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// Copyright 2017 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chrome/browser/android/oom_intervention/oom_intervention_decider.h"
#include "base/strings/string_number_conversions.h"
#include "components/sync_preferences/testing_pref_service_syncable.h"
#include "testing/gtest/include/gtest/gtest.h"
class MockInterventionDeciderDelegate
: public OomInterventionDecider::Delegate {
public:
explicit MockInterventionDeciderDelegate(bool was_clean)
: was_clean_(was_clean) {}
bool WasLastShutdownClean() override { return was_clean_; }
private:
bool was_clean_;
};
class OomInterventionDeciderTest : public testing::Test {
protected:
OomInterventionDeciderTest() {
OomInterventionDecider::RegisterProfilePrefs(prefs_.registry());
}
sync_preferences::TestingPrefServiceSyncable prefs_;
};
TEST_F(OomInterventionDeciderTest, OptOutSingleHost) {
std::string host = "www.example.com";
OomInterventionDecider decider(
std::make_unique<MockInterventionDeciderDelegate>(true), &prefs_);
decider.ClearData();
EXPECT_TRUE(decider.CanTriggerIntervention(host));
EXPECT_FALSE(decider.IsOptedOut(host));
decider.OnInterventionDeclined(host);
EXPECT_FALSE(decider.CanTriggerIntervention(host));
EXPECT_FALSE(decider.IsOptedOut(host));
decider.OnOomDetected(host);
EXPECT_TRUE(decider.CanTriggerIntervention(host));
EXPECT_FALSE(decider.IsOptedOut(host));
decider.OnInterventionDeclined(host);
EXPECT_FALSE(decider.CanTriggerIntervention(host));
EXPECT_TRUE(decider.IsOptedOut(host));
}
TEST_F(OomInterventionDeciderTest, ParmanentlyOptOut) {
OomInterventionDecider decider(
std::make_unique<MockInterventionDeciderDelegate>(true), &prefs_);
decider.ClearData();
std::string not_declined_host = "not_declined_host";
EXPECT_TRUE(decider.CanTriggerIntervention(not_declined_host));
// Put sufficient number of hosts into the blacklist.
for (size_t i = 0; i < OomInterventionDecider::kMaxBlacklistSize; ++i) {
std::string declined_host = "declined_host" + base::NumberToString(i);
decider.OnInterventionDeclined(declined_host);
decider.OnOomDetected(declined_host);
decider.OnInterventionDeclined(declined_host);
}
EXPECT_FALSE(decider.CanTriggerIntervention(not_declined_host));
EXPECT_TRUE(decider.IsOptedOut(not_declined_host));
}
TEST_F(OomInterventionDeciderTest, WasLastShutdownClean) {
std::string host = "www.example.com";
{
// Simulate a clean launch.
OomInterventionDecider decider(
std::make_unique<MockInterventionDeciderDelegate>(true), &prefs_);
decider.ClearData();
EXPECT_TRUE(decider.CanTriggerIntervention(host));
decider.OnInterventionDeclined(host);
EXPECT_FALSE(decider.CanTriggerIntervention(host));
EXPECT_FALSE(decider.IsOptedOut(host));
}
{
// Simulate a launch after a browser crash by passing a delegate which
// returns false when WasLastShutdownClean() is called. |host| will be
// considererd as a host which caused the crash (probably due to OOM).
OomInterventionDecider decider(
std::make_unique<MockInterventionDeciderDelegate>(false), &prefs_);
EXPECT_TRUE(decider.CanTriggerIntervention(host));
decider.OnInterventionDeclined(host);
EXPECT_FALSE(decider.CanTriggerIntervention(host));
EXPECT_TRUE(decider.IsOptedOut(host));
}
}
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