packages/flutter/test/cupertino/text_field_test.dart

// Copyright 2014 The Flutter Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

// no-shuffle:
//   //TODO(gspencergoog): Remove this tag once this test's state leaks/test
//   dependencies have been fixed.
//   https://github.com/flutter/flutter/issues/85160
//   Fails with "flutter test --test-randomize-ordering-seed=456"
// reduced-test-set:
//   This file is run as part of a reduced test set in CI on Mac and Windows
//   machines.
@Tags(<String>['reduced-test-set', 'no-shuffle'])

import 'dart:ui' as ui show BoxHeightStyle, BoxWidthStyle, Color;

import 'package:flutter/cupertino.dart';
import 'package:flutter/foundation.dart';
import 'package:flutter/gestures.dart' show DragStartBehavior, PointerDeviceKind, kDoubleTapTimeout, kSecondaryMouseButton;
import 'package:flutter/material.dart';
import 'package:flutter/rendering.dart';
import 'package:flutter/services.dart';
import 'package:flutter_test/flutter_test.dart';

import '../rendering/mock_canvas.dart';
import '../widgets/clipboard_utils.dart';
import '../widgets/editable_text_utils.dart' show OverflowWidgetTextEditingController;
import '../widgets/semantics_tester.dart';

// On web, the context menu (aka toolbar) is provided by the browser.
const bool isContextMenuProvidedByPlatform = isBrowser;

class MockTextSelectionControls extends TextSelectionControls {
  @override
  Widget buildHandle(BuildContext context, TextSelectionHandleType type, double textLineHeight, [VoidCallback? onTap]) {
    throw UnimplementedError();
  }

  @override
  Widget buildToolbar(
    BuildContext context,
    Rect globalEditableRegion,
    double textLineHeight,
    Offset position,
    List<TextSelectionPoint> endpoints,
    TextSelectionDelegate delegate,
    ClipboardStatusNotifier? clipboardStatus,
    Offset? lastSecondaryTapDownPosition,
  ) {
    throw UnimplementedError();
  }

  @override
  Offset getHandleAnchor(TextSelectionHandleType type, double textLineHeight) {
    throw UnimplementedError();
  }

  @override
  Size getHandleSize(double textLineHeight) {
    throw UnimplementedError();
  }
}

class PathBoundsMatcher extends Matcher {
  const PathBoundsMatcher({
    this.rectMatcher,
    this.topMatcher,
    this.leftMatcher,
    this.rightMatcher,
    this.bottomMatcher,
  }) : super();

  final Matcher? rectMatcher;
  final Matcher? topMatcher;
  final Matcher? leftMatcher;
  final Matcher? rightMatcher;
  final Matcher? bottomMatcher;

  @override
  bool matches(covariant Path item, Map<dynamic, dynamic> matchState) {
    final Rect bounds = item.getBounds();

    final List<Matcher?> matchers = <Matcher?> [rectMatcher, topMatcher, leftMatcher, rightMatcher, bottomMatcher];
    final List<dynamic> values = <dynamic> [bounds, bounds.top, bounds.left, bounds.right, bounds.bottom];
    final Map<Matcher, dynamic> failedMatcher = <Matcher, dynamic> {};

    for(int idx = 0; idx < matchers.length; idx++) {
      if (!(matchers[idx]?.matches(values[idx], matchState) ?? true)) {
        failedMatcher[matchers[idx]!] = values[idx];
      }
    }

    matchState['failedMatcher'] = failedMatcher;
    return failedMatcher.isEmpty;
  }

  @override
  Description describe(Description description) => description.add('The actual Rect does not match');

  @override
  Description describeMismatch(covariant Path item, Description mismatchDescription, Map<dynamic, dynamic> matchState, bool verbose) {
    final Description description = super.describeMismatch(item, mismatchDescription, matchState, verbose);
    final Map<Matcher, dynamic> map = matchState['failedMatcher'] as Map<Matcher, dynamic>;
    final Iterable<String> descriptions = map.entries
      .map<String>(
        (MapEntry<Matcher, dynamic> entry) => entry.key.describeMismatch(entry.value, StringDescription(), matchState, verbose).toString(),
      );

    // description is guaranteed to be non-null.
    return description
        ..add('mismatch Rect: ${item.getBounds()}')
        .addAll(': ', ', ', '. ', descriptions);
  }
}

class PathPointsMatcher extends Matcher {
  const PathPointsMatcher({
    this.includes = const <Offset>[],
    this.excludes = const <Offset>[],
  }) : super();

  final Iterable<Offset> includes;
  final Iterable<Offset> excludes;

  @override
  bool matches(covariant Path item, Map<dynamic, dynamic> matchState) {
    final Offset? notIncluded = includes.cast<Offset?>().firstWhere((Offset? offset) => !item.contains(offset!), orElse: () => null);
    final Offset? notExcluded = excludes.cast<Offset?>().firstWhere((Offset? offset) => item.contains(offset!), orElse: () => null);

    matchState['notIncluded'] = notIncluded;
    matchState['notExcluded'] = notExcluded;
    return (notIncluded ?? notExcluded) == null;
  }

  @override
  Description describe(Description description) => description.add('must include these points $includes and must not include $excludes');

  @override
  Description describeMismatch(covariant Path item, Description mismatchDescription, Map<dynamic, dynamic> matchState, bool verbose) {
    final Offset? notIncluded = matchState['notIncluded'] as Offset?;
    final Offset? notExcluded = matchState['notExcluded'] as Offset?;
    final Description desc = super.describeMismatch(item, mismatchDescription, matchState, verbose);

    if ((notExcluded ?? notIncluded) != null) {
      desc.add('Within the bounds of the path ${item.getBounds()}: ');
    }

    if (notIncluded != null) {
      desc.add('$notIncluded is not included. ');
    }
    if (notExcluded != null) {
      desc.add('$notExcluded is not excluded. ');
    }
    return desc;
  }
}

void main() {
  TestWidgetsFlutterBinding.ensureInitialized();
  final MockClipboard mockClipboard = MockClipboard();
  TestDefaultBinaryMessengerBinding.instance!.defaultBinaryMessenger.setMockMethodCallHandler(SystemChannels.platform, mockClipboard.handleMethodCall);

  // Returns the first RenderEditable.
  RenderEditable findRenderEditable(WidgetTester tester) {
    final RenderObject root = tester.renderObject(find.byType(EditableText));
    expect(root, isNotNull);

    RenderEditable? renderEditable;
    void recursiveFinder(RenderObject child) {
      if (child is RenderEditable) {
        renderEditable = child;
        return;
      }
      child.visitChildren(recursiveFinder);
    }
    root.visitChildren(recursiveFinder);
    expect(renderEditable, isNotNull);
    return renderEditable!;
  }

  List<TextSelectionPoint> globalize(Iterable<TextSelectionPoint> points, RenderBox box) {
    return points.map<TextSelectionPoint>((TextSelectionPoint point) {
      return TextSelectionPoint(
        box.localToGlobal(point.point),
        point.direction,
      );
    }).toList();
  }

  Offset textOffsetToBottomLeftPosition(WidgetTester tester, int offset) {
    final RenderEditable renderEditable = findRenderEditable(tester);
    final List<TextSelectionPoint> endpoints = globalize(
      renderEditable.getEndpointsForSelection(
        TextSelection.collapsed(offset: offset),
      ),
      renderEditable,
    );
    expect(endpoints.length, 1);
    return endpoints[0].point;
  }

  // Web has a less threshold for downstream/upstream text position.
  Offset textOffsetToPosition(WidgetTester tester, int offset) => textOffsetToBottomLeftPosition(tester, offset) + const Offset(kIsWeb ? 1 : 0, -2);

  setUp(() async {
    EditableText.debugDeterministicCursor = false;
    // Fill the clipboard so that the Paste option is available in the text
    // selection menu.
    await Clipboard.setData(const ClipboardData(text: 'Clipboard data'));
  });

  testWidgets('can use the desktop cut/copy/paste buttons on Mac', (WidgetTester tester) async {
    final TextEditingController controller = TextEditingController(
      text: 'blah1 blah2',
    );
    await tester.pumpWidget(
      CupertinoApp(
        home: Center(
          child: ConstrainedBox(
            constraints: BoxConstraints.loose(const Size(400, 200)),
            child: CupertinoTextField(controller: controller),
          ),
        ),
      ),
    );

    // Initially, the menu is not shown and there is no selection.
    expect(find.byType(CupertinoButton), findsNothing);
    expect(controller.selection, const TextSelection(baseOffset: -1, extentOffset: -1));

    final Offset midBlah1 = textOffsetToPosition(tester, 2);

    // Right clicking shows the menu.
    final TestGesture gesture = await tester.startGesture(
      midBlah1,
      kind: PointerDeviceKind.mouse,
      buttons: kSecondaryMouseButton,
    );
    await tester.pump();
    await gesture.up();
    await tester.pumpAndSettle();
    expect(controller.selection, const TextSelection(baseOffset: 0, extentOffset: 5));
    expect(find.text('Copy'), findsOneWidget);
    expect(find.text('Cut'), findsOneWidget);
    expect(find.text('Paste'), findsOneWidget);

    // Copy the first word.
    await tester.tap(find.text('Copy'));
    await tester.pumpAndSettle();
    expect(controller.text, 'blah1 blah2');
    expect(controller.selection, const TextSelection(baseOffset: 0, extentOffset: 5));
    expect(find.byType(CupertinoButton), findsNothing);

