ios/chrome/browser/ui/util/manual_text_framer_unittest.mm - chromium/src - Git at Google

 // Copyright 2015 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 "ios/chrome/browser/ui/util/manual_text_framer.h"

 #include "base/mac/foundation_util.h"
 #include "base/time/time.h"
 #import "ios/chrome/browser/ui/util/core_text_util.h"
 #import "ios/chrome/browser/ui/util/text_frame.h"
 #import "ios/third_party/material_roboto_font_loader_ios/src/src/MaterialRobotoFontLoader.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "testing/gtest_mac.h"
 #include "testing/platform_test.h"
 #include "url/gurl.h"

 #if !defined(__has_feature) || !__has_feature(objc_arc)
 #error "This file requires ARC support."
 #endif

 namespace {
 // Copy of ManualTextFramer's alignment function.
 enum class AlignmentFunction : short { CEIL = 0, FLOOR };
 CGFloat AlignValueToPixel(CGFloat value, AlignmentFunction function) {
   static CGFloat scale = [[UIScreen mainScreen] scale];
   return function == AlignmentFunction::CEIL ? ceil(value * scale) / scale
                                              : floor(value * scale) / scale;
 }

 class ManualTextFramerTest : public PlatformTest {
  protected:
   ManualTextFramerTest() {
     attributes_ = [[NSMutableDictionary alloc] init];
     string_ = [[NSMutableAttributedString alloc] init];
   }

   NSString* text() { return [string_ string]; }
   NSRange text_range() { return NSMakeRange(0, [string_ length]); }
   id<TextFrame> text_frame() { return static_cast<id<TextFrame>>(text_frame_); }

   void SetText(NSString* text) {
     DCHECK(text.length);
     [[string_ mutableString] setString:text];
   }

   void FrameTextInBounds(CGRect bounds) {
     ManualTextFramer* manual_framer =
         [[ManualTextFramer alloc] initWithString:string_ inBounds:bounds];
     [manual_framer frameText];
     id frame = [manual_framer textFrame];
     text_frame_ = frame;
   }

   UIFont* RobotoFontWithSize(CGFloat size) {
     return [[MDFRobotoFontLoader sharedInstance] regularFontOfSize:size];
   }

   NSParagraphStyle* CreateParagraphStyle(CGFloat line_height,
                                          NSTextAlignment alignment,
                                          NSLineBreakMode line_break_mode) {
     NSMutableParagraphStyle* style = [[NSMutableParagraphStyle alloc] init];
     style.alignment = alignment;
     style.lineBreakMode = line_break_mode;
     style.minimumLineHeight = line_height;
     style.maximumLineHeight = line_height;
     return style;
   }

   NSMutableDictionary* attributes() { return attributes_; }

   void ApplyAttributesForRange(NSRange range) {
     [string_ setAttributes:attributes_ range:range];
   }

   void CheckForLineCountAndFramedRange(NSUInteger line_count,
                                        NSRange framed_range) {
     EXPECT_EQ(line_count, text_frame().lines.count);
     EXPECT_EQ(framed_range.location, text_frame().framedRange.location);
     EXPECT_EQ(framed_range.length, text_frame().framedRange.length);
   }

   NSMutableDictionary* attributes_;
   NSMutableAttributedString* string_;
   id<TextFrame> text_frame_;
 };

 // Tests that newline characters cause an attributed string to be laid out on
 // multiple lines.
 TEST_F(ManualTextFramerTest, NewlineTest) {
   SetText(@"line one\nline two\nline three");
   attributes()[NSFontAttributeName] = RobotoFontWithSize(14.0);
   attributes()[NSParagraphStyleAttributeName] = CreateParagraphStyle(
       20.0, NSTextAlignmentNatural, NSLineBreakByWordWrapping);
   ApplyAttributesForRange(text_range());
   CGRect bounds = CGRectMake(0, 0, 500, 500);
   FrameTextInBounds(bounds);
   CheckForLineCountAndFramedRange(3, text_range());
 }

