// 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_test/flutter_test.dart'; import 'package:flutter/gestures.dart'; import 'package:flutter/rendering.dart'; import '../rendering/mock_canvas.dart'; import '../widgets/semantics_tester.dart'; void main() { testWidgets('TextButton, TextButton.icon defaults', (WidgetTester tester) async { const ColorScheme colorScheme = ColorScheme.light(); // Enabled TextButton await tester.pumpWidget( MaterialApp( theme: ThemeData.from(colorScheme: colorScheme), home: Center( child: TextButton( onPressed: () { }, child: const Text('button'), ), ), ), ); final Finder buttonMaterial = find.descendant( of: find.byType(TextButton), matching: find.byType(Material), ); Material material = tester.widget<Material>(buttonMaterial); expect(material.animationDuration, const Duration(milliseconds: 200)); expect(material.borderOnForeground, true); expect(material.borderRadius, null); expect(material.clipBehavior, Clip.none); expect(material.color, Colors.transparent); expect(material.elevation, 0.0); expect(material.shadowColor, const Color(0xff000000)); expect(material.shape, RoundedRectangleBorder(borderRadius: BorderRadius.circular(4.0))); expect(material.textStyle!.color, colorScheme.primary); expect(material.textStyle!.fontFamily, 'Roboto'); expect(material.textStyle!.fontSize, 14); expect(material.textStyle!.fontWeight, FontWeight.w500); expect(material.type, MaterialType.button); final Offset center = tester.getCenter(find.byType(TextButton)); final TestGesture gesture = await tester.startGesture(center); await tester.pump(); // start the splash animation await tester.pump(const Duration(milliseconds: 100)); // splash is underway final RenderObject inkFeatures = tester.allRenderObjects.firstWhere((RenderObject object) => object.runtimeType.toString() == '_RenderInkFeatures'); expect(inkFeatures, paints..circle(color: colorScheme.primary.withAlpha(0x1f))); // splash color is primary(0.12) await gesture.up(); await tester.pumpAndSettle(); material = tester.widget<Material>(buttonMaterial); // No change vs enabled and not pressed. expect(material.animationDuration, const Duration(milliseconds: 200)); expect(material.borderOnForeground, true); expect(material.borderRadius, null); expect(material.clipBehavior, Clip.none); expect(material.color, Colors.transparent); expect(material.elevation, 0.0); expect(material.shadowColor, const Color(0xff000000)); expect(material.shape, RoundedRectangleBorder(borderRadius: BorderRadius.circular(4.0))); expect(material.textStyle!.color, colorScheme.primary); expect(material.textStyle!.fontFamily, 'Roboto'); expect(material.textStyle!.fontSize, 14); expect(material.textStyle!.fontWeight, FontWeight.w500); expect(material.type, MaterialType.button); // Enabled TextButton.icon final Key iconButtonKey = UniqueKey(); await tester.pumpWidget( MaterialApp( theme: ThemeData.from(colorScheme: colorScheme), home: Center( child: TextButton.icon( key: iconButtonKey, onPressed: () { }, icon: const Icon(Icons.add), label: const Text('label'), ), ), ), ); final Finder iconButtonMaterial = find.descendant( of: find.byKey(iconButtonKey), matching: find.byType(Material), ); material = tester.widget<Material>(iconButtonMaterial); expect(material.animationDuration, const Duration(milliseconds: 200)); expect(material.borderOnForeground, true); expect(material.borderRadius, null); expect(material.clipBehavior, Clip.none); expect(material.color, Colors.transparent); expect(material.elevation, 0.0); expect(material.shadowColor, const Color(0xff000000)); expect(material.shape, RoundedRectangleBorder(borderRadius: BorderRadius.circular(4.0))); expect(material.textStyle!.color, colorScheme.primary); expect(material.textStyle!.fontFamily, 'Roboto'); expect(material.textStyle!.fontSize, 14); expect(material.textStyle!.fontWeight, FontWeight.w500); expect(material.type, MaterialType.button); // Disabled TextButton await tester.pumpWidget( MaterialApp( theme: ThemeData.from(colorScheme: colorScheme), home: const Center( child: TextButton( onPressed: null, child: Text('button'), ), ), ), ); material = tester.widget<Material>(buttonMaterial); expect(material.animationDuration, const Duration(milliseconds: 200)); expect(material.borderOnForeground, true); expect(material.borderRadius, null); expect(material.clipBehavior, Clip.none); expect(material.color, Colors.transparent); expect(material.elevation, 0.0); expect(material.shadowColor, const Color(0xff000000)); expect(material.shape, RoundedRectangleBorder(borderRadius: BorderRadius.circular(4.0))); expect(material.textStyle!.color, colorScheme.onSurface.withOpacity(0.38)); expect(material.textStyle!.fontFamily, 'Roboto'); expect(material.textStyle!.fontSize, 14); expect(material.textStyle!.fontWeight, FontWeight.w500); expect(material.type, MaterialType.button); }); testWidgets('Default TextButton meets a11y contrast guidelines', (WidgetTester tester) async { final FocusNode focusNode = FocusNode(); await tester.pumpWidget( MaterialApp( theme: ThemeData.from(colorScheme: const ColorScheme.light()), home: Scaffold( body: Center( child: TextButton( child: const Text('TextButton'), onPressed: () { }, focusNode: focusNode, ), ), ), ), ); // Default, not disabled. await expectLater(tester, meetsGuideline(textContrastGuideline)); // Focused. focusNode.requestFocus(); await tester.pumpAndSettle(); await expectLater(tester, meetsGuideline(textContrastGuideline)); // Hovered. final Offset center = tester.getCenter(find.byType(TextButton)); final TestGesture gesture = await tester.createGesture( kind: PointerDeviceKind.mouse, ); await gesture.addPointer(); await gesture.moveTo(center); await tester.pumpAndSettle(); await expectLater(tester, meetsGuideline(textContrastGuideline)); // Highlighted (pressed). await gesture.down(center); await tester.pump(); // Start the splash and highlight animations. await tester.pump(const Duration(milliseconds: 800)); // Wait for splash and highlight to be well under way. await expectLater(tester, meetsGuideline(textContrastGuideline)); await gesture.removePointer(); }, skip: isBrowser, // https://github.com/flutter/flutter/issues/44115 semanticsEnabled: true, ); testWidgets('TextButton with colored theme meets a11y contrast guidelines', (WidgetTester tester) async { final FocusNode focusNode = FocusNode(); Color getTextColor(Set<MaterialState> states) { final Set<MaterialState> interactiveStates = <MaterialState>{ MaterialState.pressed, MaterialState.hovered, MaterialState.focused, }; if (states.any(interactiveStates.contains)) { return Colors.blue[900]!; } return Colors.blue[800]!; } await tester.pumpWidget( MaterialApp( home: Scaffold( body: Center( child: TextButtonTheme( data: TextButtonThemeData( style: ButtonStyle( foregroundColor: MaterialStateProperty.resolveWith<Color>(getTextColor), ), ), child: Builder( builder: (BuildContext context) { return TextButton( child: const Text('TextButton'), onPressed: () {}, focusNode: focusNode, ); }, ), ), ), ), ), ); // Default, not disabled. await expectLater(tester, meetsGuideline(textContrastGuideline)); // Focused. focusNode.requestFocus(); await tester.pumpAndSettle(); await expectLater(tester, meetsGuideline(textContrastGuideline)); // Hovered. final Offset center = tester.getCenter(find.byType(TextButton)); final TestGesture gesture = await tester.createGesture( kind: PointerDeviceKind.mouse, ); await gesture.addPointer(); addTearDown(gesture.removePointer); await gesture.moveTo(center); await tester.pumpAndSettle(); await expectLater(tester, meetsGuideline(textContrastGuideline)); // Highlighted (pressed). await gesture.down(center); await tester.pump(); // Start the splash and highlight animations. await tester.pump(const Duration(milliseconds: 800)); // Wait for splash and highlight to be well under way. await expectLater(tester, meetsGuideline(textContrastGuideline)); }, skip: isBrowser, // https://github.com/flutter/flutter/issues/44115 semanticsEnabled: true, ); testWidgets('TextButton uses stateful color for text color in different states', (WidgetTester tester) async { final FocusNode focusNode = FocusNode(); const Color pressedColor = Color(0x00000001); const Color hoverColor = Color(0x00000002); const