packages/flutter/test/cupertino/text_field_test.dart - mirrors/flutter - Git at Google

 // Copyright 2018 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.

 import 'dart:async';

 import 'package:flutter/cupertino.dart';
 import 'package:flutter/rendering.dart';
 import 'package:flutter/services.dart';
 import 'package:flutter_test/flutter_test.dart';

 class MockClipboard {
   Object _clipboardData = <String, dynamic>{
     'text': null,
   };

   Future<dynamic> handleMethodCall(MethodCall methodCall) async {
     switch (methodCall.method) {
       case 'Clipboard.getData':
         return _clipboardData;
       case 'Clipboard.setData':
         _clipboardData = methodCall.arguments;
         break;
     }
   }
 }

 void main() {
   final MockClipboard mockClipboard = MockClipboard();
   SystemChannels.platform.setMockMethodCallHandler(mockClipboard.handleMethodCall);

   testWidgets(
     'takes available space horizontally and takes intrinsic space vertically',
     (WidgetTester tester) async {
       await tester.pumpWidget(
         CupertinoApp(
           home: Center(
             child: ConstrainedBox(
               constraints: BoxConstraints.loose(const Size(200, 200)),
               child: const CupertinoTextField(),
             ),
           ),
         ),
       );

       expect(
         tester.getSize(find.byType(CupertinoTextField)),
         const Size(200, 29), // 29 is the height of the default font + padding etc.
       );
     },
   );

   testWidgets(
     'multi-lined text fields are intrinsically taller',
     (WidgetTester tester) async {
       await tester.pumpWidget(
         CupertinoApp(
           home: Center(
             child: ConstrainedBox(
               constraints: BoxConstraints.loose(const Size(200, 200)),
               child: const CupertinoTextField(maxLines: 3),
             ),
           ),
         ),
       );

       expect(
         tester.getSize(find.byType(CupertinoTextField)),
         const Size(200, 63),
       );
     },
   );

   testWidgets(
     'default text field has a border',
     (WidgetTester tester) async {
       await tester.pumpWidget(
         const CupertinoApp(
           home: Center(
             child: CupertinoTextField(),
           ),
         ),
       );

       final BoxDecoration decoration = tester.widget<DecoratedBox>(
         find.descendant(
           of: find.byType(CupertinoTextField),
           matching: find.byType(DecoratedBox)
         ),
       ).decoration;

       expect(
         decoration.borderRadius,
         BorderRadius.circular(4.0),
       );
       expect(
         decoration.border.bottom.color,
         CupertinoColors.lightBackgroundGray,
       );
     },
   );

   testWidgets(
     'decoration can be overrriden',
     (WidgetTester tester) async {
       await tester.pumpWidget(
         const CupertinoApp(
           home: Center(
             child: CupertinoTextField(
               decoration: null,
             ),
           ),
         ),
       );

       expect(
         find.descendant(
           of: find.byType(CupertinoTextField),
           matching: find.byType(DecoratedBox)
         ),
         findsNothing,
       );
     },
   );

   testWidgets(
     'text entries are padded by default',
     (WidgetTester tester) async {
       await tester.pumpWidget(
         CupertinoApp(
           home: Center(
             child: CupertinoTextField(
               controller: TextEditingController(text: 'initial'),
             ),
           ),
         ),
       );

       expect(
         tester.getTopLeft(find.text('initial')) - tester.getTopLeft(find.byType(CupertinoTextField)),
         const Offset(6.0, 6.0),
       );
     },
   );

   testWidgets(
     'can control text content via controller',
     (WidgetTester tester) async {
       final TextEditingController controller = TextEditingController();

       await tester.pumpWidget(
         CupertinoApp(
           home: Center(
             child: CupertinoTextField(
               controller: controller,
             ),
           ),
         ),
       );

       controller.text = 'controller text';
       await tester.pump();

       expect(find.text('controller text'), findsOneWidget);

       controller.text = '';
       await tester.pump();

       expect(find.text('controller text'), findsNothing);
     },
   );

   testWidgets(
     'placeholders are lightly colored and disappears once typing starts',
     (WidgetTester tester) async {
       await tester.pumpWidget(
         const CupertinoApp(
           home: Center(
             child: CupertinoTextField(
               placeholder: 'placeholder',
             ),
           ),
         ),
       );

       final Text placeholder = tester.widget(find.text('placeholder'));
       expect(placeholder.style.color, const Color(0xFFC2C2C2));