 // Tests that strings with no spaces fail correctly.
 TEST_F(ManualTextFramerTest, NoSpacesText) {
   // "St. Mary's church in the hollow of the white hazel near the the rapid
   // whirlpool of Llantysilio of the red cave."
   SetText(
       @"Llanfairpwllgwyngyllgogerychwyrndrobwllllantysiliogogogoch");
   attributes()[NSFontAttributeName] = RobotoFontWithSize(16.0);
   attributes()[NSParagraphStyleAttributeName] = CreateParagraphStyle(
       20.0, NSTextAlignmentNatural, NSLineBreakByWordWrapping);
   ApplyAttributesForRange(text_range());
   CGRect bounds = CGRectMake(0, 0, 200, 60);
   FrameTextInBounds(bounds);
   CheckForLineCountAndFramedRange(0, NSMakeRange(0, 0));
 }

 // Tests that multiple newlines are accounted for.  Only the first three
 // newlines should be added to |lines_|.
 TEST_F(ManualTextFramerTest, MultipleNewlineTest) {
   SetText(@"\n\n\ntext");
   attributes()[NSParagraphStyleAttributeName] = CreateParagraphStyle(
       20.0, NSTextAlignmentNatural, NSLineBreakByWordWrapping);
   ApplyAttributesForRange(text_range());
   CGRect bounds = CGRectMake(0, 0, 500, 60);
   FrameTextInBounds(bounds);
   CheckForLineCountAndFramedRange(3, NSMakeRange(0, 3));
 }

 // Tests that the framed range for text that will be rendered with ligatures is
 // corresponds with the actual range of the text.
 TEST_F(ManualTextFramerTest, LigatureTest) {
   SetText(@"fffi");
   attributes()[NSFontAttributeName] = RobotoFontWithSize(14.0);
   attributes()[NSParagraphStyleAttributeName] = CreateParagraphStyle(
       20.0, NSTextAlignmentNatural, NSLineBreakByWordWrapping);
   ApplyAttributesForRange(text_range());
   CGRect bounds = CGRectMake(0, 0, 500, 20);
   FrameTextInBounds(bounds);
   CheckForLineCountAndFramedRange(1, text_range());
 }

 // Tests that ManualTextFramer correctly frames Å
 TEST_F(ManualTextFramerTest, DiacriticTest) {
   SetText(@"A\u030A");
   attributes()[NSFontAttributeName] = RobotoFontWithSize(14.0);
   attributes()[NSParagraphStyleAttributeName] = CreateParagraphStyle(
       20.0, NSTextAlignmentNatural, NSLineBreakByWordWrapping);
   ApplyAttributesForRange(text_range());
   CGRect bounds = CGRectMake(0, 0, 500, 20);
   FrameTextInBounds(bounds);
   CheckForLineCountAndFramedRange(1, text_range());
 }

 // String text, attributes, and bounds are chosen to match the "Terms of
 // Service" text in WelcomeToChromeView, as the text is not properly framed by
 // CTFrameSetter. http://crbug.com/537212
 TEST_F(ManualTextFramerTest, TOSTextTest) {
   CGRect bounds = CGRectMake(0, 0, 300.0, 40.0);
   NSString* const kTOSLinkText = @"Terms of Service";
   NSString* const kTOSText =
       @"By using this application, you agree to Chrome’s Terms of Service.";
   SetText(kTOSText);
   attributes()[NSFontAttributeName] = RobotoFontWithSize(14.0);
   attributes()[NSParagraphStyleAttributeName] = CreateParagraphStyle(
       20.0, NSTextAlignmentCenter, NSLineBreakByTruncatingTail);
   attributes()[NSForegroundColorAttributeName] = [UIColor blackColor];
   ApplyAttributesForRange(text_range());
   attributes()[NSForegroundColorAttributeName] = [UIColor blueColor];
   ApplyAttributesForRange([kTOSText rangeOfString:kTOSLinkText]);
   FrameTextInBounds(bounds);
   CheckForLineCountAndFramedRange(2, text_range());
 }

