// 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 'dart:ui'; import 'package:flutter/material.dart'; import 'package:flutter_test/flutter_test.dart'; import 'semantics_tester.dart'; void main() { testWidgets('Can set opacity for an Icon', (WidgetTester tester) async { await tester.pumpWidget( const Directionality( textDirection: TextDirection.ltr, child: IconTheme( data: IconThemeData( color: Color(0xFF666666), opacity: 0.5, ), child: Icon(IconData(0xd0a0, fontFamily: 'Arial')), ), ), ); final RichText text = tester.widget(find.byType(RichText)); expect(text.text.style!.color, const Color(0xFF666666).withOpacity(0.5)); }); testWidgets('Icon sizing - no theme, default size', (WidgetTester tester) async { await tester.pumpWidget( const Directionality( textDirection: TextDirection.ltr, child: Center( child: Icon(null), ), ), ); final RenderBox renderObject = tester.renderObject(find.byType(Icon)); expect(renderObject.size, equals(const Size.square(24.0))); }); testWidgets('Icon sizing - no theme, explicit size', (WidgetTester tester) async { await tester.pumpWidget( const Directionality( textDirection: TextDirection.ltr, child: Center( child: Icon( null, size: 96.0, ), ), ), ); final RenderBox renderObject = tester.renderObject(find.byType(Icon)); expect(renderObject.size, equals(const Size.square(96.0))); }); testWidgets('Icon sizing - sized theme', (WidgetTester tester) async { await tester.pumpWidget( const Directionality( textDirection: TextDirection.ltr, child: Center( child: IconTheme( data: IconThemeData(size: 36.0), child: Icon(null), ), ), ), ); final RenderBox renderObject = tester.renderObject(find.byType(Icon)); expect(renderObject.size, equals(const Size.square(36.0))); }); testWidgets('Icon sizing - sized theme, explicit size', (WidgetTester tester) async { await tester.pumpWidget( const Directionality( textDirection: TextDirection.ltr, child: Center( child: IconTheme( data: IconThemeData(size: 36.0), child: Icon( null, size: 48.0, ), ), ), ), ); final RenderBox renderObject = tester.renderObject(find.byType(Icon)); expect(renderObject.size, equals(const Size.square(48.0))); }); testWidgets('Icon sizing - sizeless theme, default size', (WidgetTester tester) async { await tester.pumpWidget( const Directionality( textDirection: TextDirection.ltr, child: Center( child: IconTheme( data: IconThemeData(), child: Icon(null), ), ), ), ); final RenderBox renderObject = tester.renderObject(find.byType(Icon)); expect(renderObject.size, equals(const Size.square(24.0))); }); testWidgets('Icon with custom font', (WidgetTester tester) async { await tester.pumpWidget( const Directionality( textDirection: TextDirection.ltr, child: Center( child: Icon(IconData(0x41, fontFamily: 'Roboto')), ), ), ); final RichText richText = tester.firstWidget(find.byType(RichText)); expect(richText.text.style!.fontFamily, equals('Roboto')); }); testWidgets('Icon with semantic label', (WidgetTester tester) async { final SemanticsTester semantics = SemanticsTester(tester); await tester.pumpWidget( const Directionality( textDirection: TextDirection.ltr, child: Center( child: Icon( Icons.title, semanticLabel: 'a label', ), ), ), ); expect(semantics, includesNodeWith(label: 'a label')); semantics.dispose(); }); testWidgets('Null icon with semantic label', (WidgetTester tester) async { final SemanticsTester semantics = SemanticsTester(tester); await tester.pumpWidget( const Directionality( textDirection: TextDirection.ltr, child: Center( child: Icon( null, semanticLabel: 'a label', ), ), ), ); expect(semantics, includesNodeWith(label: 'a label')); semantics.dispose(); }); testWidgets("Changing semantic label from null doesn't rebuild tree ", (WidgetTester tester) async { await tester.pumpWidget( const Directionality( textDirection: TextDirection.ltr, child: Center( child: Icon(Icons.time_to_leave), ), ), ); final Element richText1 = tester.element(find.byType(RichText)); await tester.pumpWidget( const Directionality( textDirection: TextDirection.ltr, child: Center( child: Icon( Icons.time_to_leave, semanticLabel: 'a label', ), ), ), ); final Element richText2 = tester.element(find.byType(RichText)); // Compare a leaf Element in the Icon subtree before and after changing the // semanticLabel to make sure the subtree was not rebuilt. expect(richText2, same(richText1)); }); testWidgets('IconData comparison', (WidgetTester tester) async { expect(const IconData(123), const IconData(123)); expect(const IconData(123), isNot(const IconData(123, matchTextDirection: true))); expect(const IconData(123), isNot(const IconData(123, fontFamily: 'f'))); expect(const IconData(123), isNot(const IconData(123, fontPackage: 'p'))); expect(const IconData(123).hashCode, const IconData(123).hashCode); expect(const IconData(123).hashCode, isNot(const IconData(123, matchTextDirection: true).hashCode)); expect(const IconData(123).hashCode, isNot(const IconData(123, fontFamily: 'f').hashCode)); expect(const IconData(123).hashCode, isNot(const IconData(123, fontPackage: 'p').hashCode)); expect(const IconData(123).toString(), 'IconData(U+0007B)'); }); testWidgets('Fill, weight, grade, and optical size variations are passed', (WidgetTester tester) async { await tester.pumpWidget( const Directionality( textDirection: TextDirection.ltr, child: Icon(Icons.abc), ), ); RichText text = tester.widget(find.byType(RichText)); expect(text.text.style!.fontVariations, <FontVariation>[]); await tester.pumpWidget( const Directionality( textDirection: TextDirection.ltr, child: Icon(Icons.abc, fill: 0.5, weight: 300, grade: 200, opticalSize: 48), ), ); text = tester.widget(find.byType(RichText)); expect(text.text.style!.fontVariations, isNotNull); expect(text.text.style!.fontVariations, <FontVariation>[ const FontVariation('FILL', 0.5), const FontVariation('wght', 300.0), const FontVariation('GRAD', 200.0), const FontVariation('opsz', 48.0) ]); }); test('Throws if given invalid values', () { expect(() => Icon(Icons.abc, fill: -0.1), throwsAssertionError); expect(() => Icon(Icons.abc, fill: 1.1), throwsAssertionError); expect(() => Icon(Icons.abc, weight: -0.1), throwsAssertionError); expect(() => Icon(Icons.abc, weight: 0.0), throwsAssertionError); expect(() => Icon(Icons.abc, opticalSize: -0.1), throwsAssertionError); expect(() => Icon(Icons.abc, opticalSize: 0), throwsAssertionError); }); }