Add unit test for generic type mapping

Author: gmarz

src/Tests/Nest.Tests.Unit/Core/Map/GenericTypes/GenericTypeMapping.json

@@ -0,0 +1,23 @@
+{
+	"generictypes": {
+		"properties": {
+			"listField": {
+				"type": "string"
+			},
+			"tupleField": {
+				"type": "object",
+				"properties": {
+					"item1": {
+						"type": "string"
+					},
+					"item2": {
+						"type": "integer"
+					}
+				}
+			},
+			"nullableField": {
+				"type": "integer"
+			}
+		}
+	}
+}

src/Tests/Nest.Tests.Unit/Core/Map/GenericTypes/GenericTypeMappingTests.cs

@@ -0,0 +1,29 @@
+using NUnit.Framework;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Reflection;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Nest.Tests.Unit.Core.Map.GenericTypes
+{
+	[TestFixture]
+	public class GenericTypeMappingTests : BaseJsonTests
+	{
+		public class GenericTypes
+		{
+			public IEnumerable<string> ListField { get; set; }
+			public Tuple<string, int> TupleField { get; set; }
+			public Nullable<int> NullableField { get; set; }
+		}
+
+		[Test]
+		public void GenericTypeMapping()
+		{
+			var result = this._client.Map<GenericTypes>(m => m.MapFromAttributes());
+			this.JsonEquals(result.ConnectionStatus.Request, MethodInfo.GetCurrentMethod());
+		}
+	}
+
+}