chromium/src/third_party/blink/renderer/core/mobile_metrics/mobile_friendliness_checker_test.cc - manifest_repos/chromium_src - Git at Google

 // Copyright 2014 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 "third_party/blink/renderer/core/mobile_metrics/mobile_friendliness_checker.h"
 #include "base/test/scoped_feature_list.h"
 #include "third_party/blink/public/common/mobile_metrics/mobile_friendliness.h"
 #include "third_party/blink/public/web/web_settings.h"
 #include "third_party/blink/renderer/core/frame/frame_test_helpers.h"
 #include "third_party/blink/renderer/core/frame/web_local_frame_impl.h"
 #include "third_party/blink/renderer/core/mobile_metrics/mobile_metrics_test_helpers.h"
 #include "third_party/blink/renderer/platform/testing/unit_test_helpers.h"
 #include "third_party/blink/renderer/platform/testing/url_test_helpers.h"

 namespace blink {

 static constexpr char kBaseUrl[] = "http://www.test.com/";
 class MobileFriendlinessCheckerTest : public testing::Test {
  public:
   ~MobileFriendlinessCheckerTest() override {
     url_test_helpers::UnregisterAllURLsAndClearMemoryCache();
   }

   void SetUp() override {
     scoped_feature_list_.InitAndEnableFeature(kSmallTextRatio);
   }

   static void ConfigureAndroidSettings(WebSettings* settings) {
     settings->SetViewportEnabled(true);
     settings->SetViewportMetaEnabled(true);
   }

   MobileFriendliness CalculateMetricsForHTMLString(const std::string& html) {
     mobile_metrics_test_helpers::TestWebFrameClient web_frame_client;
     {
       // This scope is required to make sure that ~WebViewHelper() is called
       // before the return value of this function is determined. Because
       // MobileFriendlinessChecker::NotifyDocumentDestroying is called in
       // destruction sequence of WebView.
       frame_test_helpers::WebViewHelper helper;
       helper.Initialize(&web_frame_client, nullptr, ConfigureAndroidSettings);
       helper.GetWebView()->EnableAutoResizeForTesting(gfx::Size(480, 800),
                                                       gfx::Size(480, 800));
       frame_test_helpers::LoadHTMLString(
           helper.GetWebView()->MainFrameImpl(), html,
           url_test_helpers::ToKURL("about:blank"));
       LocalFrameView& frame_view =
           *helper.GetWebView()->MainFrameImpl()->GetFrameView();
       frame_view.UpdateLifecycleToPrePaintClean(DocumentUpdateReason::kTest);
     }
     return web_frame_client.GetMobileFriendliness();
   }

   MobileFriendliness CalculateMetricsForFile(const std::string& path) {
     mobile_metrics_test_helpers::TestWebFrameClient web_frame_client;
     {
       // This scope is required to make sure that ~WebViewHelper() is called
       // before the return value of this function is determined. Because
       // MobileFriendlinessChecker::NotifyDocumentDestroying is called in
       // destruction sequence of WebView.
       frame_test_helpers::WebViewHelper helper;
       helper.Initialize(&web_frame_client, nullptr, ConfigureAndroidSettings);
       helper.GetWebView()->EnableAutoResizeForTesting(gfx::Size(480, 800),
                                                       gfx::Size(480, 800));
       url_test_helpers::RegisterMockedURLLoadFromBase(
           WebString::FromUTF8(kBaseUrl), blink::test::CoreTestDataPath(),
           WebString::FromUTF8(path));
       frame_test_helpers::LoadFrame(helper.GetWebView()->MainFrameImpl(),
                                     kBaseUrl + path);
       LocalFrameView& frame_view =
           *helper.GetWebView()->MainFrameImpl()->GetFrameView();
       frame_view.UpdateLifecycleToPrePaintClean(DocumentUpdateReason::kTest);
     }
     return web_frame_client.GetMobileFriendliness();
   }

  private:
   base::test::ScopedFeatureList scoped_feature_list_;
 };

 TEST_F(MobileFriendlinessCheckerTest, NoViewportSetting) {
   MobileFriendliness expected_mf;
   expected_mf.small_text_ratio = 100;
   MobileFriendliness actual_mf =
       CalculateMetricsForHTMLString("<body>bar</body>");
   EXPECT_EQ(expected_mf, actual_mf);
 }