    // Paste it at the end.
    await gesture.down(textOffsetToPosition(tester, controller.text.length));
    await tester.pump();
    await gesture.up();
    await tester.pumpAndSettle();
    expect(controller.selection, const TextSelection(baseOffset: 11, extentOffset: 11, affinity: TextAffinity.upstream));
    expect(find.text('Cut'), findsNothing);
    expect(find.text('Copy'), findsNothing);
    expect(find.text('Paste'), findsOneWidget);
    await tester.tap(find.text('Paste'));
    await tester.pumpAndSettle();
    expect(controller.text, 'blah1 blah2blah1');
    expect(controller.selection, const TextSelection.collapsed(offset: 16));

    // Cut the first word.
    await gesture.down(midBlah1);
    await tester.pump();
    await gesture.up();
    await tester.pumpAndSettle();
    expect(find.text('Cut'), findsOneWidget);
    expect(find.text('Copy'), findsOneWidget);
    expect(find.text('Paste'), findsOneWidget);
    expect(controller.selection, const TextSelection(baseOffset: 0, extentOffset: 5));
    await tester.tap(find.text('Cut'));
    await tester.pumpAndSettle();
    expect(controller.text, ' blah2blah1');
    expect(controller.selection, const TextSelection(baseOffset: 0, extentOffset: 0));
    expect(find.byType(CupertinoButton), findsNothing);
  },
    variant: const TargetPlatformVariant(<TargetPlatform>{ TargetPlatform.macOS }),
    skip: kIsWeb, // [intended] the web handles this on its own.
  );

  testWidgets('can get text selection color initially on desktop', (WidgetTester tester) async {
    final FocusNode focusNode = FocusNode();
    final TextEditingController controller = TextEditingController(
      text: 'blah1 blah2',
    );
    await tester.pumpWidget(
      CupertinoApp(
        home: Center(
          child: RepaintBoundary(
            child: CupertinoTextField(
              key: const ValueKey<int>(1),
              controller: controller,
              focusNode: focusNode,
            ),
          ),
        ),
      ),
    );

    controller.selection = const TextSelection(baseOffset: 0, extentOffset: 11);
    focusNode.requestFocus();
    await tester.pump();

    expect(focusNode.hasFocus, true);
    await expectLater(
      find.byKey(const ValueKey<int>(1)),
      matchesGoldenFile('text_field_golden.text_selection_color.0.png'),
    );
  });

  testWidgets('Activates the text field when receives semantics focus on Mac, Windows', (WidgetTester tester) async {
    final SemanticsTester semantics = SemanticsTester(tester);
    final SemanticsOwner semanticsOwner = tester.binding.pipelineOwner.semanticsOwner!;
    final FocusNode focusNode = FocusNode();
    await tester.pumpWidget(
      CupertinoApp(
        home: CupertinoTextField(focusNode: focusNode),
      ),
    );
    expect(semantics, hasSemantics(
      TestSemantics.root(
        children: <TestSemantics>[
          TestSemantics(
            id: 1,
            textDirection: TextDirection.ltr,
            children: <TestSemantics>[
              TestSemantics(
                id: 2,
                children: <TestSemantics>[
                  TestSemantics(
                    id: 3,
                    flags: <SemanticsFlag>[SemanticsFlag.scopesRoute],
                    children: <TestSemantics>[
                      TestSemantics(
                        id: 4,
                        flags: <SemanticsFlag>[SemanticsFlag.isTextField,
                          SemanticsFlag.hasEnabledState, SemanticsFlag.isEnabled,],
                        actions: <SemanticsAction>[SemanticsAction.tap,
                          SemanticsAction.didGainAccessibilityFocus,],
                        textDirection: TextDirection.ltr,
                      ),
                    ],
                  ),
                ],
              ),
            ],
          ),
        ],
      ),
      ignoreRect: true,
      ignoreTransform: true,
    ));

    expect(focusNode.hasFocus, isFalse);
    semanticsOwner.performAction(4, SemanticsAction.didGainAccessibilityFocus);
    await tester.pumpAndSettle();
    expect(focusNode.hasFocus, isTrue);
    semantics.dispose();
  }, variant: const TargetPlatformVariant(<TargetPlatform>{ TargetPlatform.macOS, TargetPlatform.windows }));

  testWidgets(
    'takes available space horizontally and takes intrinsic space vertically no-strut',
    (WidgetTester tester) async {
      await tester.pumpWidget(
        CupertinoApp(
          home: Center(
            child: ConstrainedBox(
              constraints: BoxConstraints.loose(const Size(200, 200)),
              child: const CupertinoTextField(strutStyle: StrutStyle.disabled),
            ),
          ),
        ),
      );

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

  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 (17) + decoration (12).
      );
    },
  );

  testWidgets(
    'uses DefaultSelectionStyle for selection and cursor colors if provided',
    (WidgetTester tester) async {
      const Color selectionColor = Colors.black;
      const Color cursorColor = Colors.white;

      await tester.pumpWidget(
        const CupertinoApp(
          home: Center(
            child: DefaultSelectionStyle(
              selectionColor: selectionColor,
              cursorColor: cursorColor,
              child: CupertinoTextField(
                autofocus: true,
              )
            ),
          ),
        ),
      );
      await tester.pump();
      final EditableTextState state = tester.state<EditableTextState>(find.byType(EditableText));
      expect(state.widget.selectionColor, selectionColor);
      expect(state.widget.cursorColor, cursorColor);
    },
  );

  testWidgets('Text field drops selection color when losing focus', (WidgetTester tester) async {
    // Regression test for https://github.com/flutter/flutter/issues/103341.
    final Key key1 = UniqueKey();
    final Key key2 = UniqueKey();
    final TextEditingController controller1 = TextEditingController();
    const Color selectionColor = Colors.orange;
    const Color cursorColor = Colors.red;

    await tester.pumpWidget(
      CupertinoApp(
        home: Center(
          child: DefaultSelectionStyle(
            selectionColor: selectionColor,
            cursorColor: cursorColor,
            child: Column(
              children: <Widget>[
                CupertinoTextField(
                  key: key1,
                  controller: controller1,
                ),
                CupertinoTextField(key: key2),
              ],
            ),
          ),
        ),
      ),
    );

    const TextSelection selection = TextSelection(baseOffset: 0, extentOffset: 4);
    final EditableTextState state1 = tester.state<EditableTextState>(find.byType(EditableText).first);
    final EditableTextState state2 = tester.state<EditableTextState>(find.byType(EditableText).last);

    await tester.tap(find.byKey(key1));
    await tester.enterText(find.byKey(key1), 'abcd');
    await tester.pump();

    await tester.tap(find.byKey(key2));
    await tester.enterText(find.byKey(key2), 'dcba');
    await tester.pump();

    // Focus and selection is active on first TextField, so the second TextFields
    // selectionColor should be dropped.
    await tester.tap(find.byKey(key1));
    controller1.selection = const TextSelection(baseOffset: 0, extentOffset: 4);
    await tester.pump();
    expect(controller1.selection, selection);
    expect(state1.widget.selectionColor, selectionColor);
    expect(state2.widget.selectionColor, null);

    // Focus and selection is active on second TextField, so the first TextFields
    // selectionColor should be dropped.
    await tester.tap(find.byKey(key2));
    await tester.pump();
    expect(state1.widget.selectionColor, null);
    expect(state2.widget.selectionColor, selectionColor);
  });

  testWidgets(
    'multi-lined text fields are intrinsically taller no-strut',
    (WidgetTester tester) async {
      await tester.pumpWidget(
        CupertinoApp(
          home: Center(
            child: ConstrainedBox(
              constraints: BoxConstraints.loose(const Size(200, 200)),
              child: const CupertinoTextField(
                maxLines: 3,
                strutStyle: StrutStyle.disabled,
              ),
            ),
          ),
        ),
      );

      expect(
        tester.getSize(find.byType(CupertinoTextField)),
        const Size(200, 63), // 63 is the height of the default font (17) * maxlines (3) + decoration height (12).
      );
    },
  );

  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(
    'strut height override',
    (WidgetTester tester) async {
      await tester.pumpWidget(
        CupertinoApp(
          home: Center(
            child: ConstrainedBox(
              constraints: BoxConstraints.loose(const Size(200, 200)),
              child: const CupertinoTextField(
                maxLines: 3,
                strutStyle: StrutStyle(
                  fontSize: 8,
                  forceStrutHeight: true,
                ),
              ),
            ),
          ),
        ),
      );

      expect(
        tester.getSize(find.byType(CupertinoTextField)),
        const Size(200, 36),
      );
    },
    // TODO(mdebbar): Strut styles support.
    skip: isBrowser, // https://github.com/flutter/flutter/issues/32243
  );

  testWidgets(
    'strut forces field taller',
    (WidgetTester tester) async {
      await tester.pumpWidget(
        CupertinoApp(
          home: Center(
            child: ConstrainedBox(
              constraints: BoxConstraints.loose(const Size(200, 200)),
              child: const CupertinoTextField(
                maxLines: 3,
                style: TextStyle(fontSize: 10),
                strutStyle: StrutStyle(
                  fontSize: 18,
                  forceStrutHeight: true,
                ),
              ),
            ),
          ),
        ),
      );

      expect(
        tester.getSize(find.byType(CupertinoTextField)),
        const Size(200, 66),
      );
    },
    // TODO(mdebbar): Strut styles support.
    skip: isBrowser, // https://github.com/flutter/flutter/issues/32243
  );

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

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

      expect(
        decoration.borderRadius,
        const BorderRadius.all(Radius.circular(5)),
      );
      expect(
        decoration.border!.bottom.color.value,
        0x33000000,
      );

      // Dark mode.
      await tester.pumpWidget(
        const CupertinoApp(
          theme: CupertinoThemeData(brightness: Brightness.dark),
          home: Center(
            child: CupertinoTextField(),
          ),
        ),
      );

