How to access the HttpServerUtility.MapPath method in a Thread or Timer?

Question

I use a System.Timers.Timer in my Asp.Net application and I need to use the HttpServerUtility.MapPath method which seems to be only available via <

Answer 1

HostingEnvironment isn't the perfect solution because it's a very difficult class to mock (see How to unit test code that uses HostingEnvironment.MapPath).

For those who need testability, a better way might be to create your own path-mapper interface as proposed by https://stackoverflow.com/a/1231962/85196, except implement it as

public class ServerPathMapper : IPathMapper { 
 public string MapPath(string relativePath) { 
      return HostingEnvironment.MapPath(relativePath); 
 } 
} 

The result is easily mockable, uses HostingEnvironment internally, and could even potentially address ase69s's concern at the same time.