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// 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>[
const FontVariation('FILL', 0.0),
const FontVariation('wght', 400.0),
const FontVariation('GRAD', 0.0),
const FontVariation('opsz', 48.0)
]);
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)
]);
});
testWidgets('Fill, weight, grade, and optical size can be set at the theme-level', (WidgetTester tester) async {
await tester.pumpWidget(
const Directionality(
textDirection: TextDirection.ltr,
child: IconTheme(
data: IconThemeData(
fill: 0.2,
weight: 3.0,
grade: 4.0,
opticalSize: 5.0,
),
child: Icon(Icons.abc),
),
),
);
final RichText text = tester.widget(find.byType(RichText));
expect(text.text.style!.fontVariations, <FontVariation>[
const FontVariation('FILL', 0.2),
const FontVariation('wght', 3.0),
const FontVariation('GRAD', 4.0),
const FontVariation('opsz', 5.0)
]);
});
testWidgets('Theme-level fill, weight, grade, and optical size can be overridden', (WidgetTester tester) async {
await tester.pumpWidget(
const Directionality(
textDirection: TextDirection.ltr,
child: IconTheme(
data: IconThemeData(
fill: 0.2,
weight: 3.0,
grade: 4.0,
opticalSize: 5.0,
),
child: Icon(Icons.abc, fill: 0.6, weight: 7.0, grade: 8.0, opticalSize: 9.0),
),
),
);
final RichText text = tester.widget(find.byType(RichText));
expect(text.text.style!.fontVariations, isNotNull);
expect(text.text.style!.fontVariations, <FontVariation>[
const FontVariation('FILL', 0.6),
const FontVariation('wght', 7.0),
const FontVariation('GRAD', 8.0),
const FontVariation('opsz', 9.0)
]);
});
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);
});
}