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// Copyright 2017 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chrome/browser/metrics/tab_stats/tab_stats_data_store.h"
#include <memory>
#include "chrome/browser/metrics/tab_stats/tab_stats_tracker.h"
#include "chrome/test/base/chrome_render_view_host_test_harness.h"
#include "components/prefs/pref_registry_simple.h"
#include "components/prefs/testing_pref_service.h"
#include "content/public/browser/visibility.h"
#include "content/public/browser/web_contents.h"
#include "content/public/test/web_contents_tester.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace metrics {
namespace {
using TabsStats = TabStatsDataStore::TabsStats;
class TabStatsDataStoreTest : public ChromeRenderViewHostTestHarness {
protected:
TabStatsDataStoreTest() {
TabStatsTracker::RegisterPrefs(pref_service_.registry());
data_store_ = std::make_unique<TabStatsDataStore>(&pref_service_);
}
TestingPrefServiceSimple pref_service_;
std::unique_ptr<TabStatsDataStore> data_store_;
};
} // namespace
TEST_F(TabStatsDataStoreTest, TabStatsGetsReloadedFromLocalState) {
// This tests creates add some tabs/windows to a data store instance and then
// reinitializes it (and so the count of active tabs/windows drops to zero).
// As the TabStatsTracker constructor restores its state from the pref service
// the maximums should be restored.
size_t expected_tab_count = 12;
std::vector<std::unique_ptr<content::WebContents>> test_web_contents_vec;
for (size_t i = 0; i < expected_tab_count; ++i) {
test_web_contents_vec.emplace_back(CreateTestWebContents());
data_store_->OnTabAdded(test_web_contents_vec.back().get());
}
size_t expected_window_count = 5;
for (size_t i = 0; i < expected_window_count; ++i)
data_store_->OnWindowAdded();
size_t expected_max_tab_per_window = expected_tab_count - 1;
data_store_->UpdateMaxTabsPerWindowIfNeeded(expected_max_tab_per_window);
TabsStats stats = data_store_->tab_stats();
EXPECT_EQ(expected_tab_count, stats.total_tab_count_max);
EXPECT_EQ(expected_max_tab_per_window, stats.max_tab_per_window);
EXPECT_EQ(expected_window_count, stats.window_count_max);
// Reset the |tab_stats_tracker_| and ensure that the maximums are restored.
data_store_ = std::make_unique<TabStatsDataStore>(&pref_service_);
TabsStats stats2 = data_store_->tab_stats();
EXPECT_EQ(stats.total_tab_count_max, stats2.total_tab_count_max);
EXPECT_EQ(stats.max_tab_per_window, stats2.max_tab_per_window);
EXPECT_EQ(stats.window_count_max, stats2.window_count_max);
// The actual number of tabs/window should be 0 as it's not stored in the
// pref service.
EXPECT_EQ(0U, stats2.window_count);
EXPECT_EQ(0U, stats2.total_tab_count);
}
TEST_F(TabStatsDataStoreTest, DiscardsFromLocalState) {
// This test updates the discard/reload counts to a data store instance and
// then reinitialize it. The data store instance should restore the discard
// and reload counts from the pref service.
constexpr size_t kExpectedDiscardsExternal = 1;
constexpr size_t kExpectedDiscardsUrgent = 2;
constexpr size_t kExpectedDiscardsProactive = 3;
constexpr size_t kExpectedDiscardsSuggested = 4;
constexpr size_t kExpectedDiscardsFrozenWithGrowingMemory = 5;
constexpr size_t kExpectedReloadsExternal = 6;
constexpr size_t kExpectedReloadsUrgent = 7;
constexpr size_t kExpectedReloadsProactive = 8;
constexpr size_t kExpectedReloadsSuggested = 9;
constexpr size_t kExpectedReloadsFrozenWithGrowingMemory = 10;
for (size_t i = 0; i < kExpectedDiscardsExternal; ++i) {
data_store_->OnTabDiscardStateChange(LifecycleUnitDiscardReason::EXTERNAL,
/*is_discarded=*/true);
}
for (size_t i = 0; i < kExpectedDiscardsUrgent; ++i) {
data_store_->OnTabDiscardStateChange(LifecycleUnitDiscardReason::URGENT,
