flutter - 如何在 flutter 测试中模拟 onDoubleTap

Question

我正在尝试编写 flutter 测试并模拟双选项卡。但我无法设法找到方法。
这是我现在所做的:

void main() {
  testWidgets('It should trigger onDoubleTap', (tester) async {
    await tester.pumpWidget(MaterialApp(
      home: GestureDetector(
        child: const Text('button'),
        onDoubleTap: () {
          print('double tapped');
        },
      ),
    ));

    await tester.pumpAndSettle();
    await tester.tap(find.text('button')); // <- Tried with tester.press too
    await tester.tap(find.text('button')); // <- Tried with tester.press too
    await tester.pumpAndSettle();
  });
}

当我运行测试时，这是我得到的:

00:03 +1: All tests passed!                                                                                              

但我没有看到任何 double tapped在控制台中。

如何触发双击？

Answer 1

解决方法是等待kDoubleTapMinTime两个水龙头之间。

void main() {
  testWidgets('It should trigger onDoubleTap', (tester) async {
    await tester.pumpWidget(MaterialApp(
      home: GestureDetector(
        child: const Text('button'),
        onDoubleTap: () {
          print('double tapped');
        },
      ),
    ));

    await tester.pumpAndSettle();
    await tester.tap(find.text('button'));
    await tester.pump(kDoubleTapMinTime); // <- Add this
    await tester.tap(find.text('button'));
    await tester.pumpAndSettle();
  });
}

我收到了 double tapped在控制台中:

double tapped
00:03 +1: All tests passed!