Tools/TestWebKitAPI/Tests/WebKit/PreferenceChanges.mm - WebKit - Git at Google

 /*
  * Copyright (C) 2020 Apple Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
  *    documentation and/or other materials provided with the distribution.
  *
  * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
  * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
  * THE POSSIBILITY OF SUCH DAMAGE.
  */

 #import "config.h"

 // FIXME: These tests touch the user's *actual* global and AVFoundation defaults domains.
 // We should find a way to get the same test coverage using volatile domains or swizzling or something.

 #if WK_HAVE_C_SPI

 #import "PlatformUtilities.h"
 #import "TestWKWebView.h"
 #import <WebKit/PreferenceObserver.h>

 #import <wtf/ObjCRuntimeExtras.h>

 static bool receivedPreferenceNotification = false;

 @interface WKTestPreferenceObserver : WKPreferenceObserver
 - (void)preferenceDidChange:(NSString *)domain key:(NSString *)key encodedValue:(NSString *)encodedValue;
 @end

 @implementation WKTestPreferenceObserver
 - (void)preferenceDidChange:(NSString *)domain key:(NSString *)key encodedValue:(NSString *)encodedValue
 {
     receivedPreferenceNotification = true;
     [super preferenceDidChange:domain key:key encodedValue:encodedValue];
 }
 @end

 // FIXME: Remove this pragma once webkit.org/b/221848 is resolved.
 #pragma clang diagnostic push
 #pragma clang diagnostic ignored "-Wunused-const-variable"
 static const CFStringRef globalDomain = kCFPreferencesAnyApplication;
 #pragma clang diagnostic pop
 static const CFStringRef testDomain = CFSTR("com.apple.avfoundation");

 #define TEST_KEY() ((CFStringRef)[NSString stringWithFormat:@"TestWebKitAPI_TestKey_%s", ::testing::UnitTest::GetInstance()->current_test_info()->name()])
 #define CLEAR_DEFAULTS() { \
     CFPreferencesSetValue(TEST_KEY(), nil, kCFPreferencesAnyApplication, kCFPreferencesCurrentUser, kCFPreferencesCurrentHost); \
     CFPreferencesSetAppValue(TEST_KEY(), nil, testDomain); \
 }

 static constexpr unsigned preferenceQueryMaxCount = 10;
 static constexpr float preferenceQuerySleepTime = 1;

 static void waitForPreferenceSynchronization()
 {
     __block bool didSynchronize = false;
     dispatch_async(dispatch_get_main_queue(), ^{
         didSynchronize = true;
     });
     TestWebKitAPI::Util::run(&didSynchronize);
 }

 TEST(WebKit, PreferenceObserver)
 {
     CLEAR_DEFAULTS();

     receivedPreferenceNotification = false;

     CFPreferencesSetAppValue(TEST_KEY(), CFSTR("1"), testDomain);

     auto observer = adoptNS([[WKTestPreferenceObserver alloc] init]);

     CFPreferencesSetAppValue(TEST_KEY(), CFSTR("2"), testDomain);

     TestWebKitAPI::Util::run(&receivedPreferenceNotification);

     CLEAR_DEFAULTS();
 }

 TEST(WebKit, PreferenceObserverArray)
 {
     CLEAR_DEFAULTS();

     receivedPreferenceNotification = false;

     NSArray *array = @[@1, @2, @3];

     auto userDefaults = adoptNS([[NSUserDefaults alloc] initWithSuiteName:(NSString *)testDomain]);
     [userDefaults setObject:array forKey:(NSString *)TEST_KEY()];

     auto observer = adoptNS([[WKTestPreferenceObserver alloc] init]);

     NSArray *changedArray = @[@3, @2, @1];
     [userDefaults setObject:changedArray forKey:(NSString *)TEST_KEY()];

     TestWebKitAPI::Util::run(&receivedPreferenceNotification);

     CLEAR_DEFAULTS();
 }

 TEST(WebKit, PreferenceChanges)
 {
     CLEAR_DEFAULTS();

     CFPreferencesSetAppValue(TEST_KEY(), CFSTR("0"), testDomain);

     auto observer = adoptNS([[WKTestPreferenceObserver alloc] init]);

     auto configuration = adoptNS([[WKWebViewConfiguration alloc] init]);
     WKRetainPtr<WKContextRef> context = adoptWK(TestWebKitAPI::Util::createContextForInjectedBundleTest("InternalsInjectedBundleTest"));
     [configuration setProcessPool:(WKProcessPool *)context.get()];
     auto webView = adoptNS([[TestWKWebView alloc] initWithFrame:NSMakeRect(0, 0, 300, 300) configuration:configuration.get() addToWindow:YES]);
     [webView synchronouslyLoadTestPageNamed:@"simple"];

     receivedPreferenceNotification = false;

     CFPreferencesSetAppValue(TEST_KEY(), CFSTR("1"), testDomain);

     EXPECT_EQ(1, CFPreferencesGetAppIntegerValue(TEST_KEY(), testDomain, nullptr));

     TestWebKitAPI::Util::run(&receivedPreferenceNotification);

     auto preferenceValue = [&] {
         waitForPreferenceSynchronization();
         NSString *js = [NSString stringWithFormat:@"window.internals.readPreferenceInteger(\"%@\",\"%@\")", (NSString *)testDomain, (NSString *)TEST_KEY()];
         return [webView stringByEvaluatingJavaScript:js].intValue;
     };

