androidx.test.espresso.NoMatchingViewException: No views in hierarchy found matching

Issue

I'm trying to test my fragment with Espresso. No matter what view I'm trying to test I get NoMatchingViewException, I'm 100% sure that the view actually exists on the fragment. This is my test:

@LargeTest
@ExperimentalCoroutinesApi
@RunWith(AndroidJUnit4::class)
class ExploreFragmentTest {
    private lateinit var blogRepository: FakeBlogRepository
    private lateinit var inAppMessagesRepository: FakeInAppMessageRepository
    private lateinit var fakeFarRetailsRepository: FakeFarRetailsRepository
    private lateinit var fakeUserProfileRepository: FakeUserProfileRepository

    @Before
    fun initRepository() {
        blogRepository = FakeBlogRepository()
        inAppMessagesRepository = FakeInAppMessageRepository()
        fakeFarRetailsRepository = FakeFarRetailsRepository()
        fakeUserProfileRepository = FakeUserProfileRepository()

        ServiceLocator.blogRepository = blogRepository
        ServiceLocator.inAppMessagesRepository = inAppMessagesRepository
        ServiceLocator.userProfileRepository = fakeUserProfileRepository
    }

    @Test
    fun noRetailsNearby_displaysNoRetailsNearbyLayout() = runBlockingTest {
        // GIVEN - A fake repository with far retails
        ServiceLocator.retailsRepository = fakeFarRetailsRepository
        // WHEN - ExploreFragment launched to display retails
        launchFragmentInContainer<ExploreFragment>(null, R.style.AppTheme)
        // THEN - No retails layout is displayed on the screen
        onView(withId(R.id.clExploreContainer)).check(matches(isDisplayed()))
    }
}

This is the layout of the related fragment:

<?xml version="1.0" encoding="utf-8"?>
<androidx.coordinatorlayout.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android"
        android:id="@id/clExploreContainer"
        xmlns:app="http://schemas.android.com/apk/res-auto"
        xmlns:tools="http://schemas.android.com/tools"
        android:layout_width="match_parent"
        android:layout_height="match_parent">

    <com.google.android.material.appbar.AppBarLayout
            android:id="@+id/ablExplore"
            android:layout_width="match_parent"
            android:layout_height="@dimen/toolbar_height"
            android:background="@android:color/transparent"
            android:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar">

        <com.google.android.material.appbar.CollapsingToolbarLayout
                android:id="@+id/ctlExploreHeader"
                android:layout_width="match_parent"
                android:layout_height="match_parent"
                android:fitsSystemWindows="true"
                app:contentScrim="?attr/colorPrimary"
                app:layout_scrollFlags="scroll|exitUntilCollapsed"
                app:statusBarScrim="@android:color/transparent"
                app:toolbarId="@+id/tbExplore">

            <ImageView
                    android:id="@+id/ivHeaderLemon"
                    android:layout_width="match_parent"
                    android:layout_height="match_parent"
                    android:background="@color/colorPrimary"
                    android:scaleType="centerCrop"
                    android:src="@drawable/bg_main"
                    app:layout_collapseMode="parallax" />

            <androidx.appcompat.widget.Toolbar
                    android:id="@+id/tbExplore"
                    android:layout_width="match_parent"
                    android:layout_height="@dimen/collapsed_toolbar_height"
                    app:layout_collapseMode="pin"
                    app:layout_constraintEnd_toEndOf="parent"
                    app:layout_constraintStart_toStartOf="parent"
                    app:layout_constraintTop_toTopOf="parent" />

            <androidx.constraintlayout.widget.ConstraintLayout
                    android:id="@+id/collapsing_logo"
                    android:layout_width="match_parent"
                    android:layout_height="wrap_content"
                    android:layout_gravity="bottom"
                    android:layout_marginStart="20dp"
                    android:minHeight="?attr/actionBarSize">

