1 files changed, 40 insertions, 0 deletions
diff --git a/Xamarin.Forms.Core.UnitTests/UnitPlatform.cs b/Xamarin.Forms.Core.UnitTests/UnitPlatform.cs
new file mode 100644
index 00000000..8dbf3e04
--- /dev/null
+++ b/Xamarin.Forms.Core.UnitTests/UnitPlatform.cs
@@ -0,0 +1,40 @@
+using System;
+
+namespace Xamarin.Forms.Core.UnitTests
+{
+	public class UnitPlatform : IPlatform
+	{
+		Page page;
+		Func<VisualElement, double, double, SizeRequest> getNativeSizeFunc;
+		readonly bool useRealisticLabelMeasure;
+
+		public UnitPlatform (Func<VisualElement, double, double, SizeRequest> getNativeSizeFunc = null, bool useRealisticLabelMeasure = false)
+		{
+			this.getNativeSizeFunc = getNativeSizeFunc;
+			this.useRealisticLabelMeasure = useRealisticLabelMeasure;
+		}
+
+		public SizeRequest GetNativeSize (VisualElement view, double widthConstraint, double heightConstraint)
+		{
+			if (getNativeSizeFunc != null)
+				return getNativeSizeFunc (view, widthConstraint, heightConstraint);
+			// EVERYTHING IS 100 x 20
+
+			var label = view as Label;
+			if (label != null && useRealisticLabelMeasure) {
+				var letterSize = new Size (5, 10);
+				var w = label.Text.Length * letterSize.Width;
+				var h = letterSize.Height;
+				if (!double.IsPositiveInfinity (widthConstraint) && w > widthConstraint) {
+					h = ((int) w / (int) widthConstraint) * letterSize.Height;
+					w = widthConstraint - (widthConstraint % letterSize.Width);
+
+				}
+				return new SizeRequest (new Size (w, h), new Size (Math.Min (10, w), h));
+			}
+
+			return new SizeRequest(new Size (100, 20));
+		}
+	}
+	
+}