title: reusing test suites with multiple implementations?
body: <p>I'm testing with nUnit.  I have a suite of tests that run against my IFoo interface; the Test Fixture Setup determines which IFoo implementation to load and test.</p>
  
  <p>I'm trying to figure out how to run the same suite against a list of IFoo implementaions, but don't see any way to test all implementations without manually modifying the Setup.</p>
  
  <p>Has anyone tackled this problem?</p>