     EXPECT_EQ(preferenceValue(), 1);

     receivedPreferenceNotification = false;

     CFPreferencesSetAppValue(TEST_KEY(), CFSTR("2"), testDomain);

     TestWebKitAPI::Util::run(&receivedPreferenceNotification);

     EXPECT_EQ(preferenceValue(), 2);

     CLEAR_DEFAULTS();
 }

 TEST(WebKit, GlobalPreferenceChangesUsingDefaultsWrite)
 {
     CLEAR_DEFAULTS();

     system([NSString stringWithFormat:@"defaults write %@ %@ 0", (__bridge id)globalDomain, (__bridge id)TEST_KEY()].UTF8String);

     auto observer = adoptNS([[WKTestPreferenceObserver alloc] init]);

     auto configuration = adoptNS([[WKWebViewConfiguration alloc] init]);
     WKRetainPtr<WKContextRef> context = adoptWK(TestWebKitAPI::Util::createContextForInjectedBundleTest("InternalsInjectedBundleTest"));
     [configuration setProcessPool:(WKProcessPool *)context.get()];
     auto webView = adoptNS([[TestWKWebView alloc] initWithFrame:NSMakeRect(0, 0, 300, 300) configuration:configuration.get() addToWindow:YES]);
     [webView synchronouslyLoadTestPageNamed:@"simple"];

     receivedPreferenceNotification = false;

     system([NSString stringWithFormat:@"defaults write %@ %@ 1", (__bridge id)globalDomain, (__bridge id)TEST_KEY()].UTF8String);

     EXPECT_EQ(1, CFPreferencesGetAppIntegerValue(TEST_KEY(), globalDomain, nullptr));

     TestWebKitAPI::Util::run(&receivedPreferenceNotification);

     auto preferenceValue = [&] {
         waitForPreferenceSynchronization();
         NSString *js = [NSString stringWithFormat:@"window.internals.readPreferenceInteger(\"%@\",\"%@\")", (NSString *)globalDomain, (NSString *)TEST_KEY()];
         return [webView stringByEvaluatingJavaScript:js].intValue;
     };

     preferenceValue();

     receivedPreferenceNotification = false;

     system([NSString stringWithFormat:@"defaults write %@ %@ 2", (__bridge id)globalDomain, (__bridge id)TEST_KEY()].UTF8String);

     TestWebKitAPI::Util::run(&receivedPreferenceNotification);

     for (unsigned i = 0; i < preferenceQueryMaxCount && preferenceValue() != 2; i++) {
         TestWebKitAPI::Util::spinRunLoop();
         TestWebKitAPI::Util::sleep(preferenceQuerySleepTime);
     }

     EXPECT_EQ(preferenceValue(), 2);

     CLEAR_DEFAULTS();
 }

 TEST(WebKit, PreferenceChangesArray)
 {
     CLEAR_DEFAULTS();

     auto observer = adoptNS([[WKTestPreferenceObserver alloc] init]);

     NSArray *array = @[@1, @2, @3];

     auto userDefaults = adoptNS([[NSUserDefaults alloc] initWithSuiteName:(NSString *)testDomain]);
     [userDefaults setObject:array forKey:(NSString *)TEST_KEY()];

     auto configuration = adoptNS([[WKWebViewConfiguration alloc] init]);
     WKRetainPtr<WKContextRef> context = adoptWK(TestWebKitAPI::Util::createContextForInjectedBundleTest("InternalsInjectedBundleTest"));
     [configuration setProcessPool:(WKProcessPool *)context.get()];
     auto webView = adoptNS([[TestWKWebView alloc] initWithFrame:NSMakeRect(0, 0, 300, 300) configuration:configuration.get() addToWindow:YES]);

     auto preferenceValue = [&] {
         waitForPreferenceSynchronization();
         NSString *js = [NSString stringWithFormat:@"window.internals.encodedPreferenceValue(\"%@\",\"%@\")", (NSString *)testDomain, (NSString *)TEST_KEY()];
         return [webView stringByEvaluatingJavaScript:js];
     };

     preferenceValue();

     NSArray *changedArray = @[@3, @2, @1];
     [userDefaults setObject:changedArray forKey:(NSString *)TEST_KEY()];

     RetainPtr<NSObject> object;
     for (unsigned i = 0; i < preferenceQueryMaxCount && ![object isEqual:changedArray]; i++) {
         auto encodedString = preferenceValue();
         auto encodedData = adoptNS([[NSData alloc] initWithBase64EncodedString:encodedString options:0]);
         ASSERT_TRUE(encodedData);
         NSError *err = nil;
         object = retainPtr([NSKeyedUnarchiver unarchivedObjectOfClass:[NSObject class] fromData:encodedData.get() error:&err]);
         TestWebKitAPI::Util::spinRunLoop();
         TestWebKitAPI::Util::sleep(preferenceQuerySleepTime);
     }

     ASSERT_TRUE([object isEqual:changedArray]);

     CLEAR_DEFAULTS();
 }

 TEST(WebKit, PreferenceChangesDictionary)
 {
     CLEAR_DEFAULTS();

     auto observer = adoptNS([[WKTestPreferenceObserver alloc] init]);

