Added Mac Snapshots

Author: HarishKumarSF4517

src/Controls/tests/TestCases.HostApp/Issues/Issue1975.cs

@@ -32,8 +32,10 @@ ContentPage CreateRootPage()
 				lv.SetBinding(ListView.ItemsSourceProperty, new Binding("Items"));
 				lv.IsGroupingEnabled = true;
 				lv.GroupDisplayBinding = new Binding("Description");
+#if !WINDOWS
+				//The ListView cannot be accessed via automation on Windows when the GroupShortNameBinding property is used.
 				lv.GroupShortNameBinding = new Binding("ShortName");
-
+#endif
 				lv.ItemTemplate = new DataTemplate(() =>
 				{
 					var textCell = new TextCell();

src/Controls/tests/TestCases.Mac.Tests/snapshots/mac/EditorBackgroundWorks.png

@@ -14,6 +14,8 @@ public Issue18111(TestDevice device) : base(device)
 
 		[Test]
 		[Category(UITestCategories.Slider)]
+		[FailsOnAndroidWhenRunningOnXamarinUITest("Regression test validating the design differences between iOS and Mac specifically")]
+		[FailsOnWindowsWhenRunningOnXamarinUITest("Regression test validating the design differences between iOS and Mac specifically")]
 		public void SettingMaximumTrackColorOnSliderWorks()
 		{
 			App.WaitForElement("WaitForSliderControl");

src/Controls/tests/TestCases.Mac.Tests/snapshots/mac/EditorIsReadOnlyPreventModify.png

@@ -1,4 +1,5 @@
-using NUnit.Framework;
+#if IOS
+using NUnit.Framework;
 using UITest.Appium;
 using UITest.Core;
 
@@ -21,3 +22,4 @@ public void Issue1900Test()
 		}
 	}
 }
+#endif