Color focusedColor = Color(0x00000003); const Color defaultColor = Color(0x00000004); Color getTextColor(Set<MaterialState> states) { if (states.contains(MaterialState.pressed)) { return pressedColor; } if (states.contains(MaterialState.hovered)) { return hoverColor; } if (states.contains(MaterialState.focused)) { return focusedColor; } return defaultColor; } await tester.pumpWidget( MaterialApp( home: Scaffold( body: Center( child: TextButton( style: ButtonStyle( foregroundColor: MaterialStateProperty.resolveWith<Color>(getTextColor), ), onPressed: () {}, focusNode: focusNode, child: const Text('TextButton'), ), ), ), ), ); Color? textColor() { return tester.renderObject<RenderParagraph>(find.text('TextButton')).text.style?.color; } // Default, not disabled. expect(textColor(), equals(defaultColor)); // Focused. focusNode.requestFocus(); await tester.pumpAndSettle(); expect(textColor(), focusedColor); // Hovered. final Offset center = tester.getCenter(find.byType(TextButton)); final TestGesture gesture = await tester.createGesture( kind: PointerDeviceKind.mouse, ); await gesture.addPointer(); addTearDown(gesture.removePointer); await gesture.moveTo(center); await tester.pumpAndSettle(); expect(textColor(), hoverColor); // Highlighted (pressed). await gesture.down(center); await tester.pump(); // Start the splash and highlight animations. await tester.pump(const Duration(milliseconds: 800)); // Wait for splash and highlight to be well under way. expect(textColor(), pressedColor); }); testWidgets('TextButton uses stateful color for icon color in different states', (WidgetTester tester) async { final FocusNode focusNode = FocusNode(); final Key buttonKey = UniqueKey(); const Color pressedColor = Color(0x00000001); const Color hoverColor = Color(0x00000002); const Color focusedColor = Color(0x00000003); const Color defaultColor = Color(0x00000004); Color getTextColor(Set<MaterialState> states) { if (states.contains(MaterialState.pressed)) { return pressedColor; } if (states.contains(MaterialState.hovered)) { return hoverColor; } if (states.contains(MaterialState.focused)) { return focusedColor; } return defaultColor; } await tester.pumpWidget( MaterialApp( home: Scaffold( body: Center( child: TextButton.icon( style: ButtonStyle( foregroundColor: MaterialStateProperty.resolveWith<Color>(getTextColor), ), key: buttonKey, icon: const Icon(Icons.add), label: const Text('TextButton'), onPressed: () {}, focusNode: focusNode, ), ), ), ), ); Color? iconColor() => _iconStyle(tester, Icons.add)?.color; // Default, not disabled. expect(iconColor(), equals(defaultColor)); // Focused. focusNode.requestFocus(); await tester.pumpAndSettle(); expect(iconColor(), focusedColor); // Hovered. final Offset center = tester.getCenter(find.byKey(buttonKey)); final TestGesture gesture = await tester.createGesture( kind: PointerDeviceKind.mouse, ); await gesture.addPointer(); addTearDown(gesture.removePointer); await gesture.moveTo(center); await tester.pumpAndSettle(); expect(iconColor(), hoverColor); // Highlighted (pressed). await gesture.down(center); await tester.pump(); // Start the splash and highlight animations. await tester.pump(const Duration(milliseconds: 800)); // Wait for splash and highlight to be well under way. expect(iconColor(), pressedColor); }); testWidgets('TextButton has no clip by default', (WidgetTester tester) async { await tester.pumpWidget( Directionality( textDirection: TextDirection.ltr, child: Material( child: TextButton( child: Container(), onPressed: () { /* to make sure the button is enabled */ }, ), ), ), ); expect( tester.renderObject(find.byType(TextButton)), paintsExactlyCountTimes(#clipPath, 0), ); }); testWidgets('Does TextButton work with hover', (WidgetTester tester) async { const Color hoverColor = Color(0xff001122); Color? getOverlayColor(Set<MaterialState> states) { return states.contains(MaterialState.hovered) ? hoverColor : null; } await tester.pumpWidget( Directionality( textDirection: TextDirection.ltr, child: Material( child: TextButton( style: ButtonStyle( overlayColor: MaterialStateProperty.resolveWith<Color?