title: ARC, bridged cast and GHUnit
body: <p>I'm followinng tutorial from <a href="http://gabriel.github.com/gh-unit/docs/appledoc_include/guide_testing.html" rel="noreferrer">http://gabriel.github.com/gh-unit/docs/appledoc_include/guide_testing.html</a>. The problem is that my project uses ARC and GHUnit doesn't. I managed previous errors, but now i should do bridged cast, that i've never used, and i'm lost.</p>
  
  <pre><code>NSString *string1 = @"a string";
  GHAssertNotNULL(string1, nil); //error here
  </code></pre>
  
  <p>Error description: Implicit conversion of Objective-C pointer type 'NSString *' to C pointer type 'const void *' requires a bridged cast.</p>
  
  <p>Any help welcome :)</p>