Merge pull request #25 from aksio-insurtech:fix/stuff

Adding custom exception

Source/TypeSerializer.cs

@@ -19,16 +19,16 @@ public override Type Deserialize(BsonDeserializationContext context, BsonDeseria
         switch (bsonType)
         {
             case BsonType.String:
-                return Type.GetType(context.Reader.ReadString()) ?? throw new InvalidOperationException("Could not deserialize type.");
-
-            default:
-                throw new NotSupportedException($"Cannot deserialize a {bsonType} to a {nameof(Type)}.");
+                var type = context.Reader.ReadString();
+                return Type.GetType(type) ?? throw new UnknownType(type);
         }
+
+        throw new UnknownType(bsonType.ToString());
     }
 
     /// <inheritdoc/>
     public override void Serialize(BsonSerializationContext context, BsonSerializationArgs args, Type value)
     {
         context.Writer.WriteString(value.GetTypeString());
     }
-}
+}

Source/UnknownType.cs

@@ -0,0 +1,18 @@
+// Copyright (c) Aksio Insurtech. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+namespace Aksio.MongoDB;
+
+/// <summary>
+/// Exception that gets thrown when an unknown type is encountered.
+/// </summary>
+public class UnknownType : Exception
+{
+    /// <summary>
+    /// Initializes a new instance of the <see cref="UnknownType"/> class.
+    /// </summary>
+    /// <param name="type">String representation of the unknown type.</param>
+    public UnknownType(string type) : base($"Unknown type: {type}")
+    {
+    }
+}