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

      expect(
        decoration.borderRadius,
        const BorderRadius.all(Radius.circular(5)),
      );
      expect(
        decoration.border!.bottom.color.value,
        0x33FFFFFF,
      );
    },
  );

  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('iOS cursor has offset', (WidgetTester tester) async {
    await tester.pumpWidget(
      const CupertinoApp(
        home: CupertinoTextField(),
      ),
    );

    final EditableText editableText = tester.firstWidget(find.byType(EditableText));
    expect(editableText.cursorOffset, const Offset(-2.0 / 3.0, 0));
  });

  testWidgets('Cursor radius is 2.0', (WidgetTester tester) async {
    await tester.pumpWidget(
      const CupertinoApp(
        home: CupertinoTextField(),
      ),
    );

    final EditableTextState editableTextState = tester.firstState(find.byType(EditableText));
    final RenderEditable renderEditable = editableTextState.renderEditable;

    expect(renderEditable.cursorRadius, const Radius.circular(2.0));
  }, variant: const TargetPlatformVariant(<TargetPlatform>{ TargetPlatform.iOS, TargetPlatform.macOS }));

  testWidgets('Cupertino cursor android golden', (WidgetTester tester) async {
    final Widget widget = CupertinoApp(
      home: Center(
        child: RepaintBoundary(
          key: const ValueKey<int>(1),
          child: ConstrainedBox(
            constraints: BoxConstraints.loose(const Size(400, 400)),
            child: const CupertinoTextField(),
          ),
        ),
      ),
    );
    await tester.pumpWidget(widget);

    const String testValue = 'A short phrase';
    await tester.enterText(find.byType(CupertinoTextField), testValue);
    await tester.pump();

    await tester.tapAt(textOffsetToPosition(tester, testValue.length));
    await tester.pumpAndSettle();

    await expectLater(
      find.byKey(const ValueKey<int>(1)),
      matchesGoldenFile('text_field_cursor_test.cupertino.0.png'),
    );
  });

  testWidgets('Cupertino cursor golden', (WidgetTester tester) async {
    final Widget widget = CupertinoApp(
      home: Center(
        child: RepaintBoundary(
          key: const ValueKey<int>(1),
          child: ConstrainedBox(
            constraints: BoxConstraints.loose(const Size(400, 400)),
            child: const CupertinoTextField(),
          ),
        ),
      ),
    );
    await tester.pumpWidget(widget);

    const String testValue = 'A short phrase';
    await tester.enterText(find.byType(CupertinoTextField), testValue);
    await tester.pump();

    await tester.tapAt(textOffsetToPosition(tester, testValue.length));
    await tester.pumpAndSettle();

    await expectLater(
      find.byKey(const ValueKey<int>(1)),
      matchesGoldenFile(
        'text_field_cursor_test.cupertino_${debugDefaultTargetPlatformOverride!.name.toLowerCase()}.1.png',
      ),
    );
  }, variant: const TargetPlatformVariant(<TargetPlatform>{ TargetPlatform.iOS,  TargetPlatform.macOS }));

  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(
    'placeholder respects textAlign',
    (WidgetTester tester) async {
      await tester.pumpWidget(
        const CupertinoApp(
          home: Center(
            child: CupertinoTextField(
              placeholder: 'placeholder',
              textAlign: TextAlign.right,
            ),
          ),
        ),
      );

      final Text placeholder = tester.widget(find.text('placeholder'));
      expect(placeholder.textAlign, TextAlign.right);

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

      final EditableText inputText = tester.widget(find.text('input'));
      expect(placeholder.textAlign, inputText.textAlign);
    },
  );

  testWidgets('placeholder dark mode', (WidgetTester tester) async {
    await tester.pumpWidget(
      const CupertinoApp(
        theme: CupertinoThemeData(brightness: Brightness.dark),
        home: Center(
          child: CupertinoTextField(
            placeholder: 'placeholder',
            textAlign: TextAlign.right,
          ),
        ),
      ),
    );

    final Text placeholder = tester.widget(find.text('placeholder'));
    expect(placeholder.style!.color!.value, CupertinoColors.placeholderText.darkColor.value);
  });

  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!.value, CupertinoColors.placeholderText.color.value);

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

  testWidgets(
    "placeholderStyle modifies placeholder's style and doesn't affect text's style",
    (WidgetTester tester) async {
      await tester.pumpWidget(
        const CupertinoApp(
          home: Center(
            child: CupertinoTextField(
              placeholder: 'placeholder',
              style: TextStyle(
                color: Color(0x00FFFFFF),
                fontWeight: FontWeight.w300,
              ),
              placeholderStyle: TextStyle(
                color: Color(0xAAFFFFFF),
                fontWeight: FontWeight.w600,
              ),
            ),
          ),
        ),
      );

      final Text placeholder = tester.widget(find.text('placeholder'));
      expect(placeholder.style!.color, const Color(0xAAFFFFFF));
      expect(placeholder.style!.fontWeight, FontWeight.w600);

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

      final EditableText inputText = tester.widget(find.text('input'));
      expect(inputText.style.color, const Color(0x00FFFFFF));
      expect(inputText.style.fontWeight, FontWeight.w300);
    },
  );

  testWidgets(
    'prefix widget is in front of the text',
    (WidgetTester tester) async {
      final FocusNode focusNode = FocusNode();
      await tester.pumpWidget(
        CupertinoApp(
          home: Center(
            child: CupertinoTextField(
              focusNode: focusNode,
              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 {
      final FocusNode focusNode = FocusNode();
      await tester.pumpWidget(
        CupertinoApp(
          home: Center(
            child: CupertinoTextField(
              focusNode: focusNode,
              suffix: const 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 no-strut',
    (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),
              strutStyle: StrutStyle.disabled,
            ),
          ),
        ),
      );

      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),
              strutStyle: StrutStyle.disabled,
            ),
          ),
        ),
      );

      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(
    '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(
    'tapping clear button also calls onChanged when text not empty',
    (WidgetTester tester) async {
      String value = 'text entry';
      final TextEditingController controller = TextEditingController();
      await tester.pumpWidget(
        CupertinoApp(
          home: Center(
            child: CupertinoTextField(
              controller: controller,
              placeholder: 'placeholder',
              onChanged: (String newValue) => value = newValue,
              clearButtonMode: OverlayVisibilityMode.always,
            ),
          ),
        ),
      );

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

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

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

  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 no-strut',
    (WidgetTester tester) async {
      await tester.pumpWidget(
        const CupertinoApp(
          home: Center(
            child: CupertinoTextField(
              strutStyle: StrutStyle.disabled,
            ),
          ),
        ),
      );

      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,
              ),
              strutStyle: StrutStyle.disabled,
            ),
          ),
        ),
      );

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

  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 no-strut',
    (WidgetTester tester) async {
      await tester.pumpWidget(
        const CupertinoApp(
          home: Center(
            child: CupertinoTextField(
              maxLines: null,
              strutStyle: StrutStyle.disabled,
            ),
          ),
        ),
      );

      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(
    '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('toolbar has the same visual regardless of theming', (WidgetTester tester) async {
    final TextEditingController controller = TextEditingController(
      text: "j'aime la poutine",
    );

    await tester.pumpWidget(
      CupertinoApp(
        home: Column(
          children: <Widget>[
            CupertinoTextField(
              controller: controller,
            ),
          ],
        ),
      ),
    );

    await tester.longPressAt(
      tester.getTopRight(find.text("j'aime la poutine")),
    );
    await tester.pump();
    await tester.pump(const Duration(milliseconds: 200));

    Text text = tester.widget<Text>(find.text('Paste'));
    expect(text.style!.color, CupertinoColors.white);
    expect(text.style!.fontSize, 14);
    expect(text.style!.letterSpacing, -0.15);
    expect(text.style!.fontWeight, FontWeight.w400);

    // Change the theme.
    await tester.pumpWidget(
      CupertinoApp(
        theme: const CupertinoThemeData(
          brightness: Brightness.dark,
          textTheme: CupertinoTextThemeData(
            textStyle: TextStyle(fontSize: 100, fontWeight: FontWeight.w800),
          ),
        ),
        home: Column(
          children: <Widget>[
            CupertinoTextField(
              controller: controller,
            ),
          ],
        ),
      ),
    );

    await tester.longPressAt(
      tester.getTopRight(find.text("j'aime la poutine")),
    );
    await tester.pump();
    await tester.pump(const Duration(milliseconds: 200));

    text = tester.widget<Text>(find.text('Paste'));
    // The toolbar buttons' text are still the same style.
    expect(text.style!.color, CupertinoColors.white);
    expect(text.style!.fontSize, 14);
    expect(text.style!.letterSpacing, -0.15);
    expect(text.style!.fontWeight, FontWeight.w400);
  }, skip: isContextMenuProvidedByPlatform); // [intended] only applies to platforms where we supply the context menu.

  testWidgets('text field toolbar options correctly changes options', (WidgetTester tester) async {
    final TextEditingController controller = TextEditingController(
      text: 'Atwater Peel Sherbrooke Bonaventure',
    );
    await tester.pumpWidget(
      CupertinoApp(
        home: Column(
          children: <Widget>[
            CupertinoTextField(
              controller: controller,
              toolbarOptions: const ToolbarOptions(copy: true),
            ),
          ],
        ),
      ),
    );

      // Long press to put the cursor after the "w".
      const int index = 3;
      await tester.longPressAt(textOffsetToPosition(tester, index));
      await tester.pump();
      expect(
        controller.selection,
        const TextSelection.collapsed(offset: index),
      );

