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 | This is a testsuite for Haddock that uses the concept of "golden files". That
is, it compares output files against a set of reference files.
To add a new test: 
 1) Create a module in the "tests" directory.
 2) Run runtests.hs. You should now have output/<modulename>.html. The test
    passes since there is no reference file to compare with.
 3) To make a reference file from the output file, do
      runhaskell copy.hs <modulename>
Tips and tricks:
You can
  runhaskell copy.hs
to copy all output files into reference files.
You can
  runhaskell runtests.hs all
to continue despite a failing test.
You can pass extra options to haddock like so
  runhaskell runtests.hs --title="All Tests" all
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