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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 'package:flutter/painting.dart';
import 'package:flutter/widgets.dart';
import '../flutter_test_alternative.dart';
void main() {
test('TextSpan equals', () {
const TextSpan a1 = TextSpan(text: 'a');
const TextSpan a2 = TextSpan(text: 'a');
const TextSpan b1 = TextSpan(children: <TextSpan>[ a1 ]);
const TextSpan b2 = TextSpan(children: <TextSpan>[ a2 ]);
const TextSpan c1 = TextSpan(text: null);
const TextSpan c2 = TextSpan(text: null);
expect(a1 == a2, isTrue);
expect(b1 == b2, isTrue);
expect(c1 == c2, isTrue);
expect(a1 == b2, isFalse);
expect(b1 == c2, isFalse);
expect(c1 == a2, isFalse);
expect(a1 == c2, isFalse);
expect(b1 == a2, isFalse);
expect(c1 == b2, isFalse);
});
test('TextSpan toStringDeep', () {
const TextSpan test = TextSpan(
text: 'a',
style: TextStyle(
fontSize: 10.0,
),
children: <TextSpan>[
TextSpan(
text: 'b',
children: <TextSpan>[
TextSpan(),
],
),
null,
TextSpan(
text: 'c',
),
],
);
expect(test.toStringDeep(), equals(
'TextSpan:\n'
' inherit: true\n'
' size: 10.0\n'
' "a"\n'
' TextSpan:\n'
' "b"\n'
' TextSpan:\n'
' (empty)\n'
' <null child>\n'
' TextSpan:\n'
' "c"\n'
));
});
test('TextSpan toPlainText', () {
const TextSpan textSpan = TextSpan(
text: 'a',
children: <TextSpan>[
TextSpan(text: 'b'),
TextSpan(text: 'c'),
],
);
expect(textSpan.toPlainText(), 'abc');
});
test('WidgetSpan toPlainText', () {
const TextSpan textSpan = TextSpan(
text: 'a',
children: <InlineSpan>[
TextSpan(text: 'b'),
WidgetSpan(child: SizedBox(width: 10, height: 10)),
TextSpan(text: 'c'),
],
);
expect(textSpan.toPlainText(), 'ab\uFFFCc');
});
test('TextSpan toPlainText with semanticsLabel', () {
const TextSpan textSpan = TextSpan(
text: 'a',
children: <TextSpan>[
TextSpan(text: 'b', semanticsLabel: 'foo'),
TextSpan(text: 'c'),
],
);
expect(textSpan.toPlainText(), 'afooc');
expect(textSpan.toPlainText(includeSemanticsLabels: false), 'abc');
});
test('TextSpan widget change test', () {
const TextSpan textSpan1 = TextSpan(
text: 'a',
children: <InlineSpan>[
TextSpan(text: 'b'),
WidgetSpan(child: SizedBox(width: 10, height: 10)),
TextSpan(text: 'c'),
],
);
const TextSpan textSpan2 = TextSpan(
text: 'a',
children: <InlineSpan>[
TextSpan(text: 'b'),
WidgetSpan(child: SizedBox(width: 10, height: 10)),
TextSpan(text: 'c'),
],
);
const TextSpan textSpan3 = TextSpan(
text: 'a',
children: <InlineSpan>[
TextSpan(text: 'b'),
WidgetSpan(child: SizedBox(width: 11, height: 10)),
TextSpan(text: 'c'),
],
);
const TextSpan textSpan4 = TextSpan(
text: 'a',
children: <InlineSpan>[
TextSpan(text: 'b'),
WidgetSpan(child: Text('test')),
TextSpan(text: 'c'),
],
);
const TextSpan textSpan5 = TextSpan(
text: 'a',
children: <InlineSpan>[
TextSpan(text: 'b'),
WidgetSpan(child: Text('different!')),
TextSpan(text: 'c'),
],
);
const TextSpan textSpan6 = TextSpan(
text: 'a',
children: <InlineSpan>[
TextSpan(text: 'b'),
WidgetSpan(
child: SizedBox(width: 10, height: 10),
alignment: PlaceholderAlignment.top,
),
TextSpan(text: 'c'),
],
);
expect(textSpan1.compareTo(textSpan3), RenderComparison.layout);
expect(textSpan1.compareTo(textSpan4), RenderComparison.layout);
expect(textSpan1.compareTo(textSpan1), RenderComparison.identical);
expect(textSpan2.compareTo(textSpan2), RenderComparison.identical);
expect(textSpan3.compareTo(textSpan3), RenderComparison.identical);
expect(textSpan2.compareTo(textSpan3), RenderComparison.layout);
expect(textSpan4.compareTo(textSpan5), RenderComparison.layout);
expect(textSpan3.compareTo(textSpan5), RenderComparison.layout);
expect(textSpan2.compareTo(textSpan5), RenderComparison.layout);
expect(textSpan1.compareTo(textSpan5), RenderComparison.layout);
expect(textSpan1.compareTo(textSpan6), RenderComparison.layout);
});
test('TextSpan nested widget change test', () {
const TextSpan textSpan1 = TextSpan(
text: 'a',
children: <InlineSpan>[
TextSpan(text: 'b'),
WidgetSpan(
child: Text.rich(
TextSpan(
children: <InlineSpan>[
WidgetSpan(child: SizedBox(width: 10, height: 10)),
TextSpan(text: 'The sky is falling :)'),
],
),
),
),
TextSpan(text: 'c'),
],
);
const TextSpan textSpan2 = TextSpan(
text: 'a',
children: <InlineSpan>[
TextSpan(text: 'b'),
WidgetSpan(
child: Text.rich(
TextSpan(
children: <InlineSpan>[
WidgetSpan(child: SizedBox(width: 10, height: 11)),
TextSpan(text: 'The sky is falling :)'),
],
),
),
),
TextSpan(text: 'c'),
],
);
expect(textSpan1.compareTo(textSpan2), RenderComparison.layout);
expect(textSpan1.compareTo(textSpan1), RenderComparison.identical);
expect(textSpan2.compareTo(textSpan2), RenderComparison.identical);
});
test('GetSpanForPosition with WidgetSpan', () {
const TextSpan textSpan = TextSpan(
text: 'a',
children: <InlineSpan>[
TextSpan(text: 'b'),
WidgetSpan(
child: Text.rich(
TextSpan(
children: <InlineSpan>[
WidgetSpan(child: SizedBox(width: 10, height: 10)),
TextSpan(text: 'The sky is falling :)'),
],
),
),
),
TextSpan(text: 'c'),
],
);
expect(textSpan.getSpanForPosition(const TextPosition(offset: 0)).runtimeType, TextSpan);
expect(textSpan.getSpanForPosition(const TextPosition(offset: 1)).runtimeType, TextSpan);
expect(textSpan.getSpanForPosition(const TextPosition(offset: 2)).runtimeType, WidgetSpan);
expect(textSpan.getSpanForPosition(const TextPosition(offset: 3)).runtimeType, TextSpan);
});
test('TextSpan with a null child should throw FlutterError', () {
const TextSpan text = TextSpan(
text: 'foo bar',
children: <InlineSpan>[
null,
],
);
FlutterError error;
try {
text.computeToPlainText(StringBuffer());
} on FlutterError catch (e) {
error = e;
}
expect(error, isNotNull);
expect(error.toStringDeep(),
'FlutterError\n'
' TextSpan contains a null child.\n'
' A TextSpan object with a non-null child list should not have any\n'
' nulls in its child list.\n'
' The full text in question was:\n'
' TextSpan("foo bar")\n'
);
});
}