如何在不同屏幕尺寸上测试 Flutter 小部件?

问题描述：

我有一个 Flutter 小部件，它根据屏幕大小显示额外的数据.有谁知道在多种不同屏幕尺寸上测试这个小部件的方法吗?

I have a Flutter widget which shows extra data depending on the screen size. Does anyone know a way of testing this widget on multiple different screen sizes?

我已经浏览了 widget_tester 源代码，但找不到任何东西.

I've had a look through the widget_tester source code but can't find anything.

答

您可以使用 WidgetTester

以下代码将在屏幕尺寸为 42x42 的情况下运行测试

The following code will run a test with a screen size of 42x42

import 'package:flutter/widgets.dart';
import 'package:flutter_test/flutter_test.dart';

void main() {
  testWidgets("foo", (tester) async {
    tester.binding.window.physicalSizeTestValue = Size(42, 42);

    // resets the screen to its original size after the test end
    addTearDown(tester.binding.window.clearPhysicalSizeTestValue);

    // TODO: do something
  });
}

如何在不同屏幕尺寸上测试 Flutter 小部件?

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