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// Copyright 2020 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/performance_manager/test_support/page_discarding_utils.h"
#include <utility>
#include "base/time/time.h"
#include "chrome/browser/performance_manager/policies/page_discarding_helper.h"
#include "components/performance_manager/decorators/page_aggregator.h"
#include "components/performance_manager/graph/frame_node_impl.h"
#include "components/performance_manager/graph/graph_impl.h"
#include "components/performance_manager/graph/page_node_impl.h"
#include "components/performance_manager/public/decorators/page_live_state_decorator.h"
#include "components/performance_manager/public/user_tuning/prefs.h"
#include "components/performance_manager/test_support/graph_test_harness.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace performance_manager::testing {
void MakePageNodeDiscardable(PageNodeImpl* page_node,
content::BrowserTaskEnvironment& task_env) {
using CanDiscardResult = policies::CanDiscardResult;
using DiscardReason = policies::DiscardEligibilityPolicy::DiscardReason;
page_node->SetIsVisible(false);
page_node->SetIsAudible(false);
page_node->SetType(PageType::kTab);
const auto kUrl = GURL("https://foo.com");
page_node->OnMainFrameNavigationCommitted(
false, base::TimeTicks::Now(), 42, kUrl, "text/html",
/*notification_permission_status=*/blink::mojom::PermissionStatus::ASK);
(*page_node->main_frame_nodes().begin())
->OnNavigationCommitted(kUrl, url::Origin::Create(kUrl),
/*same_document=*/false,
/*is_served_from_back_forward_cache=*/false);
task_env.FastForwardBy(base::Minutes(10));
const auto* eligibility_policy =
policies::DiscardEligibilityPolicy::GetFromGraph(page_node->graph());
CHECK_EQ(eligibility_policy->CanDiscard(page_node, DiscardReason::URGENT),
CanDiscardResult::kEligible);
CHECK_EQ(eligibility_policy->CanDiscard(page_node, DiscardReason::PROACTIVE),
CanDiscardResult::kEligible);
CHECK_EQ(eligibility_policy->CanDiscard(page_node, DiscardReason::EXTERNAL),
CanDiscardResult::kEligible);
CHECK_EQ(eligibility_policy->CanDiscard(page_node, DiscardReason::SUGGESTED),
CanDiscardResult::kEligible);
}
GraphTestHarnessWithDiscardablePage::GraphTestHarnessWithDiscardablePage()
: GraphTestHarness(base::test::TaskEnvironment::TimeSource::MOCK_TIME) {}
GraphTestHarnessWithDiscardablePage::~GraphTestHarnessWithDiscardablePage() =
default;
void GraphTestHarnessWithDiscardablePage::SetUp() {
// Some tests depends on the existence of the PageAggregator.
GetGraphFeatures().EnablePageAggregator();
GraphTestHarness::SetUp();
// The discarding logic relies on the existence of the page live state data.
graph()->PassToGraph(std::make_unique<PageLiveStateDecorator>());
// The DiscardEligibilityPolicy usually keeps track of the relevant patterns
// on profile creation and deletion. Since no profile is involved in this kind
// of test, add an empty patterns list associated with the "empty string"
// browser context ID, which is the one used by default for new PageNodes.
auto eligibility_policy =
std::make_unique<policies::DiscardEligibilityPolicy>();
eligibility_policy->SetNoDiscardPatternsForProfile("", {});
graph()->PassToGraph(std::move(eligibility_policy));
// Create a PageNode and make it discardable.
RecreateNodes();
}
void GraphTestHarnessWithDiscardablePage::TearDown() {
main_frame_node_.reset();
page_node_.reset();
process_node_.reset();
GraphTestHarness::TearDown();
}
void GraphTestHarnessWithDiscardablePage::RecreateNodes() {
main_frame_node_.reset();
page_node_.reset();
process_node_.reset();
process_node_ = CreateNode<performance_manager::ProcessNodeImpl>();
page_node_ = CreateNode<performance_manager::PageNodeImpl>();
main_frame_node_ =
CreateFrameNodeAutoId(process_node_.get(), page_node_.get());
MakePageNodeDiscardable(page_node(), task_env());
}
#if !BUILDFLAG(IS_ANDROID)
LenientMockPageDiscarder::LenientMockPageDiscarder() = default;
LenientMockPageDiscarder::~LenientMockPageDiscarder() = default;
std::optional<uint64_t> LenientMockPageDiscarder::DiscardPageNode(
const PageNode* page_node,
::mojom::LifecycleUnitDiscardReason discard_reason) {
if (DiscardPageNodeImpl(page_node)) {
// Discard success: Return a non-nullopt estimated memory freed.
return 0;
}
// Discard failure: return nullopt;
return std::nullopt;
}
GraphTestHarnessWithMockDiscarder::GraphTestHarnessWithMockDiscarder() =
default;
GraphTestHarnessWithMockDiscarder::~GraphTestHarnessWithMockDiscarder() =
default;
void GraphTestHarnessWithMockDiscarder::SetUp() {
GraphTestHarnessWithDiscardablePage::SetUp();
performance_manager::user_tuning::prefs::RegisterLocalStatePrefs(
local_state_.registry());
user_performance_tuning_manager_environment_.SetUp(&local_state_);
// Make the policy use a mock PageDiscarder.
auto mock_discarder = std::make_unique<MockPageDiscarder>();
mock_discarder_ = mock_discarder.get();
// Create the helper and pass it to the graph.
auto page_discarding_helper =
std::make_unique<policies::PageDiscardingHelper>();
page_discarding_helper->SetMockDiscarderForTesting(std::move(mock_discarder));
graph()->PassToGraph(std::move(page_discarding_helper));
DCHECK(policies::PageDiscardingHelper::GetFromGraph(graph()));
}
void GraphTestHarnessWithMockDiscarder::TearDown() {
user_performance_tuning_manager_environment_.TearDown();
GraphTestHarnessWithDiscardablePage::TearDown();
}
#endif // !BUILDFLAG(IS_ANDROID)
} // namespace performance_manager::testing
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