>(getOverlayColor), ), child: Container(), onPressed: () { /* to make sure the button is enabled */ }, ), ), ), ); final TestGesture gesture = await tester.createGesture(kind: PointerDeviceKind.mouse); await gesture.addPointer(); addTearDown(gesture.removePointer); await gesture.moveTo(tester.getCenter(find.byType(TextButton))); await tester.pumpAndSettle(); final RenderObject inkFeatures = tester.allRenderObjects.firstWhere((RenderObject object) => object.runtimeType.toString() == '_RenderInkFeatures'); expect(inkFeatures, paints..rect(color: hoverColor)); }); testWidgets('Does TextButton work with focus', (WidgetTester tester) async { const Color focusColor = Color(0xff001122); Color? getOverlayColor(Set<MaterialState> states) { return states.contains(MaterialState.focused) ? focusColor : null; } final FocusNode focusNode = FocusNode(debugLabel: 'TextButton Node'); await tester.pumpWidget( Directionality( textDirection: TextDirection.ltr, child: TextButton( style: ButtonStyle( overlayColor: MaterialStateProperty.resolveWith<Color?>(getOverlayColor), ), focusNode: focusNode, onPressed: () { }, child: const Text('button'), ), ), ); WidgetsBinding.instance!.focusManager.highlightStrategy = FocusHighlightStrategy.alwaysTraditional; focusNode.requestFocus(); await tester.pumpAndSettle(); final RenderObject inkFeatures = tester.allRenderObjects.firstWhere((RenderObject object) => object.runtimeType.toString() == '_RenderInkFeatures'); expect(inkFeatures, paints..rect(color: focusColor)); }); testWidgets('Does TextButton contribute semantics', (WidgetTester tester) async { final SemanticsTester semantics = SemanticsTester(tester); await tester.pumpWidget( Directionality( textDirection: TextDirection.ltr, child: Material( child: Center( child: TextButton( style: ButtonStyle( // Specifying minimumSize to mimic the original minimumSize for // RaisedButton so that the semantics tree's rect and transform // match the original version of this test. minimumSize: MaterialStateProperty.all<Size>(const Size(88, 36)), ), onPressed: () { }, child: const Text('ABC'), ), ), ), ), ); expect(semantics, hasSemantics( TestSemantics.root( children: <TestSemantics>[ TestSemantics.rootChild( actions: <SemanticsAction>[ SemanticsAction.tap, ], label: 'ABC', rect: const Rect.fromLTRB(0.0, 0.0, 88.0, 48.0), transform: Matrix4.translationValues(356.0, 276.0, 0.0), flags: <SemanticsFlag>[ SemanticsFlag.hasEnabledState, SemanticsFlag.isButton, SemanticsFlag.isEnabled, SemanticsFlag.isFocusable, ], ), ], ), ignoreId: true, )); semantics.dispose(); }); testWidgets('Does TextButton scale with font scale changes', (WidgetTester tester) async { await tester.pumpWidget( Directionality( textDirection: TextDirection.ltr, child: Material( child: MediaQuery( data: const MediaQueryData(textScaleFactor: 1.0), child: Center( child: TextButton( onPressed: () { }, child: const Text('ABC'), ), ), ), ), ), ); expect(tester.getSize(find.byType(TextButton)), equals(const Size(64.0, 48.0))); expect(tester.getSize(find.byType(Text)), equals(const Size(42.0, 14.0))); // textScaleFactor expands text, but not button. await tester.pumpWidget( Directionality( textDirection: TextDirection.ltr, child: Material( child: MediaQuery( data: const MediaQueryData(textScaleFactor: 1.3), child: Center( child: TextButton( onPressed: () { }, child: const Text('ABC'), ), ), ), ), ), ); // Scaled text rendering is different on Linux and Mac by one pixel. // TODO(gspencergoog): Figure out why this is, and fix it. https://github.com/flutter/flutter/issues/12357 expect(tester.getSize(find.byType(TextButton)).width, isIn(<double>[70.0, 71.0])); expect(tester.getSize(find.byType(TextButton)).height, isIn(<double>[47.0, 48.0])); expect(tester.getSize(find.byType(Text)).width, isIn(<double>[54.0, 55.0])); expect(tester.getSize(find.byType(Text)).height, isIn(<double>[18.0, 19.0])); // Set text scale large enough to expand text and button. await tester.pumpWidget( Directionality( textDirection: TextDirection.ltr, child: Material( child: MediaQuery( data: const MediaQueryData(textScaleFactor: 3.0), child: Center( child: TextButton( onPressed: () { }, child: const Text('ABC'), ), ), ), ), ), ); // Scaled text rendering is different on Linux and Mac by one pixel. // TODO(gspencergoog): Figure out why this is, and fix it. https://github.com/flutter/flutter/issues/12357 expect(tester.getSize(find.byType(TextButton)).width, isIn(<double>[133.0, 134.0])); expect(tester.getSize(find.byType(TextButton)).height, equals(48.0)); expect(tester.getSize(find.byType(Text)).width, isIn(<double>[126.0, 127.0])); expect(tester.getSize(find.byType(Text)).height, equals(42.0)); }); testWidgets('TextButton size is configurable by ThemeData.materialTapTargetSize', (WidgetTester tester) async { Widget buildFrame(MaterialTapTargetSize tapTargetSize, Key key) { return Theme( data: ThemeData(materialTapTargetSize: tapTargetSize), child: Directionality( textDirection: TextDirection.ltr, child: Material( child: Center( child: TextButton( key: key, child: const SizedBox(width: 50.0, height: 8.0), onPressed: () { }, ), ), ), ), ); } final Key key1 = UniqueKey(); await tester.pumpWidget(buildFrame(MaterialTapTargetSize.padded, key1)); expect(tester.getSize(find.byKey(key1)), const Size(66.0, 48.0)); final Key key2 = UniqueKey(); await tester.pumpWidget(buildFrame(MaterialTapTargetSize.shrinkWrap, key2)); expect(tester.getSize(find.byKey(key2)), const Size(66.0, 36.0)); }); testWidgets('TextButton onPressed and onLongPress callbacks are correctly called when non-null', (WidgetTester tester) async { bool wasPressed; Finder textButton; Widget buildFrame({ VoidCallback? onPressed, VoidCallback? onLongPress }) { return Directionality( textDirection: TextDirection.ltr, child: TextButton( child: const Text('button'), onPressed: onPressed, onLongPress: onLongPress, ), ); } // onPressed not null, onLongPress null. wasPressed = false; await tester.pumpWidget( buildFrame(onPressed: () { wasPressed = true; }, onLongPress: null), ); textButton = find.byType(TextButton); expect(tester.widget<TextButton>(textButton).enabled, true); await tester.tap(textButton); expect(wasPressed, true); // onPressed null, onLongPress not null. wasPressed = false; await tester.pumpWidget( buildFrame(onPressed: null, onLongPress: () { wasPressed = true; }), ); textButton = find.byType(TextButton); expect(tester.widget<TextButton>(textButton).enabled, true); await tester.longPress(textButton); expect(wasPressed, true); // onPressed null, onLongPress null. await tester.pumpWidget( buildFrame(onPressed: null, onLongPress: null), ); textButton = find.byType(TextButton); expect(tester.widget<TextButton>(textButton).enabled, false); }); testWidgets('TextButton onPressed and onLongPress callbacks are distinctly recognized', (WidgetTester tester) async { bool didPressButton = false; bool didLongPressButton = false; await tester.pumpWidget( Directionality( textDirection: TextDirection.ltr, child: TextButton( onPressed: () { didPressButton = true; }, onLongPress: () { didLongPressButton = true; }, child: const Text('button'), ), ), ); final Finder textButton = find.byType(TextButton); expect(tester.widget<TextButton>(textButton).enabled, true); expect(didPressButton, isFalse); await tester.tap(textButton); expect(didPressButton, isTrue); expect(didLongPressButton, isFalse); await tester.longPress(textButton); expect(didLongPressButton, isTrue); }); testWidgets('TextButton responds to density changes.', (WidgetTester tester) async { const Key key = Key('test'); const Key childKey = Key('test child'); Future<void> buildTest(VisualDensity visualDensity, { bool useText = false }) async { return await tester.pumpWidget( MaterialApp( home: Directionality( textDirection: TextDirection.rtl, child: Center( child: TextButton( style: ButtonStyle( visualDensity: visualDensity, ), key: key, onPressed: () {}, child: useText ? const Text('Text', key: childKey) : Container(key: childKey, width: 100, height: 100, color: const Color(0xffff0000)), ), ), ), ), ); } await buildTest(const VisualDensity()); final RenderBox box = tester.renderObject(find.byKey(key)); Rect childRect = tester.getRect(find.byKey(childKey)); await