Add test in attempt to reproduce #1176

Author: gmarz

Diff for: src/Tests/Nest.Tests.Integration/Nest.Tests.Integration.csproj

@@ -184,6 +184,7 @@
     <Compile Include="Mapping\GetMultipleMappingTests.cs" />
     <Compile Include="Reproduce\Reproduce1079Tests.cs" />
     <Compile Include="Reproduce\Reproduce1169Tests.cs" />
+    <Compile Include="Reproduce\Reproduce1176Tests.cs" />
     <Compile Include="Reproduce\Reproduce769Tests.cs" />
     <Compile Include="Reproduce\Reproduce945Tests.cs" />
     <Compile Include="Reproduce\Reproduce953Tests.cs" />

Diff for: src/Tests/Nest.Tests.Integration/Reproduce/Reproduce1176Tests.cs

@@ -0,0 +1,41 @@
+using Elasticsearch.Net.ConnectionPool;
+using Elasticsearch.Net.Exceptions;
+using FluentAssertions;
+using NUnit.Framework;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Nest.Tests.Integration.Reproduce
+{
+	public class Reproduce1176Tests
+	{
+		[Test]
+		public void MaxRetryExceptionInnerExceptionIsNull()
+		{
+			var nodes = new Uri[]
+			{
+				new Uri("http://localhost:9300"),
+				new Uri("http://localhost:9400"),
+				new Uri("http://localhost:9500")
+			};
+			var connectionPool = new StaticConnectionPool(nodes);
+			var settings = new ConnectionSettings(connectionPool);
+			var client = new ElasticClient(settings);
+
+			var maxRetryException = Assert.Throws<MaxRetryException>(() => client.GetIndex(g => g.Index("foo")));
+			maxRetryException.InnerException.Should().NotBeNull();
+
+			var aggregateException = maxRetryException.InnerException as AggregateException;
+			aggregateException.Should().NotBeNull();
+			aggregateException.InnerExceptions.Count.Should().Be(3);
+
+			foreach(var innerException in aggregateException.InnerExceptions)
+			{
+				(innerException is PingException).Should().BeTrue();
+			}
+		}
+	}
+}