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module Examples.Test.Journal(main) where
import Control.Monad
import Data.IORef
import Development.Shake
import Development.Shake.FilePath
import Examples.Util
import System.IO.Unsafe
{-# NOINLINE rebuilt #-}
rebuilt :: IORef Int
rebuilt = unsafePerformIO $ newIORef 0
main = shaken test $ \args obj -> do
want $ map obj ["a.out","b.out","c.out"]
obj "*.out" *> \out -> do
liftIO $ atomicModifyIORef rebuilt $ \a -> (a+1,())
copyFile' (out -<.> "in") out
test build obj = do
let change x = writeFile (obj $ x <.> "in") x
let count x = do
before <- readIORef rebuilt
build ["--sleep"]
after <- readIORef rebuilt
x === after - before
change "a"
change "b"
change "c"
count 3
-- test that compressing the database doesn't corrupt anything
replicateM_ 4 $ do
change "a"
count 1
change "a"
change "c"
count 2
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