Tools/TestWebKitAPI/Tests/WebKitCocoa/WKWebViewConfiguration.mm - WebKit - Git at Google

 /*
  * Copyright (C) 2017 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"

 #import "HTTPServer.h"
 #import "PlatformUtilities.h"
 #import "TestNavigationDelegate.h"
 #import "TestWKWebView.h"
 #import <WebKit/WKWebView.h>
 #import <WebKit/WKWebViewConfigurationPrivate.h>
 #import <WebKit/WKWebsiteDataStorePrivate.h>
 #import <WebKit/_WKWebsiteDataStoreConfiguration.h>
 #import <wtf/Function.h>
 #import <wtf/RetainPtr.h>

 TEST(WebKit, InvalidConfiguration)
 {
     auto shouldThrowExceptionWhenUsed = [](Function<void(WKWebViewConfiguration *)>&& modifier) {
         @try {
             auto configuration = adoptNS([[WKWebViewConfiguration alloc] init]);
             modifier(configuration.get());
             auto webView = adoptNS([[WKWebView alloc] initWithFrame:NSMakeRect(0, 0, 800, 600) configuration:configuration.get()]);
             EXPECT_TRUE(false);
         } @catch (NSException *exception) {
             EXPECT_WK_STREQ(NSInvalidArgumentException, exception.name);
         }
     };

 #pragma clang diagnostic push
 #pragma clang diagnostic ignored "-Wnonnull"
     shouldThrowExceptionWhenUsed([](WKWebViewConfiguration *configuration) {
         [configuration setProcessPool:nil];
     });
     shouldThrowExceptionWhenUsed([](WKWebViewConfiguration *configuration) {
         [configuration setPreferences:nil];
     });
     shouldThrowExceptionWhenUsed([](WKWebViewConfiguration *configuration) {
         [configuration setUserContentController:nil];
     });
     shouldThrowExceptionWhenUsed([](WKWebViewConfiguration *configuration) {
         [configuration setWebsiteDataStore:nil];
     });
     shouldThrowExceptionWhenUsed([](WKWebViewConfiguration *configuration) {
         [configuration _setVisitedLinkStore:nil];
     });
 #pragma clang diagnostic pop

     // Related WebViews cannot use different data stores.
     auto configurationForEphemeralView = adoptNS([[WKWebViewConfiguration alloc] init]);
     configurationForEphemeralView.get().websiteDataStore = [WKWebsiteDataStore nonPersistentDataStore];
     auto ephemeralWebView = adoptNS([[WKWebView alloc] initWithFrame:NSMakeRect(0, 0, 800, 600) configuration:configurationForEphemeralView.get()]);
     shouldThrowExceptionWhenUsed([&](WKWebViewConfiguration *configuration) {
         [configuration _setRelatedWebView:ephemeralWebView.get()];
     });
 }

 TEST(WebKit, ConfigurationGroupIdentifierIsCopied)
 {
     auto configuration = adoptNS([[WKWebViewConfiguration alloc] init]);
     [configuration _setGroupIdentifier:@"TestGroupIdentifier"];

     auto configuationCopy = adoptNS([configuration copy]);
     EXPECT_STREQ([configuration _groupIdentifier].UTF8String, [configuationCopy _groupIdentifier].UTF8String);
 }

 TEST(WebKit, DefaultConfigurationEME)
 {
     auto configuration = adoptNS([WKWebViewConfiguration new]);
     EXPECT_TRUE([configuration _legacyEncryptedMediaAPIEnabled]);
     auto webView = adoptNS([[WKWebView alloc] initWithFrame:CGRectMake(0, 0, 100, 100) configuration:configuration.get()]);
     [webView loadHTMLString:@"<html>hi</html>" baseURL:nil];
     __block bool done = false;
     [webView evaluateJavaScript:@"window.WebKitMediaKeys ? 'ENABLED' : 'DISABLED'" completionHandler:^(id result, NSError *){
         EXPECT_TRUE([result isEqualToString:@"ENABLED"]);
         done = true;
     }];
     TestWebKitAPI::Util::run(&done);
 }

