#fix 1427 register percolator did not handle raw queries well

Author: Mpdreamz

src/Nest/DSL/RegisterPercolatorDescriptor.cs

@@ -44,7 +44,7 @@ protected override void UpdatePathInfo(IConnectionSettingsValues settings, Elast
 		public object GetCustomJson()
 		{
 			return new FluentDictionary<string, object>(this.MetaData)
-				.Add("query", this.Query);
+				.Add("query", this.Query == null ? null : this.Query.GetCustomJson());
 		}
 
 	}
@@ -84,7 +84,7 @@ public RegisterPercolatorDescriptor<T> Query(Func<QueryDescriptor<T>, QueryConta
 		public object GetCustomJson()
 		{
 			return new FluentDictionary<string, object>(Self.MetaData)
-				.Add("query", Self.Query);
+				.Add("query", Self.Query != null ? Self.Query.GetCustomJson() : null);
 		}
 
 		protected override void UpdatePathInfo(IConnectionSettingsValues settings, ElasticsearchPathInfo<IndexRequestParameters> pathInfo)

src/Tests/Nest.Tests.Unit/Nest.Tests.Unit.csproj

@@ -429,6 +429,7 @@
     <Compile Include="Reproduce\Reproduce1497Tests.cs" />
     <Compile Include="Reproduce\Reproduce1528Tests.cs" />
     <Compile Include="Reproduce\Reproduce1464Tests.cs" />
+    <Compile Include="Reproduce\Reproduce1427Tests.cs" />
     <Compile Include="Reproduce\Reproduce629Tests.cs" />
     <Compile Include="Reproduce\Reproduce1187Tests.cs" />
     <Compile Include="Reproduce\Reproduce901Tests.cs" />

src/Tests/Nest.Tests.Unit/Reproduce/Reproduce1427Tests.cs

@@ -0,0 +1,30 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Reflection;
+using Elasticsearch.Net;
+using FluentAssertions;
+using Nest.Tests.MockData.Domain;
+using NUnit.Framework;
+
+namespace Nest.Tests.Unit.Reproduce
+{
+	/// <summary>
+	/// tests to reproduce reported errors
+	/// </summary>
+	[TestFixture]
+	public class Reproduce1427Tests : BaseJsonTests
+	{
+		[Test]
+		public void RawSurvives()
+		{
+			var registerPercolator = new RegisterPercolatorDescriptor<ElasticsearchProject>()
+				.Name("name")
+				.Index("index")
+				.Query(q => q.Raw(@"{ ""term"" : ""value"" }"));
+			var serialized = _client.Serializer.Serialize(registerPercolator).Utf8String();
+			serialized.Should().Contain("term");
+
+		}
+	}
+}