// Copyright (c) 2011 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 "base/prefs/pref_member.h"
#include "base/bind.h"
#include "base/message_loop/message_loop.h"
#include "base/prefs/pref_registry_simple.h"
#include "base/prefs/testing_pref_service.h"
#include "base/synchronization/waitable_event.h"
#include "base/threading/thread.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace {
const char kBoolPref[] = "bool";
const char kIntPref[] = "int";
const char kDoublePref[] = "double";
const char kStringPref[] = "string";
const char kStringListPref[] = "string_list";
void RegisterTestPrefs(PrefRegistrySimple* registry) {
registry->RegisterBooleanPref(kBoolPref, false);
registry->RegisterIntegerPref(kIntPref, 0);
registry->RegisterDoublePref(kDoublePref, 0.0);
registry->RegisterStringPref(kStringPref, "default");
registry->RegisterListPref(kStringListPref, new base::ListValue());
}
class GetPrefValueHelper
: public base::RefCountedThreadSafe<GetPrefValueHelper> {
public:
GetPrefValueHelper() : value_(false), pref_thread_("pref thread") {
pref_thread_.Start();
}
void Init(const char* pref_name, PrefService* prefs) {
pref_.Init(pref_name, prefs);
pref_.MoveToThread(pref_thread_.message_loop_proxy());
}
void Destroy() {
pref_.Destroy();
}
void FetchValue() {
base::WaitableEvent event(true, false);
ASSERT_TRUE(
pref_thread_.message_loop_proxy()->PostTask(
FROM_HERE,
base::Bind(&GetPrefValueHelper::GetPrefValue, this, &event)));
event.Wait();
}
// The thread must be stopped on the main thread. GetPrefValueHelper being
// ref-counted, the destructor can be called from any thread.
void StopThread() {
pref_thread_.Stop();
}
bool value() { return value_; }
private:
friend class base::RefCountedThreadSafe<GetPrefValueHelper>;
~GetPrefValueHelper() {}
void GetPrefValue(base::WaitableEvent* event) {
value_ = pref_.GetValue();
event->Signal();
}
BooleanPrefMember pref_;
bool value_;
base::Thread pref_thread_; // The thread |pref_| runs on.
};
class PrefMemberTestClass {
public:
explicit PrefMemberTestClass(PrefService* prefs)
: observe_cnt_(0), prefs_(prefs) {
str_.Init(kStringPref, prefs,
base::Bind(&PrefMemberTestClass::OnPreferenceChanged,
base::Unretained(this)));
}
void OnPreferenceChanged(const std::string& pref_name) {
EXPECT_EQ(pref_name, kStringPref);
EXPECT_EQ(str_.GetValue(), prefs_->GetString(kStringPref));
++observe_cnt_;
}
StringPrefMember str_;
int observe_cnt_;
private:
PrefService* prefs_;
};
} // anonymous namespace
TEST(PrefMemberTest, BasicGetAndSet) {
TestingPrefServiceSimple prefs;
RegisterTestPrefs(prefs.registry());
// Test bool
BooleanPrefMember boolean;
boolean.Init(kBoolPref, &prefs);
// Check the defaults
EXPECT_FALSE(prefs.GetBoolean(kBoolPref));
EXPECT_FALSE(boolean.GetValue());
EXPECT_FALSE(*boolean);
// Try changing through the member variable.
boolean.SetValue(true);
EXPECT_TRUE(boolean.GetValue());
EXPECT_TRUE(prefs.GetBoolean(kBoolPref));
EXPECT_TRUE(*boolean);
// Try changing back through the pref.
prefs.SetBoolean(kBoolPref, false);
EXPECT_FALSE(prefs.GetBoolean(kBoolPref));
EXPECT_FALSE(boolean.GetValue());
EXPECT_FALSE(*boolean);
// Test int
IntegerPrefMember integer;
integer.Init(kIntPref, &prefs);
// Check the defaults
EXPECT_EQ(0, prefs.GetInteger(kIntPref));
EXPECT_EQ(0, integer.GetValue());
EXPECT_EQ(0, *integer);
// Try changing through the member variable.
integer.SetValue(5);
EXPECT_EQ(5, integer.GetValue());
EXPECT_EQ(5, prefs.GetInteger(kIntPref));
EXPECT_EQ(5, *integer);
// Try changing back through the pref.
prefs.SetInteger(kIntPref, 2);
EXPECT_EQ(2, prefs.GetInteger(kIntPref));
EXPECT_EQ(2, integer.GetValue());
EXPECT_EQ(2, *integer);
// Test double
DoublePrefMember double_member;
double_member.Init(kDoublePref, &prefs);
// Check the defaults
EXPECT_EQ(0.0, prefs.GetDouble(kDoublePref));
EXPECT_EQ(0.0, double_member.GetValue());
EXPECT_EQ(0.0, *double_member);
// Try changing through the member variable.
double_member.SetValue(1.0);
EXPECT_EQ(1.0, double_member.GetValue());
EXPECT_EQ(1.0, prefs.GetDouble(kDoublePref));
EXPECT_EQ(1.0, *double_member);
// Try changing back through the pref.