 TEST_F(MobileFriendlinessCheckerTest, DeviceWidth) {
   MobileFriendliness expected_mf;
   expected_mf.viewport_device_width = true;
   MobileFriendliness actual_mf =
       CalculateMetricsForFile("viewport/viewport-1.html");
   EXPECT_EQ(expected_mf, actual_mf);
 }

 TEST_F(MobileFriendlinessCheckerTest, HardcodedViewport) {
   MobileFriendliness expected_mf;
   expected_mf.viewport_hardcoded_width = 200;
   MobileFriendliness actual_mf =
       CalculateMetricsForFile("viewport/viewport-30.html");
   EXPECT_EQ(expected_mf, actual_mf);
 }

 TEST_F(MobileFriendlinessCheckerTest, DeviceWidthWithInitialScale05) {
   // Specifying initial-scale=0.5 is usually not the best choice for most web
   // pages. But we cannot determine that such page must not be mobile friendly.
   MobileFriendliness expected_mf;
   expected_mf.viewport_device_width = true;
   expected_mf.viewport_initial_scale = 0.5;
   MobileFriendliness actual_mf =
       CalculateMetricsForFile("viewport/viewport-34.html");
   EXPECT_EQ(expected_mf, actual_mf);
 }

 TEST_F(MobileFriendlinessCheckerTest, UserZoom) {
   MobileFriendliness expected_mf;
   expected_mf.viewport_device_width = true;
   expected_mf.viewport_initial_scale = 2.0;
   expected_mf.allow_user_zoom = false;
   expected_mf.small_text_ratio = 100;
   MobileFriendliness actual_mf = CalculateMetricsForFile(
       "viewport-initial-scale-and-user-scalable-no.html");
   EXPECT_EQ(expected_mf, actual_mf);
 }

 TEST_F(MobileFriendlinessCheckerTest, NoText) {
   MobileFriendliness expected_mf;
   expected_mf.small_text_ratio = 0;
   MobileFriendliness actual_mf =
       CalculateMetricsForHTMLString(R"(<body></body>)");
   EXPECT_EQ(expected_mf, actual_mf);
 }

 TEST_F(MobileFriendlinessCheckerTest, NoSmallFonts) {
   MobileFriendliness expected_mf;
   expected_mf.small_text_ratio = 0;
   MobileFriendliness actual_mf = CalculateMetricsForHTMLString(R"(
 <div style="font-size: 12px">
   This is legible font size example.
 </div>
 )");
   EXPECT_EQ(expected_mf, actual_mf);
 }

 TEST_F(MobileFriendlinessCheckerTest, OnlySmallFonts) {
   MobileFriendliness expected_mf;
   expected_mf.small_text_ratio = 100;
   MobileFriendliness actual_mf = CalculateMetricsForHTMLString(R"(
 <div style="font-size:7px">
   Small font text.
 </div>
 )");
   EXPECT_EQ(expected_mf, actual_mf);
 }

 TEST_F(MobileFriendlinessCheckerTest, MostlySmallFont) {
   MobileFriendliness actual_mf = CalculateMetricsForHTMLString(R"(
 <div style="font-size:12px">
   legible text.
   <div style="font-size:8px">
     The quick brown fox jumps over the lazy dog.<br>
     The quick brown fox jumps over the lazy dog.<br>
     The quick brown fox jumps over the lazy dog.<br>
     The quick brown fox jumps over the lazy dog.<br>
     The quick brown fox jumps over the lazy dog.<br>
     The quick brown fox jumps over the lazy dog.<br>
     The quick brown fox jumps over the lazy dog.<br>
     The quick brown fox jumps over the lazy dog.<br>
     The quick brown fox jumps over the lazy dog.<br>
     The quick brown fox jumps over the lazy dog.<br>
     The quick brown fox jumps over the lazy dog.<br>
     The quick brown fox jumps over the lazy dog.<br>
     The quick brown fox jumps over the lazy dog.<br>
     The quick brown fox jumps over the lazy dog.<br>
     The quick brown fox jumps over the lazy dog.<br>
     The quick brown fox jumps over the lazy dog.<br>
     The quick brown fox jumps over the lazy dog.<br>
     The quick brown fox jumps over the lazy dog.<br>
     The quick brown fox jumps over the lazy dog.<br>
     The quick brown fox jumps over the lazy dog.<br>
     The quick brown fox jumps over the lazy dog.<br>
     The quick brown fox jumps over the lazy dog.<br>
     The quick brown fox jumps over the lazy dog.<br>
   </div>
 </div>
 )");
   EXPECT_LT(actual_mf.small_text_ratio, 100);
   EXPECT_GT(actual_mf.small_text_ratio, 80);
 }

