default_text_style_test.dart 3.67 KB
Newer Older
Ian Hickson's avatar
Ian Hickson committed
1
// Copyright 2014 The Flutter Authors. All rights reserved.
2 3 4
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

5 6
import 'dart:ui' as ui show TextHeightBehavior;

7
import 'package:flutter/widgets.dart';
8
import 'package:flutter_test/flutter_test.dart';
9 10 11

void main() {
  testWidgets('DefaultTextStyle changes propagate to Text', (WidgetTester tester) async {
12 13
    const Text textWidget = Text('Hello', textDirection: TextDirection.ltr);
    const TextStyle s1 = TextStyle(
14 15 16 17 18 19 20
      fontSize: 10.0,
      fontWeight: FontWeight.w800,
      height: 123.0,
    );

    await tester.pumpWidget(const DefaultTextStyle(
      style: s1,
Ian Hickson's avatar
Ian Hickson committed
21
      child: textWidget,
22 23 24 25 26 27 28 29 30 31 32 33
    ));

    RichText text = tester.firstWidget(find.byType(RichText));
    expect(text, isNotNull);
    expect(text.text.style, s1);

    await tester.pumpWidget(const DefaultTextStyle(
      style: s1,
      textAlign: TextAlign.justify,
      softWrap: false,
      overflow: TextOverflow.fade,
      maxLines: 3,
34
      child: textWidget,
35 36 37 38 39 40 41 42 43 44
    ));

    text = tester.firstWidget(find.byType(RichText));
    expect(text, isNotNull);
    expect(text.text.style, s1);
    expect(text.textAlign, TextAlign.justify);
    expect(text.softWrap, false);
    expect(text.overflow, TextOverflow.fade);
    expect(text.maxLines, 3);
  });
45 46

  testWidgets('AnimatedDefaultTextStyle changes propagate to Text', (WidgetTester tester) async {
47 48
    const Text textWidget = Text('Hello', textDirection: TextDirection.ltr);
    const TextStyle s1 = TextStyle(
49 50 51 52
      fontSize: 10.0,
      fontWeight: FontWeight.w800,
      height: 123.0,
    );
53
    const TextStyle s2 = TextStyle(
54 55 56 57 58 59 60
      fontSize: 20.0,
      fontWeight: FontWeight.w200,
      height: 1.0,
    );

    await tester.pumpWidget(const AnimatedDefaultTextStyle(
      style: s1,
61
      duration: Duration(milliseconds: 1000),
62
      child: textWidget,
63 64 65 66 67 68 69 70 71
    ));

    final RichText text1 = tester.firstWidget(find.byType(RichText));
    expect(text1, isNotNull);
    expect(text1.text.style, s1);
    expect(text1.textAlign, TextAlign.start);
    expect(text1.softWrap, isTrue);
    expect(text1.overflow, TextOverflow.clip);
    expect(text1.maxLines, isNull);
72 73
    expect(text1.textWidthBasis, TextWidthBasis.parent);
    expect(text1.textHeightBehavior, isNull);
74 75 76 77 78 79 80

    await tester.pumpWidget(const AnimatedDefaultTextStyle(
      style: s2,
      textAlign: TextAlign.justify,
      softWrap: false,
      overflow: TextOverflow.fade,
      maxLines: 3,
81 82
      textWidthBasis: TextWidthBasis.longestLine,
      textHeightBehavior: ui.TextHeightBehavior(applyHeightToFirstAscent: false),
83
      duration: Duration(milliseconds: 1000),
84
      child: textWidget,
85 86 87 88 89 90 91 92 93
    ));

    final RichText text2 = tester.firstWidget(find.byType(RichText));
    expect(text2, isNotNull);
    expect(text2.text.style, s1); // animation hasn't started yet
    expect(text2.textAlign, TextAlign.justify);
    expect(text2.softWrap, false);
    expect(text2.overflow, TextOverflow.fade);
    expect(text2.maxLines, 3);
94 95
    expect(text2.textWidthBasis, TextWidthBasis.longestLine);
    expect(text2.textHeightBehavior, const ui.TextHeightBehavior(applyHeightToFirstAscent: false));
96 97 98 99 100 101 102 103 104 105

    await tester.pump(const Duration(milliseconds: 1000));

    final RichText text3 = tester.firstWidget(find.byType(RichText));
    expect(text3, isNotNull);
    expect(text3.text.style, s2); // animation has now finished
    expect(text3.textAlign, TextAlign.justify);
    expect(text3.softWrap, false);
    expect(text3.overflow, TextOverflow.fade);
    expect(text3.maxLines, 3);
106 107
    expect(text2.textWidthBasis, TextWidthBasis.longestLine);
    expect(text2.textHeightBehavior, const ui.TextHeightBehavior(applyHeightToFirstAscent: false));
108
  });
109
}