UnitTest static method which use WebConfigurationManager

See more:

.NET

testing

WebConfig

, +

I have multiple props like this:

public static bool ForwardMessagesToEmail
{
    get
    {
        string forwardToEmail =
            WebConfigurationManager.AppSettings["ForwardToEmail"];
        return String.IsNullOrEmpty(forwardToEmail) ?
            false :
            forwardToEmail.ToLower() == Boolean.TrueString.ToLower();
    }
}

which I want to Unit-Test using predefined combinations of AppSettings

My problem is:
1. Is it possible without Dependency Injection (of WebConfigurationManager) ?
1.1 If so, how I can achieve this?
2. How can I populate WebConfigurationManager.AppSettings with some values and is this possible without having some extra web.config ?

Thanks a lot!