packages/flutter/test/material/ink_paint_test.dart - mirrors/flutter - Git at Google

 // 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.

 import 'package:flutter/material.dart';
 import 'package:flutter/services.dart';
 import 'package:flutter_test/flutter_test.dart';

 import '../rendering/mock_canvas.dart';

 void main() {
   testWidgets('The Ink widget renders a SizedBox by default', (WidgetTester tester) async {
     await tester.pumpWidget(
       Material(
         child: Ink(),
       ),
     );
     Finder sizedBox = find.descendant(
       of: find.byType(Ink),
       matching: find.byType(SizedBox),
     );
     expect(sizedBox, findsOneWidget);
     expect(tester.getSize(sizedBox).height, 600.0);
     expect(tester.getSize(sizedBox).width, 800.0);

     const double height = 150.0;
     const double width = 200.0;
     await tester.pumpWidget(
       Material(
         child: Center( // used to constrain to child's size
           child: Ink(
             height: height,
             width: width,
           ),
         ),
       ),
     );
     await tester.pumpAndSettle();
     sizedBox = find.descendant(
       of: find.byType(Ink),
       matching: find.byType(SizedBox),
     );
     expect(sizedBox, findsNWidgets(2));
     expect(tester.getSize(sizedBox.at(0)).height, height);
     expect(tester.getSize(sizedBox.at(0)).width, width);
   });

   testWidgets('The InkWell widget renders an ink splash', (WidgetTester tester) async {
     const Color highlightColor = Color(0xAAFF0000);
     const Color splashColor = Color(0xAA0000FF);
     const BorderRadius borderRadius = BorderRadius.all(Radius.circular(6.0));

     await tester.pumpWidget(
       Directionality(
         textDirection: TextDirection.ltr,
         child: Material(
           child: Center(
             child: SizedBox(
               width: 200.0,
               height: 60.0,
               child: InkWell(
                 borderRadius: borderRadius,
                 highlightColor: highlightColor,
                 splashColor: splashColor,
                 onTap: () { },
               ),
             ),
           ),
         ),
       ),
     );

     final Offset center = tester.getCenter(find.byType(InkWell));
     final TestGesture gesture = await tester.startGesture(center);
     await tester.pump(); // start gesture
     await tester.pump(const Duration(milliseconds: 200)); // wait for splash to be well under way

     final RenderBox box = Material.of(tester.element(find.byType(InkWell)))! as RenderBox;
     expect(
       box,
       paints
         ..translate(x: 0.0, y: 0.0)
         ..save()
         ..translate(x: 300.0, y: 270.0)
         ..clipRRect(rrect: RRect.fromLTRBR(0.0, 0.0, 200.0, 60.0, const Radius.circular(6.0)))
         ..circle(x: 100.0, y: 30.0, radius: 21.0, color: splashColor)
         ..restore()
         ..rrect(
           rrect: RRect.fromLTRBR(300.0, 270.0, 500.0, 330.0, const Radius.circular(6.0)),
           color: highlightColor,
         ),
     );

     await gesture.up();
   });

   testWidgets('The InkWell widget renders an ink ripple', (WidgetTester tester) async {
     const Color highlightColor = Color(0xAAFF0000);
     const Color splashColor = Color(0xB40000FF);
     const BorderRadius borderRadius = BorderRadius.all(Radius.circular(6.0));

     await tester.pumpWidget(
       Directionality(
         textDirection: TextDirection.ltr,
         child: Material(
           child: Center(
             child: SizedBox(
               width: 100.0,
               height: 100.0,
               child: InkWell(
                 borderRadius: borderRadius,
                 highlightColor: highlightColor,
                 splashColor: splashColor,
                 onTap: () { },
                 radius: 100.0,
                 splashFactory: InkRipple.splashFactory,
               ),
             ),
           ),
         ),
       ),
     );

     final Offset tapDownOffset = tester.getTopLeft(find.byType(InkWell));
     final Offset inkWellCenter = tester.getCenter(find.byType(InkWell));
     //final TestGesture gesture = await tester.startGesture(tapDownOffset);
     await tester.tapAt(tapDownOffset);
     await tester.pump(); // start gesture

     final RenderBox box = Material.of(tester.element(find.byType(InkWell)))! as RenderBox;

     bool offsetsAreClose(Offset a, Offset b) => (a - b).distance < 1.0;
     bool radiiAreClose(double a, double b) => (a - b).abs() < 1.0;

