cabal-testsuite/PackageTests/Manpage/cabal.test.hs

   1 import System.Process
   2 import Distribution.System (OS(Windows,Linux,OSX), buildOS)
   3 import Test.Cabal.Prelude
   4
   5 main = cabalTest $ do
   6     r <- cabal' "man" ["--raw"]
   7     assertOutputContains ".B cabal install" r
   8     assertOutputDoesNotContain ".B cabal manpage" r
   9
  10     -- The following test of `cabal man` needs `nroff` which is not available under Windows and OSX.
  11     unless (buildOS == Windows || buildOS ==OSX) $ do
  12
  13       -- Check that output of `cabal man --raw` can be passed through `nroff -man`
  14       -- without producing any warnings (which are printed to stderr).
  15       --
  16       -- NB: runM is not suitable as it mixes stdout and stderr
  17       -- r2 <- runM "nroff" ["-man", "/dev/stdin"] $ Just $ resultOutput r
  18       (ec, _output, errors) <- liftIO $
  19         readProcessWithExitCode "nroff" ["-man", "/dev/stdin"] $ resultOutput r
  20       unless (null errors) $
  21         assertFailure $ unlines
  22           [ "Error: unexpected warnings produced by `nroff -man`:"
  23           , errors
  24           ]