android - 如何使用express编写recyclerview拖放的测试用例

Question

我正在为 recyclerview 编写测试用例。我在 recyclerview 中进行了拖放测试。我以某种方式尝试过。但无法为 recyclerview 编写拖放测试。

在 recyclerview 中我有拖动按钮。使用该按钮，我将某个位置上的项目拖放到其他位置。

我的从下到上滑动的代码

onView(withId(R.id.recyclerView)).perform(
                    RecyclerViewActions.actionOnItemAtPosition(0, new GeneralSwipeAction(
                            Swipe.SLOW, GeneralLocation.BOTTOM_CENTER, GeneralLocation.TOP_CENTER,
                            Press.FINGER)));

这段代码是滑动recyclerview。

所以我尝试这样:

onView(withId(R.id.recyclerView)).perform(
                RecyclerViewActions.actionOnItemAtPosition(0,
                        MyViewAction.clickChildViewWithId(R.id.img_drag)),new GeneralSwipeAction(
                        Swipe.SLOW, GeneralLocation.TOP_RIGHT, GeneralLocation.CENTER_RIGHT,
                        Press.FINGER));

但这对我来说不是锻炼。请告诉我任何测试拖放功能的想法。

Answer 1

您编写的代码首先单击拖动 handle ，然后从第一个项目的右上角滑动到其右中位置。如果您想拖放一个项目，您将需要多个自定义 CoordinatesProvider。

1. RecyclerViewCooperativesProvider 将查找 RecyclerView 中某个项目的坐标:

class RecyclerViewCoordinatesProvider(private val position: Int, private val childItemCoordinatesProvider: CoordinatesProvider) : CoordinatesProvider {
    override fun calculateCoordinates(view: View): FloatArray {
        return childItemCoordinatesProvider.calculateCoordinates((view as RecyclerView).layoutManager!!.findViewByPosition(position)!!)
    }
}

ChildViewCooperativesProvider 将查找具有给定 id 的子项的坐标:

class ChildViewCoordinatesProvider(private val childViewId: Int, private val insideChildViewCoordinatesProvider: CoordinatesProvider) : CoordinatesProvider {
    override fun calculateCoordinates(view: View): FloatArray {
        return insideChildViewCoordinatesProvider.calculateCoordinates(view.findViewById<View>(childViewId))
    }
}

最后，我们将创建新的自定义常规位置，它将提供 View 上方和下方的坐标(我假设我们在 LinearLayoutManager 内重新排序):

enum class CustomGeneralLocation : CoordinatesProvider {
    UNDER_RIGHT {
        override fun calculateCoordinates(view: View): FloatArray {
            val screenLocation = IntArray(2)
            view.getLocationOnScreen(screenLocation)
            return floatArrayOf(screenLocation[0] + view.width - 1f, screenLocation[1] + view.height * 1.5f)
        }
    },
    ABOVE_RIGHT {
        override fun calculateCoordinates(view: View): FloatArray {
            val screenLocation = IntArray(2)
            view.getLocationOnScreen(screenLocation)
            return floatArrayOf(screenLocation[0] + view.width - 1f, screenLocation[1] - view.height * 0.5f)
        }

    }
}

现在，如果您要将项目从原始位置拖动到目标位置，其中RecyclerView的ID为server_list 且拖动 handle 的ID为drag_handle，使用以下方法:

private fun reorder(from: Int, to: Int) {
        onView(withId(R.id.server_list)).perform(GeneralSwipeAction(
                Swipe.SLOW,
                RecyclerViewCoordinatesProvider(from, ChildViewCoordinatesProvider(R.id.drag_handle, GeneralLocation.CENTER)),
                RecyclerViewCoordinatesProvider(to, if (from < to) CustomGeneralLocation.UNDER_RIGHT else CustomGeneralLocation.ABOVE_RIGHT),
                Press.FINGER))
    }