flutter_flutter/packages/flutter/test/widget/semantics_2_test.dart

// Copyright 2015 The Chromium 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/widgets.dart';
import 'package:flutter_test/flutter_test.dart';

import 'semantics_tester.dart';

void main() {
  testWidgets('Semantics 2', (WidgetTester tester) async {
    SemanticsTester semantics = new SemanticsTester(tester);

    // this test is the same as the test in Semantics 1, but
    // starting with the second branch being ignored and then
    // switching to not ignoring it.

    // forking semantics
    await tester.pumpWidget(
      new Column(
        children: <Widget>[
          new Container(
            height: 10.0,
            child: new Semantics(label: 'child1')
          ),
          new Container(
            height: 10.0,
            child: new IgnorePointer(
              ignoring: false,
              child: new Semantics(label: 'child2')
            )
          ),
        ],
        crossAxisAlignment: CrossAxisAlignment.stretch
      )
    );

    expect(semantics, hasSemantics(
      new TestSemantics(
        id: 0,
        children: <TestSemantics>[
          new TestSemantics(
            id: 1,
            label: 'child1',
            rect: new Rect.fromLTRB(0.0, 0.0, 800.0, 10.0),
          ),
          new TestSemantics(
            id: 2,
            label: 'child2',
            rect: new Rect.fromLTRB(0.0, 0.0, 800.0, 10.0),
            transform: new Matrix4.translationValues(0.0, 10.0, 0.0),
          ),
        ],
      )
    ));

    // toggle a branch off
    await tester.pumpWidget(
      new Column(
        children: <Widget>[
          new Container(
            height: 10.0,
            child: new Semantics(label: 'child1')
          ),
          new Container(
            height: 10.0,
            child: new IgnorePointer(
              ignoring: true,
              child: new Semantics(label: 'child2')
            )
          ),
        ],
        crossAxisAlignment: CrossAxisAlignment.stretch
      )
    );

    expect(semantics, hasSemantics(new TestSemantics(id: 0, label: 'child1')));

    // toggle a branch back on
    await tester.pumpWidget(
      new Column(
        children: <Widget>[
          new Container(
            height: 10.0,
            child: new Semantics(label: 'child1')
          ),
          new Container(
            height: 10.0,
            child: new IgnorePointer(
              ignoring: false,
              child: new Semantics(label: 'child2')
            )
          ),
        ],
        crossAxisAlignment: CrossAxisAlignment.stretch
      )
    );

    expect(semantics, hasSemantics(
      new TestSemantics(
        id: 0,
        children: <TestSemantics>[
          new TestSemantics(
            id: 3,
            label: 'child1',
            rect: new Rect.fromLTRB(0.0, 0.0, 800.0, 10.0),
          ),
          new TestSemantics(
            id: 2,
            label: 'child2',
            rect: new Rect.fromLTRB(0.0, 0.0, 800.0, 10.0),
            transform: new Matrix4.translationValues(0.0, 10.0, 0.0),
          ),
        ],
      )
    ));

    semantics.dispose();
  });
}