Add support for EnumMember in JSV/CSV

Author: mythz

src/ServiceStack.Text/Jsv/JsvTypeSerializer.cs

@@ -260,7 +260,7 @@ public void WriteEnumMember(TextWriter writer, object enumValue)
             var mi = enumType.GetMember(enumValue.ToString());
             var enumMemberAttr = mi[0].FirstAttribute<EnumMemberAttribute>();
             var useValue = enumMemberAttr?.Value ?? enumValue;
-            writer.Write(enumValue.ToString());
+            writer.Write(useValue.ToString());
         }
 
         public object EncodeMapKey(object value)

tests/ServiceStack.Text.Tests/EnumTests.cs

@@ -234,13 +234,28 @@ class EnumMemberDto
         [Test]
         public void Does_serialize_EnumMember_Value()
         {
-            var dto = new EnumMemberDto {Day = Day.Sunday};
+            var dto = new EnumMemberDto { Day = Day.Sunday };
+
             var json = dto.ToJson();
-            
             Assert.That(json, Is.EqualTo("{\"Day\":\"SUN\"}"));
-
             var fromDto = json.FromJson<EnumMemberDto>();
             Assert.That(fromDto.Day, Is.EqualTo(Day.Sunday));
+
+            var jsv = dto.ToJsv();
+            Assert.That(jsv, Is.EqualTo("{Day:SUN}"));
+            fromDto = jsv.FromJsv<EnumMemberDto>();
+            Assert.That(fromDto.Day, Is.EqualTo(Day.Sunday));
+
+            var csv = dto.ToCsv();
+            Assert.That(csv.NormalizeNewLines(), Is.EqualTo("Day\nSUN\n".NormalizeNewLines()));
+        }
+
+        [Test]
+        public void Does_serialize_EnumMember_enum()
+        {
+            Assert.That(Day.Sunday.ToJson(), Is.EqualTo("\"SUN\""));
+            Assert.That(Day.Sunday.ToJsv(), Is.EqualTo("SUN"));
+            Assert.That(Day.Sunday.ToCsv(), Is.EqualTo("SUN"));
         }
 
     }