 // Tests that the origin of a left-aligned single line is correct.
 TEST_F(ManualTextFramerTest, SimpleOriginTest) {
   SetText(@"test");
   UIFont* font = RobotoFontWithSize(14.0);
   attributes()[NSFontAttributeName] = font;
   CGFloat line_height = 20.0;
   attributes()[NSParagraphStyleAttributeName] = CreateParagraphStyle(
       line_height, NSTextAlignmentLeft, NSLineBreakByWordWrapping);
   ApplyAttributesForRange(text_range());
   CGRect bounds = CGRectMake(0, 0, 500, 21);
   FrameTextInBounds(bounds);
   CheckForLineCountAndFramedRange(1, text_range());
   FramedLine* line = [text_frame().lines firstObject];
   EXPECT_EQ(0, line.origin.x);
   EXPECT_EQ(
       AlignValueToPixel(CGRectGetHeight(bounds) - line_height - font.descender,
                         AlignmentFunction::FLOOR),
       line.origin.y);
 }

 // Tests that lines that are laid out in RTL are right aligned.
 TEST_F(ManualTextFramerTest, OriginRTLTest) {
   SetText(@"\u0641\u064e\u0628\u064e\u0642\u064e\u064a\u0652\u062a\u064f\u0020"
           @"\u0645\u064f\u062a\u064e\u0627\u0628\u0650\u0639\u064e\u0627\u064b"
           @"\u0020\u0028\u0634\u064f\u063a\u0652\u0644\u0650\u064a\u0029\u0020"
           @"\u0644\u064e\u0639\u064e\u0644\u064e\u0643\u0650\u0020\u062a\u064e"
           @"\u062a\u064e\u0639\u064e\u0644\u0651\u064e\u0645\u064e\u0020\u0627"
           @"\u0644\u062d\u0650\u0631\u0652\u0635\u064e\u0020\u0639\u064e\u0644"
           @"\u064e\u0649\u0020\u0627\u0644\u0648\u064e\u0642\u0652\u062a\u0650"
           @"\u0020\u002e\u0020\u0641\u064e\u0627\u0644\u062d\u064e\u064a\u064e"
           @"\u0627\u0629\u064f");
   attributes()[NSFontAttributeName] = RobotoFontWithSize(14.0);
   attributes()[NSParagraphStyleAttributeName] = CreateParagraphStyle(
       20.0, NSTextAlignmentNatural, NSLineBreakByWordWrapping);
   ApplyAttributesForRange(text_range());
   CGRect bounds = CGRectMake(0, 0, 100.0, 60.0);
   FrameTextInBounds(bounds);
   CheckForLineCountAndFramedRange(3, text_range());
   for (FramedLine* line in text_frame().lines) {
     CGFloat line_width =
         AlignValueToPixel(core_text_util::GetTrimmedLineWidth(line.line),
                           AlignmentFunction::CEIL);
     EXPECT_EQ(CGRectGetMaxX(bounds), line.origin.x + line_width);
   }
 }

 TEST_F(ManualTextFramerTest, CJKLineBreakTest) {
   // Example from our strings. Framer will put “触摸搜索” on one line, and then
   // fail to frame the second.
   // clang-format off
   SetText(@"“触摸搜索”会将所选字词和当前页面（作为上下文）一起发送给 Google 搜索。"
           @"您可以在设置中停用此功能。");
   // clang-format on
   attributes()[NSFontAttributeName] = RobotoFontWithSize(16.0);
   attributes()[NSParagraphStyleAttributeName] = CreateParagraphStyle(
       16 * 1.15, NSTextAlignmentNatural, NSLineBreakByWordWrapping);
   ApplyAttributesForRange(text_range());
   CGRect bounds = CGRectMake(0, 0, 300.0, 65.0);
   FrameTextInBounds(bounds);
   CheckForLineCountAndFramedRange(3, NSMakeRange(0, 53));

