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// Copyright 2019 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/memory_pressure/memory_pressure_voter.h"
#include <optional>
#include "base/functional/bind.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace memory_pressure {
namespace {
class TestDelegate
: public memory_pressure::MemoryPressureVoteAggregator::Delegate {
private:
void OnMemoryPressureLevelChanged(
base::MemoryPressureListener::MemoryPressureLevel level) override {}
void OnNotifyListenersRequested() override {}
};
} // namespace
TEST(MemoryPressureVoterTest, EvaluateVotes) {
TestDelegate delegate;
MemoryPressureVoteAggregator aggregator(&delegate);
aggregator.SetVotesForTesting(1, 2, 3);
EXPECT_EQ(aggregator.EvaluateVotesForTesting(),
base::MemoryPressureListener::MEMORY_PRESSURE_LEVEL_CRITICAL);
aggregator.SetVotesForTesting(1, 20, 1);
EXPECT_EQ(aggregator.EvaluateVotesForTesting(),
base::MemoryPressureListener::MEMORY_PRESSURE_LEVEL_CRITICAL);
aggregator.SetVotesForTesting(0, 0, 0);
EXPECT_EQ(aggregator.EvaluateVotesForTesting(),
base::MemoryPressureListener::MEMORY_PRESSURE_LEVEL_NONE);
aggregator.SetVotesForTesting(0, 2, 0);
EXPECT_EQ(aggregator.EvaluateVotesForTesting(),
base::MemoryPressureListener::MEMORY_PRESSURE_LEVEL_MODERATE);
// Reset votes so destructor doesn't think there are loose voters.
aggregator.SetVotesForTesting(0, 0, 0);
}
TEST(MemoryPressureVoterTest, OnVote) {
TestDelegate delegate;
MemoryPressureVoteAggregator aggregator(&delegate);
// vote count = 0,0,0
EXPECT_EQ(aggregator.EvaluateVotesForTesting(),
base::MemoryPressureListener::MEMORY_PRESSURE_LEVEL_NONE);
aggregator.OnVoteForTesting(
std::nullopt, base::MemoryPressureListener::MEMORY_PRESSURE_LEVEL_NONE);
// vote count = 1,0,0
EXPECT_EQ(aggregator.EvaluateVotesForTesting(),
base::MemoryPressureListener::MEMORY_PRESSURE_LEVEL_NONE);
aggregator.OnVoteForTesting(
std::nullopt,
base::MemoryPressureListener::MEMORY_PRESSURE_LEVEL_CRITICAL);
// vote count = 1,0,1
EXPECT_EQ(aggregator.EvaluateVotesForTesting(),
base::MemoryPressureListener::MEMORY_PRESSURE_LEVEL_CRITICAL);
aggregator.OnVoteForTesting(
std::nullopt,
base::MemoryPressureListener::MEMORY_PRESSURE_LEVEL_MODERATE);
// vote count = 1,1,1
EXPECT_EQ(aggregator.EvaluateVotesForTesting(),
base::MemoryPressureListener::MEMORY_PRESSURE_LEVEL_CRITICAL);
aggregator.OnVoteForTesting(
base::MemoryPressureListener::MEMORY_PRESSURE_LEVEL_CRITICAL,
base::MemoryPressureListener::MEMORY_PRESSURE_LEVEL_MODERATE);
// vote count = 1,2,0
EXPECT_EQ(aggregator.EvaluateVotesForTesting(),
base::MemoryPressureListener::MEMORY_PRESSURE_LEVEL_MODERATE);
aggregator.OnVoteForTesting(
base::MemoryPressureListener::MEMORY_PRESSURE_LEVEL_MODERATE,
std::nullopt);
// vote count = 1,1,0
EXPECT_EQ(aggregator.EvaluateVotesForTesting(),
base::MemoryPressureListener::MEMORY_PRESSURE_LEVEL_MODERATE);
// Reset votes so destructor doesn't think there are loose voters.
aggregator.SetVotesForTesting(0, 0, 0);
}
TEST(MemoryPressureVoterTest, SetVote) {
TestDelegate delegate;
MemoryPressureVoteAggregator aggregator(&delegate);
auto voter_critical = aggregator.CreateVoter();
auto voter_moderate = aggregator.CreateVoter();
voter_critical->SetVote(
base::MemoryPressureListener::MEMORY_PRESSURE_LEVEL_CRITICAL, false);
EXPECT_EQ(aggregator.EvaluateVotesForTesting(),
base::MemoryPressureListener::MEMORY_PRESSURE_LEVEL_CRITICAL);
voter_moderate->SetVote(
base::MemoryPressureListener::MEMORY_PRESSURE_LEVEL_MODERATE, false);
EXPECT_EQ(aggregator.EvaluateVotesForTesting(),
base::MemoryPressureListener::MEMORY_PRESSURE_LEVEL_CRITICAL);
voter_critical.reset();
EXPECT_EQ(aggregator.EvaluateVotesForTesting(),
base::MemoryPressureListener::MEMORY_PRESSURE_LEVEL_MODERATE);
voter_moderate.reset();
EXPECT_EQ(aggregator.EvaluateVotesForTesting(),
base::MemoryPressureListener::MEMORY_PRESSURE_LEVEL_NONE);
}
} // namespace memory_pressure
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