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/*
* 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 "testing/gtest/include/gtest/gtest.h"
#include "webrtc/system_wrappers/include/metrics.h"
#include "webrtc/test/histogram.h"
namespace webrtc {
namespace {
const int kSample = 22;
const std::string kName = "Name";
void AddSparseSample(const std::string& name, int sample) {
RTC_HISTOGRAM_COUNTS_SPARSE_100(name, sample);
}
#if GTEST_HAS_DEATH_TEST && !defined(WEBRTC_ANDROID)
void AddSample(const std::string& name, int sample) {
RTC_HISTOGRAM_COUNTS_100(name, sample);
}
#endif // GTEST_HAS_DEATH_TEST && !defined(WEBRTC_ANDROID)
} // namespace
TEST(MetricsTest, InitiallyNoSamples) {
test::ClearHistograms();
EXPECT_EQ(0, test::NumHistogramSamples(kName));
EXPECT_EQ(-1, test::LastHistogramSample(kName));
}
TEST(MetricsTest, RtcHistogramPercent_AddSample) {
test::ClearHistograms();
RTC_HISTOGRAM_PERCENTAGE(kName, kSample);
EXPECT_EQ(1, test::NumHistogramSamples(kName));
EXPECT_EQ(kSample, test::LastHistogramSample(kName));
}
TEST(MetricsTest, RtcHistogramEnumeration_AddSample) {
test::ClearHistograms();
RTC_HISTOGRAM_ENUMERATION(kName, kSample, kSample + 1);
EXPECT_EQ(1, test::NumHistogramSamples(kName));
EXPECT_EQ(kSample, test::LastHistogramSample(kName));
}
TEST(MetricsTest, RtcHistogramCountsSparse_AddSample) {
test::ClearHistograms();
RTC_HISTOGRAM_COUNTS_SPARSE_100(kName, kSample);
EXPECT_EQ(1, test::NumHistogramSamples(kName));
EXPECT_EQ(kSample, test::LastHistogramSample(kName));
}
TEST(MetricsTest, RtcHistogramCounts_AddSample) {
test::ClearHistograms();
RTC_HISTOGRAM_COUNTS_100(kName, kSample);
EXPECT_EQ(1, test::NumHistogramSamples(kName));
EXPECT_EQ(kSample, test::LastHistogramSample(kName));
}
TEST(MetricsTest, RtcHistogramCounts_AddMultipleSamples) {
test::ClearHistograms();
const int kNumSamples = 10;
for (int i = 0; i < kNumSamples; ++i) {
RTC_HISTOGRAM_COUNTS_100(kName, i);
}
EXPECT_EQ(kNumSamples, test::NumHistogramSamples(kName));
EXPECT_EQ(kNumSamples - 1, test::LastHistogramSample(kName));
}
TEST(MetricsTest, RtcHistogramSparse_NonConstantNameWorks) {
test::ClearHistograms();
AddSparseSample("Name1", kSample);
AddSparseSample("Name2", kSample);
EXPECT_EQ(1, test::NumHistogramSamples("Name1"));
EXPECT_EQ(1, test::NumHistogramSamples("Name2"));
}
#if GTEST_HAS_DEATH_TEST && !defined(WEBRTC_ANDROID)
TEST(MetricsTest, RtcHistogram_FailsForNonConstantName) {
test::ClearHistograms();
AddSample("Name1", kSample);
EXPECT_DEATH(AddSample("Name2", kSample), "");
}
#endif // GTEST_HAS_DEATH_TEST && !defined(WEBRTC_ANDROID)
} // namespace webrtc
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