cstring to string?

[cdunn2001]

Same error. Here is what I had: 
    
    
    -                    if exc.name == expected:
    +                    let name: string = exc.name.string
    +                    if name.startsWith(expected):
    
    
    Run

See? When I was comparing cstring to string, it was working, but now I need to 
test only the start (because the name changed from AssertionError to 
AssertionDefect). So now I'm wondering how the comparison worked if I am unable 
to type-convert.