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{-# LANGUAGE TemplateHaskell #-}
module AsyncTest (tests, manual_main) where
import Control.Exception
import Control.Monad.Par.Scheds.Trace
import Control.Monad.Par.Scheds.TraceInternal (Par(..),Trace(Fork),runCont,runParAsync)
import Test.Framework.TH (testGroupGenerator)
import Test.Framework (defaultMain, testGroup)
import Test.Framework.Providers.HUnit
import TestHelpers
--------------------------------------------------------------------------------
-- A D E or A D B E but no C
--
-- ODD -- this passes when run manually (compiled or interpreted) but
-- fails when run through the test framework [2011.10.25].
case_async_test2 =
do x <- async2
case words x of
["A","D","E"] -> return ()
["A","D","B","E"] -> return ()
_ -> error$ "async_test2: Bad output: "++ show (words x)
async2 = collectOutput $ \ r -> do
prnt r "A"
evaluate$ runParAsync $
do
fork $ do _prnt r "B"
x <- _unsafeio$ waste_time 0.5
_prnt r$ "C "++ show x
-- _prnt r$ "C "++ show (_waste_time awhile)
_prnt r "D"
prnt r "E"
--------------------------------------------------------------------------------
tests = [ $(testGroupGenerator) ]
-- It works fine when run like this:
manual_main = do x <- async2; putStrLn x
case_async_test2
-- case_async_test1
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