      // Double tap on the same location to select the word around the cursor.
      await tester.tapAt(textOffsetToPosition(tester, index));
      await tester.pump(const Duration(milliseconds: 50));
      await tester.tapAt(textOffsetToPosition(tester, index));
      await tester.pump();
      expect(
        controller.selection,
        const TextSelection(baseOffset: 0, extentOffset: 7),
      );

      // Selected text shows 'Copy'.
      expect(find.text('Paste'), findsNothing);
      expect(find.text('Copy'), findsOneWidget);
      expect(find.text('Cut'), findsNothing);
      expect(find.text('Select All'), findsNothing);
  }, skip: isContextMenuProvidedByPlatform); // [intended] only applies to platforms where we supply the context menu.

  testWidgets('Read only text field', (WidgetTester tester) async {
    final TextEditingController controller = TextEditingController(text: 'readonly');

    await tester.pumpWidget(
      CupertinoApp(
        home: Column(
          children: <Widget>[
            CupertinoTextField(
              controller: controller,
              readOnly: true,
            ),
          ],
        ),
      ),
    );
    // Read only text field cannot open keyboard.
    await tester.showKeyboard(find.byType(CupertinoTextField));
    expect(tester.testTextInput.hasAnyClients, false);

    await tester.longPressAt(
      tester.getTopRight(find.text('readonly')),
    );

    await tester.pump();

    expect(find.text('Paste'), findsNothing);
    expect(find.text('Cut'), findsNothing);
    expect(find.text('Select All'), findsOneWidget);

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

    expect(find.text('Copy'), findsOneWidget);
    expect(find.text('Paste'), findsNothing);
    expect(find.text('Cut'), findsNothing);
  }, skip: isContextMenuProvidedByPlatform); // [intended] only applies to platforms where we supply the context menu.

  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'), warnIfMissed: false); // can't actually hit placeholder
    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);
  }, skip: isContextMenuProvidedByPlatform); // [intended] only applies to platforms where we supply the context menu.

  testWidgets(
    'tap moves cursor to the edge of the word it tapped on',
    (WidgetTester tester) async {
      final TextEditingController controller = TextEditingController(
        text: 'Atwater Peel Sherbrooke Bonaventure',
      );
      await tester.pumpWidget(
        CupertinoApp(
          home: Center(
            child: CupertinoTextField(
              controller: controller,
            ),
          ),
        ),
      );

      final Offset textFieldStart = tester.getTopLeft(find.byType(CupertinoTextField));

      await tester.tapAt(textFieldStart + const Offset(50.0, 5.0));
      await tester.pump();

      // We moved the cursor.
      expect(
        controller.selection,
        const TextSelection.collapsed(offset: 7, affinity: TextAffinity.upstream),
      );

      // But don't trigger the toolbar.
      expect(find.byType(CupertinoButton), findsNothing);
  }, variant: const TargetPlatformVariant(<TargetPlatform>{ TargetPlatform.iOS }));

  testWidgets(
    'slow double tap does not trigger double tap',
    (WidgetTester tester) async {
      final TextEditingController controller = TextEditingController(
        text: 'Atwater Peel Sherbrooke Bonaventure',
      );
      // On iOS/iPadOS, during a tap we select the edge of the word closest to the tap.
      // On macOS, we select the precise position of the tap.
      final bool isTargetPlatformMobile = defaultTargetPlatform == TargetPlatform.iOS;
      await tester.pumpWidget(
        CupertinoApp(
          home: Center(
            child: CupertinoTextField(
              controller: controller,
            ),
          ),
        ),
      );

      final Offset pos = textOffsetToPosition(tester, 6); // Index of 'Atwate|r'.

      await tester.tapAt(pos);
      await tester.pump(const Duration(milliseconds: 500));
      await tester.tapAt(pos);
      await tester.pump();

      // Plain collapsed selection.
      expect(controller.selection.isCollapsed, isTrue);
      expect(controller.selection.baseOffset, isTargetPlatformMobile ? 7 : 6);

      // No toolbar.
      expect(find.byType(CupertinoButton), findsNothing);
  }, variant: const TargetPlatformVariant(<TargetPlatform>{ TargetPlatform.iOS,  TargetPlatform.macOS }));

  testWidgets(
    'double tap selects word and first tap of double tap moves cursor',
    (WidgetTester tester) async {
      final TextEditingController controller = TextEditingController(
        text: 'Atwater Peel Sherbrooke Bonaventure',
      );
      await tester.pumpWidget(
        CupertinoApp(
          home: Center(
            child: CupertinoTextField(
              controller: controller,
            ),
          ),
        ),
      );

      // Long press to put the cursor after the "w".
      const int index = 3;
      await tester.longPressAt(textOffsetToPosition(tester, index));
      await tester.pump();
      expect(
        controller.selection,
        const TextSelection.collapsed(offset: index),
      );

      // Double tap on the same location to select the word around the cursor.
      await tester.tapAt(textOffsetToPosition(tester, index));
      await tester.pump(const Duration(milliseconds: 50));
      await tester.tapAt(textOffsetToPosition(tester, index));
      await tester.pumpAndSettle();
      expect(
        controller.selection,
        const TextSelection(baseOffset: 0, extentOffset: 7),
      );

      // Selected text shows 3 toolbar buttons.
      expect(find.byType(CupertinoButton), isContextMenuProvidedByPlatform ? findsNothing : findsNWidgets(3));
    },
  );

  testWidgets(
    'double tap does not select word on read-only obscured field',
        (WidgetTester tester) async {
      final TextEditingController controller = TextEditingController(
        text: 'Atwater Peel Sherbrooke Bonaventure',
      );
      await tester.pumpWidget(
        CupertinoApp(
          home: Center(
            child: CupertinoTextField(
              readOnly: true,
              obscureText: true,
              controller: controller,
            ),
          ),
        ),
      );

      // Long press to put the cursor after the "w".
      const int index = 3;
      await tester.longPressAt(textOffsetToPosition(tester, index));
      await tester.pump();

      // Second tap doesn't select anything.
      await tester.tapAt(textOffsetToPosition(tester, index));
      await tester.pump(const Duration(milliseconds: 50));
      await tester.tapAt(textOffsetToPosition(tester, index));
      await tester.pumpAndSettle();
      expect(
        controller.selection,
        const TextSelection.collapsed(offset: 35),
      );

      // Selected text shows nothing.
      expect(find.byType(CupertinoButton), findsNothing);
    },
  );

  testWidgets('Readonly text field does not have tap action', (WidgetTester tester) async {
    final SemanticsTester semantics = SemanticsTester(tester);

    await tester.pumpWidget(
      const CupertinoApp(
        home: Center(
          child: CupertinoTextField(
            maxLength: 10,
            readOnly: true,
          ),
        ),
      ),
    );

    expect(semantics, isNot(includesNodeWith(actions: <SemanticsAction>[SemanticsAction.tap])));

    semantics.dispose();
  });

  testWidgets(
    'double tap selects word and first tap of double tap moves cursor',
    (WidgetTester tester) async {
      final TextEditingController controller = TextEditingController(
        text: 'Atwater Peel Sherbrooke Bonaventure',
      );
      // On iOS/iPadOS, during a tap we select the edge of the word closest to the tap.
      // On macOS, we select the precise position of the tap.
      final bool isTargetPlatformMobile = defaultTargetPlatform == TargetPlatform.iOS;
      await tester.pumpWidget(
        CupertinoApp(
          home: Center(
            child: CupertinoTextField(
              controller: controller,
            ),
          ),
        ),
      );

      final Offset ePos = textOffsetToPosition(tester, 6); // Index of 'Atwate|r'.
      final Offset pPos = textOffsetToPosition(tester, 9); // Index of 'P|eel'.


      await tester.tapAt(ePos);
      await tester.pump(const Duration(milliseconds: 500));

      await tester.tapAt(pPos);
      await tester.pump(const Duration(milliseconds: 50));
      // First tap moved the cursor.
      expect(controller.selection.isCollapsed, isTrue);
      expect(controller.selection.baseOffset, isTargetPlatformMobile ? 8 : 9);

      await tester.tapAt(pPos);
      await tester.pumpAndSettle();

      // Second tap selects the word around the cursor.
      expect(
        controller.selection,
        const TextSelection(baseOffset: 8, extentOffset: 12),
      );

      // Selected text shows 3 toolbar buttons.
      expect(find.byType(CupertinoButton), isContextMenuProvidedByPlatform ? findsNothing : findsNWidgets(3));
  }, variant: const TargetPlatformVariant(<TargetPlatform>{ TargetPlatform.iOS,  TargetPlatform.macOS }));

  testWidgets(
    'double tap hold selects word',
    (WidgetTester tester) async {
      final TextEditingController controller = TextEditingController(
        text: 'Atwater Peel Sherbrooke Bonaventure',
      );
      await tester.pumpWidget(
        CupertinoApp(
          home: Center(
            child: CupertinoTextField(
              controller: controller,
            ),
          ),
        ),
      );

      final Offset textFieldStart = tester.getTopLeft(find.byType(CupertinoTextField));

      await tester.tapAt(textFieldStart + const Offset(150.0, 5.0));
      await tester.pump(const Duration(milliseconds: 50));
      final TestGesture gesture =
         await tester.startGesture(textFieldStart + const Offset(150.0, 5.0));
      // Hold the press.
      await tester.pumpAndSettle();

      expect(
        controller.selection,
        const TextSelection(baseOffset: 8, extentOffset: 12),
      );

      // Selected text shows 3 toolbar buttons.
      expect(find.byType(CupertinoButton), isContextMenuProvidedByPlatform ? findsNothing : findsNWidgets(3));

      await gesture.up();
      await tester.pump();