/*is_discarded=*/true);
}
for (size_t i = 0; i < kExpectedDiscardsProactive; ++i) {
data_store_->OnTabDiscardStateChange(LifecycleUnitDiscardReason::PROACTIVE,
/*is_discarded=*/true);
}
for (size_t i = 0; i < kExpectedDiscardsSuggested; ++i) {
data_store_->OnTabDiscardStateChange(LifecycleUnitDiscardReason::SUGGESTED,
/*is_discarded=*/true);
}
for (size_t i = 0; i < kExpectedDiscardsFrozenWithGrowingMemory; ++i) {
data_store_->OnTabDiscardStateChange(
LifecycleUnitDiscardReason::FROZEN_WITH_GROWING_MEMORY,
/*is_discarded=*/true);
}
for (size_t i = 0; i < kExpectedReloadsExternal; ++i) {
data_store_->OnTabDiscardStateChange(LifecycleUnitDiscardReason::EXTERNAL,
/*is_discarded=*/false);
}
for (size_t i = 0; i < kExpectedReloadsUrgent; ++i) {
data_store_->OnTabDiscardStateChange(LifecycleUnitDiscardReason::URGENT,
/*is_discarded=*/false);
}
for (size_t i = 0; i < kExpectedReloadsProactive; ++i) {
data_store_->OnTabDiscardStateChange(LifecycleUnitDiscardReason::PROACTIVE,
/*is_discarded=*/false);
}
for (size_t i = 0; i < kExpectedReloadsSuggested; ++i) {
data_store_->OnTabDiscardStateChange(LifecycleUnitDiscardReason::SUGGESTED,
/*is_discarded=*/false);
}
for (size_t i = 0; i < kExpectedReloadsFrozenWithGrowingMemory; ++i) {
data_store_->OnTabDiscardStateChange(
LifecycleUnitDiscardReason::FROZEN_WITH_GROWING_MEMORY,
/*is_discarded=*/false);
}
const size_t external =
static_cast<size_t>(LifecycleUnitDiscardReason::EXTERNAL);
const size_t urgent = static_cast<size_t>(LifecycleUnitDiscardReason::URGENT);
const size_t proactive =
static_cast<size_t>(LifecycleUnitDiscardReason::PROACTIVE);
const size_t suggested =
static_cast<size_t>(LifecycleUnitDiscardReason::SUGGESTED);
const size_t frozen_with_growing_memory = static_cast<size_t>(
LifecycleUnitDiscardReason::FROZEN_WITH_GROWING_MEMORY);
TabsStats stats = data_store_->tab_stats();
EXPECT_EQ(kExpectedDiscardsExternal, stats.tab_discard_counts[external]);
EXPECT_EQ(kExpectedDiscardsUrgent, stats.tab_discard_counts[urgent]);
EXPECT_EQ(kExpectedDiscardsProactive, stats.tab_discard_counts[proactive]);
EXPECT_EQ(kExpectedDiscardsSuggested, stats.tab_discard_counts[suggested]);
EXPECT_EQ(kExpectedDiscardsFrozenWithGrowingMemory,
stats.tab_discard_counts[frozen_with_growing_memory]);
EXPECT_EQ(kExpectedReloadsExternal, stats.tab_reload_counts[external]);
EXPECT_EQ(kExpectedReloadsUrgent, stats.tab_reload_counts[urgent]);
EXPECT_EQ(kExpectedReloadsProactive, stats.tab_reload_counts[proactive]);
EXPECT_EQ(kExpectedReloadsSuggested, stats.tab_reload_counts[suggested]);
EXPECT_EQ(kExpectedReloadsFrozenWithGrowingMemory,
stats.tab_reload_counts[frozen_with_growing_memory]);
// Resets the |data_store_| and checks discard/reload counters are restored.
data_store_ = std::make_unique<TabStatsDataStore>(&pref_service_);
TabsStats stats2 = data_store_->tab_stats();
EXPECT_EQ(kExpectedDiscardsExternal, stats2.tab_discard_counts[external]);
EXPECT_EQ(kExpectedDiscardsUrgent, stats2.tab_discard_counts[urgent]);
EXPECT_EQ(kExpectedDiscardsProactive, stats2.tab_discard_counts[proactive]);
EXPECT_EQ(kExpectedDiscardsSuggested, stats2.tab_discard_counts[suggested]);
EXPECT_EQ(kExpectedDiscardsFrozenWithGrowingMemory,
stats2.tab_discard_counts[frozen_with_growing_memory]);
EXPECT_EQ(kExpectedReloadsExternal, stats2.tab_reload_counts[external]);
EXPECT_EQ(kExpectedReloadsUrgent, stats2.tab_reload_counts[urgent]);
EXPECT_EQ(kExpectedReloadsProactive, stats2.tab_reload_counts[proactive]);
EXPECT_EQ(kExpectedReloadsSuggested, stats2.tab_reload_counts[suggested]);
EXPECT_EQ(kExpectedReloadsFrozenWithGrowingMemory,
stats2.tab_reload_counts[frozen_with_growing_memory]);
}
} // namespace metrics
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