如何对作用于加速度计的 Android Activity 进行单元测试? [英] How can I unit test an Android Activity that acts on Accelerometer?

问题描述

我从一个基于这个 ShakeActivity 的活动开始，我想写一些对其进行单元测试.我之前为 Android 活动编写了一些小型单元测试，但我不确定从哪里开始.我想为加速度计提供一些不同的值并测试活动如何响应它.现在我保持简单，只是在摇动"事件发生时更新一个私有的 int 计数器变量和一个 TextView.

I am starting with an Activity based off of this ShakeActivity and I want to write some unit tests for it. I have written some small unit tests for Android activities before but I'm not sure where to start here. I want to feed the accelerometer some different values and test how the activity responds to it. For now I'm keeping it simple and just updating a private int counter variable and a TextView when a "shake" event happens.

所以我的问题主要归结为:

So my question largely boils down to this:

如何将单元测试中的虚假数据发送到加速度计?

推荐答案

我的解决方案最终比我预期的要简单得多.我并没有真正测试加速度计，而是测试应用程序对加速度计引发的事件的响应，我只需要进行相应的测试.我的班级实现了 SensorListener，我想测试 onSensorChanged 会发生什么.关键是输入一些值并检查我的活动状态.示例:

My solution to this ended up way simpler then I expected. I'm not really testing the accelerometer so much as I am testing the application's response to an event raised by the accelerometer, and I just needed to test accordingly. My class implements SensorListener and I wanted to test what happens onSensorChanged. The key then was to feed in some values and check my Activity's state. Example:

public void testShake() throws InterruptedException {
    mShaker.onSensorChanged(SensorManager.SENSOR_ACCELEROMETER, new float[] {0, 0, 0} );
    //Required because method only allows one shake per 100ms
    Thread.sleep(500);
    mShaker.onSensorChanged(SensorManager.SENSOR_ACCELEROMETER, new float[] {300, 300, 300});
    Assert.assertTrue("Counter: " + mShaker.shakeCounter, mShaker.shakeCounter > 0);
}

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