      // Still selected.
      expect(
        controller.selection,
        const TextSelection(baseOffset: 8, extentOffset: 12),
      );
      expect(find.byType(CupertinoButton), isContextMenuProvidedByPlatform ? findsNothing : findsNWidgets(3));
    },
  );

  testWidgets(
    'tap after a double tap select is not affected',
    (WidgetTester tester) async {
      final TextEditingController controller = TextEditingController(
        text: 'Atwater Peel Sherbrooke Bonaventure',
      );
      // On iOS/iPadOS, during a tap we select the edge of the word closest to the tap.
      // On macOS, we select the precise position of the tap.
      final bool isTargetPlatformMobile = defaultTargetPlatform == TargetPlatform.iOS;
      await tester.pumpWidget(
        CupertinoApp(
          home: Center(
            child: CupertinoTextField(
              controller: controller,
            ),
          ),
        ),
      );

      final Offset pPos = textOffsetToPosition(tester, 9); // Index of 'P|eel'.
      final Offset ePos = textOffsetToPosition(tester, 6); // Index of 'Atwate|r'

      await tester.tapAt(pPos);
      await tester.pump(const Duration(milliseconds: 50));
      // First tap moved the cursor.
      expect(controller.selection.isCollapsed, isTrue);
      expect(controller.selection.baseOffset, isTargetPlatformMobile ? 8 : 9);

      await tester.tapAt(pPos);
      await tester.pump(const Duration(milliseconds: 500));

      await tester.tapAt(ePos);
      await tester.pump();

      // Plain collapsed selection at the edge of first word. In iOS 12, the
      // first tap after a double tap ends up putting the cursor at where
      // you tapped instead of the edge like every other single tap. This is
      // likely a bug in iOS 12 and not present in other versions.
      expect(controller.selection.isCollapsed, isTrue);
      expect(controller.selection.baseOffset, isTargetPlatformMobile ? 7 : 6);

      // No toolbar.
      expect(find.byType(CupertinoButton), findsNothing);
  }, variant: const TargetPlatformVariant(<TargetPlatform>{ TargetPlatform.iOS,  TargetPlatform.macOS }));

  testWidgets('double tapping a space selects the previous word on iOS', (WidgetTester tester) async {
    final TextEditingController controller = TextEditingController(
      text: ' blah blah  \n  blah',
    );
    await tester.pumpWidget(
      CupertinoApp(
        home: Center(
          child: CupertinoTextField(
            controller: controller,
            maxLines: 2,
          ),
        ),
      ),
    );

    expect(controller.value.selection, isNotNull);
    expect(controller.value.selection.baseOffset, -1);
    expect(controller.value.selection.extentOffset, -1);

    // Put the cursor at the end of the field.
    await tester.tapAt(textOffsetToPosition(tester, 19));
    expect(controller.value.selection, isNotNull);
    expect(controller.value.selection.baseOffset, 19);
    expect(controller.value.selection.extentOffset, 19);

    // Double tapping the second space selects the previous word.
    await tester.pump(const Duration(milliseconds: 500));
    await tester.tapAt(textOffsetToPosition(tester, 5));
    await tester.pump(const Duration(milliseconds: 50));
    await tester.tapAt(textOffsetToPosition(tester, 5));
    await tester.pumpAndSettle();
    expect(controller.value.selection, isNotNull);
    expect(controller.value.selection.baseOffset, 1);
    expect(controller.value.selection.extentOffset, 5);

    // Put the cursor at the end of the field.
    await tester.tapAt(textOffsetToPosition(tester, 19));
    expect(controller.value.selection, isNotNull);
    expect(controller.value.selection.baseOffset, 19);
    expect(controller.value.selection.extentOffset, 19);

    // Double tapping the first space selects the space.
    await tester.pump(const Duration(milliseconds: 500));
    await tester.tapAt(textOffsetToPosition(tester, 0));
    await tester.pump(const Duration(milliseconds: 50));
    await tester.tapAt(textOffsetToPosition(tester, 0));
    await tester.pumpAndSettle();
    expect(controller.value.selection, isNotNull);
    expect(controller.value.selection.baseOffset, 0);
    expect(controller.value.selection.extentOffset, 1);

    // Put the cursor at the end of the field.
    await tester.tapAt(textOffsetToPosition(tester, 19));
    expect(controller.value.selection, isNotNull);
    expect(controller.value.selection.baseOffset, 19);
    expect(controller.value.selection.extentOffset, 19);

    // Double tapping the last space selects all previous contiguous spaces on
    // both lines and the previous word.
    await tester.pump(const Duration(milliseconds: 500));
    await tester.tapAt(textOffsetToPosition(tester, 14));
    await tester.pump(const Duration(milliseconds: 50));
    await tester.tapAt(textOffsetToPosition(tester, 14));
    await tester.pumpAndSettle();
    expect(controller.value.selection, isNotNull);
    expect(controller.value.selection.baseOffset, 6);
    expect(controller.value.selection.extentOffset, 14);
  }, variant: const TargetPlatformVariant(<TargetPlatform>{ TargetPlatform.iOS }));

  testWidgets('double tapping a space selects the space on Mac', (WidgetTester tester) async {
    final TextEditingController controller = TextEditingController(
      text: ' blah blah',
    );
    await tester.pumpWidget(
      CupertinoApp(
        home: Center(
          child: CupertinoTextField(
            controller: controller,
          ),
        ),
      ),
    );

    expect(controller.value.selection, isNotNull);
    expect(controller.value.selection.baseOffset, -1);
    expect(controller.value.selection.extentOffset, -1);

    // Put the cursor at the end of the field.
    await tester.tapAt(textOffsetToPosition(tester, 10));
    expect(controller.value.selection, isNotNull);
    expect(controller.value.selection.baseOffset, 10);
    expect(controller.value.selection.extentOffset, 10);

    // Double tapping the second space selects it.
    await tester.pump(const Duration(milliseconds: 500));
    await tester.tapAt(textOffsetToPosition(tester, 5));
    await tester.pump(const Duration(milliseconds: 50));
    await tester.tapAt(textOffsetToPosition(tester, 5));
    await tester.pumpAndSettle();

    expect(controller.value.selection, isNotNull);
    expect(controller.value.selection.baseOffset, 5);
    expect(controller.value.selection.extentOffset, 6);

    // Put the cursor at the end of the field.
    await tester.tapAt(textOffsetToPosition(tester, 10));
    expect(controller.value.selection, isNotNull);
    expect(controller.value.selection.baseOffset, 10);
    expect(controller.value.selection.extentOffset, 10);

    // Double tapping the first space selects it.
    await tester.pump(const Duration(milliseconds: 500));
    await tester.tapAt(textOffsetToPosition(tester, 0));
    await tester.pump(const Duration(milliseconds: 50));
    await tester.tapAt(textOffsetToPosition(tester, 0));
    await tester.pumpAndSettle();
    expect(controller.value.selection, isNotNull);
    expect(controller.value.selection.baseOffset, 0);
    expect(controller.value.selection.extentOffset, 1);
  }, variant: const TargetPlatformVariant(<TargetPlatform>{ TargetPlatform.macOS }));

  testWidgets('double clicking a space selects the space on Mac', (WidgetTester tester) async {
    final TextEditingController controller = TextEditingController(
      text: ' blah blah',
    );
    await tester.pumpWidget(
      CupertinoApp(
        home: Center(
          child: CupertinoTextField(
            controller: controller,
          ),
        ),
      ),
    );

    expect(controller.value.selection, isNotNull);
    expect(controller.value.selection.baseOffset, -1);
    expect(controller.value.selection.extentOffset, -1);

    // Put the cursor at the end of the field.
    final TestGesture gesture = await tester.startGesture(
      textOffsetToPosition(tester, 10),
      pointer: 7,
      kind: PointerDeviceKind.mouse,
    );
    await tester.pump();
    await gesture.up();
    expect(controller.value.selection, isNotNull);
    expect(controller.value.selection.baseOffset, 10);
    expect(controller.value.selection.extentOffset, 10);

    // Double tapping the second space selects it.
    await tester.pump(const Duration(milliseconds: 500));
    await gesture.down(textOffsetToPosition(tester, 5));
    await tester.pump();
    await gesture.up();
    await tester.pump(const Duration(milliseconds: 50));
    await gesture.down(textOffsetToPosition(tester, 5));
    await tester.pump();
    await gesture.up();
    await tester.pumpAndSettle();
    expect(controller.value.selection, isNotNull);
    expect(controller.value.selection.baseOffset, 5);
    expect(controller.value.selection.extentOffset, 6);

    // Put the cursor at the end of the field.
    await gesture.down(textOffsetToPosition(tester, 10));
    await tester.pump();
    await gesture.up();
    expect(controller.value.selection, isNotNull);
    expect(controller.value.selection.baseOffset, 10);
    expect(controller.value.selection.extentOffset, 10);

    // Double tapping the first space selects it.
    await tester.pump(const Duration(milliseconds: 500));
    await gesture.down(textOffsetToPosition(tester, 0));
    await tester.pump();
    await gesture.up();
    await tester.pump(const Duration(milliseconds: 50));
    await gesture.down(textOffsetToPosition(tester, 0));
    await tester.pump();
    await gesture.up();
    await tester.pumpAndSettle();
    expect(controller.value.selection, isNotNull);
    expect(controller.value.selection.baseOffset, 0);
    expect(controller.value.selection.extentOffset, 1);
  }, variant: const TargetPlatformVariant(<TargetPlatform>{ TargetPlatform.macOS }));

  testWidgets(
    'An obscured CupertinoTextField is not selectable when disabled',
    (WidgetTester tester) async {
      final TextEditingController controller = TextEditingController(
        text: 'Atwater Peel Sherbrooke Bonaventure',
      );
      await tester.pumpWidget(
        CupertinoApp(
          home: Center(
            child: CupertinoTextField(
              controller: controller,
              obscureText: true,
              enableInteractiveSelection: false,
            ),
          ),
        ),
      );

      final Offset textFieldStart = tester.getTopLeft(find.byType(CupertinoTextField));

      await tester.tapAt(textFieldStart + const Offset(150.0, 5.0));
      await tester.pump(const Duration(milliseconds: 50));
      final TestGesture gesture =
         await tester.startGesture(textFieldStart + const Offset(150.0, 5.0));
      // Hold the press.
      await tester.pump(const Duration(milliseconds: 500));

