import System.Cmd import System.Environment import System.FilePath import System.Exit import System.Directory import System.Process import Data.List import Control.Monad import Text.Printf import Text.Regex import Distribution.Simple.Utils import Distribution.Simple.Program import Distribution.Verbosity import Data.Maybe haddockPath = ".." "dist" "build" "haddock" "haddock" main = do test putStrLn "All tests passed!" test = do x <- doesFileExist haddockPath when (not x) $ die "you need to run 'cabal build' successfully first" contents <- getDirectoryContents "tests" args <- getArgs let (opts, spec) = span ("-" `isPrefixOf`) args let mods = case spec of x:_ | x /= "all" -> [x ++ ".hs"] _ -> filter ((==) ".hs" . takeExtension) contents let outdir = "output" let mods' = map ("tests" ) mods putStrLn "" putStrLn "Haddock version: " h1 <- runProcess haddockPath ["--version"] Nothing (Just [("haddock_datadir", "../.")]) Nothing Nothing Nothing waitForProcess h1 putStrLn "" putStrLn "GHC version: " h2 <- runProcess haddockPath ["--ghc-version"] Nothing (Just [("haddock_datadir", "../.")]) Nothing Nothing Nothing waitForProcess h2 putStrLn "" libdir <- rawSystemStdout normal haddockPath ["--print-ghc-libdir"] let basepath = init libdir ++ "/../../share/doc/ghc/html/libraries/base-4.2.0.0/" let base = "-i " ++ basepath ++ "," ++ basepath ++ "base.haddock" let processpath = init libdir ++ "/../../share/doc/ghc/html/libraries/process-1.0.1.2/" let process = "-i " ++ processpath ++ "," ++ processpath ++ "process.haddock" putStrLn "Running tests..." handle <- runProcess haddockPath (["-w", "-o", outdir, "-h", "--optghc=-fglasgow-exts" , "--optghc=-w", base, process] ++ opts ++ mods') Nothing (Just [("haddock_datadir", "../.")]) Nothing Nothing Nothing code <- waitForProcess handle when (code /= ExitSuccess) $ error "Haddock run failed! Exiting." check mods (if not (null args) && args !! 0 == "all" then False else True) check modules strict = do forM_ modules $ \mod -> do let outfile = "output" (dropExtension mod ++ ".html") let reffile = "tests" dropExtension mod ++ ".html.ref" b <- doesFileExist reffile if b then do copyFile reffile ("output" takeFileName reffile) out <- readFile outfile ref <- readFile reffile if not $ haddockEq out ref then do putStrLn $ "Output for " ++ mod ++ " has changed! Exiting with diff:" let ref' = stripLinks ref out' = stripLinks out let reffile' = "output" takeFileName reffile ++ ".nolinks" outfile' = "output" takeFileName outfile ++ ".nolinks" writeFile reffile' ref' writeFile outfile' out' b <- programOnPath "colordiff" if b then system $ "colordiff " ++ reffile' ++ " " ++ outfile' else system $ "diff " ++ reffile' ++ " " ++ outfile' if strict then exitFailure else return () else do putStrLn $ "Pass: " ++ mod else do putStrLn $ "Pass: " ++ mod ++ " (no .ref file)" haddockEq file1 file2 = stripLinks file1 == stripLinks file2 stripLinks f = subRegex (mkRegexWithOpts "]*>" False False) f "" programOnPath p = do result <- findProgramLocation silent p return (isJust result)