// 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. // @dart = 2.8 import 'package:flutter/gestures.dart'; import 'package:flutter/material.dart'; import 'package:flutter_test/flutter_test.dart'; import 'package:flutter/rendering.dart'; import '../rendering/mock_canvas.dart'; import '../widgets/semantics_tester.dart'; void main() { testWidgets('ElevatedButton defaults', (WidgetTester tester) async { const ColorScheme colorScheme = ColorScheme.light(); // Enabled ElevatedButton await tester.pumpWidget( MaterialApp( theme: ThemeData.from(colorScheme: colorScheme), home: Center( child: ElevatedButton( onPressed: () { }, child: const Text('button'), ), ), ), ); final Finder rawButtonMaterial = find.descendant( of: find.byType(ElevatedButton), matching: find.byType(Material), ); Material material = tester.widget<Material>(rawButtonMaterial); expect(material.animationDuration, const Duration(milliseconds: 200)); expect(material.borderOnForeground, true); expect(material.borderRadius, null); expect(material.clipBehavior, Clip.none); expect(material.color, colorScheme.primary); expect(material.elevation, 2); expect(material.shadowColor, const Color(0xff000000)); expect(material.shape, RoundedRectangleBorder(borderRadius: BorderRadius.circular(4))); expect(material.textStyle.color, colorScheme.onPrimary); 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(ElevatedButton)); 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.onPrimary.withAlpha(0x3d))); // splash color is onPrimary(0.24) // Only elevation changes when enabled and pressed. material = tester.widget<Material>(rawButtonMaterial); expect(material.animationDuration, const Duration(milliseconds: 200)); expect(material.borderOnForeground, true); expect(material.borderRadius, null); expect(material.clipBehavior, Clip.none); expect(material.color, colorScheme.primary); expect(material.elevation, 8); expect(material.shadowColor, const Color(0xff000000)); expect(material.shape, RoundedRectangleBorder(borderRadius: BorderRadius.circular(4))); expect(material.textStyle.color, colorScheme.onPrimary); expect(material.textStyle.fontFamily, 'Roboto'); expect(material.textStyle.fontSize, 14); expect(material.textStyle.fontWeight, FontWeight.w500); expect(material.type, MaterialType.button); await gesture.up(); await tester.pumpAndSettle(); // Disabled ElevatedButton await tester.pumpWidget( MaterialApp( theme: ThemeData.from(colorScheme: colorScheme), home: const Center( child: ElevatedButton( onPressed: null, child: Text('button'), ), ), ), ); // Finish the elevation animation, final background color change. await tester.pumpAndSettle(); material = tester.widget<Material>(rawButtonMaterial); expect(material.animationDuration, const Duration(milliseconds: 200)); expect(material.borderOnForeground, true); expect(material.borderRadius, null); expect(material.clipBehavior, Clip.none); expect(material.color, colorScheme.onSurface.withOpacity(0.12)); expect(material.elevation, 0.0); expect(material.shadowColor, const Color(0xff000000)); expect(material.shape, RoundedRectangleBorder(borderRadius: BorderRadius.circular(4))); 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 ElevatedButton 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: ElevatedButton( child: const Text('ElevatedButton'), 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(ElevatedButton)); 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)); }, skip: isBrowser, // https://github.com/flutter/flutter/issues/44115 semanticsEnabled: true, ); testWidgets('ElevatedButton 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: ElevatedButtonTheme( data: ElevatedButtonThemeData( style: ButtonStyle( foregroundColor: MaterialStateProperty.resolveWith<Color>(getTextColor), ), ), child: Builder( builder: (BuildContext context) { return ElevatedButton( child: const Text('ElevatedButton'), onPressed: () {}, focusNode: focusNode, ); }, ), ), ), ), ), ); Color textColor() { return tester.renderObject<RenderParagraph>(find.text('ElevatedButton')).