[Core/Win] CreateVariant

2 files changed, 119 insertions, 0 deletions

diff --git a/Xamarin.PropertyEditing.Tests/CreateVariantViewModelTests.cs b/Xamarin.PropertyEditing.Tests/CreateVariantViewModelTests.cs
new file mode 100644
index 0000000..1775a12
--- /dev/null
+++ b/Xamarin.PropertyEditing.Tests/CreateVariantViewModelTests.cs
@@ -0,0 +1,118 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using Moq;
+using NUnit.Framework;
+using Xamarin.PropertyEditing.ViewModels;
+
+namespace Xamarin.PropertyEditing.Tests
+{
+	[TestFixture]
+	class CreateVariantViewModelTests
+	{
+		[Test]
+		public void AnySelectedByDefault ()
+		{
+			var property = GetTestProperty (out PropertyVariation[] variations);
+			var vm = new VariationViewModel ("Width", new[] { variations[0], variations[1] });
+			Assert.That (vm.SelectedVariation, Is.Not.Null);
+			Assert.That (vm.IsAnySelected, Is.True);
+		}
+
+		[Test]
+		public void IsAnySelectedUpdates ()
+		{
+			var property = GetTestProperty (out PropertyVariation[] variations);
+			var vm = new VariationViewModel ("Width", new[] { variations[0], variations[1] });
+			Assume.That (vm.SelectedVariation, Is.Not.Null);
+			Assume.That (vm.IsAnySelected, Is.True);
+
+			bool changed = false;
+			vm.PropertyChanged += (sender, args) => {
+				if (args.PropertyName == nameof (VariationViewModel.IsAnySelected))
+					changed = true;
+			};
+
+			vm.SelectedVariation = variations[0];
+			Assert.That (vm.IsAnySelected, Is.False, "IsAnySelected did not switch to false");
+			Assert.That (changed, Is.True, "PropertyChanged did not fire for IsAnySelected");
+
+			changed = false;
+			vm.SelectedVariation = vm.Variations[0];
+			Assert.That (vm.IsAnySelected, Is.True, "IsAnySelected did not switch to back to true");
+			Assert.That (changed, Is.True, "PropertyChanged did not fire for IsAnySelected");
+		}
+
+		[Test]
+		public void VariantCategories ()
+		{
+			var property = GetTestProperty (out PropertyVariation[] variations);
+			var categories = variations.Select (v => v.Category).Distinct ().ToArray();
+			var vm = new CreateVariantViewModel (property.Object);
+			Assert.That (vm.VariationCategories.Count, Is.EqualTo (categories.Length));
+			CollectionAssert.AreEqual (vm.VariationCategories.Select (v => v.Name), categories);
+		}
+
+		[Test]
+		public void WhenAllAnyCommandDisabledEnabled ()
+		{
+			var property = GetTestProperty (out PropertyVariation[] variations);
+			var vm = new CreateVariantViewModel (property.Object);
+			Assume.That (vm.VariationCategories.All (vvm => vvm.IsAnySelected), Is.True);
+			Assert.That (vm.CreateVariantCommand.CanExecute (null), Is.False);
+
+			bool changed = false;
+			vm.CreateVariantCommand.CanExecuteChanged += (sender, args) => changed = true;
+
+			vm.VariationCategories[0].SelectedVariation = vm.VariationCategories[0].Variations[1];
+			Assert.That (changed, Is.True, "CanExecuteChanged did not fire");
+			Assert.That (vm.CreateVariantCommand.CanExecute (null), Is.True);
+		}
+
+		[Test]
+		public void CreateVariant ()
+		{
+			var property = GetTestProperty (out PropertyVariation[] variations);
+			var vm = new CreateVariantViewModel (property.Object);
+			Assume.That (vm.Variant, Is.Null);
+
+			bool changed = false;
+			vm.PropertyChanged += (sender, args) => {
+				if (args.PropertyName == nameof (CreateVariantViewModel.Variant))
+					changed = true;
+			};
+
+			vm.VariationCategories[0].SelectedVariation = vm.VariationCategories[0].Variations[1];
+			vm.VariationCategories[1].SelectedVariation = vm.VariationCategories[1].Variations[2];
+			vm.CreateVariantCommand.Execute (null);
+
+			Assert.That (changed, Is.True, "Variant did not fire PropertyChanged");
+			Assert.That (vm.Variant, Is.Not.Null);
+			Assert.That (vm.Variant.Count, Is.EqualTo (2));
+			Assert.That (vm.Variant, Contains.Item (vm.VariationCategories[0].Variations[1]));
+			Assert.That (vm.Variant, Contains.Item (vm.VariationCategories[1].Variations[2]));
+		}
+
+		private Mock<IPropertyInfo> GetTestProperty (out PropertyVariation[] variations)
+		{
+			variations = new[] {
+				new PropertyVariation ("Width", "Compact"),
+				new PropertyVariation ("Width", "Regular"),
+				new PropertyVariation ("Gamut", "P3"),
+				new PropertyVariation ("Gamut", "sRGB"),
+				new PropertyVariation ("Other", "Other"),
+			};
+
+			var property = new Mock<IPropertyInfo> ();
+			property.SetupGet (p => p.Name).Returns ("Variant");
+			property.SetupGet (p => p.Type).Returns (typeof (string));
+			property.SetupGet (p => p.RealType).Returns (typeof (string).ToTypeInfo ());
+			property.SetupGet (p => p.CanWrite).Returns (true);
+			property.SetupGet (p => p.ValueSources).Returns (ValueSources.Default | ValueSources.Local);
+			property.SetupGet (p => p.Variations).Returns (variations);
+			return property;
+		}
+	}
+}
\ No newline at end of file
diff --git a/Xamarin.PropertyEditing.Tests/Xamarin.PropertyEditing.Tests.csproj b/Xamarin.PropertyEditing.Tests/Xamarin.PropertyEditing.Tests.csproj
index 1e0355f..61d14ad 100644
--- a/Xamarin.PropertyEditing.Tests/Xamarin.PropertyEditing.Tests.csproj
+++ b/Xamarin.PropertyEditing.Tests/Xamarin.PropertyEditing.Tests.csproj
@@ -66,6 +66,7 @@
     <Compile Include="CollectionPropertyViewModelTests.cs" />
     <Compile Include="CreateBindingViewModelTests.cs" />
     <Compile Include="CreateResourceViewModelTests.cs" />
+    <Compile Include="CreateVariantViewModelTests.cs" />
     <Compile Include="MaterialDesignColorViewModelTests.cs" />
     <Compile Include="CombinablePredefinedViewModelTests.cs" />
     <Compile Include="MockBindingEditor.cs" />