     NSDictionary *dict = @{
         @"a" : @1,
         @"b" : @2,
     };

     auto userDefaults = adoptNS([[NSUserDefaults alloc] initWithSuiteName:(NSString *)testDomain]);
     [userDefaults setObject:dict forKey:(NSString *)TEST_KEY()];

     auto configuration = adoptNS([[WKWebViewConfiguration alloc] init]);
     WKRetainPtr<WKContextRef> context = adoptWK(TestWebKitAPI::Util::createContextForInjectedBundleTest("InternalsInjectedBundleTest"));
     [configuration setProcessPool:(WKProcessPool *)context.get()];
     auto webView = adoptNS([[TestWKWebView alloc] initWithFrame:NSMakeRect(0, 0, 300, 300) configuration:configuration.get() addToWindow:YES]);

     auto preferenceValue = [&] {
         waitForPreferenceSynchronization();
         NSString *js = [NSString stringWithFormat:@"window.internals.encodedPreferenceValue(\"%@\",\"%@\")", (NSString *)testDomain, (NSString *)TEST_KEY()];
         return [webView stringByEvaluatingJavaScript:js];
     };

     preferenceValue();

     NSDictionary *changedDict = @{
         @"a" : @1,
         @"b" : @2,
         @"c" : @3,
     };
     [userDefaults setObject:changedDict forKey:(NSString *)TEST_KEY()];

     RetainPtr<NSObject> object;
     for (unsigned i = 0; i < preferenceQueryMaxCount && ![object isEqual:changedDict]; i++) {
         auto encodedString = preferenceValue();
         auto encodedData = adoptNS([[NSData alloc] initWithBase64EncodedString:encodedString options:0]);
         ASSERT_TRUE(encodedData);
         NSError *err = nil;
         object = retainPtr([NSKeyedUnarchiver unarchivedObjectOfClass:[NSObject class] fromData:encodedData.get() error:&err]);
         TestWebKitAPI::Util::spinRunLoop();
         TestWebKitAPI::Util::sleep(preferenceQuerySleepTime);
     }

     ASSERT_TRUE([object isEqual:changedDict]);

     CLEAR_DEFAULTS();
 }

 TEST(WebKit, PreferenceChangesData)
 {
     CLEAR_DEFAULTS();

     auto observer = adoptNS([[WKTestPreferenceObserver alloc] init]);

     NSData *data = [NSData dataWithBytes:"abc" length:3];

     auto userDefaults = adoptNS([[NSUserDefaults alloc] initWithSuiteName:(NSString *)testDomain]);
     [userDefaults setObject:data forKey:(NSString *)TEST_KEY()];

     auto configuration = adoptNS([[WKWebViewConfiguration alloc] init]);
     WKRetainPtr<WKContextRef> context = adoptWK(TestWebKitAPI::Util::createContextForInjectedBundleTest("InternalsInjectedBundleTest"));
     [configuration setProcessPool:(WKProcessPool *)context.get()];
     auto webView = adoptNS([[TestWKWebView alloc] initWithFrame:NSMakeRect(0, 0, 300, 300) configuration:configuration.get() addToWindow:YES]);

     auto preferenceValue = [&] {
         waitForPreferenceSynchronization();
         NSString *js = [NSString stringWithFormat:@"window.internals.encodedPreferenceValue(\"%@\",\"%@\")", (NSString *)testDomain, (NSString *)TEST_KEY()];
         return [webView stringByEvaluatingJavaScript:js];
     };

     preferenceValue();

     NSData *changedData = [NSData dataWithBytes:"abcd" length:4];
     [userDefaults setObject:changedData forKey:(NSString *)TEST_KEY()];

     RetainPtr<NSObject> object;
     for (unsigned i = 0; i < preferenceQueryMaxCount && ![object isEqual:changedData]; i++) {
         auto encodedString = preferenceValue();
         auto encodedData = adoptNS([[NSData alloc] initWithBase64EncodedString:encodedString options:0]);
         ASSERT_TRUE(encodedData);
         NSError *err = nil;
         object = retainPtr([NSKeyedUnarchiver unarchivedObjectOfClass:[NSObject class] fromData:encodedData.get() error:&err]);
         TestWebKitAPI::Util::spinRunLoop();
         TestWebKitAPI::Util::sleep(preferenceQuerySleepTime);
     }

     ASSERT_TRUE([object isEqual:changedData]);

     CLEAR_DEFAULTS();
 }

 TEST(WebKit, PreferenceChangesDate)
 {
     CLEAR_DEFAULTS();

     auto observer = adoptNS([[WKTestPreferenceObserver alloc] init]);

     NSDate *date = [NSDate dateWithTimeIntervalSinceNow:0];

     auto userDefaults = adoptNS([[NSUserDefaults alloc] initWithSuiteName:(NSString *)testDomain]);
     [userDefaults setObject:date forKey:(NSString *)TEST_KEY()];

     auto configuration = adoptNS([[WKWebViewConfiguration alloc] init]);
     WKRetainPtr<WKContextRef> context = adoptWK(TestWebKitAPI::Util::createContextForInjectedBundleTest("InternalsInjectedBundleTest"));
     [configuration setProcessPool:(WKProcessPool *)context.get()];
     auto webView = adoptNS([[TestWKWebView alloc] initWithFrame:NSMakeRect(0, 0, 300, 300) configuration:configuration.get() addToWindow:YES]);

     auto preferenceValue = [&] {
         waitForPreferenceSynchronization();
         NSString *js = [NSString stringWithFormat:@"window.internals.encodedPreferenceValue(\"%@\",\"%@\")", (NSString *)testDomain, (NSString *)TEST_KEY()];
         return [webView stringByEvaluatingJavaScript:js];
     };

     preferenceValue();