                <ImageView
                        android:id="@+id/ivLogo"
                        android:layout_width="@dimen/toolbar_logo_width"
                        android:layout_height="@dimen/toolbar_logo_height"
                        android:adjustViewBounds="true"
                        android:scaleType="fitStart"
                        android:src="@drawable/myfoody_logo"
                        app:layout_constraintBottom_toBottomOf="parent"
                        app:layout_constraintStart_toStartOf="parent"
                        app:layout_constraintTop_toTopOf="parent" />
            </androidx.constraintlayout.widget.ConstraintLayout>

        </com.google.android.material.appbar.CollapsingToolbarLayout>
    </com.google.android.material.appbar.AppBarLayout>

    <androidx.core.widget.NestedScrollView
            android:id="@+id/svExplore"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            app:layout_behavior="@string/appbar_scrolling_view_behavior"
            app:layout_constraintBottom_toBottomOf="parent"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintTop_toTopOf="parent">

        <androidx.constraintlayout.widget.ConstraintLayout
                android:id="@+id/clExploreContainer"
                android:layout_width="match_parent"
                android:layout_height="wrap_content">

            <include
                    android:id="@+id/miniInAppMessageLayout"
                    layout="@layout/mini_in_app_message_layout"
                    android:layout_width="0dp"
                    android:layout_height="wrap_content"
                    android:visibility="gone"
                    app:layout_constraintEnd_toEndOf="parent"
                    app:layout_constraintHorizontal_bias="0.0"
                    app:layout_constraintStart_toStartOf="parent"
                    app:layout_constraintTop_toTopOf="parent"
                    tools:visibility="visible" />

            <include
                    android:id="@+id/tutorialLayout"
                    layout="@layout/tutorial_layout"
                    android:layout_width="0dp"
                    android:layout_height="wrap_content"
                    android:layout_marginStart="20dp"
                    android:layout_marginTop="32dp"
                    android:layout_marginEnd="20dp"
                    android:visibility="gone"
                    app:layout_constraintEnd_toEndOf="parent"
                    app:layout_constraintStart_toStartOf="parent"
                    app:layout_constraintTop_toBottomOf="@id/miniInAppMessageLayout"
                    tools:visibility="visible" />

            <include
                    android:id="@+id/nearToMeLayout"
                    layout="@layout/near_to_me_layout"
                    android:layout_width="0dp"
                    android:layout_height="wrap_content"
                    app:layout_constraintEnd_toEndOf="parent"
                    app:layout_constraintStart_toStartOf="parent"
                    app:layout_constraintTop_toBottomOf="@+id/tutorialLayout" />

            <include
                    android:id="@+id/favouritesLayout"
                    layout="@layout/favourites_layout"
                    android:layout_width="0dp"
                    android:layout_height="wrap_content"
                    android:layout_marginTop="@dimen/section_explore_margin_top"
                    android:visibility="gone"
                    app:layout_constraintEnd_toEndOf="parent"
                    app:layout_constraintStart_toStartOf="parent"
                    app:layout_constraintTop_toBottomOf="@+id/nearToMeLayout"
                    tools:visibility="visible" />

            <androidx.fragment.app.FragmentContainerView
                    android:id="@+id/flCompanyMessageFragment"
                    android:name="com.anagramma.myfoody.fragments.explore.blog.RecipesFragment"
                    android:layout_width="0dp"
                    android:layout_height="wrap_content"
                    android:layout_marginTop="@dimen/section_explore_margin_top"
                    app:layout_constraintEnd_toEndOf="parent"
                    app:layout_constraintStart_toStartOf="parent"
                    app:layout_constraintTop_toBottomOf="@+id/favouritesLayout" />

            <androidx.constraintlayout.widget.ConstraintLayout
                    android:id="@+id/clRemoteMessagesContainer"
                    android:layout_width="match_parent"
                    android:layout_height="wrap_content"
                    app:layout_constraintEnd_toEndOf="parent"
                    app:layout_constraintStart_toStartOf="parent"
                    app:layout_constraintTop_toBottomOf="@id/flCompanyMessageFragment">

