Bring tests from fa710e6 (rel/1.0.3) into dev

- relates to #5595 which was a 1.0.x-only problem

test/Microsoft.AspNetCore.Mvc.ViewFeatures.Test/Internal/ExpressionHelperTest.cs

@@ -22,6 +22,9 @@ namespace Microsoft.AspNetCore.Mvc.ViewFeatures.Internal
                 var Model = new TestModel();
                 var key = "TestModel";
                 var myModels = new List<TestModel>();
+                var models = new List<TestModel>();
+                var modelTest = new TestModel();
+                var modelType = typeof(TestModel);
 
                 return new TheoryData<Expression, string>
                 {
@@ -57,6 +60,18 @@ namespace Microsoft.AspNetCore.Mvc.ViewFeatures.Internal
                         (Expression<Func<TestModel, TestModel>>)(m => Model),
                         string.Empty
                     },
+                    {
+                        (Expression<Func<TestModel, int>>)(model => models[0].SelectedCategory.CategoryId),
+                        "models[0].SelectedCategory.CategoryId"
+                    },
+                    {
+                        (Expression<Func<TestModel, string>>)(model => modelTest.Name),
+                        "modelTest.Name"
+                    },
+                    {
+                        (Expression<Func<TestModel, Type>>)(model => modelType),
+                        "modelType"
+                    },
                     {
                         (Expression<Func<IList<TestModel>, Category>>)(model => model[2].SelectedCategory),
                         "[2].SelectedCategory"