prefs.SetDouble(kDoublePref, 3.0);
EXPECT_EQ(3.0, prefs.GetDouble(kDoublePref));
EXPECT_EQ(3.0, double_member.GetValue());
EXPECT_EQ(3.0, *double_member);
// Test string
StringPrefMember string;
string.Init(kStringPref, &prefs);
// Check the defaults
EXPECT_EQ("default", prefs.GetString(kStringPref));
EXPECT_EQ("default", string.GetValue());
EXPECT_EQ("default", *string);
// Try changing through the member variable.
string.SetValue("foo");
EXPECT_EQ("foo", string.GetValue());
EXPECT_EQ("foo", prefs.GetString(kStringPref));
EXPECT_EQ("foo", *string);
// Try changing back through the pref.
prefs.SetString(kStringPref, "bar");
EXPECT_EQ("bar", prefs.GetString(kStringPref));
EXPECT_EQ("bar", string.GetValue());
EXPECT_EQ("bar", *string);
// Test string list
base::ListValue expected_list;
std::vector<std::string> expected_vector;
StringListPrefMember string_list;
string_list.Init(kStringListPref, &prefs);
// Check the defaults
EXPECT_TRUE(expected_list.Equals(prefs.GetList(kStringListPref)));
EXPECT_EQ(expected_vector, string_list.GetValue());
EXPECT_EQ(expected_vector, *string_list);
// Try changing through the pref member.
expected_list.AppendString("foo");
expected_vector.push_back("foo");
string_list.SetValue(expected_vector);
EXPECT_TRUE(expected_list.Equals(prefs.GetList(kStringListPref)));
EXPECT_EQ(expected_vector, string_list.GetValue());
EXPECT_EQ(expected_vector, *string_list);
// Try adding through the pref.
expected_list.AppendString("bar");
expected_vector.push_back("bar");
prefs.Set(kStringListPref, expected_list);
EXPECT_TRUE(expected_list.Equals(prefs.GetList(kStringListPref)));
EXPECT_EQ(expected_vector, string_list.GetValue());
EXPECT_EQ(expected_vector, *string_list);
// Try removing through the pref.
expected_list.Remove(0, NULL);
expected_vector.erase(expected_vector.begin());
prefs.Set(kStringListPref, expected_list);
EXPECT_TRUE(expected_list.Equals(prefs.GetList(kStringListPref)));
EXPECT_EQ(expected_vector, string_list.GetValue());
EXPECT_EQ(expected_vector, *string_list);
}
TEST(PrefMemberTest, InvalidList) {
// Set the vector to an initial good value.
std::vector<std::string> expected_vector;
expected_vector.push_back("foo");
// Try to add a valid list first.
base::ListValue list;
list.AppendString("foo");
std::vector<std::string> vector;
EXPECT_TRUE(subtle::PrefMemberVectorStringUpdate(list, &vector));
EXPECT_EQ(expected_vector, vector);
// Now try to add an invalid list. |vector| should not be changed.
list.AppendInteger(0);
EXPECT_FALSE(subtle::PrefMemberVectorStringUpdate(list, &vector));
EXPECT_EQ(expected_vector, vector);
}
TEST(PrefMemberTest, TwoPrefs) {
// Make sure two DoublePrefMembers stay in sync.
TestingPrefServiceSimple prefs;
RegisterTestPrefs(prefs.registry());
DoublePrefMember pref1;
pref1.Init(kDoublePref, &prefs);
DoublePrefMember pref2;
pref2.Init(kDoublePref, &prefs);
pref1.SetValue(2.3);
EXPECT_EQ(2.3, *pref2);
pref2.SetValue(3.5);
EXPECT_EQ(3.5, *pref1);
prefs.SetDouble(kDoublePref, 4.2);
EXPECT_EQ(4.2, *pref1);
EXPECT_EQ(4.2, *pref2);
}
TEST(PrefMemberTest, Observer) {
TestingPrefServiceSimple prefs;
RegisterTestPrefs(prefs.registry());
PrefMemberTestClass test_obj(&prefs);
EXPECT_EQ("default", *test_obj.str_);
// Calling SetValue should not fire the observer.
test_obj.str_.SetValue("hello");
EXPECT_EQ(0, test_obj.observe_cnt_);
EXPECT_EQ("hello", prefs.GetString(kStringPref));
// Changing the pref does fire the observer.
prefs.SetString(kStringPref, "world");
EXPECT_EQ(1, test_obj.observe_cnt_);
EXPECT_EQ("world", *(test_obj.str_));
// Not changing the value should not fire the observer.
prefs.SetString(kStringPref, "world");
EXPECT_EQ(1, test_obj.observe_cnt_);
EXPECT_EQ("world", *(test_obj.str_));
prefs.SetString(kStringPref, "hello");
EXPECT_EQ(2, test_obj.observe_cnt_);
EXPECT_EQ("hello", prefs.GetString(kStringPref));
}
TEST(PrefMemberTest, NoInit) {
// Make sure not calling Init on a PrefMember doesn't cause problems.
IntegerPrefMember pref;
}
TEST(PrefMemberTest, MoveToThread) {
TestingPrefServiceSimple prefs;
scoped_refptr<GetPrefValueHelper> helper(new GetPrefValueHelper());
RegisterTestPrefs(prefs.registry());
helper->Init(kBoolPref, &prefs);
helper->FetchValue();
EXPECT_FALSE(helper->value());
prefs.SetBoolean(kBoolPref, true);
helper->FetchValue();
EXPECT_TRUE(helper->value());
helper->Destroy();
helper->FetchValue();
EXPECT_TRUE(helper->value());
helper->StopThread();
}