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// Copyright 2025 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "content/browser/accessibility/text_formatting_metrics_android.h"
#include "base/test/metrics/histogram_tester.h"
#include "base/test/task_environment.h"
#include "base/time/time.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace content {
class TextFormattingMetricsAndroidTest : public testing::Test {
public:
TextFormattingMetricsAndroidTest()
: task_environment_(base::test::TaskEnvironment::TimeSource::MOCK_TIME) {}
~TextFormattingMetricsAndroidTest() override = default;
protected:
base::test::TaskEnvironment task_environment_;
base::HistogramTester histogram_tester_;
};
TEST_F(TextFormattingMetricsAndroidTest, RecorderEmitHistograms) {
const base::TimeDelta expected_get_text_duration = base::Microseconds(20);
const base::TimeDelta expected_set_ani_duration = base::Microseconds(30);
const base::TimeDelta expected_total_duration =
expected_get_text_duration + expected_set_ani_duration;
const int expected_text_length = 40;
const bool has_style_data = true;
TextFormattingMetricsRecorder recorder;
recorder.StartTimer(TextFormattingMetric::kTotalDuration);
recorder.StartTimer(TextFormattingMetric::kGetTextContentDuration);
task_environment_.FastForwardBy(expected_get_text_duration);
recorder.StopTimer(TextFormattingMetric::kGetTextContentDuration);
recorder.StartTimer(TextFormattingMetric::kSetAniTextDuration);
task_environment_.FastForwardBy(expected_set_ani_duration);
recorder.StopTimer(TextFormattingMetric::kSetAniTextDuration);
recorder.StopTimer(TextFormattingMetric::kTotalDuration);
recorder.EmitHistograms(expected_text_length, has_style_data);
histogram_tester_.ExpectTotalCount(
kTextFormattingGetTextContentDurationMetric, 1);
histogram_tester_.ExpectBucketCount(
kTextFormattingGetTextContentDurationMetric,
expected_get_text_duration.InMicroseconds(), 1);
histogram_tester_.ExpectTotalCount(kTextFormattingSetAniTextDurationMetric,
1);
histogram_tester_.ExpectBucketCount(
kTextFormattingSetAniTextDurationMetric,
expected_set_ani_duration.InMicroseconds(), 1);
histogram_tester_.ExpectTotalCount(kTextFormattingTotalDurationMetric, 1);
histogram_tester_.ExpectBucketCount(kTextFormattingTotalDurationMetric,
expected_total_duration.InMicroseconds(),
1);
EXPECT_EQ(recorder.GetTotalDuration(), expected_total_duration);
histogram_tester_.ExpectTotalCount(kTextFormattingTextLengthMetric, 1);
histogram_tester_.ExpectBucketCount(kTextFormattingTextLengthMetric,
expected_text_length, 1);
}
TEST_F(TextFormattingMetricsAndroidTest, RecorderEmitHistogramsNoStyleData) {
const base::TimeDelta expected_get_text_duration = base::Microseconds(20);
const base::TimeDelta expected_set_ani_duration = base::Microseconds(30);
const base::TimeDelta expected_total_duration =
expected_get_text_duration + expected_set_ani_duration;
const int expected_text_length = 40;
const bool has_style_data = false;
TextFormattingMetricsRecorder recorder;
recorder.StartTimer(TextFormattingMetric::kTotalDuration);
recorder.StartTimer(TextFormattingMetric::kGetTextContentDuration);
task_environment_.FastForwardBy(expected_get_text_duration);
recorder.StopTimer(TextFormattingMetric::kGetTextContentDuration);
recorder.StartTimer(TextFormattingMetric::kSetAniTextDuration);
task_environment_.FastForwardBy(expected_set_ani_duration);
recorder.StopTimer(TextFormattingMetric::kSetAniTextDuration);
recorder.StopTimer(TextFormattingMetric::kTotalDuration);
recorder.EmitHistograms(expected_text_length, has_style_data);
histogram_tester_.ExpectTotalCount(
kTextFormattingGetTextContentDurationNoStyleDataMetric, 1);
histogram_tester_.ExpectBucketCount(
kTextFormattingGetTextContentDurationNoStyleDataMetric,
expected_get_text_duration.InMicroseconds(), 1);
histogram_tester_.ExpectTotalCount(
kTextFormattingSetAniTextDurationNoStyleDataMetric, 1);
histogram_tester_.ExpectBucketCount(
kTextFormattingSetAniTextDurationNoStyleDataMetric,
expected_set_ani_duration.InMicroseconds(), 1);
histogram_tester_.ExpectTotalCount(
kTextFormattingTotalDurationNoStyleDataMetric, 1);
histogram_tester_.ExpectBucketCount(
kTextFormattingTotalDurationNoStyleDataMetric,
expected_total_duration.InMicroseconds(), 1);
EXPECT_EQ(recorder.GetTotalDuration(), expected_total_duration);
histogram_tester_.ExpectTotalCount(kTextFormattingTextLengthNoStyleDataMetric,
1);
histogram_tester_.ExpectBucketCount(
kTextFormattingTextLengthNoStyleDataMetric, expected_text_length, 1);
}
TEST_F(TextFormattingMetricsAndroidTest,
RecordTextFormattingRangeCountsForTextLengthHistogram) {
const std::u16string text = u"hello wonderful amazing world!";
const int ranges_count = 16;
RecordTextFormattingRangeCountsForTextLengthHistogram(text, ranges_count);
histogram_tester_.ExpectTotalCount(
kTextFormattingRangesCountForTextLength26To50Metric, 1);
histogram_tester_.ExpectBucketCount(
kTextFormattingRangesCountForTextLength26To50Metric, ranges_count, 1);
histogram_tester_.ExpectTotalCount(kTextFormattingRangesTotalCountMetric, 1);
histogram_tester_.ExpectBucketCount(kTextFormattingRangesTotalCountMetric,
ranges_count, 1);
}
TEST_F(TextFormattingMetricsAndroidTest,
RecordTextFormattingDurationForRangeCountHistogram) {
const int ranges_count = 16;
const base::TimeDelta delta = base::Microseconds(60);
RecordTextFormattingDurationForRangeCountHistogram(ranges_count, delta);
histogram_tester_.ExpectTotalCount(
kTextFormattingDurationForRangeCount11To20Metric, 1);
histogram_tester_.ExpectBucketCount(
kTextFormattingDurationForRangeCount11To20Metric, delta.InMicroseconds(),
1);
}
} // namespace content
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