       await tester.enterText(find.byType(CupertinoTextField), 'input');
       await tester.pump();
       expect(find.text('placeholder'), findsNothing);
     },
   );

   testWidgets(
     'prefix widget is in front of the text',
     (WidgetTester tester) async {
       await tester.pumpWidget(
         CupertinoApp(
           home: Center(
             child: CupertinoTextField(
               prefix: const Icon(CupertinoIcons.add),
               controller: TextEditingController(text: 'input'),
             ),
           ),
         ),
       );

       expect(
         tester.getTopRight(find.byIcon(CupertinoIcons.add)).dx + 6.0, // 6px standard padding around input.
         tester.getTopLeft(find.byType(EditableText)).dx,
       );

       expect(
         tester.getTopLeft(find.byType(EditableText)).dx,
         tester.getTopLeft(find.byType(CupertinoTextField)).dx
             + tester.getSize(find.byIcon(CupertinoIcons.add)).width
             + 6.0,
       );
     },
   );

   testWidgets(
     'prefix widget respects visibility mode',
     (WidgetTester tester) async {
       await tester.pumpWidget(
         const CupertinoApp(
           home: Center(
             child: CupertinoTextField(
               prefix: Icon(CupertinoIcons.add),
               prefixMode: OverlayVisibilityMode.editing,
             ),
           ),
         ),
       );

       expect(find.byIcon(CupertinoIcons.add), findsNothing);
       // The position should just be the edge of the whole text field plus padding.
       expect(
         tester.getTopLeft(find.byType(EditableText)).dx,
         tester.getTopLeft(find.byType(CupertinoTextField)).dx + 6.0,
       );

       await tester.enterText(find.byType(CupertinoTextField), 'text input');
       await tester.pump();

       expect(find.text('text input'), findsOneWidget);
       expect(find.byIcon(CupertinoIcons.add), findsOneWidget);

       // Text is now moved to the right.
       expect(
         tester.getTopLeft(find.byType(EditableText)).dx,
         tester.getTopLeft(find.byType(CupertinoTextField)).dx
             + tester.getSize(find.byIcon(CupertinoIcons.add)).width
             + 6.0,
       );
     },
   );

   testWidgets(
     'suffix widget is after the text',
     (WidgetTester tester) async {
       await tester.pumpWidget(
         const CupertinoApp(
           home: Center(
             child: CupertinoTextField(
               suffix: Icon(CupertinoIcons.add),
             ),
           ),
         ),
       );

       expect(
         tester.getTopRight(find.byType(EditableText)).dx + 6.0,
         tester.getTopLeft(find.byIcon(CupertinoIcons.add)).dx, // 6px standard padding around input.
       );

       expect(
         tester.getTopRight(find.byType(EditableText)).dx,
         tester.getTopRight(find.byType(CupertinoTextField)).dx
             - tester.getSize(find.byIcon(CupertinoIcons.add)).width
             - 6.0,
       );
     },
   );

   testWidgets(
     'suffix widget respects visibility mode',
     (WidgetTester tester) async {
       await tester.pumpWidget(
         const CupertinoApp(
           home: Center(
             child: CupertinoTextField(
               suffix: Icon(CupertinoIcons.add),
               suffixMode: OverlayVisibilityMode.notEditing,
             ),
           ),
         ),
       );

       expect(find.byIcon(CupertinoIcons.add), findsOneWidget);

       await tester.enterText(find.byType(CupertinoTextField), 'text input');
       await tester.pump();

       expect(find.text('text input'), findsOneWidget);
       expect(find.byIcon(CupertinoIcons.add), findsNothing);
     },
   );

   testWidgets(
     'can customize padding',
     (WidgetTester tester) async {
       await tester.pumpWidget(
         const CupertinoApp(
           home: Center(
             child: CupertinoTextField(
               padding: EdgeInsets.zero,
             ),
           ),
         ),
       );

       expect(
         tester.getSize(find.byType(EditableText)),
         tester.getSize(find.byType(CupertinoTextField)),
       );
     },
   );

   testWidgets(
     'padding is in between prefix and suffix',
     (WidgetTester tester) async {
       await tester.pumpWidget(
         const CupertinoApp(
           home: Center(
             child: CupertinoTextField(
               padding: EdgeInsets.all(20.0),
               prefix: SizedBox(height: 100.0, width: 100.0),
               suffix: SizedBox(height: 50.0, width: 50.0),
             ),
           ),
         ),
       );

       expect(
         tester.getTopLeft(find.byType(EditableText)).dx,
         // Size of prefix + padding.
         100.0 + 20.0,
       );