 TEST_F(MobileFriendlinessCheckerTest, MostlySmallInSpan) {
   MobileFriendliness actual_mf = CalculateMetricsForHTMLString(R"(
 <div style="font-size: 12px">
   x
   <span style="font-size:11px">
     This is the majority part of the document.
   </span>
   y
 </div>
 )");
   EXPECT_LT(actual_mf.small_text_ratio, 100);
   EXPECT_GT(actual_mf.small_text_ratio, 80);
 }

 TEST_F(MobileFriendlinessCheckerTest, MultipleDivs) {
   MobileFriendliness actual_mf = CalculateMetricsForHTMLString(R"(
 <div style="font-size: 12px">
   x
   <div style="font-size:11px">
     middle of div
     <div style="font-size:1px">
       inner of div
     </div>
   </div>
   y
 </div>
 )");
   EXPECT_LT(actual_mf.small_text_ratio, 100);
   EXPECT_GT(actual_mf.small_text_ratio, 80);
 }

 TEST_F(MobileFriendlinessCheckerTest, DontCountInvisibleSmallFontArea) {
   MobileFriendliness expected_mf;
   MobileFriendliness actual_mf = CalculateMetricsForHTMLString(R"(
 <html>
   <body>
     <div style="font-size: 12px">
       x
       <div style="font-size:4px;display:none;">
         this is an invisible string.
       </div>
     </div>
   </body>
 </html>
 )");
   EXPECT_EQ(expected_mf, actual_mf);
 }

 TEST_F(MobileFriendlinessCheckerTest, ScaleZoomedLegibleFont) {
   MobileFriendliness expected_mf;
   expected_mf.viewport_device_width = true;
   expected_mf.viewport_initial_scale = 10;
   expected_mf.small_text_ratio = 0;
   MobileFriendliness actual_mf = CalculateMetricsForHTMLString(R"(
 <html>
   <head>
     <meta name="viewport" content="width=device-width, initial-scale=10">
   </head>
   <body style="font-size: 5px">
     Legible text in 50px.
   </body>
 </html>
 )");
   EXPECT_EQ(expected_mf, actual_mf);
 }

 TEST_F(MobileFriendlinessCheckerTest, ViewportZoomedOutIllegibleFont) {
   MobileFriendliness expected_mf;
   expected_mf.viewport_hardcoded_width = 480;
   expected_mf.viewport_initial_scale = 0.5;
   expected_mf.small_text_ratio = 100;
   MobileFriendliness actual_mf = CalculateMetricsForHTMLString(R"(
 <html>
   <head>
     <meta name="viewport" content="width=480, initial-scale=0.5">
   </head>
   <body style="font-size: 22px; width: 960px">
     Illegible text in 11px.
   </body>
 </html>
 )");
   EXPECT_EQ(expected_mf, actual_mf);
 }

 TEST_F(MobileFriendlinessCheckerTest, TooWideViewportWidthIllegibleFont) {
   MobileFriendliness expected_mf;
   expected_mf.viewport_hardcoded_width = 960;
   expected_mf.small_text_ratio = 100;
   MobileFriendliness actual_mf = CalculateMetricsForHTMLString(R"(
 <html>
   <head>
     <meta name="viewport" content="width=960">
   </head>
   <body style="font-size: 12px">
     Illegible text in 6px.
   </body>
 </html>
 )");
   EXPECT_EQ(expected_mf, actual_mf);
 }

 TEST_F(MobileFriendlinessCheckerTest, CSSZoomedIllegibleFont) {
   MobileFriendliness expected_mf;
   expected_mf.small_text_ratio = 100;
   MobileFriendliness actual_mf = CalculateMetricsForHTMLString(R"(
 <html>
   <body style="font-size: 12px; zoom:50%">
     Illegible text in 6px.
   </body>
 </html>
 )");
   EXPECT_EQ(expected_mf, actual_mf);
 }