   // Example without any space-ish characters:
   // clang-format off
   SetText(@"会将所选字词和当前页面（作为上下文）一起发送给Google搜索。"
           @"您可以在设置中停用此功能。");
   // clang-format on
   attributes()[NSFontAttributeName] = RobotoFontWithSize(16.0);
   attributes()[NSParagraphStyleAttributeName] = CreateParagraphStyle(
       16 * 1.15, NSTextAlignmentNatural, NSLineBreakByWordWrapping);
   ApplyAttributesForRange(text_range());
   FrameTextInBounds(bounds);
   CheckForLineCountAndFramedRange(2, NSMakeRange(0, 45));
 }

 // Tests that paragraphs with NSTextAlignmentCenter are actually centered.
 TEST_F(ManualTextFramerTest, CenterAlignedTest) {
   SetText(@"xxxx\nyyy\nwww");
   attributes()[NSFontAttributeName] = RobotoFontWithSize(14.0);
   attributes()[NSParagraphStyleAttributeName] = CreateParagraphStyle(
       20.0, NSTextAlignmentCenter, NSLineBreakByWordWrapping);
   ApplyAttributesForRange(text_range());
   CGRect bounds = CGRectMake(0, 0, 200.0, 60.0);
   FrameTextInBounds(bounds);
   CheckForLineCountAndFramedRange(3, text_range());
   for (FramedLine* line in text_frame().lines) {
     CGFloat line_width =
         AlignValueToPixel(core_text_util::GetTrimmedLineWidth(line.line),
                           AlignmentFunction::CEIL);
     EXPECT_EQ(AlignValueToPixel(CGRectGetMidX(bounds) - 0.5 * line_width,
                                 AlignmentFunction::FLOOR),
               line.origin.x);
   }
 }

 // Tests that words with a large line height will not be framed if they don't
 // fit in the bounding height.
 TEST_F(ManualTextFramerTest, LargeLineHeightTest) {
   SetText(@"the last word is very LARGE");
   attributes()[NSFontAttributeName] = RobotoFontWithSize(14.0);
   attributes()[NSParagraphStyleAttributeName] = CreateParagraphStyle(
       20.0, NSTextAlignmentCenter, NSLineBreakByWordWrapping);
   ApplyAttributesForRange(text_range());
   attributes()[NSParagraphStyleAttributeName] = CreateParagraphStyle(
       500.0, NSTextAlignmentCenter, NSLineBreakByWordWrapping);
   ApplyAttributesForRange(NSMakeRange(22, 5));  // "LARGE"
   CGRect bounds = CGRectMake(0, 0, 500, 20.0);
   FrameTextInBounds(bounds);
   CheckForLineCountAndFramedRange(1, NSMakeRange(0, 22));
 }

 // Tests a preexisting error condition in which a BiDi string containing Arabic
 // is correctly laid out (crbug.com/584549).
 TEST_F(ManualTextFramerTest, RTLTest) {
   SetText(@"\u0642\u062F\u0020\u064A\u0633\u062A\u062E\u062F\u0645\u0020\u0047"
            "\u006F\u006F\u0067\u006C\u0065\u0020\u0043\u0068\u0072\u006F\u006D"
            "\u0065\u0020\u062E\u062F\u0645\u0627\u062A\u0020\u0627\u0644\u0648"
            "\u064A\u0628\u0020\u0644\u062A\u062D\u0633\u064A\u0646\u0020\u062A"
            "\u062C\u0631\u0628\u0629\u0020\u0627\u0644\u062A\u0635\u0641\u062D"
            "\u002E\u0020\u0648\u064A\u0645\u0643\u0646\u0643\u0020\u0628\u0634"
            "\u0643\u0644\u0020\u0627\u062E\u062A\u064A\u0627\u0631\u064A\u0020"
            "\u062A\u0639\u0637\u064A\u0644\u0020\u0647\u0630\u0647\u0020\u0627"
            "\u0644\u062E\u062F\u0645\u0627\u062A\u002E");
   attributes()[NSFontAttributeName] = [UIFont systemFontOfSize:20.0];
   ApplyAttributesForRange(text_range());
   CGRect bounds = CGRectMake(0, 0, 500, 100);
   FrameTextInBounds(bounds);
   CheckForLineCountAndFramedRange(2, text_range());
 }