       expect(tester.getTopLeft(find.byType(EditableText)).dy, 291.5);

       expect(
         tester.getTopRight(find.byType(EditableText)).dx,
         800.0 - 50.0 - 20.0,
       );

       await tester.pumpWidget(
         const CupertinoApp(
           home: Center(
             child: CupertinoTextField(
               padding: EdgeInsets.all(30.0),
               prefix: SizedBox(height: 100.0, width: 100.0),
               suffix: SizedBox(height: 50.0, width: 50.0),
             ),
           ),
         ),
       );

       expect(
         tester.getTopLeft(find.byType(EditableText)).dx,
         100.0 + 30.0,
       );

       // Since the highest component, the prefix box, is higher than
       // the text + paddings, the text's vertical position isn't affected.
       expect(tester.getTopLeft(find.byType(EditableText)).dy, 291.5);

       expect(
         tester.getTopRight(find.byType(EditableText)).dx,
         800.0 - 50.0 - 30.0,
       );
     },
   );

   testWidgets(
     'clear button shows with right visibility mode',
     (WidgetTester tester) async {
       final TextEditingController controller = TextEditingController();
       await tester.pumpWidget(
         CupertinoApp(
           home: Center(
             child: CupertinoTextField(
               controller: controller,
               placeholder: 'placeholder does not affect clear button',
               clearButtonMode: OverlayVisibilityMode.always,
             ),
           ),
         ),
       );

       expect(find.byIcon(CupertinoIcons.clear_thick_circled), findsOneWidget);

       expect(
         tester.getTopRight(find.byType(EditableText)).dx,
         800.0 - 30.0  /* size of button */ - 6.0 /* padding */,
       );

       await tester.pumpWidget(
         CupertinoApp(
           home: Center(
             child: CupertinoTextField(
               controller: controller,
               placeholder: 'placeholder does not affect clear button',
               clearButtonMode: OverlayVisibilityMode.editing,
             ),
           ),
         ),
       );

       expect(find.byIcon(CupertinoIcons.clear_thick_circled), findsNothing);
       expect(
         tester.getTopRight(find.byType(EditableText)).dx,
         800.0 - 6.0 /* padding */,
       );

       await tester.enterText(find.byType(CupertinoTextField), 'text input');
       await tester.pump();

       expect(find.byIcon(CupertinoIcons.clear_thick_circled), findsOneWidget);
       expect(find.text('text input'), findsOneWidget);
       expect(
         tester.getTopRight(find.byType(EditableText)).dx,
         800.0 - 30.0 - 6.0,
       );

       await tester.pumpWidget(
         CupertinoApp(
           home: Center(
             child: CupertinoTextField(
               controller: controller,
               placeholder: 'placeholder does not affect clear button',
               clearButtonMode: OverlayVisibilityMode.notEditing,
             ),
           ),
         ),
       );
       expect(find.byIcon(CupertinoIcons.clear_thick_circled), findsNothing);

       controller.text = '';
       await tester.pump();

       expect(find.byIcon(CupertinoIcons.clear_thick_circled), findsOneWidget);
     },
   );

   testWidgets(
     'clear button removes text',
     (WidgetTester tester) async {
       final TextEditingController controller = TextEditingController();
       await tester.pumpWidget(
         CupertinoApp(
           home: Center(
             child: CupertinoTextField(
               controller: controller,
               placeholder: 'placeholder',
               clearButtonMode: OverlayVisibilityMode.editing,
             ),
           ),
         ),
       );

       controller.text = 'text entry';
       await tester.pump();

       await tester.tap(find.byIcon(CupertinoIcons.clear_thick_circled));
       await tester.pump();

       expect(controller.text, '');
       expect(find.text('placeholder'), findsOneWidget);
       expect(find.text('text entry'), findsNothing);
       expect(find.byIcon(CupertinoIcons.clear_thick_circled), findsNothing);
     },
   );

   testWidgets(
     'clear button yields precedence to suffix',
     (WidgetTester tester) async {
       final TextEditingController controller = TextEditingController();
       await tester.pumpWidget(
         CupertinoApp(
           home: Center(
             child: CupertinoTextField(
               controller: controller,
               clearButtonMode: OverlayVisibilityMode.always,
               suffix: const Icon(CupertinoIcons.add_circled_solid),
               suffixMode: OverlayVisibilityMode.editing,
             ),
           ),
         ),
       );

       expect(find.byIcon(CupertinoIcons.clear_thick_circled), findsOneWidget);
       expect(find.byIcon(CupertinoIcons.add_circled_solid), findsNothing);

       expect(
         tester.getTopRight(find.byType(EditableText)).dx,
         800.0 - 30.0  /* size of button */ - 6.0 /* padding */,
       );

       controller.text = 'non empty text';
       await tester.pump();

       expect(find.byIcon(CupertinoIcons.clear_thick_circled), findsNothing);
       expect(find.byIcon(CupertinoIcons.add_circled_solid), findsOneWidget);