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(ElevatedButton)); 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('ElevatedButton 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: ElevatedButtonTheme( data: ElevatedButtonThemeData( style: ButtonStyle( foregroundColor: MaterialStateProperty.resolveWith<Color>(getTextColor), ), ), child: Builder( builder: (BuildContext context) { return ElevatedButton.icon( key: buttonKey, icon: const Icon(Icons.add), label: const Text('ElevatedButton'), 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('ElevatedButton onPressed and onLongPress callbacks are correctly called when non-null', (WidgetTester tester) async { bool wasPressed; Finder elevatedButton; Widget buildFrame({ VoidCallback onPressed, VoidCallback onLongPress }) { return Directionality( textDirection: TextDirection.ltr, child: ElevatedButton( child: const Text('button'), onPressed: onPressed, onLongPress: onLongPress, ), ); } // onPressed not null, onLongPress null. wasPressed = false; await tester.pumpWidget( buildFrame(onPressed: () { wasPressed = true; }, onLongPress: null), ); elevatedButton = find.byType(ElevatedButton); expect(tester.widget<ElevatedButton>(elevatedButton).enabled, true); await tester.tap(elevatedButton); expect(wasPressed, true); // onPressed null, onLongPress not null. wasPressed = false; await tester.pumpWidget( buildFrame(onPressed: null, onLongPress: () { wasPressed = true; }), ); elevatedButton = find.byType(ElevatedButton); expect(tester.widget<ElevatedButton>(elevatedButton).enabled, true); await tester.longPress(elevatedButton); expect(wasPressed, true); // onPressed null, onLongPress null. await tester.pumpWidget( buildFrame(onPressed: null, onLongPress: null), ); elevatedButton = find.byType(ElevatedButton); expect(tester.widget<ElevatedButton>(elevatedButton).enabled, false); }); testWidgets('ElevatedButton onPressed and onLongPress callbacks are distinctly recognized', (WidgetTester tester) async { bool didPressButton = false; bool didLongPressButton = false; await tester.pumpWidget( Directionality( textDirection: TextDirection.ltr, child: ElevatedButton( onPressed: () { didPressButton = true; }, onLongPress: () { didLongPressButton = true; }, child: const Text('button'), ), ), ); final Finder elevatedButton = find.byType(ElevatedButton); expect(tester.widget<ElevatedButton>(elevatedButton).enabled, true); expect(didPressButton, isFalse); await tester.tap(elevatedButton); expect(didPressButton, isTrue); expect(didLongPressButton, isFalse); await tester.longPress(elevatedButton); expect(didLongPressButton, isTrue); }); testWidgets('Does ElevatedButton work with hover', (WidgetTester tester) async { const Color hoverColor = Color(0xff001122); await tester.pumpWidget( Directionality( textDirection: TextDirection.ltr, child: ElevatedButton( style: ButtonStyle( overlayColor: MaterialStateProperty.resolveWith<Color>((Set<MaterialState> states) { return states.contains(MaterialState.hovered) ? hoverColor : null; }), ), onPressed: () { }, child: const Text('button'), ), ), ); final TestGesture gesture = await tester.createGesture(kind: PointerDeviceKind.mouse); await gesture.addPointer(); await gesture.moveTo(tester.getCenter(find.byType(ElevatedButton))); await tester.pumpAndSettle(); final RenderObject inkFeatures = tester.allRenderObjects.firstWhere((RenderObject object) => object.runtimeType.toString() == '_RenderInkFeatures'); expect(inkFeatures, paints..rect(color: hoverColor)); await gesture.removePointer(); }); testWidgets('Does ElevatedButton work with focus', (WidgetTester tester) async { const Color focusColor = Color(0xff001122); final FocusNode focusNode = FocusNode(debugLabel: 'ElevatedButton Node'); await tester.pumpWidget( Directionality( textDirection: TextDirection.ltr, child: ElevatedButton( style: ButtonStyle( overlayColor: MaterialStateProperty.resolveWith<Color>((Set<MaterialState> states) { return states.contains(MaterialState.focused) ? focusColor : null; }), ), focusNode: focusNode, onPressed: () { }, child: const Text('button'), ), ), ); FocusManager.instance.