Fix for default index on suggests

src/Nest/DSL/SuggestDescriptor.cs

@@ -143,5 +143,20 @@ protected override void UpdatePathInfo(IConnectionSettingsValues settings, Elast
 			SuggestPathInfo.Update(pathInfo, this);
 		}
 
+		protected override void SetRouteParameters(IConnectionSettingsValues settings, ElasticsearchPathInfo<SuggestRequestParameters> pathInfo)
+		{
+			var inferrer = new ElasticInferrer(settings);
+
+			var index = inferrer.IndexName<T>();
+			pathInfo.Index = index;
+
+			if (Self.Indices.HasAny())
+				pathInfo.Index = inferrer.IndexNames(Self.Indices);
+			else
+				pathInfo.Index = Self.AllIndices.GetValueOrDefault(false) ? null : inferrer.IndexName<T>();
+
+			if (pathInfo.Index.IsNullOrEmpty())
+				pathInfo.Index = "_all";
+		}
 	}
 }

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

@@ -552,9 +552,10 @@
     <Compile Include="Search\Source\SourceTests.cs" />
     <Compile Include="Search\Sorting\FunctionScoreTests.cs" />
     <Compile Include="Search\Sorting\SortTests.cs" />
-    <Compile Include="Search\suggest\CompletionSuggestTests.cs" />
-    <Compile Include="Search\suggest\PhraseSuggestTests.cs" />
-    <Compile Include="Search\suggest\TermSuggestTests.cs" />
+    <Compile Include="Search\Suggest\CompletionSuggestTests.cs" />
+    <Compile Include="Search\Suggest\PhraseSuggestTests.cs" />
+    <Compile Include="Search\Suggest\SuggestUrlTest.cs" />
+    <Compile Include="Search\Suggest\TermSuggestTests.cs" />
     <Compile Include="Settings\UsePrettyResponseTests.cs" />
     <Compile Include="TestElasticClient.cs" />
     <Compile Include="Core\Update\UpdateTests.cs" />

src/Tests/Nest.Tests.Unit/Search/suggest/SuggestUrlTest.cs

@@ -0,0 +1,73 @@
+using System;
+using System.Net;
+using Elasticsearch.Net.Connection;
+using Elasticsearch.Net.ConnectionPool;
+using FluentAssertions;
+using Nest.Tests.MockData.Domain;
+using NUnit.Framework;
+
+namespace Nest.Tests.Unit.Search.Suggest
+{
+	[TestFixture]
+	public class SuggestUrlTest
+	{
+		private void TestUrl(string expected, Func<SuggestDescriptor<ElasticsearchProject>, SuggestDescriptor<ElasticsearchProject>>  descriptor, ConnectionSettings settings = null)
+		{
+			var client = new ElasticClient(settings, new InMemoryConnection());
+			var response = client.Suggest(descriptor);
+			var uri = new Uri(response.ConnectionStatus.RequestUrl);
+			var actual = WebUtility.UrlDecode(uri.AbsolutePath);
+			actual.Should().Be(expected);
+		}
+
+		[Test]
+		public void Suggest_to_all_url_test()
+		{
+			TestUrl(
+				expected: "/_all/_suggest",
+				descriptor: d => d.Term("name", s => s.OnField(f => f.Contributors)).AllIndices()
+			);
+		}
+
+		[Test]
+		public void Suggest_to_specific_index_url_test()
+		{
+			var settings = new ConnectionSettings(new SingleNodeConnectionPool(new Uri("http://esserver.com")));
+
+			settings.MapDefaultTypeIndices(d => d
+				.Add(typeof (ElasticsearchProject), typeof (ElasticsearchProject).Name.ToLower()));
+
+			TestUrl(
+				expected: "/elasticsearchproject/_suggest",
+				descriptor: d => d.Term("name", s => s.OnField(f => f.Contributors)),
+				settings: settings
+			);
+		}
+
+		[Test]
+		public void Suggest_to_specific_index_specified_in_descriptor_url_test()
+		{
+			var settings = new ConnectionSettings(new SingleNodeConnectionPool(new Uri("http://esserver.com")));
+
+			settings.MapDefaultTypeIndices(d => d
+				.Add(typeof (ElasticsearchVersionInfo), "elasticsearchproject"));
+
+			TestUrl(
+				expected: "/elasticsearchproject/_suggest",
+				descriptor: d => d.Term("name", s => s.OnField(f => f.Contributors)).Index<ElasticsearchVersionInfo>(),
+				settings: settings
+			);
+		}
+
+		[Test]
+		public void Suggest_to_specific_index_specified_as_string_in_descriptor_url_test()
+		{
+			var settings = new ConnectionSettings(new SingleNodeConnectionPool(new Uri("http://esserver.com")));
+
+			TestUrl(
+				expected: "/anotherindex/_suggest",
+				descriptor: d => d.Term("name", s => s.OnField(f => f.Contributors)).Index("anotherindex")
+			);
+		}
+	}
+}