                <include
                        android:id="@+id/rcmlExplore"
                        layout="@layout/remote_config_message_layout_explore"
                        android:layout_width="0dp"
                        android:layout_height="wrap_content"
                        android:visibility="gone"
                        app:layout_constraintEnd_toEndOf="parent"
                        app:layout_constraintStart_toStartOf="parent"
                        app:layout_constraintTop_toTopOf="parent"
                        tools:visibility="visible" />

                <include
                        android:id="@+id/lMeetMyBrandBannerExplore"
                        layout="@layout/meet_my_brand_banner"
                        android:layout_width="0dp"
                        android:layout_height="wrap_content"
                        android:layout_marginTop="@dimen/section_explore_margin_top"
                        android:visibility="gone"
                        app:layout_constraintEnd_toEndOf="parent"
                        app:layout_constraintStart_toStartOf="parent"
                        app:layout_constraintTop_toTopOf="parent" />

            </androidx.constraintlayout.widget.ConstraintLayout>

            <androidx.fragment.app.FragmentContainerView
                    android:id="@+id/flLastArticles"
                    android:name="com.anagramma.myfoody.fragments.explore.blog.LastArticlesFragment"
                    android:layout_width="0dp"
                    android:layout_height="wrap_content"
                    android:layout_marginTop="@dimen/section_explore_margin_top"
                    app:layout_constraintEnd_toEndOf="parent"
                    app:layout_constraintStart_toStartOf="parent"
                    app:layout_constraintTop_toBottomOf="@+id/clRemoteMessagesContainer"
                    tools:layout="@layout/fragment_explore_blog_section" />

            <androidx.fragment.app.FragmentContainerView
                    android:id="@+id/flLiveSustainable"
                    android:name="com.anagramma.myfoody.fragments.explore.blog.LiveSustainableFragment"
                    android:layout_width="0dp"
                    android:layout_height="wrap_content"
                    android:layout_marginTop="@dimen/section_explore_margin_top"
                    app:layout_constraintEnd_toEndOf="parent"
                    app:layout_constraintStart_toStartOf="parent"
                    app:layout_constraintTop_toBottomOf="@+id/flLastArticles"
                    tools:layout="@layout/fragment_explore_blog_section" />

            <androidx.fragment.app.FragmentContainerView
                    android:id="@+id/flMyFoodyWorld"
                    android:name="com.anagramma.myfoody.fragments.explore.blog.MyFoodyWorldFragment"
                    android:layout_width="0dp"
                    android:layout_height="wrap_content"
                    android:layout_marginTop="@dimen/section_explore_margin_top"
                    app:layout_constraintEnd_toEndOf="parent"
                    app:layout_constraintStart_toStartOf="parent"
                    app:layout_constraintTop_toBottomOf="@+id/flLiveSustainable"
                    tools:layout="@layout/fragment_explore_blog_section" />

            <androidx.fragment.app.FragmentContainerView
                    android:id="@+id/fAutoProduction"
                    android:name="com.anagramma.myfoody.fragments.explore.blog.AutoproductionFragment"
                    android:layout_width="0dp"
                    android:layout_height="wrap_content"
                    android:layout_marginTop="@dimen/section_explore_margin_top"
                    app:layout_constraintEnd_toEndOf="parent"
                    app:layout_constraintStart_toStartOf="parent"
                    app:layout_constraintTop_toBottomOf="@+id/flMyFoodyWorld"
                    tools:layout="@layout/fragment_explore_blog_section" />

        </androidx.constraintlayout.widget.ConstraintLayout>

    </androidx.core.widget.NestedScrollView>
</androidx.coordinatorlayout.widget.CoordinatorLayout>

Every time I run the test I get this error: androidx.test.espresso.NoMatchingViewException: No views in hierarchy found matching: with id: com.anagramma.myfoody.staging:id/clExploreContainer, can't understand why. Am I missing something related to espresso framework?

Solution

My problem was that my fragment had a DialogFragment covering the entire original fragment view during its startup. Since DialogFragment has another lifecycle, my Espresso test wasn't finding any view on the parent fragment (ExploreFragment). Once removed the DialogFragment view matching turned out fine in my test.

Answered By - Nicola Gallazzi