From b141f3594df0deee4026ef6d52b73361f1692f4a Mon Sep 17 00:00:00 2001 From: Jonas Claeson Date: Tue, 11 Jun 2019 18:26:41 +0200 Subject: [PATCH] Add a few QuickCheck tests of the channel interface --- dns/dns.h | 2 +- tests/quickcheck/LICENSE.txt | 674 ++++++++++++++++++++++ tests/quickcheck/README.md | 36 ++ tests/quickcheck/Setup.hs | 2 + tests/quickcheck/libdill-quickcheck.cabal | 26 + tests/quickcheck/stack.yaml | 68 +++ tests/quickcheck/test/ChannelQC.hs | 157 +++++ tests/quickcheck/test/FFI/Channels.hs | 75 +++ tests/quickcheck/test/FFI/Handles.hs | 19 + tests/quickcheck/test/FFI/Helpers.hs | 22 + tests/quickcheck/test/FFI/TestCaseFFI.hs | 53 ++ tests/quickcheck/test/FFI/lib/test-ffi.c | 40 ++ tests/quickcheck/test/FFI/lib/test-ffi.h | 11 + tests/quickcheck/test/QuickCheck.hs | 13 + 14 files changed, 1197 insertions(+), 1 deletion(-) create mode 100644 tests/quickcheck/LICENSE.txt create mode 100644 tests/quickcheck/README.md create mode 100644 tests/quickcheck/Setup.hs create mode 100644 tests/quickcheck/libdill-quickcheck.cabal create mode 100644 tests/quickcheck/stack.yaml create mode 100644 tests/quickcheck/test/ChannelQC.hs create mode 100644 tests/quickcheck/test/FFI/Channels.hs create mode 100644 tests/quickcheck/test/FFI/Handles.hs create mode 100644 tests/quickcheck/test/FFI/Helpers.hs create mode 100644 tests/quickcheck/test/FFI/TestCaseFFI.hs create mode 100644 tests/quickcheck/test/FFI/lib/test-ffi.c create mode 100644 tests/quickcheck/test/FFI/lib/test-ffi.h create mode 100644 tests/quickcheck/test/QuickCheck.hs diff --git a/dns/dns.h b/dns/dns.h index 7eb3e7d6..4426ee0d 100644 --- a/dns/dns.h +++ b/dns/dns.h @@ -144,7 +144,7 @@ extern int dns_debug; #define dns_quietinit(...) \ DNS_PRAGMA_PUSH DNS_PRAGMA_QUIET __VA_ARGS__ DNS_PRAGMA_POP -#elif (__GNUC__ == 4 && __GNUC_MINOR__ >= 6) || __GNUC__ > 4 +#elif (__GNUC__ == 4 && __GNUC_MINOR__ >= 6) || (__GNUC__ > 4 && __GNUC__ < 9) #define DNS_PRAGMA_PUSH _Pragma("GCC diagnostic push") #define DNS_PRAGMA_QUIET _Pragma("GCC diagnostic ignored \"-Woverride-init\"") #define DNS_PRAGMA_POP _Pragma("GCC diagnostic pop") diff --git a/tests/quickcheck/LICENSE.txt b/tests/quickcheck/LICENSE.txt new file mode 100644 index 00000000..f288702d --- /dev/null +++ b/tests/quickcheck/LICENSE.txt @@ -0,0 +1,674 @@ + GNU GENERAL PUBLIC LICENSE + Version 3, 29 June 2007 + + Copyright (C) 2007 Free Software Foundation, Inc. + Everyone is permitted to copy and distribute verbatim copies + of this license document, but changing it is not allowed. + + Preamble + + The GNU General Public License is a free, copyleft license for +software and other kinds of works. + + The licenses for most software and other practical works are designed +to take away your freedom to share and change the works. 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If not, see . + +Also add information on how to contact you by electronic and paper mail. + + If the program does terminal interaction, make it output a short +notice like this when it starts in an interactive mode: + + Copyright (C) + This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'. + This is free software, and you are welcome to redistribute it + under certain conditions; type `show c' for details. + +The hypothetical commands `show w' and `show c' should show the appropriate +parts of the General Public License. Of course, your program's commands +might be different; for a GUI interface, you would use an "about box". + + You should also get your employer (if you work as a programmer) or school, +if any, to sign a "copyright disclaimer" for the program, if necessary. +For more information on this, and how to apply