     NSDate *changedDate = [NSDate dateWithTimeIntervalSinceNow:10];
     [userDefaults setObject:changedDate forKey:(NSString *)TEST_KEY()];

     RetainPtr<NSObject> object;
     for (unsigned i = 0; i < preferenceQueryMaxCount && ![object isEqual:changedDate]; i++) {
         auto encodedString = preferenceValue();
         auto encodedData = adoptNS([[NSData alloc] initWithBase64EncodedString:encodedString options:0]);
         ASSERT_TRUE(encodedData);
         NSError *err = nil;
         object = retainPtr([NSKeyedUnarchiver unarchivedObjectOfClass:[NSObject class] fromData:encodedData.get() error:&err]);
         TestWebKitAPI::Util::spinRunLoop();
         TestWebKitAPI::Util::sleep(preferenceQuerySleepTime);
     }

     ASSERT_TRUE([object isEqual:changedDate]);

     CLEAR_DEFAULTS();
 }

 TEST(WebKit, PreferenceChangesNil)
 {
     CLEAR_DEFAULTS();

     auto observer = adoptNS([[WKTestPreferenceObserver alloc] init]);

     auto userDefaults = adoptNS([[NSUserDefaults alloc] initWithSuiteName:(NSString *)testDomain]);
     [userDefaults setObject:@1 forKey:(NSString *)TEST_KEY()];

     auto configuration = adoptNS([[WKWebViewConfiguration alloc] init]);
     WKRetainPtr<WKContextRef> context = adoptWK(TestWebKitAPI::Util::createContextForInjectedBundleTest("InternalsInjectedBundleTest"));
     [configuration setProcessPool:(WKProcessPool *)context.get()];
     auto webView = adoptNS([[TestWKWebView alloc] initWithFrame:NSMakeRect(0, 0, 300, 300) configuration:configuration.get() addToWindow:YES]);
     [webView synchronouslyLoadTestPageNamed:@"simple"];

     auto preferenceValue = [&] {
         waitForPreferenceSynchronization();
         NSString *js = [NSString stringWithFormat:@"window.internals.readPreferenceInteger(\"%@\",\"%@\")", (NSString *)testDomain, (NSString *)TEST_KEY()];
         return [webView stringByEvaluatingJavaScript:js].intValue;
     };

     EXPECT_EQ(1, preferenceValue());

     [userDefaults setObject:nil forKey:(NSString *)TEST_KEY()];

     for (unsigned i = 0; i < preferenceQueryMaxCount && preferenceValue(); i++) {
         TestWebKitAPI::Util::spinRunLoop();
         TestWebKitAPI::Util::sleep(preferenceQuerySleepTime);
     }

     EXPECT_EQ(0, preferenceValue());

     CLEAR_DEFAULTS();
 }

 #if ENABLE(CFPREFS_DIRECT_MODE)
 static IMP sharedInstanceMethodOriginal = nil;
 static bool sharedInstanceCalled = false;

 static WKPreferenceObserver *sharedInstanceMethodOverride(id self, SEL selector)
 {
     WKPreferenceObserver *observer = wtfCallIMP<WKPreferenceObserver *>(sharedInstanceMethodOriginal, self, selector);
     sharedInstanceCalled = true;
     return observer;
 }

 TEST(WebKit, PreferenceObserverStartedOnActivation)
 {
     sharedInstanceCalled = false;
     Method sharedInstanceMethod = class_getClassMethod(objc_getClass("WKPreferenceObserver"), @selector(sharedInstance));
     ASSERT(sharedInstanceMethod);
     sharedInstanceMethodOriginal = method_setImplementation(sharedInstanceMethod, (IMP)sharedInstanceMethodOverride);
     ASSERT(sharedInstanceMethodOriginal);

     auto configuration = adoptNS([[WKWebViewConfiguration alloc] init]);
     WKRetainPtr<WKContextRef> context = adoptWK(TestWebKitAPI::Util::createContextForInjectedBundleTest("InternalsInjectedBundleTest"));
     [configuration setProcessPool:(WKProcessPool *)context.get()];
     auto webView = adoptNS([[TestWKWebView alloc] initWithFrame:NSMakeRect(0, 0, 300, 300) configuration:configuration.get() addToWindow:YES]);

     [webView synchronouslyLoadTestPageNamed:@"simple"];

     [[NSNotificationCenter defaultCenter] postNotificationName:NSApplicationDidBecomeActiveNotification object:NSApp userInfo:nil];

     TestWebKitAPI::Util::run(&sharedInstanceCalled);
 }
 #endif

 #endif // WK_HAVE_C_SPI
	/*
	* Copyright (C) 2020 Apple Inc. All rights reserved.
	*
	* Redistribution and use in source and binary forms, with or without
	* modification, are permitted provided that the following conditions
	* are met:
	* 1. Redistributions of source code must retain the above copyright
	* notice, this list of conditions and the following disclaimer.
	* 2. Redistributions in binary form must reproduce the above copyright
	* notice, this list of conditions and the following disclaimer in the
	* documentation and/or other materials provided with the distribution.
	*
	* THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
	* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
	* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
	* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
	* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
	* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
	* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
	* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
	* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
	* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
	* THE POSSIBILITY OF SUCH DAMAGE.
	*/

	#import "config.h"

	// FIXME: These tests touch the user's actual global and AVFoundation defaults domains.
	// We should find a way to get the same test coverage using volatile domains or swizzling or something.

