1 files changed, 72 insertions, 0 deletions
diff --git a/Xamarin.Forms.Core.UnitTests/AnimatableKeyTests.cs b/Xamarin.Forms.Core.UnitTests/AnimatableKeyTests.cs
new file mode 100644
index 00000000..385ab1fc
--- /dev/null
+++ b/Xamarin.Forms.Core.UnitTests/AnimatableKeyTests.cs
@@ -0,0 +1,72 @@
+using System;
+using System.Collections.Generic;
+using NUnit.Framework;
+
+namespace Xamarin.Forms.Core.UnitTests
+{
+	[TestFixture]
+	public class AnimatableKeyTests
+	{
+		class FakeAnimatable : IAnimatable
+		{
+			public void BatchBegin ()
+			{
+				
+			}
+
+			public void BatchCommit ()
+			{
+				
+			}
+		}
+
+		[Test]
+		public void KeysWithDifferentHandlesAreNotEqual ()
+		{
+			var animatable = new FakeAnimatable();
+
+			var key1 = new AnimatableKey(animatable, "handle1");
+			var key2 = new AnimatableKey(animatable, "handle2");
+
+			Assert.AreNotEqual (key1, key2);
+		}
+
+		[Test]
+		public void KeysWithDifferentAnimatablesAreNotEqual ()
+		{
+			var animatable1 = new FakeAnimatable();
+			var animatable2 = new FakeAnimatable();
+
+			var key1 = new AnimatableKey(animatable1, "handle");
+			var key2 = new AnimatableKey(animatable2, "handle");
+
+			Assert.AreNotEqual (key1, key2);
+		}
+
+		[Test]
+		public void KeysWithSameAnimatableAndHandleAreEqual ()
+		{
+			var animatable = new FakeAnimatable();
+
+			var key1 = new AnimatableKey(animatable, "handle");
+			var key2 = new AnimatableKey(animatable, "handle");
+
+			Assert.AreEqual (key1, key2);
+		}
+
+		[Test]
+		public void ThrowsWhenKeysWithSameAnimatableAdded ()
+		{
+			var animatable = new FakeAnimatable();
+
+			var key1 = new AnimatableKey(animatable, "handle");
+			var key2 = new AnimatableKey(animatable, "handle");
+
+			var dict = new Dictionary<AnimatableKey, object> { { key1, new object () } };
+
+			Assert.Throws<ArgumentException> (() => {
+				dict.Add (key2, new object ());
+			});
+		}
+	}
+}
+\ No newline at end of file