and follow the GNU GPL, see +. + + The GNU General Public License does not permit incorporating your program +into proprietary programs. If your program is a subroutine library, you +may consider it more useful to permit linking proprietary applications with +the library. If this is what you want to do, use the GNU Lesser General +Public License instead of this License. But first, please read +. diff --git a/tests/quickcheck/README.md b/tests/quickcheck/README.md new file mode 100644 index 00000000..c19c3210 --- /dev/null +++ b/tests/quickcheck/README.md @@ -0,0 +1,36 @@ +# Testing libdill with QuickCheck +Demonstrates how to test monadic C-code using [QuickCheck](https://en.wikipedia.org/wiki/QuickCheck) and property-based testing. + +## Environment +In order to run these tests at least the following is needed: +- A C compiler +- [Stack](https://haskellstack.org/) + +## Building +Build the library from the top-level of the libdill repo: + +```shell +./autogen.sh +./configure --enable-debug +make +``` + +## Testing +Test the library with QuickCheck: + +```shell +cd test/quickcheck +stack test +``` + +Test the library in GHCi: +```shell +cd test/quickchek +stack ghci libdill-quickcheck:libdill-quickcheck-test +``` + +and then in the GHCi prompt +```shell +> main ++++ OK, passed 10000 tests. +``` diff --git a/tests/quickcheck/Setup.hs b/tests/quickcheck/Setup.hs new file mode 100644 index 00000000..9a994af6 --- /dev/null +++ b/tests/quickcheck/Setup.hs @@ -0,0 +1,2 @@ +import Distribution.Simple +main = defaultMain diff --git a/tests/quickcheck/libdill-quickcheck.cabal b/tests/quickcheck/libdill-quickcheck.cabal new file mode 100644 index 00000000..a7c45010 --- /dev/null +++ b/tests/quickcheck/libdill-quickcheck.cabal @@ -0,0 +1,26 @@ +name: libdill-quickcheck +version: 0.1.0.0 +build-type: Simple +cabal-version: >=1.10 + +test-suite libdill-quickcheck-test + type: exitcode-stdio-1.0 + hs-source-dirs: test + main-is: QuickCheck.hs + other-modules: ChannelQC + , FFI.Channels + , FFI.Handles + , FFI.Helpers + , FFI.TestCaseFFI + build-depends: base + , containers + , test-framework + , test-framework-quickcheck2 + , QuickCheck + , array + includes: libdill.h + , test-ffi.h + c-sources: test/FFI/lib/test-ffi.c + extra-libraries: dill + ghc-options: -threaded -rtsopts -with-rtsopts=-N -dynamic + default-language: Haskell2010 diff --git a/tests/quickcheck/stack.yaml b/tests/quickcheck/stack.yaml new file mode 100644 index 00000000..80138e18 --- /dev/null +++ b/tests/quickcheck/stack.yaml @@ -0,0 +1,68 @@ +# This file was automatically generated by 'stack init' +# +# Some commonly used options have been documented as comments in this file. +# For advanced use and comprehensive documentation of the format, please see: +# https://docs.haskellstack.org/en/stable/yaml_configuration/ + +# Resolver to choose a 'specific' stackage snapshot or a compiler version. +# A snapshot resolver dictates the compiler version and the set of packages +# to be used for project dependencies. For example: +# +# resolver: lts-3.5 +# resolver: nightly-2015-09-21 +# resolver: ghc-7.10.2 +# +# The location of a snapshot can be provided as a file or url. Stack assumes +# a snapshot provided as a file might change, whereas a url resource does not. +# +# resolver: ./custom-snapshot.yaml +# resolver: https://example.com/snapshots/2018-01-01.yaml +resolver: lts-13.14 + +# User packages to be built. +# Various formats can be used as shown in the example below. +# +# packages: +# - some-directory +# - https://example.com/foo/bar/baz-0.0.2.tar.gz +# - location: +# git: https://github.com/commercialhaskell/stack.git +# commit: e7b331f14bcffb8367cd58fbfc8b40ec7642100a +# - location: https://github.com/commercialhaskell/stack/commit/e7b331f14bcffb8367cd58fbfc8b40ec7642100a +# subdirs: +# - auto-update +# - wai +packages: +- . +# Dependency packages to be pulled from upstream that are not in the resolver +# using the same syntax as the packages field. +# (e.g., acme-missiles-0.3) +# extra-deps: [] + +# Override default flag values for local packages and extra-deps +# flags: {} + +# Extra package databases containing global packages +# extra-package-dbs: [] + +# Control whether we use the GHC we find on the path +# system-ghc: true +# +# Require a specific version of stack, using version ranges +# require-stack-version: -any # Default +# require-stack-version: ">=1.9" +# +# Override the architecture used by stack, especially useful on Windows +# arch: i386 +# arch: x86_64 +# +# Extra directories used by stack for building +extra-include-dirs: +- ../.. +- ../../dns +- test/FFI/lib +extra-lib-dirs: +- ../../.libs + +# Allow a newer minor version of GHC than the snapshot specifies +# compiler-check: newer-minor diff --git a/tests/quickcheck/test/ChannelQC.hs b/tests/quickcheck/test/ChannelQC.hs new file mode 100644 index 00000000..b5e4b0de --- /dev/null +++ b/tests/quickcheck/test/ChannelQC.hs @@ -0,0 +1,157 @@ +{- + Copyright 2019, Mokshasoft AB (mokshasoft.com) + + This software may be distributed and modified according to the terms of + the GNU General Public License version 3. Note that NO WARRANTY is provided. + See "LICENSE.txt" for details. + -} +{- + Test the libdill channel interface using QuickCheck + -} +module ChannelQC + ( quickcheckChannel + ) where + +import qualified Control.Exception as CE +import Control.Monad +import Data.Maybe +import Foreign.C.Types +import Foreign.Storable +import Test.QuickCheck +import Test.QuickCheck.Monadic + +import FFI.Channels +import FFI.Handles +import FFI.Helpers +import FFI.TestCaseFFI + +-- |Top-level function that runs all libdill channel QuickCheck tests. +quickcheckChannel :: IO () +quickcheckChannel = do + quickCheck (withMaxSuccess 10000 prop_GetChannel) + quickCheck (withMaxSuccess 10000 prop_ReceiverWaitsForSender) + quickCheck (withMaxSuccess 1000 prop_SimultaneousSenders) + quickCheck (withMaxSuccess 1000 prop_SimultaneousReceivers) + quickCheck (withMaxSuccess 100 prop_chdoneUnblocksSenders) + +-- |Print a string and trigger an assert +triggerAssert :: String -> IO () +triggerAssert str = do + putStrLn str + CE.assert False $ return () + +-- |Get a channel +getChannel :: IO (CInt, CInt) +getChannel = do + ch <- dill_chmake + unless (isJust ch) $ triggerAssert "Failed to get channel" + return $ fromMaybe (0, 0) ch + +-- |Close a channel +closeChannel :: (CInt, CInt) -> IO () +closeChannel channel = do + rc1 <- dill_hclose (snd channel) + unless (rc1 == 0) $ triggerAssert "Failed to close receiver end-point" + rc2 <- dill_hclose (fst channel) + unless (rc2 == 0) $ triggerAssert "Failed to close sender end-point" + +-- |Close all handles +closeAllHandles :: [CInt] -> IO () +closeAllHandles handles = do + rcs <- mapM dill_hclose handles + unless (all (== 0) rcs) $ triggerAssert "Failed to close all handles" + +-- |Test that dill_chmake returns a channel (not really a property test) +prop_GetChannel :: Property +prop_GetChannel = + monadicIO $ run testProp + where + testProp :: IO () + testProp = do + channel <- getChannel + closeChannel channel + +-- |Test that a receiver waits for the sender +prop_ReceiverWaitsForSender :: CInt -> Property +prop_ReceiverWaitsForSender val = + monadicIO $ do + res <- run testProp + assert res + where + testProp :: IO Bool + testProp = do + channel <- getChannel + hdl <- ffi_go_sender (fst channel) val + unless (isJust hdl) $ triggerAssert "Failed to get sender handle" + let handle = fromMaybe 0 hdl + rv <- dill_chrecv_int (snd channel) + unless (isJust rv) $ triggerAssert "Failed to receive value" + let retVal = fromMaybe 0 rv + closeChannel channel + rc <- dill_hclose handle + unless (rc == 0) $ triggerAssert "Failed to close sender handle" + return $ val == retVal + +-- |Test multiple simultaneous senders, each sender sends one value +prop_SimultaneousSenders :: NonEmptyList CInt -> Property +prop_SimultaneousSenders (NonEmpty vs) = + monadicIO $ do + res <- run testProp + assert res + where + testProp :: IO Bool + testProp = do + channel <- getChannel + hdls <- mapM (ffi_go_sender (fst channel)) vs + unless (all isJust hdls) $ + triggerAssert "Failed to get all sender handles" + let handles = map (fromMaybe 0) hdls + rvs <- mapM (\_ -> dill_chrecv_int (snd channel)) handles + unless (all isJust rvs) $ triggerAssert "Failed to receive all values" + let retVals = map (fromMaybe 0) rvs + closeChannel channel + closeAllHandles handles + return $ vs == retVals + +-- |Test multiple simultaneous receivers, each sender sends one value +prop_SimultaneousReceivers :: NonEmptyList CInt -> Property +prop_SimultaneousReceivers (NonEmpty vs) = + monadicIO $ do + res <- run testProp + assert res + where + testProp :: IO Bool + testProp = do + channel <- getChannel + hdls <- mapM (ffi_go_receiver (fst channel)) vs + unless (all isJust hdls) $ + triggerAssert "Failed to get all receiver handles" + let handles = map (fromMaybe 0) hdls + rcs <- mapM (dill_chsend_int (snd channel)) vs + unless (all (== 0) rcs) $ triggerAssert "Failed to send all values" + closeChannel channel + closeAllHandles handles + return True -- ffi_go_receiver checks that the received values are correct + +-- |Test that chdone unblocks all senders +prop_chdoneUnblocksSenders :: NonEmptyList CInt -> Property +prop_chdoneUnblocksSenders (NonEmpty vs) = + monadicIO $ do + res <- run testProp + assert res + where + testProp :: IO Bool + testProp = do + channel <- getChannel + hdls <- mapM (ffi_go_sender_unblocked (fst channel)) vs + unless (all isJust hdls) $ + triggerAssert "Failed to get all sender handles" + let handles = map (fromMaybe 0) hdls + now <- dill_now + rc1 <- dill_msleep $ now + 50 + unless (rc1 == 0) $ triggerAssert "Failed to sleep" + rc2 <- dill_chdone (snd channel) + unless (rc2 == 0) $ triggerAssert "Failed to close channel" + closeChannel channel + closeAllHandles handles + return True diff --git a/tests/quickcheck/test/FFI/Channels.hs b/tests/quickcheck/test/FFI/Channels.hs new file mode 100644 index 00000000..1e034b7e --- /dev/null +++ b/tests/quickcheck/test/FFI/Channels.hs @@ -0,0 +1,75 @@ +{- + Copyright 2019, Mokshasoft AB (mokshasoft.com) + + This software may be distributed and modified according to the terms of + the GNU General Public License version 3. Note that NO WARRANTY is provided. + See "LICENSE.txt" for details. + -} +{-# LANGUAGE ForeignFunctionInterface #-} + +{- + FFI for the channels part of libdill.h + -} +module FFI.Channels + ( dill_chmake + , dill_chsend_int + , dill_chrecv_int + , dill_chdone + ) where + +import Control.Monad +import Foreign.C +import Foreign.Marshal.Alloc +import Foreign.Marshal.Array +import Foreign.Ptr +import Foreign.Storable + +-- int dill_chmake(int chv[2]); +dill_chmake :: IO (Maybe (CInt, CInt)) +dill_chmake = do + ch <- newArray [0, 0] + pokeElemOff ch 0 0 + pokeElemOff ch 1 0 + -- Create channel endpoint handles and check that it worked + res <- internal_dill_chmake ch + if res /= 0 + then return Nothing + else do + ep1 <- peekElemOff ch 0 + ep2 <- peekElemOff