	#if WK_HAVE_C_SPI

	#import "PlatformUtilities.h"
	#import "TestWKWebView.h"
	#import <WebKit/PreferenceObserver.h>

	#import <wtf/ObjCRuntimeExtras.h>

	static bool receivedPreferenceNotification = false;

	@interface WKTestPreferenceObserver : WKPreferenceObserver
	- (void)preferenceDidChange:(NSString )domain key:(NSString )key encodedValue:(NSString *)encodedValue;
	@end

	@implementation WKTestPreferenceObserver
	- (void)preferenceDidChange:(NSString )domain key:(NSString )key encodedValue:(NSString *)encodedValue
	{
	receivedPreferenceNotification = true;
	[super preferenceDidChange:domain key:key encodedValue:encodedValue];
	}
	@end

	// FIXME: Remove this pragma once webkit.org/b/221848 is resolved.
	#pragma clang diagnostic push
	#pragma clang diagnostic ignored "-Wunused-const-variable"
	static const CFStringRef globalDomain = kCFPreferencesAnyApplication;
	#pragma clang diagnostic pop
	static const CFStringRef testDomain = CFSTR("com.apple.avfoundation");

	#define TEST_KEY() ((CFStringRef)[NSString stringWithFormat:@"TestWebKitAPI_TestKey_%s", ::testing::UnitTest::GetInstance()->current_test_info()->name()])
	#define CLEAR_DEFAULTS() { \
	CFPreferencesSetValue(TEST_KEY(), nil, kCFPreferencesAnyApplication, kCFPreferencesCurrentUser, kCFPreferencesCurrentHost); \
	CFPreferencesSetAppValue(TEST_KEY(), nil, testDomain); \
	}

	static constexpr unsigned preferenceQueryMaxCount = 10;
	static constexpr float preferenceQuerySleepTime = 1;

	static void waitForPreferenceSynchronization()
	{
	__block bool didSynchronize = false;
	dispatch_async(dispatch_get_main_queue(), ^{
	didSynchronize = true;
	});
	TestWebKitAPI::Util::run(&didSynchronize);
	}

	TEST(WebKit, PreferenceObserver)
	{
	CLEAR_DEFAULTS();

	receivedPreferenceNotification = false;

	CFPreferencesSetAppValue(TEST_KEY(), CFSTR("1"), testDomain);

	auto observer = adoptNS([[WKTestPreferenceObserver alloc] init]);

	CFPreferencesSetAppValue(TEST_KEY(), CFSTR("2"), testDomain);

	TestWebKitAPI::Util::run(&receivedPreferenceNotification);

	CLEAR_DEFAULTS();
	}

	TEST(WebKit, PreferenceObserverArray)
	{
	CLEAR_DEFAULTS();

	receivedPreferenceNotification = false;

	NSArray *array = @[@1, @2, @3];

	auto userDefaults = adoptNS([[NSUserDefaults alloc] initWithSuiteName:(NSString *)testDomain]);
	[userDefaults setObject:array forKey:(NSString *)TEST_KEY()];

	auto observer = adoptNS([[WKTestPreferenceObserver alloc] init]);

	NSArray *changedArray = @[@3, @2, @1];
	[userDefaults setObject:changedArray forKey:(NSString *)TEST_KEY()];

	TestWebKitAPI::Util::run(&receivedPreferenceNotification);

	CLEAR_DEFAULTS();
	}

	TEST(WebKit, PreferenceChanges)
	{
	CLEAR_DEFAULTS();

	CFPreferencesSetAppValue(TEST_KEY(), CFSTR("0"), testDomain);

	auto observer = adoptNS([[WKTestPreferenceObserver alloc] init]);

	auto configuration = adoptNS([[WKWebViewConfiguration alloc] init]);
	WKRetainPtr<WKContextRef> context = adoptWK(TestWebKitAPI::Util::createContextForInjectedBundleTest("InternalsInjectedBundleTest"));
	[configuration setProcessPool:(WKProcessPool *)context.get()];
	auto webView = adoptNS([[TestWKWebView alloc] initWithFrame:NSMakeRect(0, 0, 300, 300) configuration:configuration.get() addToWindow:YES]);
	[webView synchronouslyLoadTestPageNamed:@"simple"];

	receivedPreferenceNotification = false;

	CFPreferencesSetAppValue(TEST_KEY(), CFSTR("1"), testDomain);

	EXPECT_EQ(1, CFPreferencesGetAppIntegerValue(TEST_KEY(), testDomain, nullptr));

