Basic test demonstrating serializer.

test/ExtendedXmlSerializer.Tests.ReportedIssues/Issue440Tests.cs

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+using ExtendedXmlSerializer.Configuration;
+using ExtendedXmlSerializer.ContentModel;
+using ExtendedXmlSerializer.ContentModel.Format;
+using ExtendedXmlSerializer.Tests.ReportedIssues.Support;
+using FluentAssertions;
+using System;
+using Xunit;
+
+namespace ExtendedXmlSerializer.Tests.ReportedIssues
+{
+	public sealed class Issue440Tests
+	{
+		[Fact]
+		public void Verify()
+		{
+			var container = new ConfigurationContainer().Type<IInterface>()
+			                                            .Register()
+			                                            .Serializer()
+			                                            .Using(Serializer.Default)
+			                                            .Create()
+			                                            .ForTesting();
+			var instance = new Container {Interface = new Implementation()};
+			container.Cycle(instance)
+			         .Interface.Should()
+			         .BeOfType<Implementation>()
+			         .And.Subject.To<Implementation>()
+			         .Created.Should()
+			         .BeTrue();
+		}
+
+		sealed class Container
+		{
+			public IInterface Interface { get; set; }
+		}
+
+		sealed class Serializer : ISerializer<IInterface>
+		{
+			public static Serializer Default { get; } = new Serializer();
+
+			Serializer() {}
+
+			public IInterface Get(IFormatReader parameter)
+			{
+				var name   = parameter.Content();
+				var type   = Type.GetType(name) ?? throw new InvalidOperationException($"Could not parse '{name}'");
+				var result = (Implementation)Activator.CreateInstance(type);
+				result.Created = true;
+				return result;
+			}
+
+			public void Write(IFormatWriter writer, IInterface instance)
+			{
+				writer.Content(instance.GetType().AssemblyQualifiedName);
+			}
+		}
+
+		public interface IInterface {}
+
+		public sealed class Implementation : IInterface
+		{
+			public bool Created { get; set; }
+		}
+	}
+}