     PaintPattern ripplePattern(Offset expectedCenter, double expectedRadius, int expectedAlpha) {
       return paints
         ..translate(x: 0.0, y: 0.0)
         ..translate(x: tapDownOffset.dx, y: tapDownOffset.dy)
         ..something((Symbol method, List<dynamic> arguments) {
           if (method != #drawCircle) {
             return false;
           }
           final Offset center = arguments[0] as Offset;
           final double radius = arguments[1] as double;
           final Paint paint = arguments[2] as Paint;
           if (offsetsAreClose(center, expectedCenter) && radiiAreClose(radius, expectedRadius) && paint.color.alpha == expectedAlpha) {
             return true;
           }
           throw '''
             Expected: center == $expectedCenter, radius == $expectedRadius, alpha == $expectedAlpha
             Found: center == $center radius == $radius alpha == ${paint.color.alpha}''';
         }
       );
     }

     // Initially the ripple's center is where the tap occurred;
     // ripplePattern always add a translation of tapDownOffset.
     expect(box, ripplePattern(Offset.zero, 30.0, 0));

     // The ripple fades in for 75ms. During that time its alpha is eased from
     // 0 to the splashColor's alpha value and its center moves towards the
     // center of the ink well.
     await tester.pump(const Duration(milliseconds: 50));
     expect(box, ripplePattern(const Offset(17.0, 17.0), 56.0, 120));

     // At 75ms the ripple has fade in: it's alpha matches the splashColor's
     // alpha and its center has moved closer to the ink well's center.
     await tester.pump(const Duration(milliseconds: 25));
     expect(box, ripplePattern(const Offset(29.0, 29.0), 73.0, 180));

     // At this point the splash radius has expanded to its limit: 5 past the
     // ink well's radius parameter. The splash center has moved to its final
     // location at the inkwell's center and the fade-out is about to start.
     // The fade-out begins at 225ms = 50ms + 25ms + 150ms.
     await tester.pump(const Duration(milliseconds: 150));
     expect(box, ripplePattern(inkWellCenter - tapDownOffset, 105.0, 180));

     // After another 150ms the fade-out is complete.
     await tester.pump(const Duration(milliseconds: 150));
     expect(box, ripplePattern(inkWellCenter - tapDownOffset, 105.0, 0));
   });

   testWidgets('Does the Ink widget render anything', (WidgetTester tester) async {
     await tester.pumpWidget(
       Directionality(
         textDirection: TextDirection.ltr,
         child: Material(
           child: Center(
             child: Ink(
               color: Colors.blue,
               width: 200.0,
               height: 200.0,
               child: InkWell(
                 splashColor: Colors.green,
                 onTap: () { },
               ),
             ),
           ),
         ),
       ),
     );

     final Offset center = tester.getCenter(find.byType(InkWell));
     final TestGesture gesture = await tester.startGesture(center);
     await tester.pump(); // start gesture
     await tester.pump(const Duration(milliseconds: 200)); // wait for splash to be well under way

     final RenderBox box = Material.of(tester.element(find.byType(InkWell)))! as RenderBox;
     expect(
       box,
       paints
         ..rect(rect: const Rect.fromLTRB(300.0, 200.0, 500.0, 400.0), color: Color(Colors.blue.value))
         ..circle(color: Color(Colors.green.value)),
     );

     await tester.pumpWidget(
       Directionality(
         textDirection: TextDirection.ltr,
         child: Material(
           child: Center(
             child: Ink(
               color: Colors.red,
               width: 200.0,
               height: 200.0,
               child: InkWell(
                 splashColor: Colors.green,
                 onTap: () { },
               ),
             ),
           ),
         ),
       ),
     );

     expect(Material.of(tester.element(find.byType(InkWell))), same(box));

     expect(
       box,
       paints
         ..rect(rect: const Rect.fromLTRB(300.0, 200.0, 500.0, 400.0), color: Color(Colors.red.value))
         ..circle(color: Color(Colors.green.value)),
     );

     await tester.pumpWidget(
       Directionality(
         textDirection: TextDirection.ltr,
         child: Material(
           child: Center(
             child: InkWell( // this is at a different depth in the tree so it's now a new InkWell
               splashColor: Colors.green,
               onTap: () { },
             ),
           ),
         ),
       ),
     );

     expect(Material.of(tester.element(find.byType(InkWell))), same(box));

