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水平滚动视图的浓缩咖啡测试

android-espresso android

Ali · 技术社区 · 7 年前

我有以下水平滚动视图,我以编程方式将项目添加到其中:

<?xml version="1.0" encoding="utf-8"?>
<layout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto">

    <data>

        <variable
            name="vm"
            type="com.sample.android.tmdb.ui.detail.MovieDetailViewModel" />
    </data>

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:orientation="vertical"
        app:visibleGone="@{vm.isTrailersVisible}">

        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="@string/trailers"
            android:textAppearance="@style/TextAppearance.AppCompat.Title" />

        <HorizontalScrollView
            android:id="@+id/trailer_scroll_view"
            android:layout_width="match_parent"
            android:layout_height="wrap_content">

            <LinearLayout
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:orientation="horizontal"
                app:items="@{vm.trailers}" />

        </HorizontalScrollView>

    </LinearLayout>

</layout>

在这里我添加了一些项目:

@JvmStatic
@BindingAdapter("items")
fun addItems(linearLayout: LinearLayout, trailers: List<Video>) {

    linearLayout.removeAllViews()
    val context = linearLayout.context

    for (trailer in trailers) {
        val thumbContainer = context.layoutInflater.inflate(R.layout.video, linearLayout, false)
        val thumbView = thumbContainer.findViewById<ImageView>(R.id.video_thumb)

        thumbView.apply {
            setOnClickListener {
                val playVideoIntent = Intent(Intent.ACTION_VIEW, Uri.parse(Video.getUrl(trailer)))
                context.startActivity(playVideoIntent)
            }
        }
        linearLayout.addView(thumbContainer)
    }
}

现在我想添加一个 Espresso HorizontalScrollView 然后点击第三项。直到现在我写了以下测试:

@Test
    fun shouldBeAbleToDisplayTrailer() {
        onView(withId(R.id.list)).perform(RecyclerViewActions
                .actionOnItemAtPosition<MovieViewHolder>(8, click()))

        onView(withId(R.id.trailer_scroll_view)).perform(nestedScrollTo()).check(matches(isDisplayed()))

        // intended(Matcher<Intent> matcher) asserts the given matcher matches one and only one
        // intent sent by the application.
        //intended(allOf(hasAction(Intent.ACTION_VIEW)))
    }

但我不知道怎么滚动 . 你能帮忙吗?

1 回复 | 直到 7 年前

denys 7 年前

答案就在两下:

支票 scrollTo() 查看操作执行:

public static ViewAction scrollTo() {
    return actionWithAssertions(new ScrollToAction());
}

支票 ScrollToAction() 实施:

/** Enables scrolling to the given view. View must be a descendant of a ScrollView or ListView. */

为了它。我同意描述可以稍加改进:

withEffectiveVisibility(Visibility.VISIBLE),
isDescendantOfA(
    anyOf(
        isAssignableFrom(ScrollView.class),
        isAssignableFrom(HorizontalScrollView.class),
        isAssignableFrom(ListView.class))));

答案是-使用 ViewActions.scrollTo() HorizontalScrollView .