tester.pumpAndSettle(); expect(box.size, equals(const Size(116, 116))); expect(childRect, equals(const Rect.fromLTRB(350, 250, 450, 350))); await buildTest(const VisualDensity(horizontal: 3.0, vertical: 3.0)); await tester.pumpAndSettle(); childRect = tester.getRect(find.byKey(childKey)); expect(box.size, equals(const Size(140, 140))); expect(childRect, equals(const Rect.fromLTRB(350, 250, 450, 350))); await buildTest(const VisualDensity(horizontal: -3.0, vertical: -3.0)); await tester.pumpAndSettle(); childRect = tester.getRect(find.byKey(childKey)); expect(box.size, equals(const Size(100, 100))); expect(childRect, equals(const Rect.fromLTRB(350, 250, 450, 350))); await buildTest(const VisualDensity(), useText: true); await tester.pumpAndSettle(); childRect = tester.getRect(find.byKey(childKey)); expect(box.size, equals(const Size(72, 48))); expect(childRect, equals(const Rect.fromLTRB(372.0, 293.0, 428.0, 307.0))); await buildTest(const VisualDensity(horizontal: 3.0, vertical: 3.0), useText: true); await tester.pumpAndSettle(); childRect = tester.getRect(find.byKey(childKey)); expect(box.size, equals(const Size(96, 60))); expect(childRect, equals(const Rect.fromLTRB(372.0, 293.0, 428.0, 307.0))); await buildTest(const VisualDensity(horizontal: -3.0, vertical: -3.0), useText: true); await tester.pumpAndSettle(); childRect = tester.getRect(find.byKey(childKey)); expect(box.size, equals(const Size(56, 36))); expect(childRect, equals(const Rect.fromLTRB(372.0, 293.0, 428.0, 307.0))); }); group('Default TextButton padding for textScaleFactor, textDirection', () { const ValueKey<String> buttonKey = ValueKey<String>('button'); const ValueKey<String> labelKey = ValueKey<String>('label'); const ValueKey<String> iconKey = ValueKey<String>('icon'); const List<double> textScaleFactorOptions = <double>[0.5, 1.0, 1.25, 1.5, 2.0, 2.5, 3.0, 4.0]; const List<TextDirection> textDirectionOptions = <TextDirection>[TextDirection.ltr, TextDirection.rtl]; const List<Widget?> iconOptions = <Widget?>[null, Icon(Icons.add, size: 18, key: iconKey)]; // Expected values for each textScaleFactor. final Map<double, double> paddingVertical = <double, double>{ 0.5: 8, 1: 8, 1.25: 6, 1.5: 4, 2: 0, 2.5: 0, 3: 0, 4: 0, }; final Map<double, double> paddingWithIconGap = <double, double>{ 0.5: 8, 1: 8, 1.25: 7, 1.5: 6, 2: 4, 2.5: 4, 3: 4, 4: 4, }; final Map<double, double> textPaddingWithoutIconHorizontal = <double, double>{ 0.5: 8, 1: 8, 1.25: 8, 1.5: 8, 2: 8, 2.5: 6, 3: 4, 4: 4, }; final Map<double, double> textPaddingWithIconHorizontal = <double, double>{ 0.5: 8, 1: 8, 1.25: 7, 1.5: 6, 2: 4, 2.5: 4, 3: 4, 4: 4, }; Rect globalBounds(RenderBox renderBox) { final Offset topLeft = renderBox.localToGlobal(Offset.zero); return topLeft & renderBox.size; } /// Computes the padding between two [Rect]s, one inside the other. EdgeInsets paddingBetween({ required Rect parent, required Rect child }) { assert (parent.intersect(child) == child); return EdgeInsets.fromLTRB( child.left - parent.left, child.top - parent.top, parent.right - child.right, parent.bottom - child.bottom, ); } for (final double textScaleFactor in textScaleFactorOptions) { for (final TextDirection textDirection in textDirectionOptions) { for (final Widget? icon in iconOptions) { final String testName = 'TextButton' ', text scale $textScaleFactor' '${icon != null ? ", with icon" : ""}' '${textDirection == TextDirection.rtl ? ", RTL" : ""}'; testWidgets(testName, (WidgetTester tester) async { await tester.pumpWidget( MaterialApp( theme: ThemeData.from(colorScheme: const ColorScheme.light()), home: Builder( builder: (BuildContext context) { return MediaQuery( data: MediaQuery.of(context).copyWith( textScaleFactor: textScaleFactor, ), child: Directionality( textDirection: textDirection, child: Scaffold( body: Center( child: icon == null ? TextButton( key: buttonKey, onPressed: () {}, child: const Text('button', key: labelKey), ) : TextButton.icon( key: buttonKey, onPressed: () {}, icon: icon, label: const Text('button', key: labelKey), ), ), ), ), ); }, ), ), ); final Element paddingElement = tester.element( find.descendant( of: