squash a bunch of commits

Tests/UnitTests/ServiceModels/ServiceModelsShouldSerialize.cs

@@ -0,0 +1,25 @@
+using Newtonsoft.Json;
+using Shogi.Contracts.Api;
+using Shogi.Contracts.Types;
+using System;
+
+namespace UnitTests.ServiceModels;
+
+public class ServiceModelsShouldSerialize
+{
+	[Fact]
+	public void ServiceModelsSerializeAndDeserialize()
+	{
+		using var scope = new AssertionScope();
+		AssertTypeDeserializes(new CreateGuestTokenResponse("MyId", "MyDisplayName", Guid.NewGuid()));
+		AssertTypeDeserializes(new SessionMetadata { Name = "MyName", PlayerCount = 5 });
+	}
+
+	private static void AssertTypeDeserializes<T>(T t) where T : class
+	{
+		var serialized = JsonConvert.SerializeObject(t);
+		var deserialized = JsonConvert.DeserializeObject<T>(serialized);
+
+		deserialized.Should().BeEquivalentTo(t);
+	}
+}