 TEST(WebKit, ConfigurationHTTPSUpgrade)
 {
     using namespace TestWebKitAPI;
     bool done = false;
     Vector<char> requestBytes;
     HTTPServer server([&] (Connection connection) {
         connection.receiveHTTPRequest([&, connection](Vector<char>&& bytes) mutable {
             requestBytes = WTFMove(bytes);
             done = true;
         });
     });

     auto runTest = [&] (bool upgrade) {
         done = false;
         auto storeConfiguration = adoptNS([[_WKWebsiteDataStoreConfiguration alloc] initNonPersistentConfiguration]);
         [storeConfiguration setAllowsServerPreconnect:NO];
         [storeConfiguration setProxyConfiguration:@{
             (NSString *)kCFStreamPropertyHTTPSProxyHost: @"127.0.0.1",
             (NSString *)kCFStreamPropertyHTTPSProxyPort: @(server.port()),
             (NSString *)kCFStreamPropertyHTTPProxyHost: @"127.0.0.1",
             (NSString *)kCFStreamPropertyHTTPProxyPort: @(server.port()),
         }];
         auto store = adoptNS([[WKWebsiteDataStore alloc] _initWithConfiguration:storeConfiguration.get()]);
         auto configuration = adoptNS([WKWebViewConfiguration new]);
         [configuration setWebsiteDataStore:store.get()];
         [configuration setUpgradeKnownHostsToHTTPS:upgrade];
         auto webView = adoptNS([[WKWebView alloc] initWithFrame:CGRectZero configuration:configuration.get()]);
         auto request = [NSURLRequest requestWithURL:[NSURL URLWithString:@"http://www.opengl.org/"]];
         [webView loadRequest:request];
         Util::run(&done);
     };

     auto checkRequestBytesStartsWith = [&] (const char* string) {
         EXPECT_GT(requestBytes.size(), strlen(string));
         if (requestBytes.size() <= strlen(string))
             return;
         requestBytes[strlen(string)] = 0;
         EXPECT_WK_STREQ(requestBytes.data(), string);
     };

     runTest(true);
     checkRequestBytesStartsWith("CONNECT www.opengl.org:443 HTTP/1.1\r\n");
     runTest(false);
     checkRequestBytesStartsWith("GET http://www.opengl.org/ HTTP/1.1\r\n");

     EXPECT_TRUE([WKWebView _willUpgradeToHTTPS:[NSURL URLWithString:@"http://www.opengl.org/"]]);
     EXPECT_FALSE([WKWebView _willUpgradeToHTTPS:[NSURL URLWithString:@"https://www.opengl.org/"]]);
     EXPECT_FALSE([WKWebView _willUpgradeToHTTPS:[NSURL URLWithString:@"custom-scheme://www.opengl.org/"]]);
     EXPECT_FALSE([WKWebView _willUpgradeToHTTPS:[NSURL URLWithString:@"http://example.com/"]]);
 }

 TEST(WebKit, ConfigurationDisableJavaScript)
 {
     auto configuration = adoptNS([WKWebViewConfiguration new]);
     EXPECT_TRUE([configuration _allowsJavaScriptMarkup]);
     [configuration _setAllowsJavaScriptMarkup:NO];
     auto webView = adoptNS([[TestWKWebView alloc] initWithFrame:CGRectMake(0, 0, 100, 100) configuration:configuration.get()]);
     [webView synchronouslyLoadHTMLString:@"<body onload=\"document.write('FAIL');\">PASS</body>"];
     NSString *bodyHTML = [webView stringByEvaluatingJavaScript:@"document.body.innerHTML"];
     EXPECT_WK_STREQ(bodyHTML, @"PASS");
 }

 TEST(WebKit, ConfigurationDisableJavaScriptNestedBody)
 {
     auto configuration = adoptNS([WKWebViewConfiguration new]);
     EXPECT_TRUE([configuration _allowsJavaScriptMarkup]);
     [configuration _setAllowsJavaScriptMarkup:NO];
     auto webView = adoptNS([[TestWKWebView alloc] initWithFrame:CGRectMake(0, 0, 100, 100) configuration:configuration.get()]);
     [webView synchronouslyLoadHTMLString:@"<table><body onload=\"document.write('FAIL');\"></table>"];
     NSString *bodyHTML = [webView stringByEvaluatingJavaScript:@"document.body.innerHTML"];
     EXPECT_WK_STREQ(bodyHTML, @"<table></table>");
 }

