Fix value variable leaking from BindingContext

source/Handlebars.Test/IssueTests.cs

@@ -0,0 +1,21 @@
+using Xunit;
+
+namespace HandlebarsDotNet.Test
+{
+    public class IssueTests
+    {
+        // Issue https://github.com/zjklee/Handlebars.CSharp/issues/7
+        [Fact]
+        public void ValueVariableShouldNotBeAccessibleFromContext()
+        {
+            var handlebars = Handlebars.Create();
+            var render = handlebars.Compile("{{value}}");
+            var output = render(new
+            {
+                anotherValue = "Test"
+            });
+
+            Assert.Equal("", output);
+        }
+    }
+}

source/Handlebars/ObjectDescriptors/ContextObjectDescriptor.cs

@@ -7,7 +7,7 @@ namespace HandlebarsDotNet.ObjectDescriptors
     internal class ContextObjectDescriptor : IObjectDescriptorProvider
     {
         private static readonly Type BindingContextType = typeof(BindingContext);
-        private static readonly string[] Properties = { "root", "parent", "value" };
+        private static readonly string[] Properties = { "root", "parent" };
 
         private static readonly ObjectDescriptor Descriptor = new ObjectDescriptor(BindingContextType)
         {

source/Handlebars/ValueProviders/BindingContextValueProvider.cs

@@ -26,10 +26,6 @@ public bool TryGetValue(ref ChainSegment segment, out object value)
                     value = _context.ParentContext;
                     return true;
 
-                case "value":
-                    value = _context.Value;
-                    return true;
-
                 default:
                     return TryGetContextVariable(_context.Value, ref segment, out value);
             }