[fenix] For https://github.com/mozilla-mobile/fenix/issues/18421 fix and re-enable verifyContextShareLink, verifyContextSaveImage and verifyContextMixedVariations UI tests

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

@@ -32,7 +32,6 @@ import org.mozilla.fenix.ui.robots.navigationToolbar
  *
  */
 
-@Ignore("Test failures: https://github.com/mozilla-mobile/fenix/issues/18421")
 class ContextMenusTest {
     private val mDevice = UiDevice.getInstance(InstrumentationRegistry.getInstrumentation())
     private lateinit var mockWebServer: MockWebServer
@@ -53,6 +52,7 @@ class ContextMenusTest {
         mockWebServer.shutdown()
     }
 
+    @Ignore("Test failures: https://github.com/mozilla-mobile/fenix/issues/18421")
     @Test
     fun verifyContextOpenLinkNewTab() {
         val pageLinks =
@@ -76,6 +76,7 @@ class ContextMenusTest {
         }
     }
 
+    @Ignore("Test failures: https://github.com/mozilla-mobile/fenix/issues/18421")
     @Test
     fun verifyContextOpenLinkPrivateTab() {
         val pageLinks =
@@ -177,7 +178,6 @@ class ContextMenusTest {
     }
 
     @Test
-    @Ignore("Intermittent: https://github.com/mozilla-mobile/fenix/issues/12309")
     fun verifyContextSaveImage() {
         val pageLinks =
             TestAssetHelper.getGenericAsset(mockWebServer, 4)
@@ -202,7 +202,6 @@ class ContextMenusTest {
     }
 
     @Test
-    @Ignore("Intermittent: https://github.com/mozilla-mobile/fenix/issues/12309")
     fun verifyContextMixedVariations() {
         val pageLinks =
             TestAssetHelper.getGenericAsset(mockWebServer, 4)

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

@@ -317,11 +317,31 @@ class BrowserRobot {
     }
 
     fun longClickMatchingText(expectedText: String) {
-        val mDevice = UiDevice.getInstance(InstrumentationRegistry.getInstrumentation())
-        mDevice.waitNotNull(Until.findObject(text(expectedText)), waitingTime)
+        try {
+            mDevice.waitForWindowUpdate(packageName, waitingTime)
+            mDevice.findObject(UiSelector().resourceId("$packageName:id/engineView"))
+                .waitForExists(waitingTime)
+            mDevice.findObject(UiSelector().textContains(expectedText)).waitForExists(waitingTime)
+            val link = mDevice.findObject(By.textContains(expectedText))
+            link.click(LONG_CLICK_DURATION)
+        } catch (e: NullPointerException) {
+            println(e)
 
-        val element = mDevice.findObject(text(expectedText))
-        element.click(LONG_CLICK_DURATION)
+            // Refresh the page in case the first long click didn't succeed
+            navigationToolbar {
+            }.openThreeDotMenu {
+            }.refreshPage {
+                mDevice.waitForIdle()
+            }
+
+            // Long click again the desired text
+            mDevice.waitForWindowUpdate(packageName, waitingTime)
+            mDevice.findObject(UiSelector().resourceId("$packageName:id/engineView"))
+                .waitForExists(waitingTime)
+            mDevice.findObject(UiSelector().textContains(expectedText)).waitForExists(waitingTime)
+            val link = mDevice.findObject(By.textContains(expectedText))
+            link.click(LONG_CLICK_DURATION)
+        }
     }
 
     fun longClickAndCopyText(expectedText: String, selectAll: Boolean = false) {