 }  // namespace blink
	// Copyright 2014 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 "third_party/blink/renderer/core/mobile_metrics/mobile_friendliness_checker.h"
	#include "base/test/scoped_feature_list.h"
	#include "third_party/blink/public/common/mobile_metrics/mobile_friendliness.h"
	#include "third_party/blink/public/web/web_settings.h"
	#include "third_party/blink/renderer/core/frame/frame_test_helpers.h"
	#include "third_party/blink/renderer/core/frame/web_local_frame_impl.h"
	#include "third_party/blink/renderer/core/mobile_metrics/mobile_metrics_test_helpers.h"
	#include "third_party/blink/renderer/platform/testing/unit_test_helpers.h"
	#include "third_party/blink/renderer/platform/testing/url_test_helpers.h"

	namespace blink {

	static constexpr char kBaseUrl[] = "http://www.test.com/";
	class MobileFriendlinessCheckerTest : public testing::Test {
	public:
	~MobileFriendlinessCheckerTest() override {
	url_test_helpers::UnregisterAllURLsAndClearMemoryCache();
	}

	void SetUp() override {
	scoped_feature_list_.InitAndEnableFeature(kSmallTextRatio);
	}

	static void ConfigureAndroidSettings(WebSettings* settings) {
	settings->SetViewportEnabled(true);
	settings->SetViewportMetaEnabled(true);
	}

	MobileFriendliness CalculateMetricsForHTMLString(const std::string& html) {
	mobile_metrics_test_helpers::TestWebFrameClient web_frame_client;
	{
	// This scope is required to make sure that ~WebViewHelper() is called
	// before the return value of this function is determined. Because
	// MobileFriendlinessChecker::NotifyDocumentDestroying is called in
	// destruction sequence of WebView.
	frame_test_helpers::WebViewHelper helper;
	helper.Initialize(&web_frame_client, nullptr, ConfigureAndroidSettings);
	helper.GetWebView()->EnableAutoResizeForTesting(gfx::Size(480, 800),
	gfx::Size(480, 800));
	frame_test_helpers::LoadHTMLString(
	helper.GetWebView()->MainFrameImpl(), html,
	url_test_helpers::ToKURL("about:blank"));
	LocalFrameView& frame_view =
	*helper.GetWebView()->MainFrameImpl()->GetFrameView();
	frame_view.UpdateLifecycleToPrePaintClean(DocumentUpdateReason::kTest);
	}
	return web_frame_client.GetMobileFriendliness();
	}

	MobileFriendliness CalculateMetricsForFile(const std::string& path) {
	mobile_metrics_test_helpers::TestWebFrameClient web_frame_client;
	{
	// This scope is required to make sure that ~WebViewHelper() is called
	// before the return value of this function is determined. Because
	// MobileFriendlinessChecker::NotifyDocumentDestroying is called in
	// destruction sequence of WebView.
	frame_test_helpers::WebViewHelper helper;
	helper.Initialize(&web_frame_client, nullptr, ConfigureAndroidSettings);
	helper.GetWebView()->EnableAutoResizeForTesting(gfx::Size(480, 800),
	gfx::Size(480, 800));
	url_test_helpers::RegisterMockedURLLoadFromBase(
	WebString::FromUTF8(kBaseUrl), blink::test::CoreTestDataPath(),
	WebString::FromUTF8(path));
	frame_test_helpers::LoadFrame(helper.GetWebView()->MainFrameImpl(),
	kBaseUrl + path);
	LocalFrameView& frame_view =
	*helper.GetWebView()->MainFrameImpl()->GetFrameView();
	frame_view.UpdateLifecycleToPrePaintClean(DocumentUpdateReason::kTest);
	}
	return web_frame_client.GetMobileFriendliness();
	}

	private:
	base::test::ScopedFeatureList scoped_feature_list_;
	};

	TEST_F(MobileFriendlinessCheckerTest, NoViewportSetting) {
	MobileFriendliness expected_mf;
	expected_mf.small_text_ratio = 100;
	MobileFriendliness actual_mf =
	CalculateMetricsForHTMLString("<body>bar</body>");
	EXPECT_EQ(expected_mf, actual_mf);
	}