       // Still just takes the space of one widget.
       expect(
         tester.getTopRight(find.byType(EditableText)).dx,
         800.0 - 24.0  /* size of button */ - 6.0 /* padding */,
       );
     },
   );

   testWidgets(
     'font style controls intrinsic height',
     (WidgetTester tester) async {
       await tester.pumpWidget(
         const CupertinoApp(
           home: Center(
             child: CupertinoTextField(),
           ),
         ),
       );

       expect(
         tester.getSize(find.byType(CupertinoTextField)).height,
         29.0,
       );

       await tester.pumpWidget(
         const CupertinoApp(
           home: Center(
             child: CupertinoTextField(
               style: TextStyle(
                 // A larger font.
                 fontSize: 50.0,
               ),
             ),
           ),
         ),
       );

       expect(
         tester.getSize(find.byType(CupertinoTextField)).height,
         62.0,
       );
     },
   );

   testWidgets(
     'RTL puts attachments to the right places',
     (WidgetTester tester) async {
       await tester.pumpWidget(
         const CupertinoApp(
           home: Directionality(
             textDirection: TextDirection.rtl,
             child: Center(
               child: CupertinoTextField(
                 padding: EdgeInsets.all(20.0),
                 prefix: Icon(CupertinoIcons.book),
                 clearButtonMode: OverlayVisibilityMode.always,
               ),
             ),
           ),
         ),
       );

       expect(
         tester.getTopLeft(find.byIcon(CupertinoIcons.book)).dx,
         800.0 - 24.0,
       );

       expect(
         tester.getTopRight(find.byIcon(CupertinoIcons.clear_thick_circled)).dx,
         24.0,
       );
     },
   );

   testWidgets(
     'text fields with no max lines can grow',
     (WidgetTester tester) async {
       await tester.pumpWidget(
         const CupertinoApp(
           home: Center(
             child: CupertinoTextField(
               maxLines: null,
             ),
           ),
         ),
       );

       expect(
         tester.getSize(find.byType(CupertinoTextField)).height,
         29.0, // Initially one line high.
       );

       await tester.enterText(find.byType(CupertinoTextField), '\n');
       await tester.pump();

       expect(
         tester.getSize(find.byType(CupertinoTextField)).height,
         46.0, // Initially one line high.
       );
     },
   );

   testWidgets('cannot enter new lines onto single line TextField', (WidgetTester tester) async {
     final TextEditingController controller = TextEditingController();

     await tester.pumpWidget(
       CupertinoApp(
         home: Center(
           child: CupertinoTextField(
             controller: controller,
           ),
         ),
       ),
     );

     await tester.enterText(find.byType(CupertinoTextField), 'abc\ndef');

     expect(controller.text, 'abcdef');
   });

   testWidgets('copy paste', (WidgetTester tester) async {
     await tester.pumpWidget(
       CupertinoApp(
         home: Column(
           children: const <Widget>[
             CupertinoTextField(
               placeholder: 'field 1',
             ),
             CupertinoTextField(
               placeholder: 'field 2',
             ),
           ],
         ),
       ),
     );

     await tester.enterText(
       find.widgetWithText(CupertinoTextField, 'field 1'),
       "j'aime la poutine"
     );
     await tester.pump();

     // Tap an area inside the EditableText but with no text.
     await tester.longPressAt(
       tester.getTopRight(find.text("j'aime la poutine"))
     );
     await tester.pump();
     await tester.pump(const Duration(milliseconds: 200));

     await tester.tap(find.text('Select All'));
     await tester.pump();

     await tester.tap(find.text('Cut'));
     await tester.pump();

     // Placeholder 1 is back since the text is cut.
     expect(find.text('field 1'), findsOneWidget);
     expect(find.text('field 2'), findsOneWidget);

     await tester.longPress(find.text('field 2'));
     await tester.pump();
     await tester.pump(const Duration(milliseconds: 200));

     await tester.tap(find.text('Paste'));
     await tester.pump();

     expect(find.text('field 1'), findsOneWidget);
     expect(find.text("j'aime la poutine"), findsOneWidget);
     expect(find.text('field 2'), findsNothing);
   });
 }
	// Copyright 2018 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.

