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// Copyright 2012 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifdef UNSAFE_BUFFERS_BUILD
// TODO(crbug.com/40285824): Remove this and convert code to safer constructs.
#pragma allow_unsafe_buffers
#endif
#include "components/spellcheck/browser/spellcheck_host_metrics.h"
#include <stddef.h>
#include <array>
#include <memory>
#include "base/metrics/histogram_samples.h"
#include "base/strings/utf_string_conversions.h"
#include "base/test/metrics/histogram_tester.h"
#include "base/test/task_environment.h"
#include "build/build_config.h"
#include "testing/gtest/include/gtest/gtest.h"
class SpellcheckHostMetricsTest : public testing::Test {
public:
SpellcheckHostMetricsTest() {
}
void SetUp() override {
metrics_ = std::make_unique<SpellCheckHostMetrics>();
}
SpellCheckHostMetrics* metrics() { return metrics_.get(); }
void RecordWordCountsForTesting() { metrics_->RecordWordCounts(); }
private:
base::test::SingleThreadTaskEnvironment task_environment_;
std::unique_ptr<SpellCheckHostMetrics> metrics_;
};
TEST_F(SpellcheckHostMetricsTest, RecordEnabledStats) {
const char kMetricName[] = "SpellCheck.Enabled2";
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, RecordWordCountsDiscardsDuplicates) {
// This test ensures that RecordWordCounts only records metrics if they
// have changed from the last invocation.
const auto histogram_names = std::to_array<const char*>({
"SpellCheck.CheckedWords",
"SpellCheck.MisspelledWords",
"SpellCheck.ReplacedWords",
"SpellCheck.UniqueWords",
"SpellCheck.ShownSuggestions",
});
// Ensure all histograms exist.
metrics()->RecordCheckedWordStats(u"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 < std::size(histogram_names); ++i)
histogram_tester.ExpectTotalCount(histogram_names[i], 0);
}
TEST_F(SpellcheckHostMetricsTest, RecordSpellingServiceStats) {
const char kMetricName[] = "SpellCheck.SpellingService.Enabled2";
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);
}
#if BUILDFLAG(IS_WIN)
TEST_F(SpellcheckHostMetricsTest, RecordAcceptLanguageStats) {
const char* const histogram_names[] = {
"Spellcheck.Windows.ChromeLocalesSupport2.Both",
"Spellcheck.Windows.ChromeLocalesSupport2.HunspellOnly",
"Spellcheck.Windows.ChromeLocalesSupport2.NativeOnly",
"Spellcheck.Windows.ChromeLocalesSupport2.NoSupport"};
const size_t expected_counts[] = {1, 2, 3, 4};
base::HistogramTester histogram_tester;
SpellCheckHostMetrics::RecordAcceptLanguageStats({
expected_counts[0],
expected_counts[1],
expected_counts[2],
expected_counts[3],
});
for (size_t i = 0; i < std::size(histogram_names); ++i) {
histogram_tester.ExpectTotalCount(histogram_names[i], 1);
histogram_tester.ExpectBucketCount(histogram_names[i],
static_cast<int>(expected_counts[i]), 1);
}
}
TEST_F(SpellcheckHostMetricsTest, RecordSpellcheckLanguageStats) {
const char* const histogram_names[] = {
"Spellcheck.Windows.SpellcheckLocalesSupport2.Both",
"Spellcheck.Windows.SpellcheckLocalesSupport2.HunspellOnly",
"Spellcheck.Windows.SpellcheckLocalesSupport2.NativeOnly"};
const size_t expected_counts[] = {1, 2, 3};
base::HistogramTester histogram_tester;
SpellCheckHostMetrics::RecordSpellcheckLanguageStats({
expected_counts[0],
expected_counts[1],
expected_counts[2],
0,
});
for (size_t i = 0; i < std::size(histogram_names); ++i) {
histogram_tester.ExpectTotalCount(histogram_names[i], 1);
histogram_tester.ExpectBucketCount(histogram_names[i],
static_cast<int>(expected_counts[i]), 1);
}
}
#endif // BUILDFLAG(IS_WIN)
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