[UITestst] Add QueryUntilNotPresent

Xamarin.Forms.Controls.Issues/Xamarin.Forms.Controls.Issues.Shared/Issue3840.cs

@@ -91,7 +91,7 @@ public void TranslatingViewKeepsScrollViewPosition()
 			Assert.AreEqual(0, label[0].Rect.Height);
 			Assert.AreEqual(0, label[0].Rect.Width);
 #else
-			RunningApp.WaitForNoElement(_failedText);
+			var result = RunningApp.QueryUntilNotPresent(() => RunningApp.Query(_failedText));
 #endif
 		}
 #endif

Xamarin.Forms.Core.UITests.Shared/Utilities/AppExtensions.cs

@@ -68,6 +68,25 @@ public static T[] QueryUntilPresent<T>(
 			return results;
 		}
 
+		public static T[] QueryUntilNotPresent<T>(
+			this IApp app,
+			Func<T[]> func,
+			int retryCount = 10,
+			int delayInMs = 2000)
+		{
+			var results = func();
+
+			int counter = 0;
+			while ((results != null || results.Length > 0) && counter < retryCount)
+			{
+				Thread.Sleep(delayInMs);
+				results = func();
+				counter++;
+			}
+
+			return results;
+		}
+
 		public static bool IsApiHigherThan(this IApp app, int apiLevel, string apiLabelId = "ApiLevel")
 		{
 			var api = Convert.ToInt32(app.WaitForElement("ApiLabel")[0].ReadText());