1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
// 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/rendering.dart';
import 'package:flutter_test/flutter_test.dart';
void main() {
test('copyWith, ==, hashCode basics', () {
expect(const NavigationBarThemeData(), const NavigationBarThemeData().copyWith());
expect(const NavigationBarThemeData().hashCode, const NavigationBarThemeData().copyWith().hashCode);
});
testWidgets('Default debugFillProperties', (WidgetTester tester) async {
final DiagnosticPropertiesBuilder builder = DiagnosticPropertiesBuilder();
const NavigationBarThemeData().debugFillProperties(builder);
final List<String> description = builder.properties
.where((DiagnosticsNode node) => !node.isFiltered(DiagnosticLevel.info))
.map((DiagnosticsNode node) => node.toString())
.toList();
expect(description, <String>[]);
});
testWidgets('Custom debugFillProperties', (WidgetTester tester) async {
final DiagnosticPropertiesBuilder builder = DiagnosticPropertiesBuilder();
const NavigationBarThemeData(
height: 200.0,
backgroundColor: Color(0x00000099),
elevation: 20.0,
indicatorColor: Color(0x00000098),
indicatorShape: CircleBorder(),
labelTextStyle: MaterialStatePropertyAll<TextStyle>(TextStyle(fontSize: 7.0)),
iconTheme: MaterialStatePropertyAll<IconThemeData>(IconThemeData(color: Color(0x00000097))),
labelBehavior: NavigationDestinationLabelBehavior.alwaysHide,
).debugFillProperties(builder);
final List<String> description = builder.properties
.where((DiagnosticsNode node) => !node.isFiltered(DiagnosticLevel.info))
.map((DiagnosticsNode node) => node.toString())
.toList();
expect(description[0], 'height: 200.0');
expect(description[1], 'backgroundColor: Color(0x00000099)');
expect(description[2], 'elevation: 20.0');
expect(description[3], 'indicatorColor: Color(0x00000098)');
expect(description[4], 'indicatorShape: CircleBorder(BorderSide(width: 0.0, style: none))');
expect(description[5], 'labelTextStyle: MaterialStatePropertyAll(TextStyle(inherit: true, size: 7.0))');
// Ignore instance address for IconThemeData.
expect(description[6].contains('iconTheme: MaterialStatePropertyAll(IconThemeData'), isTrue);
expect(description[6].contains('(color: Color(0x00000097))'), isTrue);
expect(description[7], 'labelBehavior: NavigationDestinationLabelBehavior.alwaysHide');
});
testWidgets('NavigationBarThemeData values are used when no NavigationBar properties are specified', (WidgetTester tester) async {
const double height = 200.0;
const Color backgroundColor = Color(0x00000001);
const double elevation = 42.0;
const Color indicatorColor = Color(0x00000002);
const ShapeBorder indicatorShape = CircleBorder();
const double selectedIconSize = 25.0;
const double unselectedIconSize = 23.0;
const Color selectedIconColor = Color(0x00000003);
const Color unselectedIconColor = Color(0x00000004);
const double selectedIconOpacity = 0.99;
const double unselectedIconOpacity = 0.98;
const double selectedLabelFontSize = 13.0;
const double unselectedLabelFontSize = 11.0;
const NavigationDestinationLabelBehavior labelBehavior = NavigationDestinationLabelBehavior.alwaysShow;
await tester.pumpWidget(
MaterialApp(
home: Scaffold(
bottomNavigationBar: NavigationBarTheme(
data: NavigationBarThemeData(
height: height,
backgroundColor: backgroundColor,
elevation: elevation,
indicatorColor: indicatorColor,
indicatorShape: indicatorShape,
iconTheme: MaterialStateProperty.resolveWith((Set<MaterialState> states) {
if (states.contains(MaterialState.selected)) {
return const IconThemeData(
size: selectedIconSize,
color: selectedIconColor,
opacity: selectedIconOpacity,
);
}
return const IconThemeData(
size: unselectedIconSize,
color: unselectedIconColor,
opacity: unselectedIconOpacity,
);
}),
labelTextStyle: MaterialStateProperty.resolveWith((Set<MaterialState> states) {
if (states.contains(MaterialState.selected)) {
return const TextStyle(fontSize: selectedLabelFontSize);
}
return const TextStyle(fontSize: unselectedLabelFontSize);
}),
labelBehavior: labelBehavior,
),
child: NavigationBar(
destinations: _destinations(),
),
),
),
),
);