 TEST(WebKit, ConfigurationDisableJavaScriptSVGAnimateElement)
 {
     auto configuration = adoptNS([WKWebViewConfiguration new]);
     EXPECT_TRUE([configuration _allowsJavaScriptMarkup]);
     [configuration _setAllowsJavaScriptMarkup:NO];
     auto webView = adoptNS([[TestWKWebView alloc] initWithFrame:CGRectMake(0, 0, 200, 200) configuration:configuration.get()]);
     [webView synchronouslyLoadHTMLString:@"<svg><a><rect fill=\"green\" width=\"10\" height=\"10\"></rect><animate attributeName=\"href\" to=\"javascript:document.write('FAIL')\"/></a></svg>"];
     NSString *bodyHTML = [webView stringByEvaluatingJavaScript:@"document.body.innerHTML"];
     EXPECT_WK_STREQ(bodyHTML, @"<svg><a><rect fill=\"green\" width=\"10\" height=\"10\"></rect><animate attributeName=\"href\"></animate></a></svg>");
 }

 TEST(WebKit, ConfigurationDisableJavaScriptSVGAnimateElementComplex)
 {
     auto configuration = adoptNS([WKWebViewConfiguration new]);
     EXPECT_TRUE([configuration _allowsJavaScriptMarkup]);
     [configuration _setAllowsJavaScriptMarkup:NO];
     auto webView = adoptNS([[TestWKWebView alloc] initWithFrame:CGRectMake(0, 0, 100, 100) configuration:configuration.get()]);
     [webView synchronouslyLoadHTMLString:@"<svg><a><rect fill=\"green\" width=\"10\" height=\"10\"></rect><animate attributeName=\"href\" dur=\"4s\" calcMode=\"spline\" repeatCount=\"indefinite\" values=\"javascript:document.write('FAIL'); javascript:document.write('FAIL'); javascript:document.write(location.href); javascript:document.write('FAIL'); javascript:document.write('FAIL')\" keyTimes=\"0; 0.25; 0.5; 0.75; 1\" keySplines=\"0.5 0 0.5 1; 0.5 0 0.5 1; 0.5 0 0.5 1; 0.5 0 0.5 1\"/></a></svg>"];
     NSString *bodyHTML = [webView stringByEvaluatingJavaScript:@"document.body.innerHTML"];
     EXPECT_WK_STREQ(bodyHTML, @"<svg><a><rect fill=\"green\" width=\"10\" height=\"10\"></rect><animate attributeName=\"href\" dur=\"4s\" calcMode=\"spline\" repeatCount=\"indefinite\" keyTimes=\"0; 0.25; 0.5; 0.75; 1\" keySplines=\"0.5 0 0.5 1; 0.5 0 0.5 1; 0.5 0 0.5 1; 0.5 0 0.5 1\"></animate></a></svg>");
 }
	/*
	* Copyright (C) 2017 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"

	#import "HTTPServer.h"
	#import "PlatformUtilities.h"
	#import "TestNavigationDelegate.h"
	#import "TestWKWebView.h"
	#import <WebKit/WKWebView.h>
	#import <WebKit/WKWebViewConfigurationPrivate.h>
	#import <WebKit/WKWebsiteDataStorePrivate.h>
	#import <WebKit/_WKWebsiteDataStoreConfiguration.h>
	#import <wtf/Function.h>
	#import <wtf/RetainPtr.h>

	TEST(WebKit, InvalidConfiguration)
	{
	auto shouldThrowExceptionWhenUsed = [](Function<void(WKWebViewConfiguration *)>&& modifier) {
	@try {
	auto configuration = adoptNS([[WKWebViewConfiguration alloc] init]);
	modifier(configuration.get());
	auto webView = adoptNS([[WKWebView alloc] initWithFrame:NSMakeRect(0, 0, 800, 600) configuration:configuration.get()]);
	EXPECT_TRUE(false);
	} @catch (NSException *exception) {
	EXPECT_WK_STREQ(NSInvalidArgumentException, exception.name);
	}
	};

	#pragma clang diagnostic push
	#pragma clang diagnostic ignored "-Wnonnull"
	shouldThrowExceptionWhenUsed([](WKWebViewConfiguration *configuration) {
	[configuration setProcessPool:nil];
	});
	shouldThrowExceptionWhenUsed([](WKWebViewConfiguration *configuration) {
	[configuration setPreferences:nil];
	});
	shouldThrowExceptionWhenUsed([](WKWebViewConfiguration *configuration) {
	[configuration setUserContentController:nil];
	});
	shouldThrowExceptionWhenUsed([](WKWebViewConfiguration *configuration) {
	[configuration setWebsiteDataStore:nil];
	});
	shouldThrowExceptionWhenUsed([](WKWebViewConfiguration *configuration) {
	[configuration _setVisitedLinkStore:nil];
	});
	#pragma clang diagnostic pop