	import 'dart:async';

	import 'package:flutter/cupertino.dart';
	import 'package:flutter/rendering.dart';
	import 'package:flutter/services.dart';
	import 'package:flutter_test/flutter_test.dart';

	class MockClipboard {
	Object _clipboardData = <String, dynamic>{
	'text': null,
	};

	Future<dynamic> handleMethodCall(MethodCall methodCall) async {
	switch (methodCall.method) {
	case 'Clipboard.getData':
	return _clipboardData;
	case 'Clipboard.setData':
	_clipboardData = methodCall.arguments;
	break;
	}
	}
	}

	void main() {
	final MockClipboard mockClipboard = MockClipboard();
	SystemChannels.platform.setMockMethodCallHandler(mockClipboard.handleMethodCall);

	testWidgets(
	'takes available space horizontally and takes intrinsic space vertically',
	(WidgetTester tester) async {
	await tester.pumpWidget(
	CupertinoApp(
	home: Center(
	child: ConstrainedBox(
	constraints: BoxConstraints.loose(const Size(200, 200)),
	child: const CupertinoTextField(),
	),
	),
	),
	);

	expect(
	tester.getSize(find.byType(CupertinoTextField)),
	const Size(200, 29), // 29 is the height of the default font + padding etc.
	);
	},
	);

	testWidgets(
	'multi-lined text fields are intrinsically taller',
	(WidgetTester tester) async {
	await tester.pumpWidget(
	CupertinoApp(
	home: Center(
	child: ConstrainedBox(
	constraints: BoxConstraints.loose(const Size(200, 200)),
	child: const CupertinoTextField(maxLines: 3),
	),
	),
	),
	);

	expect(
	tester.getSize(find.byType(CupertinoTextField)),
	const Size(200, 63),
	);
	},
	);

	testWidgets(
	'default text field has a border',
	(WidgetTester tester) async {
	await tester.pumpWidget(
	const CupertinoApp(
	home: Center(
	child: CupertinoTextField(),
	),
	),
	);

	final BoxDecoration decoration = tester.widget<DecoratedBox>(
	find.descendant(
	of: find.byType(CupertinoTextField),
	matching: find.byType(DecoratedBox)
	),
	).decoration;

	expect(
	decoration.borderRadius,
	BorderRadius.circular(4.0),
	);
	expect(
	decoration.border.bottom.color,
	CupertinoColors.lightBackgroundGray,
	);
	},
	);

	testWidgets(
	'decoration can be overrriden',
	(WidgetTester tester) async {
	await tester.pumpWidget(
	const CupertinoApp(
	home: Center(
	child: CupertinoTextField(
	decoration: null,
	),
	),
	),
	);

	expect(
	find.descendant(
	of: find.byType(CupertinoTextField),
	matching: find.byType(DecoratedBox)
	),
	findsNothing,
	);
	},
	);

	testWidgets(
	'text entries are padded by default',
	(WidgetTester tester) async {
	await tester.pumpWidget(
	CupertinoApp(
	home: Center(
	child: CupertinoTextField(
	controller: TextEditingController(text: 'initial'),
	),
	),
	),
	);

	expect(
	tester.getTopLeft(find.text('initial')) - tester.getTopLeft(find.byType(CupertinoTextField)),
	const Offset(6.0, 6.0),
	);
	},
	);

	testWidgets(
	'can control text content via controller',
	(WidgetTester tester) async {
	final TextEditingController controller = TextEditingController();

	await tester.pumpWidget(
	CupertinoApp(
	home: Center(
	child: CupertinoTextField(
	controller: controller,
	),
	),
	),
	);

	controller.text = 'controller text';
	await tester.pump();

	expect(find.text('controller text'), findsOneWidget);

	controller.text = '';
	await tester.pump();

	expect(find.text('controller text'), findsNothing);
	},
	);

	testWidgets(
	'placeholders are lightly colored and disappears once typing starts',
	(WidgetTester tester) async {
	await tester.pumpWidget(
	const CupertinoApp(
	home: Center(
	child: CupertinoTextField(
	placeholder: 'placeholder',
	),
	),
	),
	);

	final Text placeholder = tester.widget(find.text('placeholder'));
	expect(placeholder.style.color, const Color(0xFFC2C2C2));

