[fenix] For https://github.com/mozilla-mobile/fenix/issues/18053 Change and fix Intermittent UI test verifyReaderViewToggle

app/src/androidTest/java/org/mozilla/fenix/ui/ReaderViewTest.kt

@@ -5,22 +5,22 @@
 package org.mozilla.fenix.ui
 
 import android.view.View
+import androidx.test.espresso.IdlingRegistry
 import okhttp3.mockwebserver.MockWebServer
 import org.junit.After
 import org.junit.Before
+import org.junit.Ignore
 import org.junit.Rule
 import org.junit.Test
-import org.mozilla.fenix.ui.robots.navigationToolbar
-import androidx.test.espresso.IdlingRegistry
-import org.junit.Ignore
 import org.mozilla.fenix.FeatureFlags
 import org.mozilla.fenix.R
 import org.mozilla.fenix.helpers.AndroidAssetDispatcher
-import org.mozilla.fenix.helpers.ViewVisibilityIdlingResource
 import org.mozilla.fenix.helpers.HomeActivityIntentTestRule
 import org.mozilla.fenix.helpers.TestAssetHelper
+import org.mozilla.fenix.helpers.ViewVisibilityIdlingResource
 import org.mozilla.fenix.ui.robots.browserScreen
 import org.mozilla.fenix.ui.robots.mDevice
+import org.mozilla.fenix.ui.robots.navigationToolbar
 
 /**
  *  Tests for verifying basic functionality of content context menus
@@ -125,6 +125,15 @@ class ReaderViewTest {
             toggleReaderView()
             mDevice.waitForIdle()
         }
+        browserScreen {
+            verifyPageContent(estimatedReadingTime)
+        }
+        navigationToolbar {
+            verifyCloseReaderViewDetected(true)
+            toggleReaderView()
+            mDevice.waitForIdle()
+            verifyReaderViewDetected(true)
+        }
 
         if (!FeatureFlags.toolbarMenuFeature) {
             browserScreen {
@@ -134,6 +143,7 @@ class ReaderViewTest {
             }.closeBrowserMenuToBrowser { }
         }
 
+        if (!FeatureFlags.toolbarMenuFeature) {
             navigationToolbar {
                 toggleReaderView()
                 mDevice.waitForIdle()
@@ -141,6 +151,7 @@ class ReaderViewTest {
                 verifyReaderViewAppearance(false)
             }.close { }
         }
+    }
 
     @Test
     @Ignore("To be re-implemented in https://github.com/mozilla-mobile/fenix/issues/17971")

app/src/androidTest/java/org/mozilla/fenix/ui/robots/NavigationToolbarRobot.kt

@@ -11,7 +11,6 @@ import androidx.recyclerview.widget.RecyclerView
 import androidx.test.espresso.Espresso.onView
 import androidx.test.espresso.IdlingRegistry
 import androidx.test.espresso.IdlingResource
-import androidx.test.espresso.ViewInteraction
 import androidx.test.espresso.action.ViewActions
 import androidx.test.espresso.action.ViewActions.pressImeActionButton
 import androidx.test.espresso.action.ViewActions.replaceText
@@ -60,12 +59,21 @@ class NavigationToolbarRobot {
 
     fun verifyTabButtonShortcutMenuItems() = assertTabButtonShortcutMenuItems()
 
-    fun verifyReaderViewDetected(visible: Boolean = false): ViewInteraction =
+    fun verifyReaderViewDetected(visible: Boolean = false) =
         assertReaderViewDetected(visible)
 
+    fun verifyCloseReaderViewDetected(visible: Boolean = false) =
+        assertCloseReaderViewDetected(visible)
+
     fun typeSearchTerm(searchTerm: String) = awesomeBar().perform(typeText(searchTerm))
 
-    fun toggleReaderView() = readerViewToggle().click()
+    fun toggleReaderView() {
+        mDevice.findObject(UiSelector()
+            .resourceId("$packageName:id/mozac_browser_toolbar_page_actions"))
+            .waitForExists(waitingTime)
+
+        readerViewToggle().click()
+    }
 
     class Transition {
 
@@ -312,7 +320,11 @@ private fun goBackButton() = mDevice.pressBack()
 private fun readerViewToggle() =
     onView(withParent(withId(R.id.mozac_browser_toolbar_page_actions)))
 
-private fun assertReaderViewDetected(visible: Boolean) =
+private fun assertReaderViewDetected(visible: Boolean) {
+    mDevice.findObject(UiSelector()
+        .description("Reader view"))
+        .waitForExists(waitingTime)
+
     onView(
         allOf(
             withParent(withId(R.id.mozac_browser_toolbar_page_actions)),
@@ -322,6 +334,23 @@ private fun assertReaderViewDetected(visible: Boolean) =
         if (visible) matches(withEffectiveVisibility(ViewMatchers.Visibility.VISIBLE))
         else ViewAssertions.doesNotExist()
     )
+}
+
+private fun assertCloseReaderViewDetected(visible: Boolean) {
+    mDevice.findObject(UiSelector()
+        .description("Close reader view"))
+        .waitForExists(waitingTime)
+
+    onView(
+        allOf(
+            withParent(withId(R.id.mozac_browser_toolbar_page_actions)),
+            withContentDescription("Close reader view")
+        )
+    ).check(
+        if (visible) matches(withEffectiveVisibility(ViewMatchers.Visibility.VISIBLE))
+        else ViewAssertions.doesNotExist()
+    )
+}
 
 inline fun runWithIdleRes(ir: IdlingResource?, pendingCheck: () -> Unit) {
     try {