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 ElevatedButton work with autofocus', (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: 'ElevatedButton Node'); await tester.pumpWidget( Directionality( textDirection: TextDirection.ltr, child: ElevatedButton( autofocus: true, style: ButtonStyle( overlayColor: MaterialStateProperty.resolveWith<Color>(getOverlayColor), ), focusNode: focusNode, onPressed: () { }, child: const Text('button'), ), ), ); FocusManager.instance.highlightStrategy = FocusHighlightStrategy.alwaysTraditional; await tester.pumpAndSettle(); final RenderObject inkFeatures = tester.allRenderObjects.firstWhere((RenderObject object) => object.runtimeType.toString() == '_RenderInkFeatures'); expect(inkFeatures, paints..rect(color: focusColor)); }); testWidgets('Does ElevatedButton contribute semantics', (WidgetTester tester) async { final SemanticsTester semantics = SemanticsTester(tester); await tester.pumpWidget( Directionality( textDirection: TextDirection.ltr, child: Material( child: Center( child: ElevatedButton( 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('ElevatedButton size is configurable by ThemeData.materialTapTargetSize', (WidgetTester tester) async { final ButtonStyle style = ButtonStyle( // Specifying minimumSize to mimic the original minimumSize for // RaisedButton so that the corresponding button size matches // the original version of this test. minimumSize: MaterialStateProperty.all<Size>(const Size(88, 36)), ); Widget buildFrame(MaterialTapTargetSize tapTargetSize, Key key) { return Theme( data: ThemeData(materialTapTargetSize: tapTargetSize), child: Directionality( textDirection: TextDirection.ltr, child: Material( child: Center( child: ElevatedButton( key: key, style: style, 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(88.0, 48.0)); final Key key2 = UniqueKey(); await tester.pumpWidget(buildFrame(MaterialTapTargetSize.shrinkWrap, key2)); expect(tester.getSize(find.byKey(key2)), const Size(88.0, 36.0)); }); testWidgets('ElevatedButton has no clip by default', (WidgetTester tester) async { await tester.pumpWidget( Directionality( textDirection: TextDirection.ltr, child: Material( child: ElevatedButton( onPressed: () { /* to make sure the button is enabled */ }, child: const Text('button'), ), ), ), ); expect( tester.renderObject(find.byType(ElevatedButton)), paintsExactlyCountTimes(#clipPath, 0), ); }); testWidgets('ElevatedButton 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: ElevatedButton( style: ButtonStyle( visualDensity: visualDensity, // Specifying minimumSize to mimic the original minimumSize for // RaisedButton so that the corresponding button size matches // the original version of this test. minimumSize: MaterialStateProperty.all<Size>(const Size(88, 36)), ), 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(132, 100))); 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(156, 124))); 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(108, 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(88, 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(112, 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(76, 36))); expect(childRect, equals(const Rect.fromLTRB(372.0, 293.0, 428.0, 307.0))); }); testWidgets('ElevatedButton.icon responds to applied padding', (WidgetTester tester) async { const Key buttonKey = Key('test'); const Key labelKey = Key('label'); await tester.pumpWidget( // When textDirection is set to TextDirection.ltr, the label appears on the // right side of the icon. This is important in determining whether the // horizontal padding is applied correctly later on Directionality( textDirection: TextDirection.ltr, child: Material( child: Center( child: ElevatedButton.icon( key: buttonKey, style: ButtonStyle( padding: MaterialStateProperty.all<EdgeInsets>(const EdgeInsets.fromLTRB(16, 5, 10, 12)), ), onPressed: () {}, icon: const Icon(Icons.add), label: const Text( 'Hello', key: labelKey, ), ), ), ), ), ); final Rect paddingRect = tester.getRect(find.byType(Padding)); final Rect labelRect = tester.getRect(find.byKey(labelKey)); final Rect iconRect = tester.getRect(find.byType(Icon)); // The right padding should be applied on the right of the label, whereas the // left padding should be applied on the left side of the icon. expect(paddingRect.right, labelRect.right + 10); expect(paddingRect.left, iconRect.left - 16); // Use the taller widget to check the top and bottom padding. final Rect tallerWidget = iconRect.height > labelRect.height ? iconRect : labelRect; expect(paddingRect.top, tallerWidget.top - 5); expect(paddingRect.bottom, tallerWidget.bottom + 12); }); group('Default ElevatedButton 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> paddingWithoutIconStart = <double, double>{ 0.5: 16, 1: 16, 1.25: 14, 1.5: 12, 2: 8, 2.5: 6, 3: 4, 4: 4, }; final Map<double, double> paddingWithoutIconEnd = <double, double>{ 0.5: 16, 1: 16, 1.25: 14, 1.5: 12, 2: 8, 2.5: 6, 3: 4, 4: 4, }; final Map<double, double> paddingWithIconStart = <double, double>{ 0.5: 12, 1: 12, 1.25: 11, 1.5: 10, 2: 8, 2.5: 8, 3: 8, 4: 8, }; final Map<double, double> paddingWithIconEnd = <double, double>{ 0.5: 16, 1: 16, 1.25: 14, 1.5: 12, 2: 8, 2.5: 6, 3: 4, 4: 4, }; 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, }; 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({ Rect parent, 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 = 'ElevatedButton' ', 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 ? ElevatedButton( key: buttonKey, onPressed: () {}, child: const Text('button', key: labelKey), ) : ElevatedButton.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 expectedStart = icon != null ? paddingWithIconStart[textScaleFactor] : paddingWithoutIconStart[textScaleFactor]; final double expectedEnd = icon != null ? paddingWithIconEnd[textScaleFactor] : paddingWithoutIconEnd[textScaleFactor]; final EdgeInsets expectedPadding = EdgeInsetsDirectional.fromSTEB(expectedStart, 0, expectedEnd, 0) .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 ElevatedButton 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: ElevatedButton( style: ElevatedButton.styleFrom(padding: const EdgeInsets.all(22)), onPressed: () {}, child: const Text('ElevatedButton') ), ), ), ); }, ), ), ); final Padding paddingWidget = tester.widget<Padding>( find.descendant( of: find.byType(ElevatedButton), matching: find.byType(Padding), ), ); expect(paddingWidget.padding, const EdgeInsets.all(22)); }); testWidgets('Elevated buttons animate elevation before color on disable', (WidgetTester tester) async { // This is a regression test for https://github.com/flutter/flutter/issues/387 const ColorScheme colorScheme = ColorScheme.light(); final Color backgroundColor = colorScheme.primary; final Color disabledBackgroundColor = colorScheme.onSurface.withOpacity(0.12); Widget buildFrame({ bool enabled }) { return MaterialApp( theme: ThemeData.from(colorScheme: colorScheme), home: Center( child: ElevatedButton( onPressed: enabled ? () { } : null, child: const Text('button'), ), ), ); } PhysicalShape physicalShape() { return tester.widget<PhysicalShape>( find.descendant( of: find.byType(ElevatedButton), matching: find.byType(PhysicalShape), ), ); } // Default elevation is 2, background color is primary. await tester.pumpWidget(buildFrame(enabled: true)); expect(physicalShape().elevation, 2); expect(physicalShape().color, backgroundColor); // Disabled elevation animates to 0 over 200ms, THEN the background // color changes to onSurface.withOpacity(0.12) await tester.pumpWidget(buildFrame(enabled: false)); await tester.pump(const Duration(milliseconds: 50)); expect(physicalShape().elevation, lessThan(2)); expect(physicalShape().color, backgroundColor); await tester.pump(const Duration(milliseconds: 150)); expect(physicalShape().elevation, 0); expect(physicalShape().color, backgroundColor); await tester.pumpAndSettle(); expect(physicalShape().elevation, 0); expect(physicalShape().color, disabledBackgroundColor); }); } 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; }