	await tester.enterText(find.byType(CupertinoTextField), 'input');
	await tester.pump();
	expect(find.text('placeholder'), findsNothing);
	},
	);

	testWidgets(
	'prefix widget is in front of the text',
	(WidgetTester tester) async {
	await tester.pumpWidget(
	CupertinoApp(
	home: Center(
	child: CupertinoTextField(
	prefix: const Icon(CupertinoIcons.add),
	controller: TextEditingController(text: 'input'),
	),
	),
	),
	);

	expect(
	tester.getTopRight(find.byIcon(CupertinoIcons.add)).dx + 6.0, // 6px standard padding around input.
	tester.getTopLeft(find.byType(EditableText)).dx,
	);

	expect(
	tester.getTopLeft(find.byType(EditableText)).dx,
	tester.getTopLeft(find.byType(CupertinoTextField)).dx
	+ tester.getSize(find.byIcon(CupertinoIcons.add)).width
	+ 6.0,
	);
	},
	);

	testWidgets(
	'prefix widget respects visibility mode',
	(WidgetTester tester) async {
	await tester.pumpWidget(
	const CupertinoApp(
	home: Center(
	child: CupertinoTextField(
	prefix: Icon(CupertinoIcons.add),
	prefixMode: OverlayVisibilityMode.editing,
	),
	),
	),
	);

	expect(find.byIcon(CupertinoIcons.add), findsNothing);
	// The position should just be the edge of the whole text field plus padding.
	expect(
	tester.getTopLeft(find.byType(EditableText)).dx,
	tester.getTopLeft(find.byType(CupertinoTextField)).dx + 6.0,
	);

	await tester.enterText(find.byType(CupertinoTextField), 'text input');
	await tester.pump();

	expect(find.text('text input'), findsOneWidget);
	expect(find.byIcon(CupertinoIcons.add), findsOneWidget);

	// Text is now moved to the right.
	expect(
	tester.getTopLeft(find.byType(EditableText)).dx,
	tester.getTopLeft(find.byType(CupertinoTextField)).dx
	+ tester.getSize(find.byIcon(CupertinoIcons.add)).width
	+ 6.0,
	);
	},
	);

	testWidgets(
	'suffix widget is after the text',
	(WidgetTester tester) async {
	await tester.pumpWidget(
	const CupertinoApp(
	home: Center(
	child: CupertinoTextField(
	suffix: Icon(CupertinoIcons.add),
	),
	),
	),
	);

	expect(
	tester.getTopRight(find.byType(EditableText)).dx + 6.0,
	tester.getTopLeft(find.byIcon(CupertinoIcons.add)).dx, // 6px standard padding around input.
	);

	expect(
	tester.getTopRight(find.byType(EditableText)).dx,
	tester.getTopRight(find.byType(CupertinoTextField)).dx
	- tester.getSize(find.byIcon(CupertinoIcons.add)).width
	- 6.0,
	);
	},
	);

	testWidgets(
	'suffix widget respects visibility mode',
	(WidgetTester tester) async {
	await tester.pumpWidget(
	const CupertinoApp(
	home: Center(
	child: CupertinoTextField(
	suffix: Icon(CupertinoIcons.add),
	suffixMode: OverlayVisibilityMode.notEditing,
	),
	),
	),
	);

	expect(find.byIcon(CupertinoIcons.add), findsOneWidget);

	await tester.enterText(find.byType(CupertinoTextField), 'text input');
	await tester.pump();

	expect(find.text('text input'), findsOneWidget);
	expect(find.byIcon(CupertinoIcons.add), findsNothing);
	},
	);

	testWidgets(
	'can customize padding',
	(WidgetTester tester) async {
	await tester.pumpWidget(
	const CupertinoApp(
	home: Center(
	child: CupertinoTextField(
	padding: EdgeInsets.zero,
	),
	),
	),
	);

	expect(
	tester.getSize(find.byType(EditableText)),
	tester.getSize(find.byType(CupertinoTextField)),
	);
	},
	);

	testWidgets(
	'padding is in between prefix and suffix',
	(WidgetTester tester) async {
	await tester.pumpWidget(
	const CupertinoApp(
	home: Center(
	child: CupertinoTextField(
	padding: EdgeInsets.all(20.0),
	prefix: SizedBox(height: 100.0, width: 100.0),
	suffix: SizedBox(height: 50.0, width: 50.0),
	),
	),
	),
	);

	expect(
	tester.getTopLeft(find.byType(EditableText)).dx,
	// Size of prefix + padding.
	100.0 + 20.0,
	);

	expect(tester.getTopLeft(find.byType(EditableText)).dy, 291.5);

	expect(
	tester.getTopRight(find.byType(EditableText)).dx,
	800.0 - 50.0 - 20.0,
	);

	await tester.pumpWidget(
	const CupertinoApp(
	home: Center(
	child: CupertinoTextField(
	padding: EdgeInsets.all(30.0),
	prefix: SizedBox(height: 100.0, width: 100.0),
	suffix: SizedBox(height: 50.0, width: 50.0),
	),
	),
	),
	);

	expect(
	tester.getTopLeft(find.byType(EditableText)).dx,
	100.0 + 30.0,
	);

