LaTeX tests setup

1 files changed, 162 insertions, 0 deletions

diff --git a/latex-test/run.lhs b/latex-test/run.lhs
new file mode 100755
index 00000000..423dc6fd
--- /dev/null
+++ b/latex-test/run.lhs
@@ -0,0 +1,162 @@
+#!/usr/bin/env runhaskell
+\begin{code}
+{-# LANGUAGE CPP #-}
+import Prelude hiding (mod)
+import Control.Monad
+import Control.Applicative
+import Data.List
+import Data.Maybe
+import Distribution.InstalledPackageInfo
+import Distribution.Package (PackageName (..))
+import Distribution.Simple.Compiler
+import Distribution.Simple.GHC
+import Distribution.Simple.PackageIndex
+import Distribution.Simple.Program
+import Distribution.Simple.Utils
+import Distribution.Verbosity
+import System.IO
+import System.Directory
+import System.Environment
+import System.Exit
+import System.FilePath
+import System.Process (ProcessHandle, runProcess, waitForProcess, system)
+
+
+packageRoot, dataDir, haddockPath, baseDir, testDir, outDir, refDir :: FilePath
+baseDir = takeDirectory __FILE__
+testDir       = baseDir </> "src"
+refDir        = baseDir </> "ref"
+outDir        = baseDir </> "out"
+packageRoot   = baseDir </> ".."
+dataDir       = packageRoot </> "resources"
+haddockPath   = packageRoot </> "dist" </> "build" </> "haddock" </> "haddock"
+
+
+main :: IO ()
+main = do
+  test
+  putStrLn "All tests passed!"
+
+
+test :: IO ()
+test = do
+  x <- doesFileExist haddockPath
+  unless x $ die "you need to run 'cabal build' successfully first"
+
+  contents <- getDirectoryContents testDir
+
+  args <- getArgs
+  let (opts, spec) = span ("-" `isPrefixOf`) args
+      isDir x' = liftM2 (&&) (doesDirectoryExist $ testDir </> x')
+                             (return $ x' /= "." && x' /= "..")
+  modDirs <- case spec of
+    y:_ | y /= "all" -> return [y]
+    _ -> filterM isDir contents
+
+  let modDirs' = map (testDir </>) modDirs
+
+  -- add haddock_datadir to environment for subprocesses
+  env <- Just . (:) ("haddock_datadir", dataDir) <$> getEnvironment
+
+  putStrLn ""
+  putStrLn "Haddock version: "
+  h1 <- runProcess haddockPath ["--version"] Nothing
+                   env Nothing Nothing Nothing
+  wait h1 "*** Running `haddock --version' failed!"
+  putStrLn ""
+  putStrLn "GHC version: "
+  h2 <- runProcess haddockPath ["--ghc-version"] Nothing
+                   env Nothing Nothing Nothing
+  wait h2 "*** Running `haddock --ghc-version' failed!"
+  putStrLn ""
+
+  -- TODO: maybe do something more clever here using haddock.cabal
+  ghcPath <- fmap init $ rawSystemStdout normal haddockPath ["--print-ghc-path"]
+  (_, _, conf) <- configure normal (Just ghcPath) Nothing defaultProgramConfiguration
+  pkgIndex <- getInstalledPackages normal [GlobalPackageDB] conf
+  let mkDep pkgName =
+        fromMaybe (error "Couldn't find test dependencies") $ do
+          let pkgs = lookupPackageName pkgIndex (PackageName pkgName)
+          (_, pkgs') <- listToMaybe pkgs
+          pkg <- listToMaybe pkgs'
+          ifacePath <- listToMaybe (haddockInterfaces pkg)
+          htmlPath <- listToMaybe (haddockHTMLs pkg)
+          return ("-i " ++ htmlPath ++ "," ++ ifacePath)
+
+  let base    = mkDep "base"
+      process = mkDep "process"
+      ghcprim = mkDep "ghc-prim"
+
+  putStrLn "Running tests..."
+
+  forM_ modDirs' $ \modDir -> do
+    testModules <- getDirectoryContents modDir
+
+    let mods = filter ((==) ".hs" . takeExtension) testModules
+        mods' = map (modDir </>) mods
+
+    unless (null mods') $ do
+      handle <- runProcess haddockPath
+                (["-w", "-o", outDir </> last (splitPath modDir), "--latex"
+                 , "--optghc=-fglasgow-exts"
+                 , "--optghc=-w", base, process, ghcprim] ++ opts ++ mods')
+                Nothing env Nothing
+                Nothing Nothing
+
+      wait handle "*** Haddock run failed! Exiting."
+
+  check modDirs (if not (null args) && args !! 0 == "all" then False else True)
+  where
+    wait :: ProcessHandle -> String -> IO ()
+    wait h msg = do
+      r <- waitForProcess h
+      unless (r == ExitSuccess) $ do
+        hPutStrLn stderr msg
+        exitFailure
+
+check :: [FilePath] -> Bool -> IO ()
+check modDirs strict = do
+  forM_ modDirs $ \modDir -> do
+    let oDir = outDir </> modDir
+        rDir = refDir </> modDir
+
+    refDirExists <- doesDirectoryExist rDir
+    when refDirExists $ do
+      -- we're not creating sub-directories, I think.
+      refFiles <- getDirectoryContents rDir >>= filterM doesFileExist
+
+      forM_ refFiles $ \rFile -> do
+        let refFile = rDir </> rFile
+            outFile = oDir </> rFile
+        oe <- doesFileExist outFile
+        if oe
+          then do
+            out <- readFile outFile
+            ref <- readFile refFile
+
+            if out /= ref
+               then do
+                 putStrLn $ "Output for " ++ modDir ++ " has changed! Exiting with diff:"
+
+                 let reffile' = outDir </> takeFileName refFile ++ ".nolinks"
+                     outfile' = outDir </> takeFileName outFile ++ ".ref.nolinks"
+                 writeFile reffile' ref
+                 writeFile outfile' out
+                 r <- programOnPath "colordiff"
+                 code <- if r
+                   then system $ "colordiff " ++ reffile' ++ " " ++ outfile'
+                   else system $ "diff " ++ reffile' ++ " " ++ outfile'
+                 if strict then exitFailure else return ()
+                 unless (code == ExitSuccess) $ do
+                   hPutStrLn stderr "*** Running diff failed!"
+                   exitFailure
+               else do
+                 putStrLn $ "Pass: " ++ modDir
+           else do
+             putStrLn $ "Pass: " ++ modDir ++ " (no .ref file)"
+
+programOnPath :: FilePath -> IO Bool
+programOnPath p = do
+  result <- findProgramLocation silent p
+  return (isJust result)
+\end{code}