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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/performance_manager/graph/properties.h"
#include "base/observer_list.h"
#include "base/observer_list_types.h"
#include "base/test/gtest_util.h"
#include "testing/gmock/include/gmock/gmock.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace performance_manager {
namespace {
class DummyNode;
class DummyObserver : public base::CheckedObserver {
public:
DummyObserver() = default;
~DummyObserver() override = default;
MOCK_METHOD(void, NotifyAlwaysConst, (const DummyNode*));
MOCK_METHOD(void, NotifyOnlyOnChangesConst, (const DummyNode*));
MOCK_METHOD(void,
NotifyOnlyOnChangesWithPreviousValueConst,
(const DummyNode*, bool));
};
class DummyNode {
public:
DummyNode() = default;
~DummyNode() = default;
void AddObserver(DummyObserver* observer) {
observers_.AddObserver(observer);
}
void RemoveObserver(DummyObserver* observer) {
observers_.RemoveObserver(observer);
}
// Fulfills ObservedProperty contract.
const base::ObserverList<DummyObserver>& GetObservers() { return observers_; }
bool CanSetProperty() const { return can_set_; }
bool CanSetAndNotifyProperty() const { return can_set_; }
void set_can_set(bool can_set) { can_set_ = can_set; }
bool observed_always() const { return observed_always_.value(); }
bool observed_only_on_changes() const {
return observed_only_on_changes_.value();
}
bool observed_only_on_changes_with_previous_value() const {
return observed_only_on_changes_with_previous_value_.value();
}
void SetObservedAlwaysNoNotification(bool value) {
observed_always_.Set(this, value);
}
void SetObservedAlways(bool value) {
observed_always_.SetAndNotify(this, value);
}
bool SetObservedOnlyOnChanges(bool value) {
return observed_only_on_changes_.SetAndMaybeNotify(this, value);
}
bool SetObservedOnlyOnChangesWithPreviousValue(bool value) {
return observed_only_on_changes_with_previous_value_.SetAndMaybeNotify(
this, value);
}
private:
using ObservedProperty =
ObservedPropertyImpl<DummyNode, DummyNode, DummyObserver>;
ObservedProperty::NotifiesAlways<bool, &DummyObserver::NotifyAlwaysConst>
observed_always_{false};
ObservedProperty::
NotifiesOnlyOnChanges<bool, &DummyObserver::NotifyOnlyOnChangesConst>
observed_only_on_changes_{false};
ObservedProperty::NotifiesOnlyOnChangesWithPreviousValue<
bool,
bool,
&DummyObserver::NotifyOnlyOnChangesWithPreviousValueConst>
observed_only_on_changes_with_previous_value_{false};
bool can_set_ = true;
base::ObserverList<DummyObserver> observers_;
};
class GraphPropertiesTest : public ::testing::Test {
public:
GraphPropertiesTest() { node_.AddObserver(&observer_); }
~GraphPropertiesTest() override { node_.RemoveObserver(&observer_); }
DummyObserver observer_;
DummyNode node_;
};
using GraphPropertiesDeathTest = GraphPropertiesTest;
} // namespace
TEST_F(GraphPropertiesTest, ObservedAlwaysProperty) {
EXPECT_EQ(false, node_.observed_always());
EXPECT_CALL(observer_, NotifyAlwaysConst(&node_));
node_.SetObservedAlways(false);
testing::Mock::VerifyAndClear(&observer_);
EXPECT_EQ(false, node_.observed_always());
EXPECT_CALL(observer_, NotifyAlwaysConst(&node_));
node_.SetObservedAlways(true);
testing::Mock::VerifyAndClear(&observer_);
EXPECT_EQ(true, node_.observed_always());
EXPECT_CALL(observer_, NotifyAlwaysConst(&node_));
node_.SetObservedAlways(true);
testing::Mock::VerifyAndClear(&observer_);
EXPECT_EQ(true, node_.observed_always());
testing::Mock::VerifyAndClear(&observer_);
}
TEST_F(GraphPropertiesTest, ObservedOnlyOnChangesProperty) {
EXPECT_EQ(false, node_.observed_only_on_changes());
EXPECT_FALSE(node_.SetObservedOnlyOnChanges(false));
EXPECT_EQ(false, node_.observed_only_on_changes());
EXPECT_CALL(observer_, NotifyOnlyOnChangesConst(&node_));
EXPECT_TRUE(node_.SetObservedOnlyOnChanges(true));
testing::Mock::VerifyAndClear(&observer_);
EXPECT_EQ(true, node_.observed_only_on_changes());
EXPECT_FALSE(node_.SetObservedOnlyOnChanges(true));
EXPECT_EQ(true, node_.observed_only_on_changes());
testing::Mock::VerifyAndClear(&observer_);
}
TEST_F(GraphPropertiesTest, ObservedOnlyOnChangesWithPreviousValueProperty) {
EXPECT_FALSE(node_.observed_only_on_changes_with_previous_value());
EXPECT_FALSE(node_.SetObservedOnlyOnChangesWithPreviousValue(false));
EXPECT_EQ(false, node_.observed_only_on_changes_with_previous_value());
EXPECT_CALL(observer_,
NotifyOnlyOnChangesWithPreviousValueConst(&node_, false));
EXPECT_TRUE(node_.SetObservedOnlyOnChangesWithPreviousValue(true));
testing::Mock::VerifyAndClear(&observer_);
EXPECT_EQ(true, node_.observed_only_on_changes_with_previous_value());
EXPECT_FALSE(node_.SetObservedOnlyOnChangesWithPreviousValue(true));
EXPECT_EQ(true, node_.observed_only_on_changes_with_previous_value());
testing::Mock::VerifyAndClear(&observer_);
}
TEST_F(GraphPropertiesDeathTest, DeathOnInvalidSet) {
node_.set_can_set(false);
EXPECT_DCHECK_DEATH(node_.SetObservedAlwaysNoNotification(true));
EXPECT_DCHECK_DEATH(node_.SetObservedAlways(true));
EXPECT_DCHECK_DEATH(node_.SetObservedOnlyOnChanges(true));
EXPECT_DCHECK_DEATH(node_.SetObservedOnlyOnChangesWithPreviousValue(true));
}
} // namespace performance_manager
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