[MO-java-users] Mocking Files

[Chris S. <cst...@sd...>]

Hello,

        I'd like to be able to use MockObjects with a fairly complicated
FileFilter-implementing class.  In particular, I'd like to be able to set
up a pseudo-directory tree (thanks to MockFile) and then verify that everything
found is as it should be.  However, I find that the class I want to test can't
take a File as an argument to the method that searches the directory, because
then I can't use a MockFile (similarly, the FileFilter-implementing
class can't have an accept(MockFile mf) since that doesn't fulfil the
interface).

        Is the right thing to have two versions of each method, or to implement
some interface (MyFile) with a class that delegates to a real File in real
code, and a MockFile in testing?

        Thanks,
        --chris sterritt