gestures_test.dart 1.21 KB
Newer Older
Ian Hickson's avatar
Ian Hickson committed
1
// Copyright 2014 The Flutter Authors. All rights reserved.
2 3 4 5 6 7 8 9 10 11
// 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_test/flutter_test.dart';

import '../widgets/gestures.dart';

void main() {
  testWidgets('Tap on center change color', (WidgetTester tester) async {
12
    await tester.pumpWidget(const Directionality(
13
      textDirection: TextDirection.ltr,
14
      child: GestureDemo(),
15
    ));
16 17 18
    final Finder finder = find.byType(GestureDemo);

    MaterialColor getSwatch() => tester.state<GestureDemoState>(finder).swatch;
19
    Future<void> tap() async {
20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38
      final Offset topLeft = tester.getTopLeft(finder);
      await tester.tapAt(tester.getSize(finder).center(topLeft));
      await tester.pump(const Duration(seconds: 1));
    }

    // initial swatch
    expect(getSwatch(), GestureDemoState.kSwatches[0]);

    // every tap change swatch
    for (int i = 1; i < GestureDemoState.kSwatches.length; i++) {
      await tap();
      expect(getSwatch(), GestureDemoState.kSwatches[i]);
    }

    // tap on last swatch display first swatch
    await tap();
    expect(getSwatch(), GestureDemoState.kSwatches[0]);
  });
}