How to UnitTest a custom Exeption with SerializationInfo correctly?-CodePudding

I have my own Exception and because of SonarQube I implemented all 4 base constructures of System.Exception:

[Serializable]
public class DatabaseVersionNotReadableException : Exception
{
    private static readonly string Text = "Database Version not found or not readable: {0}";
    
    public DatabaseVersionNotReadableException()
    {
        
    }
    
    public DatabaseVersionNotReadableException(string version)
        : base(String.Format(Text, version))
    {

    }
    
    public DatabaseVersionNotReadableException(string version, Exception exception) : base(String.Format(Text, version), exception)
    {
        
    }
    
    protected DatabaseVersionNotReadableException(SerializationInfo info, StreamingContext context)
        : base(info, context)
    {
        
    }
}

To unit test the first 3 const was very easy, but I have no idea how to setup a SerializationInfo and / or StreamingContext correctly to even get a simple test together. I tried find it out with google, but there seem to be no information about it.

How to unit test it?

CodePudding user response：

That API is used by BinaryFormatter for custom deserialization; so: serialize and deserialize your exception with BinaryFormatter.

Except, don't; BinaryFormatter is obsolete, deprecated and dangerous. IMO, unless you absolutely need that capability (for example, you're using "remoting" in .NET Framework and anticipate this exception going over the remoted boundary): just don't include it, and don't add [Serializable].