     expect(box, isNot(paints..rect()));
     expect(box, isNot(paints..circle()));

     await gesture.up();
   });

   testWidgets('The InkWell widget renders an SelectAction or ActivateAction-induced ink ripple', (WidgetTester tester) async {
     const Color highlightColor = Color(0xAAFF0000);
     const Color splashColor = Color(0xB40000FF);
     const BorderRadius borderRadius = BorderRadius.all(Radius.circular(6.0));

     final FocusNode focusNode = FocusNode(debugLabel: 'Test Node');
     Future<void> buildTest(Intent intent) async {
       return tester.pumpWidget(
         Shortcuts(
           shortcuts: <ShortcutActivator, Intent>{
             const SingleActivator(LogicalKeyboardKey.space): intent,
           },
           child: Directionality(
             textDirection: TextDirection.ltr,
             child: Material(
               child: Center(
                 child: SizedBox(
                   width: 100.0,
                   height: 100.0,
                   child: InkWell(
                     borderRadius: borderRadius,
                     highlightColor: highlightColor,
                     splashColor: splashColor,
                     focusNode: focusNode,
                     onTap: () { },
                     radius: 100.0,
                     splashFactory: InkRipple.splashFactory,
                   ),
                 ),
               ),
             ),
           ),
         ),
       );
     }

     await buildTest(const ActivateIntent());
     focusNode.requestFocus();
     await tester.pumpAndSettle();

     final Offset topLeft = tester.getTopLeft(find.byType(InkWell));
     final Offset inkWellCenter = tester.getCenter(find.byType(InkWell)) - topLeft;

     bool offsetsAreClose(Offset a, Offset b) => (a - b).distance < 1.0;
     bool radiiAreClose(double a, double b) => (a - b).abs() < 1.0;

     PaintPattern ripplePattern(double expectedRadius, int expectedAlpha) {
       return paints
         ..translate(x: 0.0, y: 0.0)
         ..translate(x: topLeft.dx, y: topLeft.dy)
         ..something((Symbol method, List<dynamic> arguments) {
           if (method != #drawCircle) {
             return false;
           }
           final Offset center = arguments[0] as Offset;
           final double radius = arguments[1] as double;
           final Paint paint = arguments[2] as Paint;
           if (offsetsAreClose(center, inkWellCenter) &&
               radiiAreClose(radius, expectedRadius) &&
               paint.color.alpha == expectedAlpha) {
             return true;
           }
           throw '''
             Expected: center == $inkWellCenter, radius == $expectedRadius, alpha == $expectedAlpha
             Found: center == $center radius == $radius alpha == ${paint.color.alpha}''';
         },
         );
     }

     await buildTest(const ActivateIntent());
     await tester.pumpAndSettle();
     await tester.sendKeyEvent(LogicalKeyboardKey.space);
     await tester.pump();

     final RenderBox box = Material.of(tester.element(find.byType(InkWell)))! as RenderBox;

     // ripplePattern always add a translation of topLeft.
     expect(box, ripplePattern(30.0, 0));

     // The ripple fades in for 75ms. During that time its alpha is eased from
     // 0 to the splashColor's alpha value.
     await tester.pump(const Duration(milliseconds: 50));
     expect(box, ripplePattern(56.0, 120));

     // At 75ms the ripple has faded in: it's alpha matches the splashColor's
     // alpha.
     await tester.pump(const Duration(milliseconds: 25));
     expect(box, ripplePattern(73.0, 180));

     // At this point the splash radius has expanded to its limit: 5 past the
     // ink well's radius parameter. The fade-out is about to start.
     // The fade-out begins at 225ms = 50ms + 25ms + 150ms.
     await tester.pump(const Duration(milliseconds: 150));
     expect(box, ripplePattern(105.0, 180));