	// Related WebViews cannot use different data stores.
	auto configurationForEphemeralView = adoptNS([[WKWebViewConfiguration alloc] init]);
	configurationForEphemeralView.get().websiteDataStore = [WKWebsiteDataStore nonPersistentDataStore];
	auto ephemeralWebView = adoptNS([[WKWebView alloc] initWithFrame:NSMakeRect(0, 0, 800, 600) configuration:configurationForEphemeralView.get()]);
	shouldThrowExceptionWhenUsed([&](WKWebViewConfiguration *configuration) {
	[configuration _setRelatedWebView:ephemeralWebView.get()];
	});
	}

	TEST(WebKit, ConfigurationGroupIdentifierIsCopied)
	{
	auto configuration = adoptNS([[WKWebViewConfiguration alloc] init]);
	[configuration _setGroupIdentifier:@"TestGroupIdentifier"];

	auto configuationCopy = adoptNS([configuration copy]);
	EXPECT_STREQ([configuration _groupIdentifier].UTF8String, [configuationCopy _groupIdentifier].UTF8String);
	}

	TEST(WebKit, DefaultConfigurationEME)
	{
	auto configuration = adoptNS([WKWebViewConfiguration new]);
	EXPECT_TRUE([configuration _legacyEncryptedMediaAPIEnabled]);
	auto webView = adoptNS([[WKWebView alloc] initWithFrame:CGRectMake(0, 0, 100, 100) configuration:configuration.get()]);
	[webView loadHTMLString:@"<html>hi</html>" baseURL:nil];
	__block bool done = false;
	[webView evaluateJavaScript:@"window.WebKitMediaKeys ? 'ENABLED' : 'DISABLED'" completionHandler:^(id result, NSError *){
	EXPECT_TRUE([result isEqualToString:@"ENABLED"]);
	done = true;
	}];
	TestWebKitAPI::Util::run(&done);
	}

	TEST(WebKit, ConfigurationHTTPSUpgrade)
	{
	using namespace TestWebKitAPI;
	bool done = false;
	Vector<char> requestBytes;
	HTTPServer server([&] (Connection connection) {
	connection.receiveHTTPRequest([&, connection](Vector<char>&& bytes) mutable {
	requestBytes = WTFMove(bytes);
	done = true;
	});
	});

	auto runTest = [&] (bool upgrade) {
	done = false;
	auto storeConfiguration = adoptNS([[_WKWebsiteDataStoreConfiguration alloc] initNonPersistentConfiguration]);
	[storeConfiguration setAllowsServerPreconnect:NO];
	[storeConfiguration setProxyConfiguration:@{
	(NSString *)kCFStreamPropertyHTTPSProxyHost: @"127.0.0.1",
	(NSString *)kCFStreamPropertyHTTPSProxyPort: @(server.port()),
	(NSString *)kCFStreamPropertyHTTPProxyHost: @"127.0.0.1",
	(NSString *)kCFStreamPropertyHTTPProxyPort: @(server.port()),
	}];
	auto store = adoptNS([[WKWebsiteDataStore alloc] _initWithConfiguration:storeConfiguration.get()]);
	auto configuration = adoptNS([WKWebViewConfiguration new]);
	[configuration setWebsiteDataStore:store.get()];
	[configuration setUpgradeKnownHostsToHTTPS:upgrade];
	auto webView = adoptNS([[WKWebView alloc] initWithFrame:CGRectZero configuration:configuration.get()]);
	auto request = [NSURLRequest requestWithURL:[NSURL URLWithString:@"http://www.opengl.org/"]];
	[webView loadRequest:request];
	Util::run(&done);
	};

	auto checkRequestBytesStartsWith = [&] (const char* string) {
	EXPECT_GT(requestBytes.size(), strlen(string));
	if (requestBytes.size() <= strlen(string))
	return;
	requestBytes[strlen(string)] = 0;
	EXPECT_WK_STREQ(requestBytes.data(), string);
	};

	runTest(true);
	checkRequestBytesStartsWith("CONNECT www.opengl.org:443 HTTP/1.1\r\n");
	runTest(false);
	checkRequestBytesStartsWith("GET http://www.opengl.org/ HTTP/1.1\r\n");

	EXPECT_TRUE([WKWebView _willUpgradeToHTTPS:[NSURL URLWithString:@"http://www.opengl.org/"]]);
	EXPECT_FALSE([WKWebView _willUpgradeToHTTPS:[NSURL URLWithString:@"https://www.opengl.org/"]]);
	EXPECT_FALSE([WKWebView _willUpgradeToHTTPS:[NSURL URLWithString:@"custom-scheme://www.opengl.org/"]]);
	EXPECT_FALSE([WKWebView _willUpgradeToHTTPS:[NSURL URLWithString:@"http://example.com/"]]);
	}