	TEST_F(MobileFriendlinessCheckerTest, DeviceWidth) {
	MobileFriendliness expected_mf;
	expected_mf.viewport_device_width = true;
	MobileFriendliness actual_mf =
	CalculateMetricsForFile("viewport/viewport-1.html");
	EXPECT_EQ(expected_mf, actual_mf);
	}

	TEST_F(MobileFriendlinessCheckerTest, HardcodedViewport) {
	MobileFriendliness expected_mf;
	expected_mf.viewport_hardcoded_width = 200;
	MobileFriendliness actual_mf =
	CalculateMetricsForFile("viewport/viewport-30.html");
	EXPECT_EQ(expected_mf, actual_mf);
	}

	TEST_F(MobileFriendlinessCheckerTest, DeviceWidthWithInitialScale05) {
	// Specifying initial-scale=0.5 is usually not the best choice for most web
	// pages. But we cannot determine that such page must not be mobile friendly.
	MobileFriendliness expected_mf;
	expected_mf.viewport_device_width = true;
	expected_mf.viewport_initial_scale = 0.5;
	MobileFriendliness actual_mf =
	CalculateMetricsForFile("viewport/viewport-34.html");
	EXPECT_EQ(expected_mf, actual_mf);
	}

	TEST_F(MobileFriendlinessCheckerTest, UserZoom) {
	MobileFriendliness expected_mf;
	expected_mf.viewport_device_width = true;
	expected_mf.viewport_initial_scale = 2.0;
	expected_mf.allow_user_zoom = false;
	expected_mf.small_text_ratio = 100;
	MobileFriendliness actual_mf = CalculateMetricsForFile(
	"viewport-initial-scale-and-user-scalable-no.html");
	EXPECT_EQ(expected_mf, actual_mf);
	}

	TEST_F(MobileFriendlinessCheckerTest, NoText) {
	MobileFriendliness expected_mf;
	expected_mf.small_text_ratio = 0;
	MobileFriendliness actual_mf =
	CalculateMetricsForHTMLString(R"(<body></body>)");
	EXPECT_EQ(expected_mf, actual_mf);
	}

	TEST_F(MobileFriendlinessCheckerTest, NoSmallFonts) {
	MobileFriendliness expected_mf;
	expected_mf.small_text_ratio = 0;
	MobileFriendliness actual_mf = CalculateMetricsForHTMLString(R"(
	<div style="font-size: 12px">
	This is legible font size example.
	</div>
	)");
	EXPECT_EQ(expected_mf, actual_mf);
	}

	TEST_F(MobileFriendlinessCheckerTest, OnlySmallFonts) {
	MobileFriendliness expected_mf;
	expected_mf.small_text_ratio = 100;
	MobileFriendliness actual_mf = CalculateMetricsForHTMLString(R"(
	<div style="font-size:7px">
	Small font text.
	</div>
	)");
	EXPECT_EQ(expected_mf, actual_mf);
	}

	TEST_F(MobileFriendlinessCheckerTest, MostlySmallFont) {
	MobileFriendliness actual_mf = CalculateMetricsForHTMLString(R"(
	<div style="font-size:12px">
	legible text.
	<div style="font-size:8px">
	The quick brown fox jumps over the lazy dog.<br>
	The quick brown fox jumps over the lazy dog.<br>
	The quick brown fox jumps over the lazy dog.<br>
	The quick brown fox jumps over the lazy dog.<br>
	The quick brown fox jumps over the lazy dog.<br>
	The quick brown fox jumps over the lazy dog.<br>
	The quick brown fox jumps over the lazy dog.<br>
	The quick brown fox jumps over the lazy dog.<br>
	The quick brown fox jumps over the lazy dog.<br>
	The quick brown fox jumps over the lazy dog.<br>
	The quick brown fox jumps over the lazy dog.<br>
	The quick brown fox jumps over the lazy dog.<br>
	The quick brown fox jumps over the lazy dog.<br>
	The quick brown fox jumps over the lazy dog.<br>
	The quick brown fox jumps over the lazy dog.<br>
	The quick brown fox jumps over the lazy dog.<br>
	The quick brown fox jumps over the lazy dog.<br>
	The quick brown fox jumps over the lazy dog.<br>
	The quick brown fox jumps over the lazy dog.<br>
	The quick brown fox jumps over the lazy dog.<br>
	The quick brown fox jumps over the lazy dog.<br>
	The quick brown fox jumps over the lazy dog.<br>
	The quick brown fox jumps over the lazy dog.<br>
	</div>
	</div>
	)");
	EXPECT_LT(actual_mf.small_text_ratio, 100);
	EXPECT_GT(actual_mf.small_text_ratio, 80);
	}

