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/*
* Copyright (c) 2016 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 <map>
#include <memory>
#include <string>
#include <utility>
#include "rtc_base/checks.h"
#include "system_wrappers/include/metrics.h"
#include "test/gtest.h"
namespace webrtc {
namespace {
const int kSample = 22;
const char kName[] = "Name";
int NumSamples(
const std::string& name,
const std::map<std::string, std::unique_ptr<metrics::SampleInfo>>&
histograms) {
const auto it = histograms.find(name);
if (it == histograms.end())
return 0;
int num_samples = 0;
for (const auto& sample : it->second->samples)
num_samples += sample.second;
return num_samples;
}
int NumEvents(const std::string& name,
int sample,
const std::map<std::string, std::unique_ptr<metrics::SampleInfo>>&
histograms) {
const auto it = histograms.find(name);
if (it == histograms.end())
return 0;
const auto it_sample = it->second->samples.find(sample);
if (it_sample == it->second->samples.end())
return 0;
return it_sample->second;
}
} // namespace
class MetricsDefaultTest : public ::testing::Test {
public:
MetricsDefaultTest() {}
protected:
void SetUp() override { metrics::Reset(); }
};
TEST_F(MetricsDefaultTest, Reset) {
RTC_HISTOGRAM_PERCENTAGE(kName, kSample);
EXPECT_EQ(1, metrics::NumSamples(kName));
metrics::Reset();
EXPECT_EQ(0, metrics::NumSamples(kName));
}
TEST_F(MetricsDefaultTest, NumSamples) {
RTC_HISTOGRAM_PERCENTAGE(kName, 5);
RTC_HISTOGRAM_PERCENTAGE(kName, 5);
RTC_HISTOGRAM_PERCENTAGE(kName, 10);
EXPECT_EQ(3, metrics::NumSamples(kName));
EXPECT_EQ(0, metrics::NumSamples("NonExisting"));
}
TEST_F(MetricsDefaultTest, NumEvents) {
RTC_HISTOGRAM_PERCENTAGE(kName, 5);
RTC_HISTOGRAM_PERCENTAGE(kName, 5);
RTC_HISTOGRAM_PERCENTAGE(kName, 10);
EXPECT_EQ(2, metrics::NumEvents(kName, 5));
EXPECT_EQ(1, metrics::NumEvents(kName, 10));
EXPECT_EQ(0, metrics::NumEvents(kName, 11));
EXPECT_EQ(0, metrics::NumEvents("NonExisting", 5));
}
TEST_F(MetricsDefaultTest, MinSample) {
RTC_HISTOGRAM_PERCENTAGE(kName, kSample);
RTC_HISTOGRAM_PERCENTAGE(kName, kSample + 1);
EXPECT_EQ(kSample, metrics::MinSample(kName));
EXPECT_EQ(-1, metrics::MinSample("NonExisting"));
}
TEST_F(MetricsDefaultTest, Overflow) {
const std::string kName = "Overflow";
// Samples should end up in overflow bucket.
RTC_HISTOGRAM_PERCENTAGE(kName, 101);
EXPECT_EQ(1, metrics::NumSamples(kName));
EXPECT_EQ(1, metrics::NumEvents(kName, 101));
RTC_HISTOGRAM_PERCENTAGE(kName, 102);
EXPECT_EQ(2, metrics::NumSamples(kName));
EXPECT_EQ(2, metrics::NumEvents(kName, 101));
}
TEST_F(MetricsDefaultTest, Underflow) {
const std::string kName = "Underflow";
// Samples should end up in underflow bucket.
RTC_HISTOGRAM_COUNTS_10000(kName, 0);
EXPECT_EQ(1, metrics::NumSamples(kName));
EXPECT_EQ(1, metrics::NumEvents(kName, 0));
RTC_HISTOGRAM_COUNTS_10000(kName, -1);
EXPECT_EQ(2, metrics::NumSamples(kName));
EXPECT_EQ(2, metrics::NumEvents(kName, 0));
}
TEST_F(MetricsDefaultTest, GetAndReset) {
std::map<std::string, std::unique_ptr<metrics::SampleInfo>> histograms;
metrics::GetAndReset(&histograms);
EXPECT_EQ(0u, histograms.size());
RTC_HISTOGRAM_PERCENTAGE("Histogram1", 4);
RTC_HISTOGRAM_PERCENTAGE("Histogram1", 5);
RTC_HISTOGRAM_PERCENTAGE("Histogram1", 5);
RTC_HISTOGRAM_PERCENTAGE("Histogram2", 10);
EXPECT_EQ(3, metrics::NumSamples("Histogram1"));
EXPECT_EQ(1, metrics::NumSamples("Histogram2"));
metrics::GetAndReset(&histograms);
EXPECT_EQ(2u, histograms.size());
EXPECT_EQ(0, metrics::NumSamples("Histogram1"));
EXPECT_EQ(0, metrics::NumSamples("Histogram2"));
EXPECT_EQ(3, NumSamples("Histogram1", histograms));
EXPECT_EQ(1, NumSamples("Histogram2", histograms));
EXPECT_EQ(1, NumEvents("Histogram1", 4, histograms));
EXPECT_EQ(2, NumEvents("Histogram1", 5, histograms));
EXPECT_EQ(1, NumEvents("Histogram2", 10, histograms));
// Add samples after reset.
metrics::GetAndReset(&histograms);
EXPECT_EQ(0u, histograms.size());
RTC_HISTOGRAM_PERCENTAGE("Histogram1", 50);
RTC_HISTOGRAM_PERCENTAGE("Histogram2", 8);
EXPECT_EQ(1, metrics::NumSamples("Histogram1"));
EXPECT_EQ(1, metrics::NumSamples("Histogram2"));
EXPECT_EQ(1, metrics::NumEvents("Histogram1", 50));
EXPECT_EQ(1, metrics::NumEvents("Histogram2", 8));
}
TEST_F(MetricsDefaultTest, TestMinMaxBucket) {
const std::string kName = "MinMaxCounts100";
RTC_HISTOGRAM_COUNTS_100(kName, 4);
std::map<std::string, std::unique_ptr<metrics::SampleInfo>> histograms;
metrics::GetAndReset(&histograms);
EXPECT_EQ(1u, histograms.size());
EXPECT_EQ(kName, histograms.begin()->second->name);
EXPECT_EQ(1, histograms.begin()->second->min);
EXPECT_EQ(100, histograms.begin()->second->max);
EXPECT_EQ(50u, histograms.begin()->second->bucket_count);
EXPECT_EQ(1u, histograms.begin()->second->samples.size());
}
} // namespace webrtc