Added Named Filter unit tests

Author: Mpdreamz

src/Nest.Tests.Integration/Search/NamedFilter/NamedFilterTests.cs

@@ -0,0 +1,32 @@
+using System.Linq;
+using Nest.Tests.MockData;
+using Nest.Tests.MockData.Domain;
+using NUnit.Framework;
+
+namespace Nest.Tests.Integration.Search.NamedFilter
+{
+	[TestFixture]
+	public class NamedFilterTest : IntegrationTests
+	{
+		private string _LookFor = NestTestData.Data.First().Name;
+
+		[Test]
+		public void SimpleNamedFilter()
+		{
+			var queryResults = this._client.Search<ElasticSearchProject>(s=>s
+				.From(0)
+				.Size(10)
+				.Fields(p=>p.Name)
+				.Filter(f => f.Name("myfilter").Terms(p => p.Name.Suffix("sort"), new [] {_LookFor.ToLower() })
+					|| f.Name("myfilter2").Terms(p => p.Name.Suffix("sort"), new [] { "nest" }) 
+				)
+			);
+			Assert.True(queryResults.IsValid);
+			Assert.True(queryResults.Documents.Any());
+			//Assert matched_filters is returned
+			//Possible ES bug
+			//https://github.com/elasticsearch/elasticsearch/issues/3097
+		}
+
+	}
+}