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Update the deadlocks* predicates to handle STMDeadlock, and add exceptions* predicates

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This commit is contained in:
Michael Walker 2015-02-17 05:58:25 +00:00
parent 22a15dfe95
commit 998fdeb833
1 changed files with 20 additions and 4 deletions
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24
Test/DejaFu.hs
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@ -73,6 +73,9 @@ module Test.DejaFu
, deadlocksNever
, deadlocksAlways
, deadlocksSometimes
, exceptionsNever
, exceptionsAlways
, exceptionsSometimes
, alwaysSame
, notAlwaysSame
, alwaysTrue
@ -85,6 +88,7 @@ import Control.Applicative ((<$>))
import Control.Arrow (first)
import Control.DeepSeq (NFData(..))
import Control.Monad (when)
import Data.List (nub)
import Data.List.Extra
import Data.Monoid (mconcat)
import Test.DejaFu.Deterministic
@ -182,7 +186,7 @@ runTestIO' pb predicate conc = do
-- | Strip out duplicates
uniques :: Eq a => [(a, Trace)] -> [(a, Trace)]
uniques = sortNubBy simplicity
uniques = nub . sortNubBy simplicity
-- | Determine which of two failures is simpler, if they are comparable.
simplicity :: Eq a => (a, Trace) -> (a, Trace) -> Maybe Ordering
@ -218,15 +222,27 @@ type Predicate a = [(Either Failure a, Trace)] -> Result a
-- | Check that a computation never deadlocks.
deadlocksNever :: Predicate a
deadlocksNever = alwaysTrue (not . either (==Deadlock) (const False))
deadlocksNever = alwaysTrue (not . either (`elem` [Deadlock, STMDeadlock]) (const False))
-- | Check that a computation always deadlocks.
deadlocksAlways :: Predicate a
deadlocksAlways = alwaysTrue $ either (==Deadlock) (const False)
deadlocksAlways = alwaysTrue $ either (`elem` [Deadlock, STMDeadlock]) (const False)
-- | Check that a computation deadlocks at least once.
deadlocksSometimes :: Predicate a
deadlocksSometimes = somewhereTrue $ either (==Deadlock) (const False)
deadlocksSometimes = somewhereTrue $ either (`elem` [Deadlock, STMDeadlock]) (const False)
-- | Check that a computation never fails with an uncaught exception.
exceptionsNever :: Predicate a
exceptionsNever = alwaysTrue (not . either (==UncaughtException) (const False))
-- | Check that a computation always fails with an uncaught exception.
exceptionsAlways :: Predicate a
exceptionsAlways = alwaysTrue $ either (==UncaughtException) (const False)
-- | Check that a computation fails with an uncaught exception at least once.
exceptionsSometimes :: Predicate a
exceptionsSometimes = somewhereTrue $ either (==UncaughtException) (const False)
-- | Check that the result of a computation is always the same. In
-- particular this means either: (a) it always deadlocks, or (b) the