	TEST(WebKit, ConfigurationDisableJavaScript)
	{
	auto configuration = adoptNS([WKWebViewConfiguration new]);
	EXPECT_TRUE([configuration _allowsJavaScriptMarkup]);
	[configuration _setAllowsJavaScriptMarkup:NO];
	auto webView = adoptNS([[TestWKWebView alloc] initWithFrame:CGRectMake(0, 0, 100, 100) configuration:configuration.get()]);
	[webView synchronouslyLoadHTMLString:@"<body onload=\"document.write('FAIL');\">PASS</body>"];
	NSString *bodyHTML = [webView stringByEvaluatingJavaScript:@"document.body.innerHTML"];
	EXPECT_WK_STREQ(bodyHTML, @"PASS");
	}

	TEST(WebKit, ConfigurationDisableJavaScriptNestedBody)
	{
	auto configuration = adoptNS([WKWebViewConfiguration new]);
	EXPECT_TRUE([configuration _allowsJavaScriptMarkup]);
	[configuration _setAllowsJavaScriptMarkup:NO];
	auto webView = adoptNS([[TestWKWebView alloc] initWithFrame:CGRectMake(0, 0, 100, 100) configuration:configuration.get()]);
	[webView synchronouslyLoadHTMLString:@"<table><body onload=\"document.write('FAIL');\"></table>"];
	NSString *bodyHTML = [webView stringByEvaluatingJavaScript:@"document.body.innerHTML"];
	EXPECT_WK_STREQ(bodyHTML, @"<table></table>");
	}

	TEST(WebKit, ConfigurationDisableJavaScriptSVGAnimateElement)
	{
	auto configuration = adoptNS([WKWebViewConfiguration new]);
	EXPECT_TRUE([configuration _allowsJavaScriptMarkup]);
	[configuration _setAllowsJavaScriptMarkup:NO];
	auto webView = adoptNS([[TestWKWebView alloc] initWithFrame:CGRectMake(0, 0, 200, 200) configuration:configuration.get()]);
	[webView synchronouslyLoadHTMLString:@"<svg><a><rect fill=\"green\" width=\"10\" height=\"10\"></rect><animate attributeName=\"href\" to=\"javascript:document.write('FAIL')\"/></a></svg>"];
	NSString *bodyHTML = [webView stringByEvaluatingJavaScript:@"document.body.innerHTML"];
	EXPECT_WK_STREQ(bodyHTML, @"<svg><a><rect fill=\"green\" width=\"10\" height=\"10\"></rect><animate attributeName=\"href\"></animate></a></svg>");
	}

	TEST(WebKit, ConfigurationDisableJavaScriptSVGAnimateElementComplex)
	{
	auto configuration = adoptNS([WKWebViewConfiguration new]);
	EXPECT_TRUE([configuration _allowsJavaScriptMarkup]);
	[configuration _setAllowsJavaScriptMarkup:NO];
	auto webView = adoptNS([[TestWKWebView alloc] initWithFrame:CGRectMake(0, 0, 100, 100) configuration:configuration.get()]);
	[webView synchronouslyLoadHTMLString:@"<svg><a><rect fill=\"green\" width=\"10\" height=\"10\"></rect><animate attributeName=\"href\" dur=\"4s\" calcMode=\"spline\" repeatCount=\"indefinite\" values=\"javascript:document.write('FAIL'); javascript:document.write('FAIL'); javascript:document.write(location.href); javascript:document.write('FAIL'); javascript:document.write('FAIL')\" keyTimes=\"0; 0.25; 0.5; 0.75; 1\" keySplines=\"0.5 0 0.5 1; 0.5 0 0.5 1; 0.5 0 0.5 1; 0.5 0 0.5 1\"/></a></svg>"];
	NSString *bodyHTML = [webView stringByEvaluatingJavaScript:@"document.body.innerHTML"];
	EXPECT_WK_STREQ(bodyHTML, @"<svg><a><rect fill=\"green\" width=\"10\" height=\"10\"></rect><animate attributeName=\"href\" dur=\"4s\" calcMode=\"spline\" repeatCount=\"indefinite\" keyTimes=\"0; 0.25; 0.5; 0.75; 1\" keySplines=\"0.5 0 0.5 1; 0.5 0 0.5 1; 0.5 0 0.5 1; 0.5 0 0.5 1\"></animate></a></svg>");
	}