70 lines
2.0 KiB
C++
70 lines
2.0 KiB
C++
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// Copyright (c) 2012 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#include "base/prefs/default_pref_store.h"
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#include "testing/gtest/include/gtest/gtest.h"
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using base::StringValue;
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using base::Value;
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namespace {
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class MockPrefStoreObserver : public PrefStore::Observer {
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public:
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explicit MockPrefStoreObserver(DefaultPrefStore* pref_store);
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virtual ~MockPrefStoreObserver();
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int change_count() {
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return change_count_;
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}
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// PrefStore::Observer implementation:
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virtual void OnPrefValueChanged(const std::string& key) OVERRIDE;
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virtual void OnInitializationCompleted(bool succeeded) OVERRIDE {}
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private:
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DefaultPrefStore* pref_store_;
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int change_count_;
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DISALLOW_COPY_AND_ASSIGN(MockPrefStoreObserver);
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};
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MockPrefStoreObserver::MockPrefStoreObserver(DefaultPrefStore* pref_store)
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: pref_store_(pref_store), change_count_(0) {
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pref_store_->AddObserver(this);
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}
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MockPrefStoreObserver::~MockPrefStoreObserver() {
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pref_store_->RemoveObserver(this);
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}
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void MockPrefStoreObserver::OnPrefValueChanged(const std::string& key) {
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change_count_++;
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}
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} // namespace
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TEST(DefaultPrefStoreTest, NotifyPrefValueChanged) {
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scoped_refptr<DefaultPrefStore> pref_store(new DefaultPrefStore);
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MockPrefStoreObserver observer(pref_store.get());
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std::string kPrefKey("pref_key");
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// Setting a default value shouldn't send a change notification.
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pref_store->SetDefaultValue(kPrefKey,
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scoped_ptr<Value>(new StringValue("foo")));
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EXPECT_EQ(0, observer.change_count());
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// Replacing the default value should send a change notification...
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pref_store->ReplaceDefaultValue(kPrefKey,
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scoped_ptr<Value>(new StringValue("bar")));
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EXPECT_EQ(1, observer.change_count());
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// But only if the value actually changed.
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pref_store->ReplaceDefaultValue(kPrefKey,
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scoped_ptr<Value>(new StringValue("bar")));
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EXPECT_EQ(1, observer.change_count());
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}
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