      // Nothing is selected despite the double tap long press gesture.
      expect(
        controller.selection,
        const TextSelection(baseOffset: 35, extentOffset: 35),
      );

      // The selection menu is not present.
      expect(find.byType(CupertinoButton), findsNWidgets(0));

      await gesture.up();
      await tester.pump();

      // Still nothing selected and no selection menu.
      expect(
        controller.selection,
        const TextSelection(baseOffset: 35, extentOffset: 35),
      );
      expect(find.byType(CupertinoButton), findsNWidgets(0));
    },
  );

  testWidgets(
    'A read-only obscured CupertinoTextField is not selectable',
        (WidgetTester tester) async {
      final TextEditingController controller = TextEditingController(
        text: 'Atwater Peel Sherbrooke Bonaventure',
      );
      await tester.pumpWidget(
        CupertinoApp(
          home: Center(
            child: CupertinoTextField(
              controller: controller,
              obscureText: true,
              readOnly: true,
            ),
          ),
        ),
      );

      final Offset textFieldStart = tester.getTopLeft(find.byType(CupertinoTextField));

      await tester.tapAt(textFieldStart + const Offset(150.0, 5.0));
      await tester.pump(const Duration(milliseconds: 50));
      final TestGesture gesture =
      await tester.startGesture(textFieldStart + const Offset(150.0, 5.0));
      // Hold the press.
      await tester.pump(const Duration(milliseconds: 500));

      // Nothing is selected despite the double tap long press gesture.
      expect(
        controller.selection,
        const TextSelection(baseOffset: 35, extentOffset: 35),
      );

      // The selection menu is not present.
      expect(find.byType(CupertinoButton), findsNWidgets(0));

      await gesture.up();
      await tester.pump();

      // Still nothing selected and no selection menu.
      expect(
        controller.selection,
        const TextSelection.collapsed(offset: 35),
      );
      expect(find.byType(CupertinoButton), findsNWidgets(0));
    },
  );

  testWidgets(
    'An obscured CupertinoTextField is selectable by default',
    (WidgetTester tester) async {
      final TextEditingController controller = TextEditingController(
        text: 'Atwater Peel Sherbrooke Bonaventure',
      );
      await tester.pumpWidget(
        CupertinoApp(
          home: Center(
            child: CupertinoTextField(
              controller: controller,
              obscureText: true,
            ),
          ),
        ),
      );

      final Offset textFieldStart = tester.getTopLeft(find.byType(CupertinoTextField));

      await tester.tapAt(textFieldStart + const Offset(150.0, 5.0));
      await tester.pump(const Duration(milliseconds: 50));
      final TestGesture gesture =
         await tester.startGesture(textFieldStart + const Offset(150.0, 5.0));
      // Hold the press.
      await tester.pumpAndSettle();

      // The obscured text is treated as one word, should select all
      expect(
        controller.selection,
        const TextSelection(baseOffset: 0, extentOffset: 35),
      );

      // Selected text shows paste toolbar buttons.
      expect(find.byType(CupertinoButton), isContextMenuProvidedByPlatform ? findsNothing : findsNWidgets(1));

      await gesture.up();
      await tester.pump();

      // Still selected.
      expect(
        controller.selection,
        const TextSelection(baseOffset: 0, extentOffset: 35),
      );
      expect(find.byType(CupertinoButton), isContextMenuProvidedByPlatform ? findsNothing : findsNWidgets(1));
    },
  );

  testWidgets('An obscured TextField has correct default context menu', (WidgetTester tester) async {
    final TextEditingController controller = TextEditingController(
      text: 'Atwater Peel Sherbrooke Bonaventure',
    );

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

    final Offset textFieldStart = tester.getCenter(find.byType(CupertinoTextField));

    await tester.tapAt(textFieldStart + const Offset(150.0, 5.0));
    await tester.pump(const Duration(milliseconds: 50));
    await tester.longPressAt(textFieldStart + const Offset(150.0, 5.0));
    await tester.pump();

    // Should only have paste option when whole obscure text is selected.
    expect(find.text('Paste'), findsOneWidget);
    expect(find.text('Copy'), findsNothing);
    expect(find.text('Cut'), findsNothing);
    expect(find.text('Select All'), findsNothing);

    // Tap to cancel selection.
    final Offset textFieldEnd = tester.getTopRight(find.byType(CupertinoTextField));
    await tester.tapAt(textFieldEnd + const Offset(-10.0, 5.0));
    await tester.pump(const Duration(milliseconds: 50));
    // Long tap at the end.
    await tester.longPressAt(textFieldEnd + const Offset(-10.0, 5.0));
    await tester.pump();

    // Should have paste and select all options when collapse.
    expect(find.text('Paste'), findsOneWidget);
    expect(find.text('Select All'), findsOneWidget);
    expect(find.text('Copy'), findsNothing);
    expect(find.text('Cut'), findsNothing);
  }, skip: isContextMenuProvidedByPlatform); // [intended] only applies to platforms where we supply the context menu.

  testWidgets(
    'long press moves cursor to the exact long press position and shows toolbar',
    (WidgetTester tester) async {
      final TextEditingController controller = TextEditingController(
        text: 'Atwater Peel Sherbrooke Bonaventure',
      );
      await tester.pumpWidget(
        CupertinoApp(
          home: Center(
            child: CupertinoTextField(
              controller: controller,
            ),
          ),
        ),
      );

      final Offset textFieldStart = tester.getTopLeft(find.byType(CupertinoTextField));

      await tester.longPressAt(textFieldStart + const Offset(50.0, 5.0));
      await tester.pumpAndSettle();

      // Collapsed cursor for iOS long press.
      expect(
        controller.selection,
        const TextSelection.collapsed(offset: 3, affinity: TextAffinity.upstream),
      );

      // Collapsed toolbar shows 2 buttons.
      expect(find.byType(CupertinoButton), isContextMenuProvidedByPlatform ? findsNothing : findsNWidgets(2));
    },
  );

  testWidgets(
    'long press tap cannot initiate a double tap',
    (WidgetTester tester) async {
      final TextEditingController controller = TextEditingController(
        text: 'Atwater Peel Sherbrooke Bonaventure',
      );
      // On iOS/iPadOS, during a tap we select the edge of the word closest to the tap.
      // On macOS, we select the precise position of the tap.
      final bool isTargetPlatformMobile = defaultTargetPlatform == TargetPlatform.iOS;
      await tester.pumpWidget(
        CupertinoApp(
          home: Center(
            child: CupertinoTextField(
              controller: controller,
            ),
          ),
        ),
      );

      final Offset ePos = textOffsetToPosition(tester, 6); // Index of 'Atwate|r'

      await tester.longPressAt(ePos);
      await tester.pump(const Duration(milliseconds: 50));

      await tester.tapAt(ePos);
      await tester.pump();

      // We ended up moving the cursor to the edge of the same word and dismissed
      // the toolbar.
      expect(controller.selection.isCollapsed, isTrue);
      expect(controller.selection.baseOffset, isTargetPlatformMobile ? 7 : 6);

      // The toolbar from the long press is now dismissed by the second tap.
      expect(find.byType(CupertinoButton), findsNothing);
  }, variant: const TargetPlatformVariant(<TargetPlatform>{ TargetPlatform.iOS,  TargetPlatform.macOS }));

  testWidgets(
    'long press drag moves the cursor under the drag and shows toolbar on lift',
    (WidgetTester tester) async {
      final TextEditingController controller = TextEditingController(
        text: 'Atwater Peel Sherbrooke Bonaventure',
      );
      await tester.pumpWidget(
        CupertinoApp(
          home: Center(
            child: CupertinoTextField(
              controller: controller,
            ),
          ),
        ),
      );

      final Offset textFieldStart = tester.getTopLeft(find.byType(CupertinoTextField));

      final TestGesture gesture =
          await tester.startGesture(textFieldStart + const Offset(50.0, 5.0));
      await tester.pump(const Duration(milliseconds: 500));

      // Long press on iOS shows collapsed selection cursor.
      expect(
        controller.selection,
        const TextSelection.collapsed(offset: 3, affinity: TextAffinity.upstream),
      );
      // Toolbar only shows up on long press up.
      expect(find.byType(CupertinoButton), findsNothing);

      await gesture.moveBy(const Offset(50, 0));
      await tester.pump();

      // The selection position is now moved with the drag.
      expect(
        controller.selection,
        const TextSelection.collapsed(offset: 6, affinity: TextAffinity.upstream),
      );
      expect(find.byType(CupertinoButton), findsNothing);

      await gesture.moveBy(const Offset(50, 0));
      await tester.pump();

      // The selection position is now moved with the drag.
      expect(
        controller.selection,
        const TextSelection.collapsed(offset: 9, affinity: TextAffinity.upstream),
      );
      expect(find.byType(CupertinoButton), findsNothing);

      await gesture.up();
      await tester.pumpAndSettle();

