Moving src/webrtc into src/.

In order to eliminate the WebRTC Subtree mirror in Chromium, 
WebRTC is moving the content of the src/webrtc directory up
to the src/ directory.

NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
TBR=tommi@webrtc.org

Bug: chromium:611808
Change-Id: Iac59c5b51b950f174119565bac87955a7994bc38
Reviewed-on: https://webrtc-review.googlesource.com/1560
Commit-Queue: Mirko Bonadei <mbonadei@webrtc.org>
Reviewed-by: Henrik Kjellander <kjellander@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#19845}

system_wrappers/source/metrics_unittest.cc

@@ -0,0 +1,127 @@
+/*
+ *  Copyright (c) 2015 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/system_wrappers/include/metrics.h"
+#include "webrtc/system_wrappers/include/metrics_default.h"
+#include "webrtc/test/gtest.h"
+
+namespace webrtc {
+namespace {
+const int kSample = 22;
+
+void AddSparseSample(const std::string& name, int sample) {
+  RTC_HISTOGRAM_COUNTS_SPARSE_100(name, sample);
+}
+void AddSampleWithVaryingName(int index, const std::string& name, int sample) {
+  RTC_HISTOGRAMS_COUNTS_100(index, name, sample);
+}
+#if RTC_DCHECK_IS_ON && GTEST_HAS_DEATH_TEST && !defined(WEBRTC_ANDROID)
+void AddSample(const std::string& name, int sample) {
+  RTC_HISTOGRAM_COUNTS_100(name, sample);
+}
+#endif  // RTC_DCHECK_IS_ON && GTEST_HAS_DEATH_TEST && !defined(WEBRTC_ANDROID)
+}  // namespace
+
+class MetricsTest : public ::testing::Test {
+ public:
+  MetricsTest() {}
+
+ protected:
+  virtual void SetUp() {
+    metrics::Reset();
+  }
+};
+
+TEST_F(MetricsTest, InitiallyNoSamples) {
+  EXPECT_EQ(0, metrics::NumSamples("NonExisting"));
+  EXPECT_EQ(0, metrics::NumEvents("NonExisting", kSample));
+}
+
+TEST_F(MetricsTest, RtcHistogramPercent_AddSample) {
+  const std::string kName = "Percentage";
+  RTC_HISTOGRAM_PERCENTAGE(kName, kSample);
+  EXPECT_EQ(1, metrics::NumSamples(kName));
+  EXPECT_EQ(1, metrics::NumEvents(kName, kSample));
+}
+
+TEST_F(MetricsTest, RtcHistogramEnumeration_AddSample) {
+  const std::string kName = "Enumeration";
+  RTC_HISTOGRAM_ENUMERATION(kName, kSample, kSample + 1);
+  EXPECT_EQ(1, metrics::NumSamples(kName));
+  EXPECT_EQ(1, metrics::NumEvents(kName, kSample));
+}
+
+TEST_F(MetricsTest, RtcHistogramBoolean_AddSample) {
+  const std::string kName = "Boolean";
+  const int kSample = 0;
+  RTC_HISTOGRAM_BOOLEAN(kName, kSample);
+  EXPECT_EQ(1, metrics::NumSamples(kName));
+  EXPECT_EQ(1, metrics::NumEvents(kName, kSample));
+}
+
+TEST_F(MetricsTest, RtcHistogramCountsSparse_AddSample) {
+  const std::string kName = "CountsSparse100";
+  RTC_HISTOGRAM_COUNTS_SPARSE_100(kName, kSample);
+  EXPECT_EQ(1, metrics::NumSamples(kName));
+  EXPECT_EQ(1, metrics::NumEvents(kName, kSample));
+}
+
+TEST_F(MetricsTest, RtcHistogramCounts_AddSample) {
+  const std::string kName = "Counts100";
+  RTC_HISTOGRAM_COUNTS_100(kName, kSample);
+  EXPECT_EQ(1, metrics::NumSamples(kName));
+  EXPECT_EQ(1, metrics::NumEvents(kName, kSample));
+}
+
+TEST_F(MetricsTest, RtcHistogramCounts_AddMultipleSamples) {
+  const std::string kName = "Counts200";
+  const int kNumSamples = 10;
+  for (int i = 1; i <= kNumSamples; ++i) {
+    RTC_HISTOGRAM_COUNTS_200(kName, i);
+    EXPECT_EQ(1, metrics::NumEvents(kName, i));
+    EXPECT_EQ(i, metrics::NumSamples(kName));
+  }
+}
+
+TEST_F(MetricsTest, RtcHistogramsCounts_AddSample) {
+  AddSampleWithVaryingName(0, "Name1", kSample);
+  AddSampleWithVaryingName(1, "Name2", kSample + 1);
+  AddSampleWithVaryingName(2, "Name3", kSample + 2);
+  EXPECT_EQ(1, metrics::NumSamples("Name1"));
+  EXPECT_EQ(1, metrics::NumSamples("Name2"));
+  EXPECT_EQ(1, metrics::NumSamples("Name3"));
+  EXPECT_EQ(1, metrics::NumEvents("Name1", kSample + 0));
+  EXPECT_EQ(1, metrics::NumEvents("Name2", kSample + 1));
+  EXPECT_EQ(1, metrics::NumEvents("Name3", kSample + 2));
+}
+
+#if RTC_DCHECK_IS_ON && GTEST_HAS_DEATH_TEST && !defined(WEBRTC_ANDROID)
+TEST_F(MetricsTest, RtcHistogramsCounts_InvalidIndex) {
+  EXPECT_DEATH(RTC_HISTOGRAMS_COUNTS_1000(-1, "Name", kSample), "");
+  EXPECT_DEATH(RTC_HISTOGRAMS_COUNTS_1000(3, "Name", kSample), "");
+  EXPECT_DEATH(RTC_HISTOGRAMS_COUNTS_1000(3u, "Name", kSample), "");
+}
+#endif
+
+TEST_F(MetricsTest, RtcHistogramSparse_NonConstantNameWorks) {
+  AddSparseSample("Sparse1", kSample);
+  AddSparseSample("Sparse2", kSample);
+  EXPECT_EQ(1, metrics::NumSamples("Sparse1"));
+  EXPECT_EQ(1, metrics::NumSamples("Sparse2"));
+}
+
+#if RTC_DCHECK_IS_ON && GTEST_HAS_DEATH_TEST && !defined(WEBRTC_ANDROID)
+TEST_F(MetricsTest, RtcHistogram_FailsForNonConstantName) {
+  AddSample("ConstantName1", kSample);
+  EXPECT_DEATH(AddSample("NotConstantName1", kSample), "");
+}
+#endif
+
+}  // namespace webrtc