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// Copyright 2021 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "components/page_load_metrics/browser/responsiveness_metrics_normalization.h"
#include "base/test/scoped_feature_list.h"
#include "components/page_load_metrics/common/page_load_metrics.mojom.h"
#include "testing/gtest/include/gtest/gtest.h"
using UserInteractionLatenciesPtr =
page_load_metrics::mojom::UserInteractionLatenciesPtr;
using UserInteractionLatencies =
page_load_metrics::mojom::UserInteractionLatencies;
using UserInteractionLatency = page_load_metrics::mojom::UserInteractionLatency;
class ResponsivenessMetricsNormalizationTest : public testing::Test {
public:
ResponsivenessMetricsNormalizationTest() = default;
void AddNewUserInteractions(uint64_t num_new_interactions,
UserInteractionLatencies& max_event_durations) {
responsiveness_metrics_normalization_.AddNewUserInteractionLatencies(
num_new_interactions, max_event_durations);
}
uint64_t GetNumInteractions() {
return responsiveness_metrics_normalization_.num_user_interactions();
}
UserInteractionLatency GetWorstInteraction() {
return responsiveness_metrics_normalization_.worst_latency().value();
}
UserInteractionLatency GetHighPercentileInteraction() {
return responsiveness_metrics_normalization_.ApproximateHighPercentile()
.value();
}
private:
page_load_metrics::ResponsivenessMetricsNormalization
responsiveness_metrics_normalization_;
};
TEST_F(ResponsivenessMetricsNormalizationTest, SendAllInteractions) {
// Check that we get the correct count, worst, and high percentile
// with 3 interactions.
UserInteractionLatenciesPtr user_interaction_latencies_ptr =
UserInteractionLatencies::NewUserInteractionLatencies({});
auto& user_interaction_latencies =
user_interaction_latencies_ptr->get_user_interaction_latencies();
base::TimeTicks current_time = base::TimeTicks::Now();
user_interaction_latencies.emplace_back(UserInteractionLatency::New(
base::Milliseconds(3000), 0, current_time + base::Milliseconds(1000)));
user_interaction_latencies.emplace_back(UserInteractionLatency::New(
base::Milliseconds(3500), 1, current_time + base::Milliseconds(2000)));
user_interaction_latencies.emplace_back(UserInteractionLatency::New(
base::Milliseconds(2000), 2, current_time + base::Milliseconds(3000)));
AddNewUserInteractions(3, *user_interaction_latencies_ptr);
EXPECT_EQ(GetNumInteractions(), 3u);
EXPECT_EQ(GetWorstInteraction().interaction_latency,
base::Milliseconds(3500));
EXPECT_EQ(GetWorstInteraction().interaction_offset, 1u);
EXPECT_EQ(GetWorstInteraction().interaction_time,
current_time + base::Milliseconds(2000));
EXPECT_EQ(GetHighPercentileInteraction().interaction_latency,
base::Milliseconds(3500));
EXPECT_EQ(GetHighPercentileInteraction().interaction_offset, 1u);
EXPECT_EQ(GetHighPercentileInteraction().interaction_time,
current_time + base::Milliseconds(2000));
// After adding 50 additional interactions, the high percentile should shift
// to the second highest interaction duration.
user_interaction_latencies.clear();
for (uint64_t i = 0; i < 50; i++) {
user_interaction_latencies.emplace_back(UserInteractionLatency::New(
base::Milliseconds(i + 100), i + 3,
current_time + base::Milliseconds(4000 + (1000 * i))));
}
AddNewUserInteractions(50, *user_interaction_latencies_ptr);
EXPECT_EQ(GetNumInteractions(), 53u);
EXPECT_EQ(GetWorstInteraction().interaction_latency,
base::Milliseconds(3500));
EXPECT_EQ(GetWorstInteraction().interaction_offset, 1u);
EXPECT_EQ(GetWorstInteraction().interaction_time,
current_time + base::Milliseconds(2000));
EXPECT_EQ(GetHighPercentileInteraction().interaction_latency,
base::Milliseconds(3000));
EXPECT_EQ(GetHighPercentileInteraction().interaction_offset, 0u);
EXPECT_EQ(GetHighPercentileInteraction().interaction_time,
current_time + base::Milliseconds(1000));
// After adding 50 more interactions, the high percentile should shift
// to the third highest interaction duration.
user_interaction_latencies.clear();
for (uint64_t i = 0; i < 50; i++) {
user_interaction_latencies.emplace_back(UserInteractionLatency::New(
base::Milliseconds(300 - i), i + 53,
current_time + base::Milliseconds(53000 + (1000 * i))));
}
AddNewUserInteractions(50, *user_interaction_latencies_ptr);
EXPECT_EQ(GetNumInteractions(), 103u);
EXPECT_EQ(GetWorstInteraction().interaction_latency,
base::Milliseconds(3500));
EXPECT_EQ(GetWorstInteraction().interaction_offset, 1u);
EXPECT_EQ(GetWorstInteraction().interaction_time,
current_time + base::Milliseconds(2000));
EXPECT_EQ(GetHighPercentileInteraction().interaction_latency,
base::Milliseconds(2000));
EXPECT_EQ(GetHighPercentileInteraction().interaction_offset, 2u);
EXPECT_EQ(GetHighPercentileInteraction().interaction_time,
current_time + base::Milliseconds(3000));
}
TEST_F(ResponsivenessMetricsNormalizationTest, TooManyInteractions) {
// Test what happens when there are so many interactions that the INP index
// goes out of the worst_ten_latencies_ bounds.
base::TimeTicks current_time = base::TimeTicks::Now();
for (uint64_t i = 0; i < 500; i++) {
UserInteractionLatenciesPtr user_interaction_latencies_ptr =
UserInteractionLatencies::NewUserInteractionLatencies({});
auto& user_interaction_latencies =
user_interaction_latencies_ptr->get_user_interaction_latencies();
user_interaction_latencies.emplace_back(
UserInteractionLatency::New(base::Milliseconds(3000 - i), i * 2,
current_time + base::Milliseconds(1000)));
user_interaction_latencies.emplace_back(
UserInteractionLatency::New(base::Milliseconds(2000 - (i)), (i * 2) + i,
current_time + base::Milliseconds(1100)));
AddNewUserInteractions(2, *user_interaction_latencies_ptr);
}
EXPECT_EQ(GetNumInteractions(), 1000u);
EXPECT_EQ(GetWorstInteraction().interaction_latency,
base::Milliseconds(3000));
EXPECT_EQ(GetHighPercentileInteraction().interaction_latency,
base::Milliseconds(2991));
}
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