[XamlC] TypedBindings, some tests, a compiler, ... (#489)

1 files changed, 130 insertions, 0 deletions

diff --git a/Xamarin.Forms.Xaml.UnitTests/BindingsCompiler.xaml.cs b/Xamarin.Forms.Xaml.UnitTests/BindingsCompiler.xaml.cs
new file mode 100644
index 00000000..843fe1c2
--- /dev/null
+++ b/Xamarin.Forms.Xaml.UnitTests/BindingsCompiler.xaml.cs
@@ -0,0 +1,130 @@
+using System;
+using System.Collections.Generic;
+
+using Xamarin.Forms;
+using NUnit.Framework;
+using System.ComponentModel;
+using System.Runtime.CompilerServices;
+using System.Diagnostics;
+using Xamarin.Forms.Core.UnitTests;
+
+namespace Xamarin.Forms.Xaml.UnitTests
+{
+	public partial class BindingsCompiler : ContentPage
+	{
+		public BindingsCompiler()
+		{
+			InitializeComponent();
+		}
+
+		public BindingsCompiler(bool useCompiledXaml)
+		{
+			//this stub will be replaced at compile time
+		}
+
+		[TestFixture]
+		public class Tests
+		{
+			[SetUp]
+			public void Setup()
+			{
+				Device.PlatformServices = new MockPlatformServices();
+			}
+
+			[TearDown]
+			public void TearDown()
+			{
+				Device.PlatformServices = null;
+			}
+
+			[TestCase(false)]
+			[TestCase(true)]
+			public void Test(bool useCompiledXaml)
+			{
+				var vm = new MockViewModel {
+					Text = "Text0",
+					Model = new MockViewModel {
+						Text = "Text1"
+					},
+				};
+				vm.Model [3] = "TextIndex";
+
+				var layout = new BindingsCompiler(useCompiledXaml);
+				layout.BindingContext = vm;
+				//testing paths
+				Assert.AreEqual("Text0", layout.label0.Text);
+				Assert.AreEqual("Text0", layout.label1.Text);
+				Assert.AreEqual("Text1", layout.label2.Text);
+				Assert.AreEqual("TextIndex", layout.label3.Text);
+
+				//testing selfPath
+				layout.label4.BindingContext = "Self";
+				Assert.AreEqual("Self", layout.label4.Text);
+
+				//testing INPC
+				vm.Text = "Text2";
+				Assert.AreEqual("Text2", layout.label0.Text);
+
+				//testing 2way
+				Assert.AreEqual("Text2", layout.entry0.Text);
+				((IElementController)layout.entry0).SetValueFromRenderer(Entry.TextProperty, "Text3");
+				Assert.AreEqual("Text3", layout.entry0.Text);
+
+				//testing invalid bindingcontext type
+				layout.BindingContext = new object();
+				Assert.AreEqual(null, layout.label0.Text);
+			}
+		}
+	}
+
+	class MockViewModel : INotifyPropertyChanged
+	{
+		public event PropertyChangedEventHandler PropertyChanged;
+
+		public MockViewModel(string text = null)
+		{
+			_text = text;
+		}
+
+		string _text;
+		public string Text {
+			get { return _text; }
+			set {
+				if (_text == value)
+					return;
+
+				_text = value;
+				OnPropertyChanged();
+			}
+		}
+
+		MockViewModel _model;
+		public MockViewModel Model {
+			get { return _model; }
+			set {
+				if (_model == value)
+					return;
+				_model = value;
+				OnPropertyChanged();
+			}
+		}
+
+		string [] values = new string [5];
+		[IndexerName("Indexer")]
+		public string this [int v] {
+			get { return values [v]; }
+			set {
+				if (values [v] == value)
+					return;
+
+				values [v] = value;
+				OnPropertyChanged("Indexer[" + v + "]");
+			}
+		}
+
+		protected void OnPropertyChanged([CallerMemberName] string propertyName = null)
+		{
+			PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(propertyName));
+		}
+	}
+}
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