     // After another 150ms the fade-out is complete.
     await tester.pump(const Duration(milliseconds: 150));
     expect(box, ripplePattern(105.0, 0));
   });

   testWidgets('Cancel an InkRipple that was disposed when its animation ended', (WidgetTester tester) async {
     // Regression test for https://github.com/flutter/flutter/issues/14391
     await tester.pumpWidget(
       Directionality(
         textDirection: TextDirection.ltr,
         child: Material(
           child: Center(
             child: SizedBox(
               width: 100.0,
               height: 100.0,
               child: InkWell(
                 onTap: () { },
                 radius: 100.0,
                 splashFactory: InkRipple.splashFactory,
               ),
             ),
           ),
         ),
       ),
     );

     final Offset tapDownOffset = tester.getTopLeft(find.byType(InkWell));
     await tester.tapAt(tapDownOffset);
     await tester.pump(); // start splash
     await tester.pump(const Duration(milliseconds: 375)); // _kFadeOutDuration, in_ripple.dart

     final TestGesture gesture = await tester.startGesture(tapDownOffset);
     await tester.pump(); // start gesture
     await gesture.moveTo(Offset.zero);
     await gesture.up(); // generates a tap cancel
     await tester.pumpAndSettle();
   });

   testWidgets('Cancel an InkRipple that was disposed when its animation ended', (WidgetTester tester) async {
     const Color highlightColor = Color(0xAAFF0000);
     const Color splashColor = Color(0xB40000FF);

     // Regression test for https://github.com/flutter/flutter/issues/14391
     await tester.pumpWidget(
       Directionality(
         textDirection: TextDirection.ltr,
         child: Material(
           child: Center(
             child: SizedBox(
               width: 100.0,
               height: 100.0,
               child: InkWell(
                 splashColor: splashColor,
                 highlightColor: highlightColor,
                 onTap: () { },
                 radius: 100.0,
                 splashFactory: InkRipple.splashFactory,
               ),
             ),
           ),
         ),
       ),
     );

     final Offset tapDownOffset = tester.getTopLeft(find.byType(InkWell));
     await tester.tapAt(tapDownOffset);
     await tester.pump(); // start splash
     // No delay here so _fadeInController.value=1.0 (InkRipple.dart)

     // Generate a tap cancel; Will cancel the ink splash before it started
     final TestGesture gesture = await tester.startGesture(tapDownOffset);
     await tester.pump(); // start gesture
     await gesture.moveTo(Offset.zero);
     await gesture.up(); // generates a tap cancel

     final RenderBox box = Material.of(tester.element(find.byType(InkWell)))! as RenderBox;
     expect(box, paints..everything((Symbol method, List<dynamic> arguments) {
       if (method != #drawCircle) {
         return true;
       }
       final Paint paint = arguments[2] as Paint;
       if (paint.color.alpha == 0) {
         return true;
       }
       throw 'Expected: paint.color.alpha == 0, found: ${paint.color.alpha}';
     }));
   });
 }
	// 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.

	import 'package:flutter/material.dart';
	import 'package:flutter/services.dart';
	import 'package:flutter_test/flutter_test.dart';

	import '../rendering/mock_canvas.dart';

	void main() {
	testWidgets('The Ink widget renders a SizedBox by default', (WidgetTester tester) async {
	await tester.pumpWidget(
	Material(
	child: Ink(),
	),
	);
	Finder sizedBox = find.descendant(
	of: find.byType(Ink),
	matching: find.byType(SizedBox),
	);
	expect(sizedBox, findsOneWidget);
	expect(tester.getSize(sizedBox).height, 600.0);
	expect(tester.getSize(sizedBox).width, 800.0);

	const double height = 150.0;
	const double width = 200.0;
	await tester.pumpWidget(
	Material(
	child: Center( // used to constrain to child's size
	child: Ink(
	height: height,
	width: width,
	),
	),
	),
	);
	await tester.pumpAndSettle();
	sizedBox = find.descendant(
	of: find.byType(Ink),
	matching: find.byType(SizedBox),
	);
	expect(sizedBox, findsNWidgets(2));
	expect(tester.getSize(sizedBox.at(0)).height, height);
	expect(tester.getSize(sizedBox.at(0)).width, width);
	});

	testWidgets('The InkWell widget renders an ink splash', (WidgetTester tester) async {
	const Color highlightColor = Color(0xAAFF0000);
	const Color splashColor = Color(0xAA0000FF);
	const BorderRadius borderRadius = BorderRadius.all(Radius.circular(6.0));

	await tester.pumpWidget(
	Directionality(
	textDirection: TextDirection.ltr,
	child: Material(
	child: Center(
	child: SizedBox(
	width: 200.0,
	height: 60.0,
	child: InkWell(
	borderRadius: borderRadius,
	highlightColor: highlightColor,
	splashColor: splashColor,
	onTap: () { },
	),
	),
	),
	),
	),
	);