	// Since the highest component, the prefix box, is higher than
	// the text + paddings, the text's vertical position isn't affected.
	expect(tester.getTopLeft(find.byType(EditableText)).dy, 291.5);

	expect(
	tester.getTopRight(find.byType(EditableText)).dx,
	800.0 - 50.0 - 30.0,
	);
	},
	);

	testWidgets(
	'clear button shows with right visibility mode',
	(WidgetTester tester) async {
	final TextEditingController controller = TextEditingController();
	await tester.pumpWidget(
	CupertinoApp(
	home: Center(
	child: CupertinoTextField(
	controller: controller,
	placeholder: 'placeholder does not affect clear button',
	clearButtonMode: OverlayVisibilityMode.always,
	),
	),
	),
	);

	expect(find.byIcon(CupertinoIcons.clear_thick_circled), findsOneWidget);

	expect(
	tester.getTopRight(find.byType(EditableText)).dx,
	800.0 - 30.0 /* size of button / - 6.0 / padding */,
	);

	await tester.pumpWidget(
	CupertinoApp(
	home: Center(
	child: CupertinoTextField(
	controller: controller,
	placeholder: 'placeholder does not affect clear button',
	clearButtonMode: OverlayVisibilityMode.editing,
	),
	),
	),
	);

	expect(find.byIcon(CupertinoIcons.clear_thick_circled), findsNothing);
	expect(
	tester.getTopRight(find.byType(EditableText)).dx,
	800.0 - 6.0 /* padding */,
	);

	await tester.enterText(find.byType(CupertinoTextField), 'text input');
	await tester.pump();

	expect(find.byIcon(CupertinoIcons.clear_thick_circled), findsOneWidget);
	expect(find.text('text input'), findsOneWidget);
	expect(
	tester.getTopRight(find.byType(EditableText)).dx,
	800.0 - 30.0 - 6.0,
	);

	await tester.pumpWidget(
	CupertinoApp(
	home: Center(
	child: CupertinoTextField(
	controller: controller,
	placeholder: 'placeholder does not affect clear button',
	clearButtonMode: OverlayVisibilityMode.notEditing,
	),
	),
	),
	);
	expect(find.byIcon(CupertinoIcons.clear_thick_circled), findsNothing);

	controller.text = '';
	await tester.pump();

	expect(find.byIcon(CupertinoIcons.clear_thick_circled), findsOneWidget);
	},
	);

	testWidgets(
	'clear button removes text',
	(WidgetTester tester) async {
	final TextEditingController controller = TextEditingController();
	await tester.pumpWidget(
	CupertinoApp(
	home: Center(
	child: CupertinoTextField(
	controller: controller,
	placeholder: 'placeholder',
	clearButtonMode: OverlayVisibilityMode.editing,
	),
	),
	),
	);

	controller.text = 'text entry';
	await tester.pump();

	await tester.tap(find.byIcon(CupertinoIcons.clear_thick_circled));
	await tester.pump();

	expect(controller.text, '');
	expect(find.text('placeholder'), findsOneWidget);
	expect(find.text('text entry'), findsNothing);
	expect(find.byIcon(CupertinoIcons.clear_thick_circled), findsNothing);
	},
	);

	testWidgets(
	'clear button yields precedence to suffix',
	(WidgetTester tester) async {
	final TextEditingController controller = TextEditingController();
	await tester.pumpWidget(
	CupertinoApp(
	home: Center(
	child: CupertinoTextField(
	controller: controller,
	clearButtonMode: OverlayVisibilityMode.always,
	suffix: const Icon(CupertinoIcons.add_circled_solid),
	suffixMode: OverlayVisibilityMode.editing,
	),
	),
	),
	);

	expect(find.byIcon(CupertinoIcons.clear_thick_circled), findsOneWidget);
	expect(find.byIcon(CupertinoIcons.add_circled_solid), findsNothing);

	expect(
	tester.getTopRight(find.byType(EditableText)).dx,
	800.0 - 30.0 /* size of button / - 6.0 / padding */,
	);

	controller.text = 'non empty text';
	await tester.pump();

	expect(find.byIcon(CupertinoIcons.clear_thick_circled), findsNothing);
	expect(find.byIcon(CupertinoIcons.add_circled_solid), findsOneWidget);