	TEST_F(MobileFriendlinessCheckerTest, MostlySmallInSpan) {
	MobileFriendliness actual_mf = CalculateMetricsForHTMLString(R"(
	<div style="font-size: 12px">
	x
	<span style="font-size:11px">
	This is the majority part of the document.
	</span>
	y
	</div>
	)");
	EXPECT_LT(actual_mf.small_text_ratio, 100);
	EXPECT_GT(actual_mf.small_text_ratio, 80);
	}

	TEST_F(MobileFriendlinessCheckerTest, MultipleDivs) {
	MobileFriendliness actual_mf = CalculateMetricsForHTMLString(R"(
	<div style="font-size: 12px">
	x
	<div style="font-size:11px">
	middle of div
	<div style="font-size:1px">
	inner of div
	</div>
	</div>
	y
	</div>
	)");
	EXPECT_LT(actual_mf.small_text_ratio, 100);
	EXPECT_GT(actual_mf.small_text_ratio, 80);
	}

	TEST_F(MobileFriendlinessCheckerTest, DontCountInvisibleSmallFontArea) {
	MobileFriendliness expected_mf;
	MobileFriendliness actual_mf = CalculateMetricsForHTMLString(R"(
	<html>
	<body>
	<div style="font-size: 12px">
	x
	<div style="font-size:4px;display:none;">
	this is an invisible string.
	</div>
	</div>
	</body>
	</html>
	)");
	EXPECT_EQ(expected_mf, actual_mf);
	}

	TEST_F(MobileFriendlinessCheckerTest, ScaleZoomedLegibleFont) {
	MobileFriendliness expected_mf;
	expected_mf.viewport_device_width = true;
	expected_mf.viewport_initial_scale = 10;
	expected_mf.small_text_ratio = 0;
	MobileFriendliness actual_mf = CalculateMetricsForHTMLString(R"(
	<html>
	<head>
	<meta name="viewport" content="width=device-width, initial-scale=10">
	</head>
	<body style="font-size: 5px">
	Legible text in 50px.
	</body>
	</html>
	)");
	EXPECT_EQ(expected_mf, actual_mf);
	}

	TEST_F(MobileFriendlinessCheckerTest, ViewportZoomedOutIllegibleFont) {
	MobileFriendliness expected_mf;
	expected_mf.viewport_hardcoded_width = 480;
	expected_mf.viewport_initial_scale = 0.5;
	expected_mf.small_text_ratio = 100;
	MobileFriendliness actual_mf = CalculateMetricsForHTMLString(R"(
	<html>
	<head>
	<meta name="viewport" content="width=480, initial-scale=0.5">
	</head>
	<body style="font-size: 22px; width: 960px">
	Illegible text in 11px.
	</body>
	</html>
	)");
	EXPECT_EQ(expected_mf, actual_mf);
	}

	TEST_F(MobileFriendlinessCheckerTest, TooWideViewportWidthIllegibleFont) {
	MobileFriendliness expected_mf;
	expected_mf.viewport_hardcoded_width = 960;
	expected_mf.small_text_ratio = 100;
	MobileFriendliness actual_mf = CalculateMetricsForHTMLString(R"(
	<html>
	<head>
	<meta name="viewport" content="width=960">
	</head>
	<body style="font-size: 12px">
	Illegible text in 6px.
	</body>
	</html>
	)");
	EXPECT_EQ(expected_mf, actual_mf);
	}

	TEST_F(MobileFriendlinessCheckerTest, CSSZoomedIllegibleFont) {
	MobileFriendliness expected_mf;
	expected_mf.small_text_ratio = 100;
	MobileFriendliness actual_mf = CalculateMetricsForHTMLString(R"(
	<html>
	<body style="font-size: 12px; zoom:50%">
	Illegible text in 6px.
	</body>
	</html>
	)");
	EXPECT_EQ(expected_mf, actual_mf);
	}

	} // namespace blink