[Core] Add ValueConverter

3 files changed, 90 insertions, 1 deletions

diff --git a/Xamarin.PropertyEditing.Tests/AddValueConverterViewModelTests.cs b/Xamarin.PropertyEditing.Tests/AddValueConverterViewModelTests.cs
new file mode 100644
index 0000000..61be5c5
--- /dev/null
+++ b/Xamarin.PropertyEditing.Tests/AddValueConverterViewModelTests.cs
@@ -0,0 +1,83 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading;
+using System.Threading.Tasks;
+using Moq;
+using NUnit.Framework;
+using NUnit.Framework.Internal;
+using Xamarin.PropertyEditing.ViewModels;
+
+namespace Xamarin.PropertyEditing.Tests
+{
+	[TestFixture]
+	public class AddValueConverterViewModelTests
+	{
+		[SetUp]
+		public void Setup ()
+		{
+			this.syncContext = new AsyncSynchronizationContext ();
+			SynchronizationContext.SetSynchronizationContext (this.syncContext);
+		}
+
+		[TearDown]
+		public void TearDown ()
+		{
+			this.syncContext.WaitForPendingOperationsToComplete ();
+			SynchronizationContext.SetSynchronizationContext (null);
+		}
+
+		[Test]
+		public void ConverterNameSuggestedWithProvider ()
+		{
+			object target = new object();
+
+			var editorProvider = new Mock<IEditorProvider> ();
+
+			var type = new TypeInfo (new AssemblyInfo ("Assembly", false), "Namespace", "Name");
+
+			const string suggested = "SuggestedName";
+
+			var resourcesProvider = new Mock<IResourceProvider> ();
+			resourcesProvider.Setup (rp => rp.SuggestResourceNameAsync (It.IsAny<IReadOnlyCollection<object>> (), type))
+				.ReturnsAsync (suggested);
+
+			var types = new AssignableTypesResult (new [] { type });
+			var vm = new AddValueConverterViewModel (
+				new TargetPlatform (editorProvider.Object, resourcesProvider.Object), target,
+				new AsyncValue<IReadOnlyDictionary<IAssemblyInfo, ILookup<string, ITypeInfo>>> (
+					Task.FromResult (types.GetTypeTree ())));
+
+			Assume.That (vm.ConverterName, Is.Null);
+
+			vm.SelectedType = type;
+
+			Assert.That (vm.ConverterName, Is.EqualTo (suggested));
+		}
+
+		[Test]
+		public void ConverterNameSuggestedWithoutProvider ()
+		{
+			object target = new object ();
+
+			var editorProvider = new Mock<IEditorProvider> ();
+
+			var type = new TypeInfo (new AssemblyInfo ("Assembly", false), "Namespace", "Name");
+
+			var types = new AssignableTypesResult (new[] { type });
+			var vm = new AddValueConverterViewModel (
+				new TargetPlatform (editorProvider.Object), target,
+				new AsyncValue<IReadOnlyDictionary<IAssemblyInfo, ILookup<string, ITypeInfo>>> (
+					Task.FromResult (types.GetTypeTree ())));
+
+			Assume.That (vm.ConverterName, Is.Null);
+
+			vm.SelectedType = type;
+
+			Assert.That (vm.ConverterName, Is.EqualTo (type.Name));
+		}
+
+		private AsyncSynchronizationContext syncContext;
+	}
+}
diff --git a/Xamarin.PropertyEditing.Tests/MockControls/MockResourceProvider.cs b/Xamarin.PropertyEditing.Tests/MockControls/MockResourceProvider.cs
index 60e0532..cadded8 100644
--- a/Xamarin.PropertyEditing.Tests/MockControls/MockResourceProvider.cs
+++ b/Xamarin.PropertyEditing.Tests/MockControls/MockResourceProvider.cs
@@ -59,10 +59,15 @@ namespace Xamarin.PropertyEditing.Tests
 
 		public Task<string> SuggestResourceNameAsync (IReadOnlyCollection<object> targets, IPropertyInfo property)
 		{
+			return SuggestResourceNameAsync (targets, property.RealType);
+		}
+
+		public Task<string> SuggestResourceNameAsync (IReadOnlyCollection<object> targets, ITypeInfo resourceType)
+		{
 			int i = 1;
 			string key;
 			do {
-				key = property.Type.Name + i++;
+				key = resourceType.Name + i++;
 			} while (this.resources[ApplicationResourcesSource].Any (r => r.Name == key));
 
 			return Task.FromResult (key);
diff --git a/Xamarin.PropertyEditing.Tests/Xamarin.PropertyEditing.Tests.csproj b/Xamarin.PropertyEditing.Tests/Xamarin.PropertyEditing.Tests.csproj
index 10e1eda..ddcdd7d 100644
--- a/Xamarin.PropertyEditing.Tests/Xamarin.PropertyEditing.Tests.csproj
+++ b/Xamarin.PropertyEditing.Tests/Xamarin.PropertyEditing.Tests.csproj
@@ -57,6 +57,7 @@
     <Reference Include="System.Xml" />
   </ItemGroup>
   <ItemGroup>
+    <Compile Include="AddValueConverterViewModelTests.cs" />
     <Compile Include="AsyncSynchronizationContext.cs" />
     <Compile Include="AsyncValueTests.cs" />
     <Compile Include="AsyncWorkQueueTests.cs" />