 }  // namespace
	// Copyright 2015 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 "ios/chrome/browser/ui/util/manual_text_framer.h"

	#include "base/mac/foundation_util.h"
	#include "base/time/time.h"
	#import "ios/chrome/browser/ui/util/core_text_util.h"
	#import "ios/chrome/browser/ui/util/text_frame.h"
	#import "ios/third_party/material_roboto_font_loader_ios/src/src/MaterialRobotoFontLoader.h"
	#include "testing/gtest/include/gtest/gtest.h"
	#include "testing/gtest_mac.h"
	#include "testing/platform_test.h"
	#include "url/gurl.h"

	#if !defined(__has_feature) \|\| !__has_feature(objc_arc)
	#error "This file requires ARC support."
	#endif

	namespace {
	// Copy of ManualTextFramer's alignment function.
	enum class AlignmentFunction : short { CEIL = 0, FLOOR };
	CGFloat AlignValueToPixel(CGFloat value, AlignmentFunction function) {
	static CGFloat scale = [[UIScreen mainScreen] scale];
	return function == AlignmentFunction::CEIL ? ceil(value * scale) / scale
	: floor(value * scale) / scale;
	}

	class ManualTextFramerTest : public PlatformTest {
	protected:
	ManualTextFramerTest() {
	attributes_ = [[NSMutableDictionary alloc] init];
	string_ = [[NSMutableAttributedString alloc] init];
	}

	NSString* text() { return [string_ string]; }
	NSRange text_range() { return NSMakeRange(0, [string_ length]); }
	id<TextFrame> text_frame() { return static_cast<id<TextFrame>>(text_frame_); }

	void SetText(NSString* text) {
	DCHECK(text.length);
	[[string_ mutableString] setString:text];
	}

	void FrameTextInBounds(CGRect bounds) {
	ManualTextFramer* manual_framer =
	[[ManualTextFramer alloc] initWithString:string_ inBounds:bounds];
	[manual_framer frameText];
	id frame = [manual_framer textFrame];
	text_frame_ = frame;
	}

	UIFont* RobotoFontWithSize(CGFloat size) {
	return [[MDFRobotoFontLoader sharedInstance] regularFontOfSize:size];
	}

	NSParagraphStyle* CreateParagraphStyle(CGFloat line_height,
	NSTextAlignment alignment,
	NSLineBreakMode line_break_mode) {
	NSMutableParagraphStyle* style = [[NSMutableParagraphStyle alloc] init];
	style.alignment = alignment;
	style.lineBreakMode = line_break_mode;
	style.minimumLineHeight = line_height;
	style.maximumLineHeight = line_height;
	return style;
	}

	NSMutableDictionary* attributes() { return attributes_; }

	void ApplyAttributesForRange(NSRange range) {
	[string_ setAttributes:attributes_ range:range];
	}

	void CheckForLineCountAndFramedRange(NSUInteger line_count,
	NSRange framed_range) {
	EXPECT_EQ(line_count, text_frame().lines.count);
	EXPECT_EQ(framed_range.location, text_frame().framedRange.location);
	EXPECT_EQ(framed_range.length, text_frame().framedRange.length);
	}

	NSMutableDictionary* attributes_;
	NSMutableAttributedString* string_;
	id<TextFrame> text_frame_;
	};

	// Tests that newline characters cause an attributed string to be laid out on
	// multiple lines.
	TEST_F(ManualTextFramerTest, NewlineTest) {
	SetText(@"line one\nline two\nline three");
	attributes()[NSFontAttributeName] = RobotoFontWithSize(14.0);
	attributes()[NSParagraphStyleAttributeName] = CreateParagraphStyle(
	20.0, NSTextAlignmentNatural, NSLineBreakByWordWrapping);
	ApplyAttributesForRange(text_range());
	CGRect bounds = CGRectMake(0, 0, 500, 500);
	FrameTextInBounds(bounds);
	CheckForLineCountAndFramedRange(3, text_range());
	}

