android - 使用 MotionLayout 制作 Espresso

Question

我最近尝试过MotionLayout，但Espresso由于将我的转换ConstraintLayout为MotionLayout.

这是一个重现的示例：

我的浓缩咖啡测试：

@RunWith(AndroidJUnit4::class)
@LargeTest
class SplashActivityTest {

    @get:Rule
    val rule = ActivityScenarioRule(SplashActivity::class.java)
    private val splashScreenWaitingTime = 2000L

    @Test
    fun imageViewHasAnImagePassedByClientThroughMetaData() {
        onView(withId(R.id.appIcon)).check(matches(isDisplayed()))
    }

    @Test
    fun textViewHasAppNamePassedByClientThroughMetaData() {
        onView(withId(R.id.appName)).check(matches(isDisplayed()))
    }
}

我的布局文件：

<androidx.constraintlayout.motion.widget.MotionLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/splashLayout"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    app:layoutDescription="@xml/splash_scene">

    <androidx.appcompat.widget.AppCompatImageView
        android:id="@+id/appIcon"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        app:srcCompat="@drawable/app_icon"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        app:layout_constraintBottom_toBottomOf="parent"/>

    <androidx.appcompat.widget.AppCompatTextView
        android:id="@+id/appName"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:gravity="center_horizontal"
        android:textAppearance="@style/TextAppearance.AppCompat.Headline"
        android:text="@string/app_name"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintTop_toBottomOf="@id/appIcon"/>

</androidx.constraintlayout.motion.widget.MotionLayout>

我的动态场景是：

<MotionScene xmlns:android="http://schemas.android.com/apk/res/android"
             xmlns:motion="http://schemas.android.com/apk/res-auto">

    <Transition
        motion:constraintSetStart="@+id/start"
        motion:constraintSetEnd="@+id/end"
        motion:duration="2000"
        motion:autoTransition="animateToEnd">
    </Transition>

    <ConstraintSet android:id="@+id/start">
        <Constraint
            android:id="@+id/appIcon"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            motion:layout_constraintStart_toStartOf="parent"
            motion:layout_constraintEnd_toEndOf="parent"
            motion:layout_constraintTop_toTopOf="parent"
            motion:layout_constraintBottom_toBottomOf="parent"/>
        <Constraint
            android:id="@+id/appName"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:gravity="center_horizontal"
            motion:layout_constraintStart_toStartOf="parent"
            motion:layout_constraintEnd_toEndOf="parent"
            motion:layout_constraintTop_toBottomOf="@id/appIcon">
            <CustomAttribute
                motion:attributeName="textSize"
                motion:customFloatValue="24" />
        </Constraint>
    </ConstraintSet>

    <ConstraintSet android:id="@+id/end">
        <Constraint
            android:id="@+id/appIcon"
            android:layout_width="300dp"
            android:layout_height="300dp"
            motion:layout_constraintStart_toStartOf="parent"
            motion:layout_constraintEnd_toEndOf="parent"
            motion:layout_constraintTop_toTopOf="parent"
            motion:layout_constraintBottom_toBottomOf="parent"/>
        <Constraint
            android:id="@+id/appName"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:gravity="center_horizontal"
            motion:layout_constraintStart_toStartOf="parent"
            motion:layout_constraintEnd_toEndOf="parent"
            motion:layout_constraintTop_toBottomOf="@id/appIcon">
            <CustomAttribute
                motion:attributeName="textSize"
                motion:customFloatValue="43" />
        </Constraint>
    </ConstraintSet>
</MotionScene>

并且测试失败并出现以下错误：

androidx.test.espresso.NoMatchingViewException: No views in hierarchy found matching: with id: <package>:id/appIcon

注意：测试ConstraintLayout在activity_splash文件中时通过了。