1 files changed, 30 insertions, 0 deletions
diff --git a/Xamarin.Forms.Core.UnitTests/MockViewModel.cs b/Xamarin.Forms.Core.UnitTests/MockViewModel.cs
new file mode 100644
index 00000000..da2f6f96
--- /dev/null
+++ b/Xamarin.Forms.Core.UnitTests/MockViewModel.cs
@@ -0,0 +1,30 @@
+using System.ComponentModel;
+using System.Runtime.CompilerServices;
+
+namespace Xamarin.Forms.Core.UnitTests
+{
+	internal class MockViewModel
+		: INotifyPropertyChanged
+	{
+		public event PropertyChangedEventHandler PropertyChanged;
+
+		string text;
+		public virtual string Text {
+			get { return text; }
+			set {
+				if (text == value)
+					return;
+
+				text = value;
+				OnPropertyChanged ("Text");
+			}
+		}
+
+		protected void OnPropertyChanged ([CallerMemberName] string propertyName = null)
+		{
+			PropertyChangedEventHandler handler = PropertyChanged;
+			if (handler != null)
+				handler (this, new PropertyChangedEventArgs (propertyName));
+		}
+	}
+}