	// Tests that strings with no spaces fail correctly.
	TEST_F(ManualTextFramerTest, NoSpacesText) {
	// "St. Mary's church in the hollow of the white hazel near the the rapid
	// whirlpool of Llantysilio of the red cave."
	SetText(
	@"Llanfairpwllgwyngyllgogerychwyrndrobwllllantysiliogogogoch");
	attributes()[NSFontAttributeName] = RobotoFontWithSize(16.0);
	attributes()[NSParagraphStyleAttributeName] = CreateParagraphStyle(
	20.0, NSTextAlignmentNatural, NSLineBreakByWordWrapping);
	ApplyAttributesForRange(text_range());
	CGRect bounds = CGRectMake(0, 0, 200, 60);
	FrameTextInBounds(bounds);
	CheckForLineCountAndFramedRange(0, NSMakeRange(0, 0));
	}

	// Tests that multiple newlines are accounted for. Only the first three
	// newlines should be added to \|lines_\|.
	TEST_F(ManualTextFramerTest, MultipleNewlineTest) {
	SetText(@"\n\n\ntext");
	attributes()[NSParagraphStyleAttributeName] = CreateParagraphStyle(
	20.0, NSTextAlignmentNatural, NSLineBreakByWordWrapping);
	ApplyAttributesForRange(text_range());
	CGRect bounds = CGRectMake(0, 0, 500, 60);
	FrameTextInBounds(bounds);
	CheckForLineCountAndFramedRange(3, NSMakeRange(0, 3));
	}

	// Tests that the framed range for text that will be rendered with ligatures is
	// corresponds with the actual range of the text.
	TEST_F(ManualTextFramerTest, LigatureTest) {
	SetText(@"fffi");
	attributes()[NSFontAttributeName] = RobotoFontWithSize(14.0);
	attributes()[NSParagraphStyleAttributeName] = CreateParagraphStyle(
	20.0, NSTextAlignmentNatural, NSLineBreakByWordWrapping);
	ApplyAttributesForRange(text_range());
	CGRect bounds = CGRectMake(0, 0, 500, 20);
	FrameTextInBounds(bounds);
	CheckForLineCountAndFramedRange(1, text_range());
	}

	// Tests that ManualTextFramer correctly frames Å
	TEST_F(ManualTextFramerTest, DiacriticTest) {
	SetText(@"A\u030A");
	attributes()[NSFontAttributeName] = RobotoFontWithSize(14.0);
	attributes()[NSParagraphStyleAttributeName] = CreateParagraphStyle(
	20.0, NSTextAlignmentNatural, NSLineBreakByWordWrapping);
	ApplyAttributesForRange(text_range());
	CGRect bounds = CGRectMake(0, 0, 500, 20);
	FrameTextInBounds(bounds);
	CheckForLineCountAndFramedRange(1, text_range());
	}

	// String text, attributes, and bounds are chosen to match the "Terms of
	// Service" text in WelcomeToChromeView, as the text is not properly framed by
	// CTFrameSetter. http://crbug.com/537212
	TEST_F(ManualTextFramerTest, TOSTextTest) {
	CGRect bounds = CGRectMake(0, 0, 300.0, 40.0);
	NSString* const kTOSLinkText = @"Terms of Service";
	NSString* const kTOSText =
	@"By using this application, you agree to Chrome’s Terms of Service.";
	SetText(kTOSText);
	attributes()[NSFontAttributeName] = RobotoFontWithSize(14.0);
	attributes()[NSParagraphStyleAttributeName] = CreateParagraphStyle(
	20.0, NSTextAlignmentCenter, NSLineBreakByTruncatingTail);
	attributes()[NSForegroundColorAttributeName] = [UIColor blackColor];
	ApplyAttributesForRange(text_range());
	attributes()[NSForegroundColorAttributeName] = [UIColor blueColor];
	ApplyAttributesForRange([kTOSText rangeOfString:kTOSLinkText]);
	FrameTextInBounds(bounds);
	CheckForLineCountAndFramedRange(2, text_range());
	}

