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// Copyright (c) 2012 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 "components/spellcheck/browser/spellcheck_host_metrics.h"
#include <stddef.h>
#include <memory>
#include "base/macros.h"
#include "base/message_loop/message_loop.h"
#include "base/metrics/histogram_samples.h"
#include "base/metrics/statistics_recorder.h"
#include "base/strings/utf_string_conversions.h"
#include "base/test/histogram_tester.h"
#include "build/build_config.h"
#include "testing/gtest/include/gtest/gtest.h"
#if defined(OS_WIN)
// For version specific disabled tests below (http://crbug.com/230534).
#include "base/win/windows_version.h"
#endif
class SpellcheckHostMetricsTest : public testing::Test {
public:
SpellcheckHostMetricsTest() {
}
static void SetUpTestCase() {
base::StatisticsRecorder::Initialize();
}
void SetUp() override { metrics_.reset(new SpellCheckHostMetrics); }
SpellCheckHostMetrics* metrics() { return metrics_.get(); }
void RecordWordCountsForTesting() { metrics_->RecordWordCounts(); }
private:
base::MessageLoop loop_;
std::unique_ptr<SpellCheckHostMetrics> metrics_;
};
TEST_F(SpellcheckHostMetricsTest, RecordEnabledStats) {
const char kMetricName[] = "SpellCheck.Enabled";
base::HistogramTester histogram_tester1;
metrics()->RecordEnabledStats(false);
histogram_tester1.ExpectBucketCount(kMetricName, 0, 1);
histogram_tester1.ExpectBucketCount(kMetricName, 1, 0);
base::HistogramTester histogram_tester2;
metrics()->RecordEnabledStats(true);
histogram_tester2.ExpectBucketCount(kMetricName, 0, 0);
histogram_tester2.ExpectBucketCount(kMetricName, 1, 1);
}
TEST_F(SpellcheckHostMetricsTest, CustomWordStats) {
#if defined(OS_WIN)
// Failing consistently on Win7. See crbug.com/230534.
if (base::win::GetVersion() >= base::win::VERSION_VISTA)
return;
#endif
SpellCheckHostMetrics::RecordCustomWordCountStats(123);
// Determine if test failures are due the statistics recorder not being
// available or because the histogram just isn't there: crbug.com/230534.
EXPECT_TRUE(base::StatisticsRecorder::IsActive());
base::HistogramTester histogram_tester;
SpellCheckHostMetrics::RecordCustomWordCountStats(23);
histogram_tester.ExpectBucketCount("SpellCheck.CustomWords", 23, 1);
}
TEST_F(SpellcheckHostMetricsTest, RecordWordCountsDiscardsDuplicates) {
// This test ensures that RecordWordCounts only records metrics if they
// have changed from the last invocation.
const char* const histogram_names[] = {
"SpellCheck.CheckedWords", "SpellCheck.MisspelledWords",
"SpellCheck.ReplacedWords", "SpellCheck.UniqueWords",
"SpellCheck.ShownSuggestions"};
// Ensure all histograms exist.
metrics()->RecordCheckedWordStats(base::ASCIIToUTF16("test"), false);
RecordWordCountsForTesting();
// Create the tester, taking a snapshot of current histogram samples.
base::HistogramTester histogram_tester;
// Nothing changed, so this invocation should not affect any histograms.
RecordWordCountsForTesting();
// Get samples for all affected histograms.
for (size_t i = 0; i < arraysize(histogram_names); ++i)
histogram_tester.ExpectTotalCount(histogram_names[i], 0);
}
TEST_F(SpellcheckHostMetricsTest, RecordSpellingServiceStats) {
const char kMetricName[] = "SpellCheck.SpellingService.Enabled";
base::HistogramTester histogram_tester1;
metrics()->RecordSpellingServiceStats(false);
histogram_tester1.ExpectBucketCount(kMetricName, 0, 1);
histogram_tester1.ExpectBucketCount(kMetricName, 1, 0);
base::HistogramTester histogram_tester2;
metrics()->RecordSpellingServiceStats(true);
histogram_tester2.ExpectBucketCount(kMetricName, 0, 0);
histogram_tester2.ExpectBucketCount(kMetricName, 1, 1);
}
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