Attribute SuggestBucket for serialization #3763

src/Nest/Search/Suggesters/SuggestBucket.cs

@@ -28,15 +28,22 @@ public interface ISuggestBucket
 
 	public class SuggestBucket : ISuggestBucket
 	{
+		[DataMember(Name = "completion")]
 		public ICompletionSuggester Completion { get; set; }
 
+		[DataMember(Name = "phrase")]
 		public IPhraseSuggester Phrase { get; set; }
 
+		[DataMember(Name = "prefix")]
 		public string Prefix { get; set; }
 
+		[DataMember(Name = "regex")]
 		public string Regex { get; set; }
 
+		[DataMember(Name = "term")]
 		public ITermSuggester Term { get; set; }
+
+		[DataMember(Name = "text")]
 		public string Text { get; set; }
 	}
 }

src/Tests/Tests.Reproduce/Discuss179634.cs

@@ -0,0 +1,47 @@
+using System;
+using System.Globalization;
+using System.Text;
+using Elastic.Xunit.XunitPlumbing;
+using Elasticsearch.Net;
+using FluentAssertions;
+using FluentAssertions.Common;
+using Nest;
+using Newtonsoft.Json.Linq;
+using Tests.Core.Client;
+using Tests.Core.Extensions;
+using Tests.Core.Serialization;
+using Tests.Domain;
+
+namespace Tests.Reproduce
+{
+	public class Discuss179634
+	{
+		[U]
+		public void SerializeCompletionSuggesterFieldsCorrectlyWhenDefaultFieldNameInferrerUsed()
+		{
+			var connectionPool = new SingleNodeConnectionPool(new Uri("http://localhost:9200"));
+			var settings = new ConnectionSettings(connectionPool, new InMemoryConnection())
+				.DefaultFieldNameInferrer(p => p.ToUpper(CultureInfo.CurrentCulture))
+				.DisableDirectStreaming();
+
+			var tester = new SerializationTester(new ElasticClient(settings));
+
+			var suggest = new SearchDescriptor<Project>()
+				.Suggest(ss => ss
+					.Completion("title", cs => cs
+						.Field(f => f.Suggest)
+						.Prefix("keyword")
+						.Fuzzy(f => f
+							.Fuzziness(Fuzziness.Auto)
+						)
+						.Size(5)
+					)
+				);
+
+			var expected = @"{""suggest"":{""title"":{""completion"":{""fuzzy"":{""fuzziness"":""AUTO""},""field"":""SUGGEST"",""size"":5},""prefix"":""keyword""}}}";
+
+			var result = tester.Serializes(suggest, expected);
+			result.Success.Should().Be(true, result.DiffFromExpected);
+		}
+	}
+}