	TestWebKitAPI::Util::run(&receivedPreferenceNotification);

	auto preferenceValue = [&] {
	waitForPreferenceSynchronization();
	NSString js = [NSString stringWithFormat:@"window.internals.readPreferenceInteger(\"%@\",\"%@\")", (NSString )testDomain, (NSString *)TEST_KEY()];
	return [webView stringByEvaluatingJavaScript:js].intValue;
	};

	EXPECT_EQ(preferenceValue(), 1);

	receivedPreferenceNotification = false;

	CFPreferencesSetAppValue(TEST_KEY(), CFSTR("2"), testDomain);

	TestWebKitAPI::Util::run(&receivedPreferenceNotification);

	EXPECT_EQ(preferenceValue(), 2);

	CLEAR_DEFAULTS();
	}

	TEST(WebKit, GlobalPreferenceChangesUsingDefaultsWrite)
	{
	CLEAR_DEFAULTS();

	system([NSString stringWithFormat:@"defaults write %@ %@ 0", (__bridge id)globalDomain, (__bridge id)TEST_KEY()].UTF8String);

	auto observer = adoptNS([[WKTestPreferenceObserver alloc] init]);

	auto configuration = adoptNS([[WKWebViewConfiguration alloc] init]);
	WKRetainPtr<WKContextRef> context = adoptWK(TestWebKitAPI::Util::createContextForInjectedBundleTest("InternalsInjectedBundleTest"));
	[configuration setProcessPool:(WKProcessPool *)context.get()];
	auto webView = adoptNS([[TestWKWebView alloc] initWithFrame:NSMakeRect(0, 0, 300, 300) configuration:configuration.get() addToWindow:YES]);
	[webView synchronouslyLoadTestPageNamed:@"simple"];

	receivedPreferenceNotification = false;

	system([NSString stringWithFormat:@"defaults write %@ %@ 1", (__bridge id)globalDomain, (__bridge id)TEST_KEY()].UTF8String);

	EXPECT_EQ(1, CFPreferencesGetAppIntegerValue(TEST_KEY(), globalDomain, nullptr));

	TestWebKitAPI::Util::run(&receivedPreferenceNotification);

	auto preferenceValue = [&] {
	waitForPreferenceSynchronization();
	NSString js = [NSString stringWithFormat:@"window.internals.readPreferenceInteger(\"%@\",\"%@\")", (NSString )globalDomain, (NSString *)TEST_KEY()];
	return [webView stringByEvaluatingJavaScript:js].intValue;
	};

	preferenceValue();

	receivedPreferenceNotification = false;

	system([NSString stringWithFormat:@"defaults write %@ %@ 2", (__bridge id)globalDomain, (__bridge id)TEST_KEY()].UTF8String);

	TestWebKitAPI::Util::run(&receivedPreferenceNotification);

	for (unsigned i = 0; i < preferenceQueryMaxCount && preferenceValue() != 2; i++) {
	TestWebKitAPI::Util::spinRunLoop();
	TestWebKitAPI::Util::sleep(preferenceQuerySleepTime);
	}

	EXPECT_EQ(preferenceValue(), 2);

	CLEAR_DEFAULTS();
	}

	TEST(WebKit, PreferenceChangesArray)
	{
	CLEAR_DEFAULTS();

	auto observer = adoptNS([[WKTestPreferenceObserver alloc] init]);

	NSArray *array = @[@1, @2, @3];

	auto userDefaults = adoptNS([[NSUserDefaults alloc] initWithSuiteName:(NSString *)testDomain]);
	[userDefaults setObject:array forKey:(NSString *)TEST_KEY()];

	auto configuration = adoptNS([[WKWebViewConfiguration alloc] init]);
	WKRetainPtr<WKContextRef> context = adoptWK(TestWebKitAPI::Util::createContextForInjectedBundleTest("InternalsInjectedBundleTest"));
	[configuration setProcessPool:(WKProcessPool *)context.get()];
	auto webView = adoptNS([[TestWKWebView alloc] initWithFrame:NSMakeRect(0, 0, 300, 300) configuration:configuration.get() addToWindow:YES]);

	auto preferenceValue = [&] {
	waitForPreferenceSynchronization();
	NSString js = [NSString stringWithFormat:@"window.internals.encodedPreferenceValue(\"%@\",\"%@\")", (NSString )testDomain, (NSString *)TEST_KEY()];
	return [webView stringByEvaluatingJavaScript:js];
	};

	preferenceValue();

	NSArray *changedArray = @[@3, @2, @1];
	[userDefaults setObject:changedArray forKey:(NSString *)TEST_KEY()];

	RetainPtr<NSObject> object;
	for (unsigned i = 0; i < preferenceQueryMaxCount && ![object isEqual:changedArray]; i++) {
	auto encodedString = preferenceValue();
	auto encodedData = adoptNS([[NSData alloc] initWithBase64EncodedString:encodedString options:0]);
	ASSERT_TRUE(encodedData);
	NSError *err = nil;
	object = retainPtr([NSKeyedUnarchiver unarchivedObjectOfClass:[NSObject class] fromData:encodedData.get() error:&err]);
	TestWebKitAPI::Util::spinRunLoop();
	TestWebKitAPI::Util::sleep(preferenceQuerySleepTime);
	}

	ASSERT_TRUE([object isEqual:changedArray]);

