如何在 Android 中对手势进行单元测试？

发布于 2024-09-28 21:08:16 字数 68 浏览 5 评论 0原文

我想在 Android 中对屏幕上向左/向右滑动的操作进行单元测试，但我找不到任何相关文档。有人可以帮忙吗？还可以做到吗？

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一瞬间的火花 2024-10-05 21:08:16

通常，触摸将执行一个操作，您将测试该操作，而不是触摸本身。

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带上头具痛哭 2024-10-05 21:08:16

我发现你的问题试图学习如何对完全相同类型的手势做完全相同的事情。我能够使用以下方法运行非常纯粹的单元测试。换句话说，单元测试 View.OnTouchListener.onTouch(View v, Event event) 函数。

以下是我如何“模拟”View 和 Event 以便运行 onTouch

import android.os.Looper;
import android.test.mock.MockContext;
import android.view.MotionEvent;
import android.view.ViewStub;
import junit.framework.TestCase;

public class SwipeDetectorTest extends TestCase {
    public void testOnTouch() throws Exception {
         class MyMockContext extends MockContext {
            public Looper getMainLooper() {
                return Looper.getMainLooper();
            }
        }
        MyMockContext context = new MyMockContext();
        View v = new ViewStub(context);
        int x = 0; int y = 0;

        // simulated down event
        MotionEvent event = 
            MotionEvent.obtain(1, 0, MotionEvent.ACTION_DOWN, x, y, 0);
        SwipeDetector swipeDetector = new SwipeDetector();
        assertFalse(swipeDetector.onTouch(v, event));

        x = 30; y = 0;
        event = 
           MotionEvent.obtain(1, 1, MotionEvent.ACTION_MOVE, x, y, 0);
        boolean action = swipeDetector.onTouch(v, event);
        assertTrue(action);

        boolean result = swipeDetector.getSwipeHorizontal()
            .equals(SwipeDetector.Action.LeftToRight);
        assertTrue(result);
    }
}

I found your question trying to learn how to do the exact same thing for the exact same type of gesture. I was able to run pretty pure unit tests using the following approach. In other words unit test View.OnTouchListener.onTouch(View v, Event event) function.

Here is how I was able to "mock" the View and Event in order to run onTouch

import android.os.Looper;
import android.test.mock.MockContext;
import android.view.MotionEvent;
import android.view.ViewStub;
import junit.framework.TestCase;

public class SwipeDetectorTest extends TestCase {
    public void testOnTouch() throws Exception {
         class MyMockContext extends MockContext {
            public Looper getMainLooper() {
                return Looper.getMainLooper();
            }
        }
        MyMockContext context = new MyMockContext();
        View v = new ViewStub(context);
        int x = 0; int y = 0;

        // simulated down event
        MotionEvent event = 
            MotionEvent.obtain(1, 0, MotionEvent.ACTION_DOWN, x, y, 0);
        SwipeDetector swipeDetector = new SwipeDetector();
        assertFalse(swipeDetector.onTouch(v, event));

        x = 30; y = 0;
        event = 
           MotionEvent.obtain(1, 1, MotionEvent.ACTION_MOVE, x, y, 0);
        boolean action = swipeDetector.onTouch(v, event);
        assertTrue(action);

        boolean result = swipeDetector.getSwipeHorizontal()
            .equals(SwipeDetector.Action.LeftToRight);
        assertTrue(result);
    }
}

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