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// Copyright 2013 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chrome/browser/translate/translate_browser_metrics.h"
#include "base/basictypes.h"
#include "base/memory/scoped_ptr.h"
#include "base/metrics/histogram.h"
#include "base/metrics/histogram_samples.h"
#include "base/metrics/statistics_recorder.h"
#include "testing/gtest/include/gtest/gtest.h"
#include "testing/platform_test.h"
using base::HistogramBase;
using base::HistogramSamples;
using base::StatisticsRecorder;
namespace {
class MetricsRecorder {
public:
explicit MetricsRecorder(const char* key) : key_(key) {
StatisticsRecorder::Initialize();
HistogramBase* histogram = StatisticsRecorder::FindHistogram(key_);
if (histogram)
base_samples_ = histogram->SnapshotSamples();
}
void CheckInitiationStatus(int expected_disabled_by_prefs,
int expected_disabled_by_switch,
int expected_disabled_by_config,
int expected_language_is_not_supported,
int expected_mime_type_is_not_supported,
int expected_url_is_not_supported,
int expected_similar_languages,
int expected_accept_languages,
int expected_auto_by_config,
int expected_auto_by_link,
int expected_show_infobar) {
Snapshot();
EXPECT_EQ(expected_disabled_by_prefs, GetCountWithoutSnapshot(
TranslateBrowserMetrics::INITIATION_STATUS_DISABLED_BY_PREFS));
EXPECT_EQ(expected_disabled_by_switch, GetCountWithoutSnapshot(
TranslateBrowserMetrics::INITIATION_STATUS_DISABLED_BY_SWITCH));
EXPECT_EQ(expected_disabled_by_config, GetCountWithoutSnapshot(
TranslateBrowserMetrics::INITIATION_STATUS_DISABLED_BY_CONFIG));
EXPECT_EQ(expected_language_is_not_supported, GetCountWithoutSnapshot(
TranslateBrowserMetrics::INITIATION_STATUS_LANGUAGE_IS_NOT_SUPPORTED));
EXPECT_EQ(expected_mime_type_is_not_supported, GetCountWithoutSnapshot(
TranslateBrowserMetrics::INITIATION_STATUS_MIME_TYPE_IS_NOT_SUPPORTED));
EXPECT_EQ(expected_url_is_not_supported, GetCountWithoutSnapshot(
TranslateBrowserMetrics::INITIATION_STATUS_URL_IS_NOT_SUPPORTED));
EXPECT_EQ(expected_similar_languages, GetCountWithoutSnapshot(
TranslateBrowserMetrics::INITIATION_STATUS_SIMILAR_LANGUAGES));
EXPECT_EQ(expected_accept_languages, GetCountWithoutSnapshot(
TranslateBrowserMetrics::INITIATION_STATUS_ACCEPT_LANGUAGES));
EXPECT_EQ(expected_auto_by_config, GetCountWithoutSnapshot(
TranslateBrowserMetrics::INITIATION_STATUS_AUTO_BY_CONFIG));
EXPECT_EQ(expected_auto_by_link, GetCountWithoutSnapshot(
TranslateBrowserMetrics::INITIATION_STATUS_AUTO_BY_LINK));
EXPECT_EQ(expected_show_infobar, GetCountWithoutSnapshot(
TranslateBrowserMetrics::INITIATION_STATUS_SHOW_INFOBAR));
}
HistogramBase::Count GetTotalCount() {
Snapshot();
if (!samples_.get())
return 0;
HistogramBase::Count count = samples_->TotalCount();
if (!base_samples_.get())
return count;
return count - base_samples_->TotalCount();
}
HistogramBase::Count GetCount(HistogramBase::Sample value) {
Snapshot();
return GetCountWithoutSnapshot(value);
}
private:
void Snapshot() {
HistogramBase* histogram = StatisticsRecorder::FindHistogram(key_);
if (!histogram)
return;
samples_ = histogram->SnapshotSamples();
}
HistogramBase::Count GetCountWithoutSnapshot(HistogramBase::Sample value) {
if (!samples_.get())
return 0;
HistogramBase::Count count = samples_->GetCount(value);
if (!base_samples_.get())
return count;
return count - base_samples_->GetCount(value);
}
std::string key_;
scoped_ptr<HistogramSamples> base_samples_;
scoped_ptr<HistogramSamples> samples_;
DISALLOW_COPY_AND_ASSIGN(MetricsRecorder);
};
} // namespace
TEST(TranslateBrowserMetricsTest, ReportInitiationStatus) {
MetricsRecorder recorder(TranslateBrowserMetrics::GetMetricsName(
TranslateBrowserMetrics::UMA_INITIATION_STATUS));
recorder.CheckInitiationStatus(0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0);
