Initial import

1 files changed, 135 insertions, 0 deletions

diff --git a/Xamarin.Forms.Core.UnitTests/BindablePropertyUnitTests.cs b/Xamarin.Forms.Core.UnitTests/BindablePropertyUnitTests.cs
new file mode 100644
index 00000000..1d006a6d
--- /dev/null
+++ b/Xamarin.Forms.Core.UnitTests/BindablePropertyUnitTests.cs
@@ -0,0 +1,135 @@
+using System;
+using System.Linq;
+using NUnit.Framework;
+
+namespace Xamarin.Forms.Core.UnitTests
+{
+	[TestFixture]
+	public class BindablePropertyUnitTests : BaseTestFixture
+	{
+		[Test]
+		public void Create()
+		{
+			const BindingMode mode = BindingMode.OneWayToSource;
+			const string dvalue = "default";
+			BindableProperty.CoerceValueDelegate<string> coerce = (bindable, value) => value;
+			BindableProperty.ValidateValueDelegate<string> validate = (b, v) => true;
+			BindableProperty.BindingPropertyChangedDelegate<string> changed = (b, ov, nv) => { };
+			BindableProperty.BindingPropertyChangingDelegate<string> changing = (b, ov, nv) => { };
+
+			var prop = BindableProperty.Create<Button, string> (b => b.Text, dvalue, mode, validate, changed, changing, coerce);
+			Assert.AreEqual ("Text", prop.PropertyName);
+			Assert.AreEqual (typeof (Button), prop.DeclaringType);
+			Assert.AreEqual (typeof (string), prop.ReturnType);
+			Assert.AreEqual (dvalue, prop.DefaultValue);
+			Assert.AreEqual (mode, prop.DefaultBindingMode);
+		}
+
+		[Test]
+		public void CreateWithDefaultMode ()
+		{
+			const BindingMode mode = BindingMode.Default;
+			var prop = BindableProperty.Create<Button, string> (b => b.Text, null, defaultBindingMode: mode);
+			Assert.AreEqual (BindingMode.OneWay, prop.DefaultBindingMode);
+		}
+
+		[Test]
+		public void CreateCasted()
+		{
+			var prop = BindableProperty.Create<Cell, bool> (c => c.IsEnabled, true);
+
+			Assert.AreEqual ("IsEnabled", prop.PropertyName);
+			Assert.AreEqual (typeof (Cell), prop.DeclaringType);
+			Assert.AreEqual (typeof (bool), prop.ReturnType);
+		}
+
+		[Test]
+		public void CreateNonGeneric()
+		{
+			const BindingMode mode = BindingMode.OneWayToSource;
+			const string dvalue = "default";
+			BindableProperty.CoerceValueDelegate coerce = (bindable, value) => value;
+			BindableProperty.ValidateValueDelegate validate = (b, v) => true;
+			BindableProperty.BindingPropertyChangedDelegate changed = (b, ov, nv) => { };
+			BindableProperty.BindingPropertyChangingDelegate changing = (b, ov, nv) => { };
+
+			var prop = BindableProperty.Create ("Text", typeof(string), typeof(Button), dvalue, mode, validate, changed, changing, coerce);
+			Assert.AreEqual ("Text", prop.PropertyName);
+			Assert.AreEqual (typeof (Button), prop.DeclaringType);
+			Assert.AreEqual (typeof (string), prop.ReturnType);
+			Assert.AreEqual (dvalue, prop.DefaultValue);
+			Assert.AreEqual (mode, prop.DefaultBindingMode);
+		}
+
+		class GenericView<T> : View
+		{
+			public string Text
+			{
+				get;
+				set;
+			}
+		}
+
+		[Test]
+		public void CreateForGeneric()
+		{
+			const BindingMode mode = BindingMode.OneWayToSource;
+			const string dvalue = "default";
+			BindableProperty.CoerceValueDelegate coerce = (bindable, value) => value;
+			BindableProperty.ValidateValueDelegate validate = (b, v) => true;
+			BindableProperty.BindingPropertyChangedDelegate changed = (b, ov, nv) => { };
+			BindableProperty.BindingPropertyChangingDelegate changing = (b, ov, nv) => { };
+
+			var prop = BindableProperty.Create ("Text", typeof(string), typeof(GenericView<>), dvalue, mode, validate, changed, changing, coerce);
+			Assert.AreEqual ("Text", prop.PropertyName);
+			Assert.AreEqual (typeof (GenericView<>), prop.DeclaringType);
+			Assert.AreEqual (typeof (string), prop.ReturnType);
+			Assert.AreEqual (dvalue, prop.DefaultValue);
+			Assert.AreEqual (mode, prop.DefaultBindingMode);
+		}
+
+		[Test]
+		public void ChangingBeforeChanged ()
+		{
+			bool changingfired = false;
+			bool changedfired = false;
+			BindableProperty.BindingPropertyChangedDelegate<string> changed = (b, ov, nv) => { 
+				Assert.True (changingfired);
+				changedfired = true;
+			};
+			BindableProperty.BindingPropertyChangingDelegate<string> changing = (b, ov, nv) => { 
+				Assert.False (changedfired);
+				changingfired  = true;
+			};
+
+			var prop = BindableProperty.Create<Button, string> (b => b.Text, "Foo", 
+				propertyChanging: changing, 
+				propertyChanged: changed);
+
+			Assert.False (changingfired);
+			Assert.False (changedfired);
+
+			(new View ()).SetValue (prop, "Bar");
+
+			Assert.True (changingfired);
+			Assert.True (changedfired);
+		}
+
+		[Test]
+		public void NullableProperty ()
+		{
+			var prop = BindableProperty.Create ("foo", typeof(DateTime?), typeof(MockBindable), null);
+			Assert.AreEqual (typeof(DateTime?), prop.ReturnType);
+
+			var bindable = new MockBindable ();
+			Assert.AreEqual (null, bindable.GetValue (prop));
+
+			var now = DateTime.Now;
+			bindable.SetValue (prop, now);
+			Assert.AreEqual (now, bindable.GetValue (prop));
+
+			bindable.SetValue (prop, null);
+			Assert.AreEqual (null, bindable.GetValue (prop));
+		}
+	}
+}
\ No newline at end of file