	final Offset center = tester.getCenter(find.byType(InkWell));
	final TestGesture gesture = await tester.startGesture(center);
	await tester.pump(); // start gesture
	await tester.pump(const Duration(milliseconds: 200)); // wait for splash to be well under way

	final RenderBox box = Material.of(tester.element(find.byType(InkWell)))! as RenderBox;
	expect(
	box,
	paints
	..translate(x: 0.0, y: 0.0)
	..save()
	..translate(x: 300.0, y: 270.0)
	..clipRRect(rrect: RRect.fromLTRBR(0.0, 0.0, 200.0, 60.0, const Radius.circular(6.0)))
	..circle(x: 100.0, y: 30.0, radius: 21.0, color: splashColor)
	..restore()
	..rrect(
	rrect: RRect.fromLTRBR(300.0, 270.0, 500.0, 330.0, const Radius.circular(6.0)),
	color: highlightColor,
	),
	);

	await gesture.up();
	});

	testWidgets('The InkWell widget renders an ink ripple', (WidgetTester tester) async {
	const Color highlightColor = Color(0xAAFF0000);
	const Color splashColor = Color(0xB40000FF);
	const BorderRadius borderRadius = BorderRadius.all(Radius.circular(6.0));

	await tester.pumpWidget(
	Directionality(
	textDirection: TextDirection.ltr,
	child: Material(
	child: Center(
	child: SizedBox(
	width: 100.0,
	height: 100.0,
	child: InkWell(
	borderRadius: borderRadius,
	highlightColor: highlightColor,
	splashColor: splashColor,
	onTap: () { },
	radius: 100.0,
	splashFactory: InkRipple.splashFactory,
	),
	),
	),
	),
	),
	);

	final Offset tapDownOffset = tester.getTopLeft(find.byType(InkWell));
	final Offset inkWellCenter = tester.getCenter(find.byType(InkWell));
	//final TestGesture gesture = await tester.startGesture(tapDownOffset);
	await tester.tapAt(tapDownOffset);
	await tester.pump(); // start gesture

	final RenderBox box = Material.of(tester.element(find.byType(InkWell)))! as RenderBox;

	bool offsetsAreClose(Offset a, Offset b) => (a - b).distance < 1.0;
	bool radiiAreClose(double a, double b) => (a - b).abs() < 1.0;

	PaintPattern ripplePattern(Offset expectedCenter, double expectedRadius, int expectedAlpha) {
	return paints
	..translate(x: 0.0, y: 0.0)
	..translate(x: tapDownOffset.dx, y: tapDownOffset.dy)
	..something((Symbol method, List<dynamic> arguments) {
	if (method != #drawCircle) {
	return false;
	}
	final Offset center = arguments[0] as Offset;
	final double radius = arguments[1] as double;
	final Paint paint = arguments[2] as Paint;
	if (offsetsAreClose(center, expectedCenter) && radiiAreClose(radius, expectedRadius) && paint.color.alpha == expectedAlpha) {
	return true;
	}
	throw '''
	Expected: center == $expectedCenter, radius == $expectedRadius, alpha == $expectedAlpha
	Found: center == $center radius == $radius alpha == ${paint.color.alpha}''';
	}
	);
	}

	// Initially the ripple's center is where the tap occurred;
	// ripplePattern always add a translation of tapDownOffset.
	expect(box, ripplePattern(Offset.zero, 30.0, 0));

	// The ripple fades in for 75ms. During that time its alpha is eased from
	// 0 to the splashColor's alpha value and its center moves towards the
	// center of the ink well.
	await tester.pump(const Duration(milliseconds: 50));
	expect(box, ripplePattern(const Offset(17.0, 17.0), 56.0, 120));

	// At 75ms the ripple has fade in: it's alpha matches the splashColor's
	// alpha and its center has moved closer to the ink well's center.
	await tester.pump(const Duration(milliseconds: 25));
	expect(box, ripplePattern(const Offset(29.0, 29.0), 73.0, 180));

	// At this point the splash radius has expanded to its limit: 5 past the
	// ink well's radius parameter. The splash center has moved to its final
	// location at the inkwell's center and the fade-out is about to start.
	// The fade-out begins at 225ms = 50ms + 25ms + 150ms.
	await tester.pump(const Duration(milliseconds: 150));
	expect(box, ripplePattern(inkWellCenter - tapDownOffset, 105.0, 180));

