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{-# LANGUAGE LambdaCase #-}
import Development.Shake
import Development.Shake.Command
import Development.Shake.FilePath
import System.Directory
import Text.Printf
-- Overlays and detecting removal
-- ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
--
-- Test directories are created from files in base directory and overlay. The
-- goal it to make as little copying as possible, without sacrificing
-- correctness.
--
-- Since it can't be assumed, that test directory could be re-used, pristing
-- test directory as tar archive, and re-unpacked on every test invocation.
-- Having pristing test directory in unpacked state would require even less
-- copying, but making Shake detect file removal in base directory and/or
-- overlay is rather complicated: it would require saving list of files during
-- previous invocation, and Shake does not like files being both read and
-- written by same rule.
--
-- This way, change of any source file for pristing tar archive causes whole
-- archive recreation. This is quite unfortunate.
-- Add dependency on dh_runit.
needSources :: Action ()
needSources = do
need ["dh_runit"]
dataFiles <- getDirectoryFiles "data" ["//*"]
need $ map ("data" </>) dataFiles
main :: IO ()
main = shakeArgs shakeOptions $ do
action $ do
let checklog t = printf "t/out/%s.log" t
checks <- getDirectoryDirs "t/checks"
need $ map checklog checks
-- See note [Overlays and detecting removal]
"t/out/*.tar" %> \out -> do
let check = takeBaseName out
base = "t/base/default"
overlay = "t/checks" </> check
baseFiles <- getDirectoryFiles base ["//*"]
overlayFiles <- getDirectoryFiles overlay ["//*"]
-- FIXME: hard links instead of copyFile' would save copying.
withTempDir $ \tmpdir -> do
let doCopy from f = copyFile' (from </> f) (tmpdir </> f)
forP baseFiles $ doCopy base
forP overlayFiles $ doCopy overlay
cmd_ (Cwd tmpdir) "tar cf ../archive.tar ."
cmd_ "mv" (tmpdir </> "../archive.tar") out
"t/out/*.log" %> \out -> do
let check = takeBaseName out
tar = printf "t/out/%s.tar" check
checkdir = printf "t/out/%s" check
need [tar]
needSources
cwd <- liftIO getCurrentDirectory
cmd_ "rm -fr" checkdir
cmd_ "mkdir -p" checkdir -- FIXME: avoid external process,
cmd_ (Cwd checkdir) "tar xf" (".." </> check <.> "tar")
cmd_ (Cwd checkdir) "chmod +x check"
opts <- getEnv "AUTOPKGTEST" >>= \case
Just _ -> pure []
Nothing -> pure $
[ AddEnv "DH_AUTOSCRIPTDIR" cwd
, AddEnv "DH_RUNIT_DATADIR" $ cwd </> "data"
, AddPath [cwd] []
] {- local test -}
command_ (Cwd checkdir : opts) "dh_runit" []
cmd_ (Cwd checkdir) (FileStdout out) "prove ./check"
|