	// Tests that the origin of a left-aligned single line is correct.
	TEST_F(ManualTextFramerTest, SimpleOriginTest) {
	SetText(@"test");
	UIFont* font = RobotoFontWithSize(14.0);
	attributes()[NSFontAttributeName] = font;
	CGFloat line_height = 20.0;
	attributes()[NSParagraphStyleAttributeName] = CreateParagraphStyle(
	line_height, NSTextAlignmentLeft, NSLineBreakByWordWrapping);
	ApplyAttributesForRange(text_range());
	CGRect bounds = CGRectMake(0, 0, 500, 21);
	FrameTextInBounds(bounds);
	CheckForLineCountAndFramedRange(1, text_range());
	FramedLine* line = [text_frame().lines firstObject];
	EXPECT_EQ(0, line.origin.x);
	EXPECT_EQ(
	AlignValueToPixel(CGRectGetHeight(bounds) - line_height - font.descender,
	AlignmentFunction::FLOOR),
	line.origin.y);
	}

	// Tests that lines that are laid out in RTL are right aligned.
	TEST_F(ManualTextFramerTest, OriginRTLTest) {
	SetText(@"\u0641\u064e\u0628\u064e\u0642\u064e\u064a\u0652\u062a\u064f\u0020"
	@"\u0645\u064f\u062a\u064e\u0627\u0628\u0650\u0639\u064e\u0627\u064b"
	@"\u0020\u0028\u0634\u064f\u063a\u0652\u0644\u0650\u064a\u0029\u0020"
	@"\u0644\u064e\u0639\u064e\u0644\u064e\u0643\u0650\u0020\u062a\u064e"
	@"\u062a\u064e\u0639\u064e\u0644\u0651\u064e\u0645\u064e\u0020\u0627"
	@"\u0644\u062d\u0650\u0631\u0652\u0635\u064e\u0020\u0639\u064e\u0644"
	@"\u064e\u0649\u0020\u0627\u0644\u0648\u064e\u0642\u0652\u062a\u0650"
	@"\u0020\u002e\u0020\u0641\u064e\u0627\u0644\u062d\u064e\u064a\u064e"
	@"\u0627\u0629\u064f");
	attributes()[NSFontAttributeName] = RobotoFontWithSize(14.0);
	attributes()[NSParagraphStyleAttributeName] = CreateParagraphStyle(
	20.0, NSTextAlignmentNatural, NSLineBreakByWordWrapping);
	ApplyAttributesForRange(text_range());
	CGRect bounds = CGRectMake(0, 0, 100.0, 60.0);
	FrameTextInBounds(bounds);
	CheckForLineCountAndFramedRange(3, text_range());
	for (FramedLine* line in text_frame().lines) {
	CGFloat line_width =
	AlignValueToPixel(core_text_util::GetTrimmedLineWidth(line.line),
	AlignmentFunction::CEIL);
	EXPECT_EQ(CGRectGetMaxX(bounds), line.origin.x + line_width);
	}
	}

	TEST_F(ManualTextFramerTest, CJKLineBreakTest) {
	// Example from our strings. Framer will put “触摸搜索” on one line, and then
	// fail to frame the second.
	// clang-format off
	SetText(@"“触摸搜索”会将所选字词和当前页面（作为上下文）一起发送给 Google 搜索。"
	@"您可以在设置中停用此功能。");
	// clang-format on
	attributes()[NSFontAttributeName] = RobotoFontWithSize(16.0);
	attributes()[NSParagraphStyleAttributeName] = CreateParagraphStyle(
	16 * 1.15, NSTextAlignmentNatural, NSLineBreakByWordWrapping);
	ApplyAttributesForRange(text_range());
	CGRect bounds = CGRectMake(0, 0, 300.0, 65.0);
	FrameTextInBounds(bounds);
	CheckForLineCountAndFramedRange(3, NSMakeRange(0, 53));