	// After another 150ms the fade-out is complete.
	await tester.pump(const Duration(milliseconds: 150));
	expect(box, ripplePattern(inkWellCenter - tapDownOffset, 105.0, 0));
	});

	testWidgets('Does the Ink widget render anything', (WidgetTester tester) async {
	await tester.pumpWidget(
	Directionality(
	textDirection: TextDirection.ltr,
	child: Material(
	child: Center(
	child: Ink(
	color: Colors.blue,
	width: 200.0,
	height: 200.0,
	child: InkWell(
	splashColor: Colors.green,
	onTap: () { },
	),
	),
	),
	),
	),
	);

	final Offset center = tester.getCenter(find.byType(InkWell));
	final TestGesture gesture = await tester.startGesture(center);
	await tester.pump(); // start gesture
	await tester.pump(const Duration(milliseconds: 200)); // wait for splash to be well under way

	final RenderBox box = Material.of(tester.element(find.byType(InkWell)))! as RenderBox;
	expect(
	box,
	paints
	..rect(rect: const Rect.fromLTRB(300.0, 200.0, 500.0, 400.0), color: Color(Colors.blue.value))
	..circle(color: Color(Colors.green.value)),
	);

	await tester.pumpWidget(
	Directionality(
	textDirection: TextDirection.ltr,
	child: Material(
	child: Center(
	child: Ink(
	color: Colors.red,
	width: 200.0,
	height: 200.0,
	child: InkWell(
	splashColor: Colors.green,
	onTap: () { },
	),
	),
	),
	),
	),
	);

	expect(Material.of(tester.element(find.byType(InkWell))), same(box));

	expect(
	box,
	paints
	..rect(rect: const Rect.fromLTRB(300.0, 200.0, 500.0, 400.0), color: Color(Colors.red.value))
	..circle(color: Color(Colors.green.value)),
	);

	await tester.pumpWidget(
	Directionality(
	textDirection: TextDirection.ltr,
	child: Material(
	child: Center(
	child: InkWell( // this is at a different depth in the tree so it's now a new InkWell
	splashColor: Colors.green,
	onTap: () { },
	),
	),
	),
	),
	);

	expect(Material.of(tester.element(find.byType(InkWell))), same(box));

	expect(box, isNot(paints..rect()));
	expect(box, isNot(paints..circle()));

	await gesture.up();
	});

	testWidgets('The InkWell widget renders an SelectAction or ActivateAction-induced ink ripple', (WidgetTester tester) async {
	const Color highlightColor = Color(0xAAFF0000);
	const Color splashColor = Color(0xB40000FF);
	const BorderRadius borderRadius = BorderRadius.all(Radius.circular(6.0));

	final FocusNode focusNode = FocusNode(debugLabel: 'Test Node');
	Future<void> buildTest(Intent intent) async {
	return tester.pumpWidget(
	Shortcuts(
	shortcuts: <ShortcutActivator, Intent>{
	const SingleActivator(LogicalKeyboardKey.space): intent,
	},
	child: Directionality(
	textDirection: TextDirection.ltr,
	child: Material(
	child: Center(
	child: SizedBox(
	width: 100.0,
	height: 100.0,
	child: InkWell(
	borderRadius: borderRadius,
	highlightColor: highlightColor,
	splashColor: splashColor,
	focusNode: focusNode,
	onTap: () { },
	radius: 100.0,
	splashFactory: InkRipple.splashFactory,
	),
	),
	),
	),
	),
	),
	);
	}

	await buildTest(const ActivateIntent());
	focusNode.requestFocus();
	await tester.pumpAndSettle();

	final Offset topLeft = tester.getTopLeft(find.byType(InkWell));
	final Offset inkWellCenter = tester.getCenter(find.byType(InkWell)) - topLeft;

	bool offsetsAreClose(Offset a, Offset b) => (a - b).distance < 1.0;
	bool radiiAreClose(double a, double b) => (a - b).abs() < 1.0;

