(expected, testing::internal::GetCapturedStdout());
+}
+
+TEST(StdoutMetricsExporterNumberFormatTest,
+     NegativeNumberRoundsUpOnPrecisionCorrectly) {
+  testing::internal::CaptureStdout();
+  StdoutMetricsExporter exporter;
+
+  Metric metric = PsnrForTestFoo(-15.000000009, -0.999999999);
+  std::string expected =
+      "RESULT: foo / psnr= "
+      "{mean=-15.00000001, stddev=-1} Unitless (BiggerIsBetter)\n";
+  EXPECT_TRUE(exporter.Export(std::vector<Metric>{metric}));
+  EXPECT_EQ(expected, testing::internal::GetCapturedStdout());
+}
+
+TEST(StdoutMetricsExporterNumberFormatTest,
+     NegativeNumberRoundsDownOnPrecisionCorrectly) {
+  testing::internal::CaptureStdout();
+  StdoutMetricsExporter exporter;
+
+  Metric metric = PsnrForTestFoo(-15.0000000049, -0.9999999949);
+  std::string expected =
+      "RESULT: foo / psnr= "
+      "{mean=-15, stddev=-0.99999999} Unitless (BiggerIsBetter)\n";
+  EXPECT_TRUE(exporter.Export(std::vector<Metric>{metric}));
+  EXPECT_EQ(expected, testing::internal::GetCapturedStdout());
+}
+
+}  // namespace
+}  // namespace test
+}  // namespace webrtc