      // The selection isn't affected by the gesture lift.
      expect(
        controller.selection,
        const TextSelection.collapsed(offset: 9, affinity: TextAffinity.upstream),
      );
      // The toolbar now shows up.
      expect(find.byType(CupertinoButton), isContextMenuProvidedByPlatform ? findsNothing : findsNWidgets(2));
    },
  );

  testWidgets('long press drag can edge scroll', (WidgetTester tester) async {
    final TextEditingController controller = TextEditingController(
      text: 'Atwater Peel Sherbrooke Bonaventure Angrignon Peel Côte-des-Neiges',
    );
    await tester.pumpWidget(
      CupertinoApp(
        home: Center(
          child: CupertinoTextField(
            controller: controller,
          ),
        ),
      ),
    );

    final RenderEditable renderEditable = tester.renderObject<RenderEditable>(
      find.byElementPredicate((Element element) => element.renderObject is RenderEditable).last,
    );

    List<TextSelectionPoint> lastCharEndpoint = renderEditable.getEndpointsForSelection(
      const TextSelection.collapsed(offset: 66), // Last character's position.
    );

    expect(lastCharEndpoint.length, 1);
    // Just testing the test and making sure that the last character is off
    // the right side of the screen.
    expect(lastCharEndpoint[0].point.dx, moreOrLessEquals(1094.73, epsilon: 0.25));

    final Offset textFieldStart = tester.getTopLeft(find.byType(CupertinoTextField));

    final TestGesture gesture =
        await tester.startGesture(textFieldStart + const Offset(300, 5));
    await tester.pump(const Duration(milliseconds: 500));

    expect(
      controller.selection,
      const TextSelection.collapsed(offset: 18, affinity: TextAffinity.upstream),
    );
    expect(find.byType(CupertinoButton), findsNothing);

    await gesture.moveBy(const Offset(600, 0));
    // To the edge of the screen basically.
    await tester.pump();
    expect(
      controller.selection,
      const TextSelection.collapsed(offset: 54, affinity: TextAffinity.upstream),
    );
    // Keep moving out.
    await gesture.moveBy(const Offset(1, 0));
    await tester.pump();
    expect(
      controller.selection,
      const TextSelection.collapsed(offset: 61, affinity: TextAffinity.upstream),
    );
    await gesture.moveBy(const Offset(1, 0));
    await tester.pump();
    expect(
      controller.selection,
      const TextSelection.collapsed(offset: 66, affinity: TextAffinity.upstream),
    ); // We're at the edge now.
    expect(find.byType(CupertinoButton), findsNothing);

    await gesture.up();
    await tester.pumpAndSettle();

    // The selection isn't affected by the gesture lift.
    expect(
      controller.selection,
      const TextSelection.collapsed(offset: 66, affinity: TextAffinity.upstream),
    );
    // The toolbar now shows up.
    expect(find.byType(CupertinoButton), isContextMenuProvidedByPlatform ? findsNothing : findsNWidgets(2));

    lastCharEndpoint = renderEditable.getEndpointsForSelection(
      const TextSelection.collapsed(offset: 66), // Last character's position.
    );

    expect(lastCharEndpoint.length, 1);
    // The last character is now on screen.
    expect(lastCharEndpoint[0].point.dx, moreOrLessEquals(786.73, epsilon: 0.25));

    final List<TextSelectionPoint> firstCharEndpoint = renderEditable.getEndpointsForSelection(
      const TextSelection.collapsed(offset: 0), // First character's position.
    );
    expect(firstCharEndpoint.length, 1);
    // The first character is now offscreen to the left.
    expect(firstCharEndpoint[0].point.dx, moreOrLessEquals(-308.20, epsilon: 0.25));
  }, variant: const TargetPlatformVariant(<TargetPlatform>{ TargetPlatform.iOS,  TargetPlatform.macOS }));

  testWidgets(
    'long tap after a double tap select is not affected',
    (WidgetTester tester) async {
      final TextEditingController controller = TextEditingController(
        text: 'Atwater Peel Sherbrooke Bonaventure',
      );
      // On iOS/iPadOS, during a tap we select the edge of the word closest to the tap.
      // On macOS, we select the precise position of the tap.
      final bool isTargetPlatformMobile = defaultTargetPlatform == TargetPlatform.iOS;
      await tester.pumpWidget(
        CupertinoApp(
          home: Center(
            child: CupertinoTextField(
              controller: controller,
            ),
          ),
        ),
      );

      final Offset pPos = textOffsetToPosition(tester, 9); // Index of 'P|eel'
      final Offset ePos = textOffsetToPosition(tester, 6); // Index of 'Atwate|r'

      await tester.tapAt(pPos);
      await tester.pump(const Duration(milliseconds: 50));
      // First tap moved the cursor to the beginning of the second word.
      expect(controller.selection.isCollapsed, isTrue);
      expect(controller.selection.baseOffset, isTargetPlatformMobile ? 8 : 9);
      await tester.tapAt(pPos);
      await tester.pump(const Duration(milliseconds: 500));

      await tester.longPressAt(ePos);
      await tester.pumpAndSettle();

      // Plain collapsed selection at the exact tap position.
      expect(
        controller.selection,
        const TextSelection.collapsed(offset: 6),
      );

      // Long press toolbar.
      expect(find.byType(CupertinoButton), isContextMenuProvidedByPlatform ? findsNothing : findsNWidgets(2));
  }, variant: const TargetPlatformVariant(<TargetPlatform>{ TargetPlatform.iOS,  TargetPlatform.macOS }));

  testWidgets(
    'double tap after a long tap is not affected',
    (WidgetTester tester) async {
      final TextEditingController controller = TextEditingController(
        text: 'Atwater Peel Sherbrooke Bonaventure',
      );
      // On iOS/iPadOS, during a tap we select the edge of the word closest to the tap.
      // On macOS, we select the precise position of the tap.
      final bool isTargetPlatformMobile = defaultTargetPlatform == TargetPlatform.iOS;
      await tester.pumpWidget(
        CupertinoApp(
          home: Center(
            child: CupertinoTextField(
              controller: controller,
            ),
          ),
        ),
      );

      final Offset pPos = textOffsetToPosition(tester, 9); // Index of 'P|eel'
      final Offset wPos = textOffsetToPosition(tester, 3); // Index of 'Atw|ater'

      await tester.longPressAt(wPos);
      await tester.pump(const Duration(milliseconds: 50));

      await tester.tapAt(pPos);
      await tester.pump(const Duration(milliseconds: 50));
      // First tap moved the cursor.
      expect(controller.selection.isCollapsed, isTrue);
      expect(controller.selection.baseOffset, isTargetPlatformMobile ? 8 : 9);
      await tester.tapAt(pPos);
      await tester.pumpAndSettle();

      // Double tap selection.
      expect(
        controller.selection,
        const TextSelection(baseOffset: 8, extentOffset: 12),
      );
      // Shows toolbar.
      expect(find.byType(CupertinoButton), isContextMenuProvidedByPlatform ? findsNothing : findsNWidgets(3));
  }, variant: const TargetPlatformVariant(<TargetPlatform>{ TargetPlatform.iOS,  TargetPlatform.macOS }));

  testWidgets(
    'double tap chains work',
    (WidgetTester tester) async {
      final TextEditingController controller = TextEditingController(
        text: 'Atwater Peel Sherbrooke Bonaventure',
      );
      await tester.pumpWidget(
        CupertinoApp(
          home: Center(
            child: CupertinoTextField(
              controller: controller,
            ),
          ),
        ),
      );

      final Offset textFieldStart = tester.getTopLeft(find.byType(CupertinoTextField));

      await tester.tapAt(textFieldStart + const Offset(50.0, 5.0));
      await tester.pump(const Duration(milliseconds: 50));
      expect(
        controller.selection,
        const TextSelection.collapsed(offset: 7, affinity: TextAffinity.upstream),
      );
      await tester.tapAt(textFieldStart + const Offset(50.0, 5.0));
      await tester.pumpAndSettle();
      expect(
        controller.selection,
        const TextSelection(baseOffset: 0, extentOffset: 7),
      );
      expect(find.byType(CupertinoButton), isContextMenuProvidedByPlatform ? findsNothing : findsNWidgets(3));

      // Double tap selecting the same word somewhere else is fine.
      await tester.tapAt(textFieldStart + const Offset(100.0, 5.0));
      await tester.pump(const Duration(milliseconds: 50));
      // First tap moved the cursor.
      expect(
        controller.selection,
        const TextSelection.collapsed(offset: 7, affinity: TextAffinity.upstream),
      );
      await tester.tapAt(textFieldStart + const Offset(100.0, 5.0));
      await tester.pumpAndSettle();
      expect(
        controller.selection,
        const TextSelection(baseOffset: 0, extentOffset: 7),
      );
      expect(find.byType(CupertinoButton), isContextMenuProvidedByPlatform ? findsNothing : findsNWidgets(3));

      await tester.tapAt(textFieldStart + const Offset(150.0, 5.0));
      await tester.pump(const Duration(milliseconds: 50));
      // First tap moved the cursor.
      expect(
        controller.selection,
        const TextSelection.collapsed(offset: 8),
      );
      await tester.tapAt(textFieldStart + const Offset(150.0, 5.0));
      await tester.pumpAndSettle();
      expect(
        controller.selection,
        const TextSelection(baseOffset: 8, extentOffset: 12),
      );
      expect(find.byType(CupertinoButton), isContextMenuProvidedByPlatform ? findsNothing : findsNWidgets(3));
  }, variant: const TargetPlatformVariant(<TargetPlatform>{ TargetPlatform.iOS }));

