1 files changed, 72 insertions, 0 deletions
diff --git a/Xamarin.Forms.Core.UnitTests/BindableObjectExtensionTests.cs b/Xamarin.Forms.Core.UnitTests/BindableObjectExtensionTests.cs
new file mode 100644
index 00000000..06a24c7f
--- /dev/null
+++ b/Xamarin.Forms.Core.UnitTests/BindableObjectExtensionTests.cs
@@ -0,0 +1,72 @@
+using System;
+using NUnit.Framework;
+
+namespace Xamarin.Forms.Core.UnitTests
+{
+	[TestFixture]
+	public class BindableObjectExtensionTests : BaseTestFixture
+	{
+		[Test]
+		public void SetBindingNull()
+		{
+			Assert.That (() => BindableObjectExtensions.SetBinding (null, MockBindable.TextProperty, "Name"),
+				Throws.InstanceOf<ArgumentNullException>());
+			Assert.That (() => BindableObjectExtensions.SetBinding (new MockBindable(), null, "Name"),
+				Throws.InstanceOf<ArgumentNullException>());
+			Assert.That (() => BindableObjectExtensions.SetBinding (new MockBindable(), MockBindable.TextProperty, null),
+				Throws.InstanceOf<ArgumentNullException>());
+
+			Assert.That (() => BindableObjectExtensions.SetBinding<MockViewModel> (null, MockBindable.TextProperty, vm => vm.Text),
+				Throws.InstanceOf<ArgumentNullException>());
+			Assert.That (() => BindableObjectExtensions.SetBinding<MockViewModel> (new MockBindable(), null, vm => vm.Text),
+				Throws.InstanceOf<ArgumentNullException>());
+			Assert.That (() => BindableObjectExtensions.SetBinding<MockViewModel> (new MockBindable(), MockBindable.TextProperty, null),
+				Throws.InstanceOf<ArgumentNullException>());
+		}
+
+		[Test]
+		public void Issue2643()
+		{
+			Label labelTempoDiStampa = new Label();
+			labelTempoDiStampa.BindingContext = new { Name = "1", Company = "Xamarin" };
+			labelTempoDiStampa.SetBinding (Label.TextProperty, "Name", stringFormat: "Hi: {0}");
+
+			Assert.That (labelTempoDiStampa.Text, Is.EqualTo ("Hi: 1"));
+		}
+
+		class Bz27229ViewModel
+		{
+			public object Member { get; private set; }
+			public Bz27229ViewModel ()
+			{
+				Member = new Generic<Label> (new Label {Text="foo"});
+			}
+		}
+
+		class Generic<TResult>
+		{
+			public Generic (TResult result)
+			{
+				Result = result;
+			}
+
+			public TResult Result { get; set; }
+		}
+
+		[Test]
+		public void Bz27229 ()
+		{
+			var totalCheckTime = new TextCell { Text = "Total Check Time" };
+			totalCheckTime.BindingContext = new Bz27229ViewModel ();
+			totalCheckTime.SetBinding(TextCell.DetailProperty,"Member.Result.Text");
+			Assert.AreEqual ("foo", totalCheckTime.Detail);
+
+			totalCheckTime = new TextCell { Text = "Total Check Time" };
+			totalCheckTime.BindingContext = new Bz27229ViewModel ();
+			totalCheckTime.SetBinding<Bz27229ViewModel>(TextCell.DetailProperty, vm =>
+				((Generic<Label>)vm.Member).Result.Text);
+
+			Assert.AreEqual ("foo", totalCheckTime.Detail);
+		}
+	}
+}