	// Example without any space-ish characters:
	// clang-format off
	SetText(@"会将所选字词和当前页面（作为上下文）一起发送给Google搜索。"
	@"您可以在设置中停用此功能。");
	// clang-format on
	attributes()[NSFontAttributeName] = RobotoFontWithSize(16.0);
	attributes()[NSParagraphStyleAttributeName] = CreateParagraphStyle(
	16 * 1.15, NSTextAlignmentNatural, NSLineBreakByWordWrapping);
	ApplyAttributesForRange(text_range());
	FrameTextInBounds(bounds);
	CheckForLineCountAndFramedRange(2, NSMakeRange(0, 45));
	}

	// Tests that paragraphs with NSTextAlignmentCenter are actually centered.
	TEST_F(ManualTextFramerTest, CenterAlignedTest) {
	SetText(@"xxxx\nyyy\nwww");
	attributes()[NSFontAttributeName] = RobotoFontWithSize(14.0);
	attributes()[NSParagraphStyleAttributeName] = CreateParagraphStyle(
	20.0, NSTextAlignmentCenter, NSLineBreakByWordWrapping);
	ApplyAttributesForRange(text_range());
	CGRect bounds = CGRectMake(0, 0, 200.0, 60.0);
	FrameTextInBounds(bounds);
	CheckForLineCountAndFramedRange(3, text_range());
	for (FramedLine* line in text_frame().lines) {
	CGFloat line_width =
	AlignValueToPixel(core_text_util::GetTrimmedLineWidth(line.line),
	AlignmentFunction::CEIL);
	EXPECT_EQ(AlignValueToPixel(CGRectGetMidX(bounds) - 0.5 * line_width,
	AlignmentFunction::FLOOR),
	line.origin.x);
	}
	}

	// Tests that words with a large line height will not be framed if they don't
	// fit in the bounding height.
	TEST_F(ManualTextFramerTest, LargeLineHeightTest) {
	SetText(@"the last word is very LARGE");
	attributes()[NSFontAttributeName] = RobotoFontWithSize(14.0);
	attributes()[NSParagraphStyleAttributeName] = CreateParagraphStyle(
	20.0, NSTextAlignmentCenter, NSLineBreakByWordWrapping);
	ApplyAttributesForRange(text_range());
	attributes()[NSParagraphStyleAttributeName] = CreateParagraphStyle(
	500.0, NSTextAlignmentCenter, NSLineBreakByWordWrapping);
	ApplyAttributesForRange(NSMakeRange(22, 5)); // "LARGE"
	CGRect bounds = CGRectMake(0, 0, 500, 20.0);
	FrameTextInBounds(bounds);
	CheckForLineCountAndFramedRange(1, NSMakeRange(0, 22));
	}

	// Tests a preexisting error condition in which a BiDi string containing Arabic
	// is correctly laid out (crbug.com/584549).
	TEST_F(ManualTextFramerTest, RTLTest) {
	SetText(@"\u0642\u062F\u0020\u064A\u0633\u062A\u062E\u062F\u0645\u0020\u0047"
	"\u006F\u006F\u0067\u006C\u0065\u0020\u0043\u0068\u0072\u006F\u006D"
	"\u0065\u0020\u062E\u062F\u0645\u0627\u062A\u0020\u0627\u0644\u0648"
	"\u064A\u0628\u0020\u0644\u062A\u062D\u0633\u064A\u0646\u0020\u062A"
	"\u062C\u0631\u0628\u0629\u0020\u0627\u0644\u062A\u0635\u0641\u062D"
	"\u002E\u0020\u0648\u064A\u0645\u0643\u0646\u0643\u0020\u0628\u0634"
	"\u0643\u0644\u0020\u0627\u062E\u062A\u064A\u0627\u0631\u064A\u0020"
	"\u062A\u0639\u0637\u064A\u0644\u0020\u0647\u0630\u0647\u0020\u0627"
	"\u0644\u062E\u062F\u0645\u0627\u062A\u002E");
	attributes()[NSFontAttributeName] = [UIFont systemFontOfSize:20.0];
	ApplyAttributesForRange(text_range());
	CGRect bounds = CGRectMake(0, 0, 500, 100);
	FrameTextInBounds(bounds);
	CheckForLineCountAndFramedRange(2, text_range());
	}

	} // namespace