  testWidgets('force press selects word', (WidgetTester tester) async {
    final TextEditingController controller = TextEditingController(
      text: 'Atwater Peel Sherbrooke Bonaventure',
    );
    await tester.pumpWidget(
      CupertinoApp(
        home: Center(
          child: CupertinoTextField(
            controller: controller,
          ),
        ),
      ),
    );

    final Offset textFieldStart = tester.getTopLeft(find.byType(CupertinoTextField));

    final int pointerValue = tester.nextPointer;
    final TestGesture gesture = await tester.createGesture();
    await gesture.downWithCustomEvent(
      textFieldStart + const Offset(150.0, 5.0),
      PointerDownEvent(
        pointer: pointerValue,
        position: textFieldStart + const Offset(150.0, 5.0),
        pressure: 3.0,
        pressureMax: 6.0,
        pressureMin: 0.0,
      ),
    );
    // We expect the force press to select a word at the given location.
    expect(
      controller.selection,
      const TextSelection(baseOffset: 8, extentOffset: 12),
    );

    await gesture.up();
    await tester.pumpAndSettle();
    // Shows toolbar.
    expect(find.byType(CupertinoButton), isContextMenuProvidedByPlatform ? findsNothing : findsNWidgets(3));
  });

  testWidgets('force press on unsupported devices falls back to tap', (WidgetTester tester) async {
    final TextEditingController controller = TextEditingController(
      text: 'Atwater Peel Sherbrooke Bonaventure',
    );
    // On iOS/iPadOS, during a tap we select the edge of the word closest to the tap.
    // On macOS, we select the precise position of the tap.
    final bool isTargetPlatformMobile = defaultTargetPlatform == TargetPlatform.iOS;
    await tester.pumpWidget(
      CupertinoApp(
        home: Center(
          child: CupertinoTextField(
            controller: controller,
          ),
        ),
      ),
    );

    final Offset pPos = textOffsetToPosition(tester, 9); // Index of 'P|eel'

    final int pointerValue = tester.nextPointer;
    final TestGesture gesture = await tester.createGesture();
    await gesture.downWithCustomEvent(
      pPos,
      PointerDownEvent(
        pointer: pointerValue,
        position: pPos,
        // iPhone 6 and below report 0 across the board.
        pressure: 0,
        pressureMax: 0,
        pressureMin: 0,
      ),
    );
    await gesture.up();
    // Fall back to a single tap which selects the edge of the word on iOS, and
    // a precise position on macOS.
    expect(controller.selection.isCollapsed, isTrue);
    expect(controller.selection.baseOffset, isTargetPlatformMobile ? 8 : 9);

    await tester.pump();
    // Falling back to a single tap doesn't trigger a toolbar.
    expect(find.byType(CupertinoButton), findsNothing);
  }, variant: const TargetPlatformVariant(<TargetPlatform>{ TargetPlatform.iOS,  TargetPlatform.macOS }));

  testWidgets('Cannot drag one handle past the other', (WidgetTester tester) async {
    final TextEditingController controller = TextEditingController(
      text: 'abc def ghi',
    );
    // On iOS/iPadOS, during a tap we select the edge of the word closest to the tap.
    // On macOS, we select the precise position of the tap.
    final bool isTargetPlatformMobile = defaultTargetPlatform == TargetPlatform.iOS;

    await tester.pumpWidget(
      CupertinoApp(
        home: Center(
          child: CupertinoTextField(
            dragStartBehavior: DragStartBehavior.down,
            controller: controller,
            style: const TextStyle(
              fontFamily: 'Ahem',
              fontSize: 10.0,
            ),
          ),
        ),
      ),
    );

    // Double tap on 'e' to select 'def'.
    final Offset ePos = textOffsetToPosition(tester, 5);
    await tester.tapAt(ePos, pointer: 7);
    await tester.pump(const Duration(milliseconds: 50));
    expect(controller.selection.isCollapsed, isTrue);
    expect(controller.selection.baseOffset, isTargetPlatformMobile ? 4 : 5);
    await tester.tapAt(ePos, pointer: 7);
    await tester.pumpAndSettle();
    expect(controller.selection.baseOffset, 4);
    expect(controller.selection.extentOffset, 7);

    final RenderEditable renderEditable = findRenderEditable(tester);
    final List<TextSelectionPoint> endpoints = globalize(
      renderEditable.getEndpointsForSelection(controller.selection),
      renderEditable,
    );
    expect(endpoints.length, 2);

    // Drag the right handle until there's only 1 char selected.
    // We use a small offset because the endpoint is on the very corner
    // of the handle.
    final Offset handlePos = endpoints[1].point;
    Offset newHandlePos = textOffsetToPosition(tester, 5); // Position of 'e'.
    final TestGesture gesture = await tester.startGesture(handlePos, pointer: 7);
    await tester.pump();
    await gesture.moveTo(newHandlePos);
    await tester.pump();
    expect(controller.selection.baseOffset, 4);
    expect(controller.selection.extentOffset, 5);

    newHandlePos = textOffsetToPosition(tester, 2); // Position of 'c'.
    await gesture.moveTo(newHandlePos);
    await tester.pump();
    await gesture.up();
    await tester.pump();

    expect(controller.selection.baseOffset, 4);
    // The selection doesn't move beyond the left handle. There's always at
    // least 1 char selected.
    expect(controller.selection.extentOffset, 5);
  }, variant: const TargetPlatformVariant(<TargetPlatform>{ TargetPlatform.iOS, TargetPlatform.macOS }));

  testWidgets('Selection updates on tap down (Desktop platforms)', (WidgetTester tester) async {
    final TextEditingController controller = TextEditingController();

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

    const String testValue = 'abc def ghi';
    await tester.enterText(find.byType(CupertinoTextField), testValue);
    // Skip past scrolling animation.
    await tester.pump();
    await tester.pump(const Duration(milliseconds: 200));

    final Offset ePos = textOffsetToPosition(tester, 5);
    final Offset gPos = textOffsetToPosition(tester, 8);

    final TestGesture gesture = await tester.startGesture(ePos, kind: PointerDeviceKind.mouse);
    await tester.pumpAndSettle();
    expect(controller.selection.baseOffset, 5);
    expect(controller.selection.extentOffset, 5);

    await gesture.up();
    await tester.pumpAndSettle(kDoubleTapTimeout);

    await gesture.down(gPos);
    await tester.pumpAndSettle();
    expect(controller.selection.baseOffset, 8);
    expect(controller.selection.extentOffset, 8);

    // This should do nothing. The selection is set on tap down on desktop platforms.
    await gesture.up();
    expect(controller.selection.baseOffset, 8);
    expect(controller.selection.extentOffset, 8);
  },
      variant: TargetPlatformVariant.desktop(),
  );

  testWidgets('Selection updates on tap up (Mobile platforms)', (WidgetTester tester) async {
    final TextEditingController controller = TextEditingController();
    final bool isTargetPlatformApple = defaultTargetPlatform == TargetPlatform.iOS;

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

    const String testValue = 'abc def ghi';
    await tester.enterText(find.byType(CupertinoTextField), testValue);
    // Skip past scrolling animation.
    await tester.pump();
    await tester.pump(const Duration(milliseconds: 200));

    final Offset ePos = textOffsetToPosition(tester, 5);
    final Offset gPos = textOffsetToPosition(tester, 8);

    final TestGesture gesture = await tester.startGesture(ePos, kind: PointerDeviceKind.mouse);
    await gesture.up();
    await tester.pumpAndSettle(kDoubleTapTimeout);

    await gesture.down(gPos);
    await tester.pumpAndSettle();
    expect(controller.selection.baseOffset, 5);
    expect(controller.selection.extentOffset, 5);

    await gesture.up();
    await tester.pumpAndSettle(kDoubleTapTimeout);
    expect(controller.selection.baseOffset, 8);
    expect(controller.selection.extentOffset, 8);

    final TestGesture touchGesture = await tester.startGesture(ePos);
    await touchGesture.up();
    await tester.pumpAndSettle(kDoubleTapTimeout);
    // On iOS, a tap to select, selects the word edge instead of the exact tap position.
    expect(controller.selection.baseOffset, isTargetPlatformApple ? 4 : 5);
    expect(controller.selection.extentOffset, isTargetPlatformApple ? 4 : 5);

    // Selection should stay the same since it is set on tap up for mobile platforms.
    await touchGesture.down(gPos);
    await tester.pump();
    expect(controller.selection.baseOffset, isTargetPlatformApple ? 4 : 5);
    expect(controller.selection.extentOffset, isTargetPlatformApple ? 4 : 5);

    await touchGesture.up();
    await tester.pumpAndSettle();
    expect(controller.selection.baseOffset, 8);
    expect(controller.selection.extentOffset, 8);
  },
      variant: TargetPlatformVariant.mobile(),
  );

  testWidgets('Can select text by dragging with a mouse', (WidgetTester tester) async {
    final TextEditingController controller = TextEditingController();

    await tester.pumpWidget(
      CupertinoApp(
        home: Center(
          child: CupertinoTextField(
            dragStartBehavior: DragStartBehavior.down,
            controller: controller,
            style: const TextStyle(
              fontFamily: 'Ahem',
              fontSize: 10.0,
            ),
          ),
        ),
      ),
    );

    const String testValue = 'abc def ghi';
    await tester.enterText(find.byType(CupertinoTextField), testValue);
    // Skip past scrolling animation.
    await tester.pump();
    await tester.pump(const Duration(milliseconds: 200));

    final Offset ePos = textOffsetToPosition(tester, testValue.indexOf('e'));
    final Offset gPos = textOffsetToPosition(tester, testValue.indexOf('g'));

    final TestGesture gesture = await tester.startGesture(ePos, kind: PointerDeviceKind.mouse);
    await tester.pump();