	CLEAR_DEFAULTS();
	}

	TEST(WebKit, PreferenceChangesDictionary)
	{
	CLEAR_DEFAULTS();

	auto observer = adoptNS([[WKTestPreferenceObserver alloc] init]);

	NSDictionary *dict = @{
	@"a" : @1,
	@"b" : @2,
	};

	auto userDefaults = adoptNS([[NSUserDefaults alloc] initWithSuiteName:(NSString *)testDomain]);
	[userDefaults setObject:dict forKey:(NSString *)TEST_KEY()];

	auto configuration = adoptNS([[WKWebViewConfiguration alloc] init]);
	WKRetainPtr<WKContextRef> context = adoptWK(TestWebKitAPI::Util::createContextForInjectedBundleTest("InternalsInjectedBundleTest"));
	[configuration setProcessPool:(WKProcessPool *)context.get()];
	auto webView = adoptNS([[TestWKWebView alloc] initWithFrame:NSMakeRect(0, 0, 300, 300) configuration:configuration.get() addToWindow:YES]);

	auto preferenceValue = [&] {
	waitForPreferenceSynchronization();
	NSString js = [NSString stringWithFormat:@"window.internals.encodedPreferenceValue(\"%@\",\"%@\")", (NSString )testDomain, (NSString *)TEST_KEY()];
	return [webView stringByEvaluatingJavaScript:js];
	};

	preferenceValue();

	NSDictionary *changedDict = @{
	@"a" : @1,
	@"b" : @2,
	@"c" : @3,
	};
	[userDefaults setObject:changedDict forKey:(NSString *)TEST_KEY()];

	RetainPtr<NSObject> object;
	for (unsigned i = 0; i < preferenceQueryMaxCount && ![object isEqual:changedDict]; i++) {
	auto encodedString = preferenceValue();
	auto encodedData = adoptNS([[NSData alloc] initWithBase64EncodedString:encodedString options:0]);
	ASSERT_TRUE(encodedData);
	NSError *err = nil;
	object = retainPtr([NSKeyedUnarchiver unarchivedObjectOfClass:[NSObject class] fromData:encodedData.get() error:&err]);
	TestWebKitAPI::Util::spinRunLoop();
	TestWebKitAPI::Util::sleep(preferenceQuerySleepTime);
	}

	ASSERT_TRUE([object isEqual:changedDict]);

	CLEAR_DEFAULTS();
	}

	TEST(WebKit, PreferenceChangesData)
	{
	CLEAR_DEFAULTS();

	auto observer = adoptNS([[WKTestPreferenceObserver alloc] init]);

	NSData *data = [NSData dataWithBytes:"abc" length:3];

	auto userDefaults = adoptNS([[NSUserDefaults alloc] initWithSuiteName:(NSString *)testDomain]);
	[userDefaults setObject:data forKey:(NSString *)TEST_KEY()];

	auto configuration = adoptNS([[WKWebViewConfiguration alloc] init]);
	WKRetainPtr<WKContextRef> context = adoptWK(TestWebKitAPI::Util::createContextForInjectedBundleTest("InternalsInjectedBundleTest"));
	[configuration setProcessPool:(WKProcessPool *)context.get()];
	auto webView = adoptNS([[TestWKWebView alloc] initWithFrame:NSMakeRect(0, 0, 300, 300) configuration:configuration.get() addToWindow:YES]);

	auto preferenceValue = [&] {
	waitForPreferenceSynchronization();
	NSString js = [NSString stringWithFormat:@"window.internals.encodedPreferenceValue(\"%@\",\"%@\")", (NSString )testDomain, (NSString *)TEST_KEY()];
	return [webView stringByEvaluatingJavaScript:js];
	};

	preferenceValue();

	NSData *changedData = [NSData dataWithBytes:"abcd" length:4];
	[userDefaults setObject:changedData forKey:(NSString *)TEST_KEY()];

	RetainPtr<NSObject> object;
	for (unsigned i = 0; i < preferenceQueryMaxCount && ![object isEqual:changedData]; i++) {
	auto encodedString = preferenceValue();
	auto encodedData = adoptNS([[NSData alloc] initWithBase64EncodedString:encodedString options:0]);
	ASSERT_TRUE(encodedData);
	NSError *err = nil;
	object = retainPtr([NSKeyedUnarchiver unarchivedObjectOfClass:[NSObject class] fromData:encodedData.get() error:&err]);
	TestWebKitAPI::Util::spinRunLoop();
	TestWebKitAPI::Util::sleep(preferenceQuerySleepTime);
	}

	ASSERT_TRUE([object isEqual:changedData]);

	CLEAR_DEFAULTS();
	}

	TEST(WebKit, PreferenceChangesDate)
	{
	CLEAR_DEFAULTS();

	auto observer = adoptNS([[WKTestPreferenceObserver alloc] init]);