expect(_barHeight(tester), height);
expect(_barMaterial(tester).color, backgroundColor);
expect(_barMaterial(tester).elevation, elevation);
expect(_indicator(tester)?.color, indicatorColor);
expect(_indicator(tester)?.shape, indicatorShape);
expect(_selectedIconTheme(tester).size, selectedIconSize);
expect(_selectedIconTheme(tester).color, selectedIconColor);
expect(_selectedIconTheme(tester).opacity, selectedIconOpacity);
expect(_unselectedIconTheme(tester).size, unselectedIconSize);
expect(_unselectedIconTheme(tester).color, unselectedIconColor);
expect(_unselectedIconTheme(tester).opacity, unselectedIconOpacity);
expect(_selectedLabelStyle(tester).fontSize, selectedLabelFontSize);
expect(_unselectedLabelStyle(tester).fontSize, unselectedLabelFontSize);
expect(_labelBehavior(tester), labelBehavior);
});
testWidgets('NavigationBar values take priority over NavigationBarThemeData values when both properties are specified', (WidgetTester tester) async {
const double height = 200.0;
const Color backgroundColor = Color(0x00000001);
const double elevation = 42.0;
const NavigationDestinationLabelBehavior labelBehavior = NavigationDestinationLabelBehavior.alwaysShow;
await tester.pumpWidget(
MaterialApp(
home: Scaffold(
bottomNavigationBar: NavigationBarTheme(
data: const NavigationBarThemeData(
height: 100.0,
elevation: 18.0,
backgroundColor: Color(0x00000099),
labelBehavior: NavigationDestinationLabelBehavior.alwaysHide,
),
child: NavigationBar(
height: height,
elevation: elevation,
backgroundColor: backgroundColor,
labelBehavior: labelBehavior,
destinations: _destinations(),
),
),
),
),
);
expect(_barHeight(tester), height);
expect(_barMaterial(tester).color, backgroundColor);
expect(_barMaterial(tester).elevation, elevation);
expect(_labelBehavior(tester), labelBehavior);
});
}
List<NavigationDestination> _destinations() {
return const <NavigationDestination>[
NavigationDestination(
icon: Icon(Icons.favorite_border),
selectedIcon: Icon(Icons.favorite),
label: 'Abc',
),
NavigationDestination(
icon: Icon(Icons.star_border),
selectedIcon: Icon(Icons.star),
label: 'Def',
),
];
}
double _barHeight(WidgetTester tester) {
return tester.getRect(
find.byType(NavigationBar),
).height;
}
Material _barMaterial(WidgetTester tester) {
return tester.firstWidget<Material>(
find.descendant(
of: find.byType(NavigationBar),
matching: find.byType(Material),
),
);
}
ShapeDecoration? _indicator(WidgetTester tester) {
return tester.firstWidget<Container>(
find.descendant(
of: find.byType(FadeTransition),
matching: find.byType(Container),
),
).decoration as ShapeDecoration?;
}
IconThemeData _selectedIconTheme(WidgetTester tester) {
return _iconTheme(tester, Icons.favorite);
}
IconThemeData _unselectedIconTheme(WidgetTester tester) {
return _iconTheme(tester, Icons.star_border);
}
IconThemeData _iconTheme(WidgetTester tester, IconData icon) {
return tester.firstWidget<IconTheme>(
find.ancestor(
of: find.byIcon(icon),
matching: find.byType(IconTheme),
),
).data;
}
TextStyle _selectedLabelStyle(WidgetTester tester) {
return tester.widget<RichText>(
find.descendant(
of: find.text('Abc'),
matching: find.byType(RichText),
),
).text.style!;
}
TextStyle _unselectedLabelStyle(WidgetTester tester) {
return tester.widget<RichText>(
find.descendant(
of: find.text('Def'),
matching: find.byType(RichText),
),
).text.style!;
}
NavigationDestinationLabelBehavior _labelBehavior(WidgetTester tester) {
if (_opacityAboveLabel('Abc').evaluate().isNotEmpty && _opacityAboveLabel('Def').evaluate().isNotEmpty) {
return _labelOpacity(tester, 'Abc') == 1
? NavigationDestinationLabelBehavior.onlyShowSelected
: NavigationDestinationLabelBehavior.alwaysHide;
} else {
return NavigationDestinationLabelBehavior.alwaysShow;
}
}
Finder _opacityAboveLabel(String text) {
return find.ancestor(
of: find.text(text),
matching: find.byType(Opacity),
);
}
// Only valid when labelBehavior != alwaysShow.
double _labelOpacity(WidgetTester tester, String text) {
final Opacity opacityWidget = tester.widget<Opacity>(
find.ancestor(
of: find.text(text),
matching: find.byType(Opacity),
),
);
return opacityWidget.opacity;
}