	// Still just takes the space of one widget.
	expect(
	tester.getTopRight(find.byType(EditableText)).dx,
	800.0 - 24.0 /* size of button / - 6.0 / padding */,
	);
	},
	);

	testWidgets(
	'font style controls intrinsic height',
	(WidgetTester tester) async {
	await tester.pumpWidget(
	const CupertinoApp(
	home: Center(
	child: CupertinoTextField(),
	),
	),
	);

	expect(
	tester.getSize(find.byType(CupertinoTextField)).height,
	29.0,
	);

	await tester.pumpWidget(
	const CupertinoApp(
	home: Center(
	child: CupertinoTextField(
	style: TextStyle(
	// A larger font.
	fontSize: 50.0,
	),
	),
	),
	),
	);

	expect(
	tester.getSize(find.byType(CupertinoTextField)).height,
	62.0,
	);
	},
	);

	testWidgets(
	'RTL puts attachments to the right places',
	(WidgetTester tester) async {
	await tester.pumpWidget(
	const CupertinoApp(
	home: Directionality(
	textDirection: TextDirection.rtl,
	child: Center(
	child: CupertinoTextField(
	padding: EdgeInsets.all(20.0),
	prefix: Icon(CupertinoIcons.book),
	clearButtonMode: OverlayVisibilityMode.always,
	),
	),
	),
	),
	);

	expect(
	tester.getTopLeft(find.byIcon(CupertinoIcons.book)).dx,
	800.0 - 24.0,
	);

	expect(
	tester.getTopRight(find.byIcon(CupertinoIcons.clear_thick_circled)).dx,
	24.0,
	);
	},
	);

	testWidgets(
	'text fields with no max lines can grow',
	(WidgetTester tester) async {
	await tester.pumpWidget(
	const CupertinoApp(
	home: Center(
	child: CupertinoTextField(
	maxLines: null,
	),
	),
	),
	);

	expect(
	tester.getSize(find.byType(CupertinoTextField)).height,
	29.0, // Initially one line high.
	);

	await tester.enterText(find.byType(CupertinoTextField), '\n');
	await tester.pump();

	expect(
	tester.getSize(find.byType(CupertinoTextField)).height,
	46.0, // Initially one line high.
	);
	},
	);

	testWidgets('cannot enter new lines onto single line TextField', (WidgetTester tester) async {
	final TextEditingController controller = TextEditingController();

	await tester.pumpWidget(
	CupertinoApp(
	home: Center(
	child: CupertinoTextField(
	controller: controller,
	),
	),
	),
	);

	await tester.enterText(find.byType(CupertinoTextField), 'abc\ndef');

	expect(controller.text, 'abcdef');
	});

	testWidgets('copy paste', (WidgetTester tester) async {
	await tester.pumpWidget(
	CupertinoApp(
	home: Column(
	children: const <Widget>[
	CupertinoTextField(
	placeholder: 'field 1',
	),
	CupertinoTextField(
	placeholder: 'field 2',
	),
	],
	),
	),
	);

	await tester.enterText(
	find.widgetWithText(CupertinoTextField, 'field 1'),
	"j'aime la poutine"
	);
	await tester.pump();

	// Tap an area inside the EditableText but with no text.
	await tester.longPressAt(
	tester.getTopRight(find.text("j'aime la poutine"))
	);
	await tester.pump();
	await tester.pump(const Duration(milliseconds: 200));

	await tester.tap(find.text('Select All'));
	await tester.pump();

	await tester.tap(find.text('Cut'));
	await tester.pump();

	// Placeholder 1 is back since the text is cut.
	expect(find.text('field 1'), findsOneWidget);
	expect(find.text('field 2'), findsOneWidget);

	await tester.longPress(find.text('field 2'));
	await tester.pump();
	await tester.pump(const Duration(milliseconds: 200));

	await tester.tap(find.text('Paste'));
	await tester.pump();

	expect(find.text('field 1'), findsOneWidget);
	expect(find.text("j'aime la poutine"), findsOneWidget);
	expect(find.text('field 2'), findsNothing);
	});
	}