find.byKey(buttonKey), matching: find.byType(Padding), ), ); expect(Directionality.of(paddingElement), textDirection); final Padding paddingWidget = paddingElement.widget as Padding; // Compute expected padding, and check. final double expectedPaddingTop = paddingVertical[textScaleFactor]!; final double expectedPaddingBottom = paddingVertical[textScaleFactor]!; final double expectedPaddingStart = icon != null ? textPaddingWithIconHorizontal[textScaleFactor]! : textPaddingWithoutIconHorizontal[textScaleFactor]!; final double expectedPaddingEnd = expectedPaddingStart; final EdgeInsets expectedPadding = EdgeInsetsDirectional.fromSTEB( expectedPaddingStart, expectedPaddingTop, expectedPaddingEnd, expectedPaddingBottom, ).resolve(textDirection); expect(paddingWidget.padding.resolve(textDirection), expectedPadding); // Measure padding in terms of the difference between the button and its label child // and check that. final RenderBox labelRenderBox = tester.renderObject<RenderBox>(find.byKey(labelKey)); final Rect labelBounds = globalBounds(labelRenderBox); final RenderBox? iconRenderBox = icon == null ? null : tester.renderObject<RenderBox>(find.byKey(iconKey)); final Rect? iconBounds = icon == null ? null : globalBounds(iconRenderBox!); final Rect childBounds = icon == null ? labelBounds : labelBounds.expandToInclude(iconBounds!); // We measure the `InkResponse` descendant of the button // element, because the button has a larger `RenderBox` // which accommodates the minimum tap target with a height // of 48. final RenderBox buttonRenderBox = tester.renderObject<RenderBox>( find.descendant( of: find.byKey(buttonKey), matching: find.byWidgetPredicate( (Widget widget) => widget is InkResponse, ), ), ); final Rect buttonBounds = globalBounds(buttonRenderBox); final EdgeInsets visuallyMeasuredPadding = paddingBetween( parent: buttonBounds, child: childBounds, ); // Since there is a requirement of a minimum width of 64 // and a minimum height of 36 on material buttons, the visual // padding of smaller buttons may not match their settings. // Therefore, we only test buttons that are large enough. if (buttonBounds.width > 64) { expect( visuallyMeasuredPadding.left, expectedPadding.left, ); expect( visuallyMeasuredPadding.right, expectedPadding.right, ); } if (buttonBounds.height > 36) { expect( visuallyMeasuredPadding.top, expectedPadding.top, ); expect( visuallyMeasuredPadding.bottom, expectedPadding.bottom, ); } // Check the gap between the icon and the label if (icon != null) { final double gapWidth = textDirection == TextDirection.ltr ? labelBounds.left - iconBounds!.right : iconBounds!.left - labelBounds.right; expect(gapWidth, paddingWithIconGap[textScaleFactor]); } // Check the text's height - should be consistent with the textScaleFactor. final RenderBox textRenderObject = tester.renderObject<RenderBox>( find.descendant( of: find.byKey(labelKey), matching: find.byElementPredicate( (Element element) => element.widget is RichText, ), ), ); final double textHeight = textRenderObject.paintBounds.size.height; final double expectedTextHeight = 14 * textScaleFactor; expect(textHeight, moreOrLessEquals(expectedTextHeight, epsilon: 0.5)); }); } } } }); testWidgets('Override TextButton default padding', (WidgetTester tester) async { await tester.pumpWidget( MaterialApp( theme: ThemeData.from(colorScheme: const ColorScheme.light()), home: Builder( builder: (BuildContext context) { return MediaQuery( data: MediaQuery.of(context).copyWith( textScaleFactor: 2, ), child: Scaffold( body: Center( child: TextButton( style: TextButton.styleFrom(padding: const EdgeInsets.all(22)), onPressed: () {}, child: const Text('TextButton') ), ), ), ); }, ), ), ); final Padding paddingWidget = tester.widget<Padding>( find.descendant( of: find.byType(TextButton), matching: find.byType(Padding), ), ); expect(paddingWidget.padding, const EdgeInsets.all(22)); }); } TextStyle? _iconStyle(WidgetTester tester, IconData icon) { final RichText iconRichText = tester.widget<RichText>( find.descendant(of: find.byIcon(icon), matching: find.byType(RichText)), ); return iconRichText.text.style; }