	PaintPattern ripplePattern(double expectedRadius, int expectedAlpha) {
	return paints
	..translate(x: 0.0, y: 0.0)
	..translate(x: topLeft.dx, y: topLeft.dy)
	..something((Symbol method, List<dynamic> arguments) {
	if (method != #drawCircle) {
	return false;
	}
	final Offset center = arguments[0] as Offset;
	final double radius = arguments[1] as double;
	final Paint paint = arguments[2] as Paint;
	if (offsetsAreClose(center, inkWellCenter) &&
	radiiAreClose(radius, expectedRadius) &&
	paint.color.alpha == expectedAlpha) {
	return true;
	}
	throw '''
	Expected: center == $inkWellCenter, radius == $expectedRadius, alpha == $expectedAlpha
	Found: center == $center radius == $radius alpha == ${paint.color.alpha}''';
	},
	);
	}

	await buildTest(const ActivateIntent());
	await tester.pumpAndSettle();
	await tester.sendKeyEvent(LogicalKeyboardKey.space);
	await tester.pump();

	final RenderBox box = Material.of(tester.element(find.byType(InkWell)))! as RenderBox;

	// ripplePattern always add a translation of topLeft.
	expect(box, ripplePattern(30.0, 0));

	// The ripple fades in for 75ms. During that time its alpha is eased from
	// 0 to the splashColor's alpha value.
	await tester.pump(const Duration(milliseconds: 50));
	expect(box, ripplePattern(56.0, 120));

	// At 75ms the ripple has faded in: it's alpha matches the splashColor's
	// alpha.
	await tester.pump(const Duration(milliseconds: 25));
	expect(box, ripplePattern(73.0, 180));

	// At this point the splash radius has expanded to its limit: 5 past the
	// ink well's radius parameter. The fade-out is about to start.
	// The fade-out begins at 225ms = 50ms + 25ms + 150ms.
	await tester.pump(const Duration(milliseconds: 150));
	expect(box, ripplePattern(105.0, 180));

	// After another 150ms the fade-out is complete.
	await tester.pump(const Duration(milliseconds: 150));
	expect(box, ripplePattern(105.0, 0));
	});

	testWidgets('Cancel an InkRipple that was disposed when its animation ended', (WidgetTester tester) async {
	// Regression test for https://github.com/flutter/flutter/issues/14391
	await tester.pumpWidget(
	Directionality(
	textDirection: TextDirection.ltr,
	child: Material(
	child: Center(
	child: SizedBox(
	width: 100.0,
	height: 100.0,
	child: InkWell(
	onTap: () { },
	radius: 100.0,
	splashFactory: InkRipple.splashFactory,
	),
	),
	),
	),
	),
	);

	final Offset tapDownOffset = tester.getTopLeft(find.byType(InkWell));
	await tester.tapAt(tapDownOffset);
	await tester.pump(); // start splash
	await tester.pump(const Duration(milliseconds: 375)); // _kFadeOutDuration, in_ripple.dart

	final TestGesture gesture = await tester.startGesture(tapDownOffset);
	await tester.pump(); // start gesture
	await gesture.moveTo(Offset.zero);
	await gesture.up(); // generates a tap cancel
	await tester.pumpAndSettle();
	});

	testWidgets('Cancel an InkRipple that was disposed when its animation ended', (WidgetTester tester) async {
	const Color highlightColor = Color(0xAAFF0000);
	const Color splashColor = Color(0xB40000FF);

	// Regression test for https://github.com/flutter/flutter/issues/14391
	await tester.pumpWidget(
	Directionality(
	textDirection: TextDirection.ltr,
	child: Material(
	child: Center(
	child: SizedBox(
	width: 100.0,
	height: 100.0,
	child: InkWell(
	splashColor: splashColor,
	highlightColor: highlightColor,
	onTap: () { },
	radius: 100.0,
	splashFactory: InkRipple.splashFactory,
	),
	),
	),
	),
	),
	);

	final Offset tapDownOffset = tester.getTopLeft(find.byType(InkWell));
	await tester.tapAt(tapDownOffset);
	await tester.pump(); // start splash
	// No delay here so _fadeInController.value=1.0 (InkRipple.dart)

	// Generate a tap cancel; Will cancel the ink splash before it started
	final TestGesture gesture = await tester.startGesture(tapDownOffset);
	await tester.pump(); // start gesture
	await gesture.moveTo(Offset.zero);
	await gesture.up(); // generates a tap cancel

	final RenderBox box = Material.of(tester.element(find.byType(InkWell)))! as RenderBox;
	expect(box, paints..everything((Symbol method, List<dynamic> arguments) {
	if (method != #drawCircle) {
	return true;
	}
	final Paint paint = arguments[2] as Paint;
	if (paint.color.alpha == 0) {
	return true;
	}
	throw 'Expected: paint.color.alpha == 0, found: ${paint.color.alpha}';
	}));
	});
	}