TranslateBrowserMetrics::ReportInitiationStatus(
TranslateBrowserMetrics::INITIATION_STATUS_DISABLED_BY_PREFS);
recorder.CheckInitiationStatus(1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0);
TranslateBrowserMetrics::ReportInitiationStatus(
TranslateBrowserMetrics::INITIATION_STATUS_DISABLED_BY_SWITCH);
recorder.CheckInitiationStatus(1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0);
TranslateBrowserMetrics::ReportInitiationStatus(
TranslateBrowserMetrics::INITIATION_STATUS_DISABLED_BY_CONFIG);
recorder.CheckInitiationStatus(1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0);
TranslateBrowserMetrics::ReportInitiationStatus(
TranslateBrowserMetrics::INITIATION_STATUS_LANGUAGE_IS_NOT_SUPPORTED);
recorder.CheckInitiationStatus(1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0);
TranslateBrowserMetrics::ReportInitiationStatus(
TranslateBrowserMetrics::INITIATION_STATUS_MIME_TYPE_IS_NOT_SUPPORTED);
recorder.CheckInitiationStatus(1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0);
TranslateBrowserMetrics::ReportInitiationStatus(
TranslateBrowserMetrics::INITIATION_STATUS_URL_IS_NOT_SUPPORTED);
recorder.CheckInitiationStatus(1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0);
TranslateBrowserMetrics::ReportInitiationStatus(
TranslateBrowserMetrics::INITIATION_STATUS_SIMILAR_LANGUAGES);
recorder.CheckInitiationStatus(1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0);
TranslateBrowserMetrics::ReportInitiationStatus(
TranslateBrowserMetrics::INITIATION_STATUS_ACCEPT_LANGUAGES);
recorder.CheckInitiationStatus(1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0);
TranslateBrowserMetrics::ReportInitiationStatus(
TranslateBrowserMetrics::INITIATION_STATUS_AUTO_BY_CONFIG);
recorder.CheckInitiationStatus(1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0);
TranslateBrowserMetrics::ReportInitiationStatus(
TranslateBrowserMetrics::INITIATION_STATUS_AUTO_BY_LINK);
recorder.CheckInitiationStatus(1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0);
TranslateBrowserMetrics::ReportInitiationStatus(
TranslateBrowserMetrics::INITIATION_STATUS_SHOW_INFOBAR);
recorder.CheckInitiationStatus(1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1);
}
TEST(TranslateBrowserMetricsTest, ReportLanguageDetectionError) {
MetricsRecorder recorder(TranslateBrowserMetrics::GetMetricsName(
TranslateBrowserMetrics::UMA_LANGUAGE_DETECTION_ERROR));
EXPECT_EQ(0, recorder.GetTotalCount());
TranslateBrowserMetrics::ReportLanguageDetectionError();
EXPECT_EQ(1, recorder.GetTotalCount());
}
TEST(TranslateBrowserMetricsTest, ReportedLocalesOnDisabledByPrefs) {
const int ENGLISH = 25966;
MetricsRecorder recorder(TranslateBrowserMetrics::GetMetricsName(
TranslateBrowserMetrics::UMA_LOCALES_ON_DISABLED_BY_PREFS));
EXPECT_EQ(0, recorder.GetTotalCount());
TranslateBrowserMetrics::ReportLocalesOnDisabledByPrefs("en");
EXPECT_EQ(1, recorder.GetCount(ENGLISH));
}
TEST(TranslateBrowserMetricsTest, ReportedUndisplayableLanguage) {
const int ENGLISH = 25966;
MetricsRecorder recorder(TranslateBrowserMetrics::GetMetricsName(
TranslateBrowserMetrics::UMA_UNDISPLAYABLE_LANGUAGE));
EXPECT_EQ(0, recorder.GetTotalCount());
TranslateBrowserMetrics::ReportUndisplayableLanguage("en");
EXPECT_EQ(1, recorder.GetCount(ENGLISH));
}
TEST(TranslateBrowserMetricsTest, ReportedUnsupportedLanguageAtInitiation) {
const int ENGLISH = 25966;
MetricsRecorder recorder(TranslateBrowserMetrics::GetMetricsName(
TranslateBrowserMetrics::UMA_UNSUPPORTED_LANGUAGE_AT_INITIATION));
EXPECT_EQ(0, recorder.GetTotalCount());
TranslateBrowserMetrics::ReportUnsupportedLanguageAtInitiation("en");
EXPECT_EQ(1, recorder.GetCount(ENGLISH));
}
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