2 files changed, 58 insertions, 0 deletions
diff --git a/Xamarin.Forms.Xaml.UnitTests/Issues/Unreported007.xaml b/Xamarin.Forms.Xaml.UnitTests/Issues/Unreported007.xaml
new file mode 100644
index 00000000..4132f908
--- /dev/null
+++ b/Xamarin.Forms.Xaml.UnitTests/Issues/Unreported007.xaml
@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<ContentPage xmlns="http://xamarin.com/schemas/2014/forms"
+		xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
+		x:Class="Xamarin.Forms.Xaml.UnitTests.Unreported007">
+
+	<Label Text="Foo" x:Name="label">
+		<RelativeLayout.XConstraint>
+			<OnPlatform x:TypeArguments="Constraint" Android="{ConstraintExpression Type=Constant,Constant=6}" iOS="{ConstraintExpression Type=Constant,Constant=3}" />
+		</RelativeLayout.XConstraint>
+	</Label>
+</ContentPage>
diff --git a/Xamarin.Forms.Xaml.UnitTests/Issues/Unreported007.xaml.cs b/Xamarin.Forms.Xaml.UnitTests/Issues/Unreported007.xaml.cs
new file mode 100644
index 00000000..279deed4
--- /dev/null
+++ b/Xamarin.Forms.Xaml.UnitTests/Issues/Unreported007.xaml.cs
@@ -0,0 +1,47 @@
+using System;
+using System.Collections.Generic;
+using NUnit.Framework;
+using Xamarin.Forms;
+using Xamarin.Forms.Core.UnitTests;
+
+namespace Xamarin.Forms.Xaml.UnitTests
+{
+	public partial class Unreported007 : ContentPage
+	{
+		public Unreported007()
+		{
+			InitializeComponent();
+		}
+		public Unreported007(bool useCompiledXaml)
+		{
+			//this stub will be replaced at compile time
+		}
+
+		[TestFixture]
+		class Tests
+		{
+			[SetUp]
+			public void Setup()
+			{
+				Device.PlatformServices = new MockPlatformServices();
+			}
+
+			[TearDown]
+			public void TearDown()
+			{
+				Device.PlatformServices = null;
+			}
+
+			[TestCase(true), TestCase(false)]
+			public void ConstraintsAreEvaluatedWithOnPlatform(bool useCompiledXaml)
+			{
+				if (useCompiledXaml)
+					MockCompiler.Compile(typeof(Unreported007));
+				Device.OS = TargetPlatform.iOS;
+				var page = new Unreported007(useCompiledXaml);
+				Assert.That(RelativeLayout.GetXConstraint(page.label), Is.TypeOf<Constraint>());
+				Assert.AreEqual(3, RelativeLayout.GetXConstraint(page.label).Compute(null));
+			}
+		}
+	}
+}