Tests: add Test_Serialize_enum - see https://github.com/friflo/Friflo…

….Engine.ECS/issues/35

src/Tests/ECS/Base/Test_ComponentSchema.cs

@@ -48,12 +48,12 @@ public static void Test_ComponentTypes()
         var components  = schema.Components;
         var scripts     = schema.Scripts;
 
-        AreEqual("components: 67  scripts: 10  entity tags: 16", schema.ToString());
-        AreEqual(68,    components.Length);
+        AreEqual("components: 68  scripts: 10  entity tags: 16", schema.ToString());
+        AreEqual(69,    components.Length);
         AreEqual(11,    scripts.Length);
 
-        AreEqual(73,    schema.SchemaTypeByKey.Count);
-        AreEqual(67,    schema.ComponentTypeByType.Count);
+        AreEqual(74,    schema.SchemaTypeByKey.Count);
+        AreEqual(68,    schema.ComponentTypeByType.Count);
         AreEqual(10,    schema.ScriptTypeByType.Count);
 
         IsNull(components[0]);

src/Tests/ECS/Serialize/Test_Serialize_enum.cs

@@ -0,0 +1,56 @@
+using System.Collections.Generic;
+using System.IO;
+using System.Text;
+using Friflo.Engine.ECS;
+using Friflo.Engine.ECS.Serialize;
+using NUnit.Framework;
+using static NUnit.Framework.Assert;
+
+
+// ReSharper disable InconsistentNaming
+namespace Tests.ECS.Serialize {
+
+enum MyEnum { two = 2 }
+
+struct EnumComp : IComponent
+{
+    public MyEnum myEnum;
+}
+
+public static class Test_Serialize_enum
+{
+    // https://github.com/friflo/Friflo.Engine.ECS/issues/35   
+    [Test]
+    public static void Test_Serialize_enum_component()
+    {
+        var store = new EntityStore();
+        Entity entity = store.CreateEntity(1);
+        entity.AddComponent(new EnumComp { myEnum = MyEnum.two });
+
+        var serializer = new EntitySerializer();
+
+        using MemoryStream writeStream = new MemoryStream();
+        var entities = new List<Entity> { entity };
+        serializer.WriteEntities(entities, writeStream);
+
+        writeStream.Position = 0;
+        using StreamReader reader = new(writeStream);
+        string json = reader.ReadToEnd();
+        var expect =
+@"[{
+    ""id"": 1,
+    ""components"": {
+        ""EnumComp"": {""myEnum"":""two""}
+    }
+}]";
+        AreEqual(expect, json);
+
+        var newStore = new EntityStore();
+        var readStream = new MemoryStream(Encoding.UTF8.GetBytes(json));
+        serializer.ReadIntoStore(newStore, readStream);
+        var newEntity = newStore.GetEntityById(1);
+        AreEqual(MyEnum.two, newEntity.GetComponent<EnumComp>().myEnum);
+    }
+}
+
+}