	NSDate *date = [NSDate dateWithTimeIntervalSinceNow:0];

	auto userDefaults = adoptNS([[NSUserDefaults alloc] initWithSuiteName:(NSString *)testDomain]);
	[userDefaults setObject:date forKey:(NSString *)TEST_KEY()];

	auto configuration = adoptNS([[WKWebViewConfiguration alloc] init]);
	WKRetainPtr<WKContextRef> context = adoptWK(TestWebKitAPI::Util::createContextForInjectedBundleTest("InternalsInjectedBundleTest"));
	[configuration setProcessPool:(WKProcessPool *)context.get()];
	auto webView = adoptNS([[TestWKWebView alloc] initWithFrame:NSMakeRect(0, 0, 300, 300) configuration:configuration.get() addToWindow:YES]);

	auto preferenceValue = [&] {
	waitForPreferenceSynchronization();
	NSString js = [NSString stringWithFormat:@"window.internals.encodedPreferenceValue(\"%@\",\"%@\")", (NSString )testDomain, (NSString *)TEST_KEY()];
	return [webView stringByEvaluatingJavaScript:js];
	};

	preferenceValue();

	NSDate *changedDate = [NSDate dateWithTimeIntervalSinceNow:10];
	[userDefaults setObject:changedDate forKey:(NSString *)TEST_KEY()];

	RetainPtr<NSObject> object;
	for (unsigned i = 0; i < preferenceQueryMaxCount && ![object isEqual:changedDate]; i++) {
	auto encodedString = preferenceValue();
	auto encodedData = adoptNS([[NSData alloc] initWithBase64EncodedString:encodedString options:0]);
	ASSERT_TRUE(encodedData);
	NSError *err = nil;
	object = retainPtr([NSKeyedUnarchiver unarchivedObjectOfClass:[NSObject class] fromData:encodedData.get() error:&err]);
	TestWebKitAPI::Util::spinRunLoop();
	TestWebKitAPI::Util::sleep(preferenceQuerySleepTime);
	}

	ASSERT_TRUE([object isEqual:changedDate]);

	CLEAR_DEFAULTS();
	}

	TEST(WebKit, PreferenceChangesNil)
	{
	CLEAR_DEFAULTS();

	auto observer = adoptNS([[WKTestPreferenceObserver alloc] init]);

	auto userDefaults = adoptNS([[NSUserDefaults alloc] initWithSuiteName:(NSString *)testDomain]);
	[userDefaults setObject:@1 forKey:(NSString *)TEST_KEY()];

	auto configuration = adoptNS([[WKWebViewConfiguration alloc] init]);
	WKRetainPtr<WKContextRef> context = adoptWK(TestWebKitAPI::Util::createContextForInjectedBundleTest("InternalsInjectedBundleTest"));
	[configuration setProcessPool:(WKProcessPool *)context.get()];
	auto webView = adoptNS([[TestWKWebView alloc] initWithFrame:NSMakeRect(0, 0, 300, 300) configuration:configuration.get() addToWindow:YES]);
	[webView synchronouslyLoadTestPageNamed:@"simple"];

	auto preferenceValue = [&] {
	waitForPreferenceSynchronization();
	NSString js = [NSString stringWithFormat:@"window.internals.readPreferenceInteger(\"%@\",\"%@\")", (NSString )testDomain, (NSString *)TEST_KEY()];
	return [webView stringByEvaluatingJavaScript:js].intValue;
	};

	EXPECT_EQ(1, preferenceValue());

	[userDefaults setObject:nil forKey:(NSString *)TEST_KEY()];

	for (unsigned i = 0; i < preferenceQueryMaxCount && preferenceValue(); i++) {
	TestWebKitAPI::Util::spinRunLoop();
	TestWebKitAPI::Util::sleep(preferenceQuerySleepTime);
	}

	EXPECT_EQ(0, preferenceValue());

	CLEAR_DEFAULTS();
	}

	#if ENABLE(CFPREFS_DIRECT_MODE)
	static IMP sharedInstanceMethodOriginal = nil;
	static bool sharedInstanceCalled = false;

	static WKPreferenceObserver *sharedInstanceMethodOverride(id self, SEL selector)
	{
	WKPreferenceObserver observer = wtfCallIMP<WKPreferenceObserver >(sharedInstanceMethodOriginal, self, selector);
	sharedInstanceCalled = true;
	return observer;
	}

	TEST(WebKit, PreferenceObserverStartedOnActivation)
	{
	sharedInstanceCalled = false;
	Method sharedInstanceMethod = class_getClassMethod(objc_getClass("WKPreferenceObserver"), @selector(sharedInstance));
	ASSERT(sharedInstanceMethod);
	sharedInstanceMethodOriginal = method_setImplementation(sharedInstanceMethod, (IMP)sharedInstanceMethodOverride);
	ASSERT(sharedInstanceMethodOriginal);

	auto configuration = adoptNS([[WKWebViewConfiguration alloc] init]);
	WKRetainPtr<WKContextRef> context = adoptWK(TestWebKitAPI::Util::createContextForInjectedBundleTest("InternalsInjectedBundleTest"));
	[configuration setProcessPool:(WKProcessPool *)context.get()];
	auto webView = adoptNS([[TestWKWebView alloc] initWithFrame:NSMakeRect(0, 0, 300, 300) configuration:configuration.get() addToWindow:YES]);

	[webView synchronouslyLoadTestPageNamed:@"simple"];

	[[NSNotificationCenter defaultCenter] postNotificationName:NSApplicationDidBecomeActiveNotification object:NSApp userInfo:nil];

	TestWebKitAPI::Util::run(&sharedInstanceCalled);
	}
	#endif

	#endif // WK_HAVE_C_SPI