ch 1 + if ep1 >= 0 && ep2 >= 0 + then return $ Just (ep1, ep2) + else return Nothing + +foreign import ccall "dill_chmake" internal_dill_chmake :: Ptr CInt -> IO CInt + +dill_chsend_int :: CInt -> CInt -> IO CInt +dill_chsend_int ch value = do + val <- malloc + pokeElemOff val 0 value + let valSize = fromIntegral (sizeOf value) + res <- internal_dill_chsend_int ch val valSize (-1) + free val + return res + +foreign import ccall "dill_chsend" internal_dill_chsend_int + :: CInt -> Ptr CInt -> CInt -> CInt -> IO CInt + +dill_chrecv_int :: CInt -> IO (Maybe CInt) +dill_chrecv_int ch = do + val <- malloc + let valSize = fromIntegral (sizeOf (0 :: CInt)) + res <- internal_dill_chrecv_int ch val valSize (-1) + ret <- + if res /= 0 + then return Nothing + else do + v <- peekElemOff val 0 + return $ Just v + free val + return ret + +foreign import ccall "dill_chrecv" internal_dill_chrecv_int + :: CInt -> Ptr CInt -> CInt -> CInt -> IO CInt + +foreign import ccall "dill_chdone" dill_chdone :: CInt -> IO CInt diff --git a/tests/quickcheck/test/FFI/Handles.hs b/tests/quickcheck/test/FFI/Handles.hs new file mode 100644 index 00000000..c65a6114 --- /dev/null +++ b/tests/quickcheck/test/FFI/Handles.hs @@ -0,0 +1,19 @@ +{- + Copyright 2019, Mokshasoft AB (mokshasoft.com) + + This software may be distributed and modified according to the terms of + the GNU General Public License version 3. Note that NO WARRANTY is provided. + See "LICENSE.txt" for details. + -} +{-# LANGUAGE ForeignFunctionInterface #-} + +{- + FFI for the handles part of libdill.h + -} +module FFI.Handles + ( dill_hclose + ) where + +import Foreign.C + +foreign import ccall "dill_hclose" dill_hclose :: CInt -> IO CInt diff --git a/tests/quickcheck/test/FFI/Helpers.hs b/tests/quickcheck/test/FFI/Helpers.hs new file mode 100644 index 00000000..1b53d4d5 --- /dev/null +++ b/tests/quickcheck/test/FFI/Helpers.hs @@ -0,0 +1,22 @@ +{- + Copyright 2019, Mokshasoft AB (mokshasoft.com) + + This software may be distributed and modified according to the terms of + the GNU General Public License version 3. Note that NO WARRANTY is provided. + See "LICENSE.txt" for details. + -} +{-# LANGUAGE ForeignFunctionInterface #-} + +{- + FFI for the helpers part of libdill.h + -} +module FFI.Helpers + ( dill_now + , dill_msleep + ) where + +import Foreign.C + +foreign import ccall "dill_now" dill_now :: IO CLong + +foreign import ccall "dill_msleep" dill_msleep :: CLong -> IO CInt diff --git a/tests/quickcheck/test/FFI/TestCaseFFI.hs b/tests/quickcheck/test/FFI/TestCaseFFI.hs new file mode 100644 index 00000000..3f7c4b19 --- /dev/null +++ b/tests/quickcheck/test/FFI/TestCaseFFI.hs @@ -0,0 +1,53 @@ +{- + Copyright 2019, Mokshasoft AB (mokshasoft.com) + + This software may be distributed and modified according to the terms of + the GNU General Public License version 3. Note that NO WARRANTY is provided. + See "LICENSE.txt" for details. + -} +{-# LANGUAGE ForeignFunctionInterface #-} + +{- + FFI used by the test cases to handle go and coroutine macros + -} +module FFI.TestCaseFFI + ( ffi_go_sender + , ffi_go_sender_unblocked + , ffi_go_receiver + ) where + +import qualified Control.Exception as CE +import Foreign.C +import Foreign.Ptr + +import FFI.Channels + +ffi_go_sender :: CInt -> CInt -> IO (Maybe CInt) +ffi_go_sender ch val = do + hdl <- internal_ffi_go_sender ch val + if hdl < 0 + then return Nothing + else return (Just hdl) + +foreign import ccall "ffi_go_sender" internal_ffi_go_sender + :: CInt -> CInt -> IO CInt + +ffi_go_sender_unblocked :: CInt -> CInt -> IO (Maybe CInt) +ffi_go_sender_unblocked ch val = do + hdl <- internal_ffi_go_sender_unblocked ch val + if hdl < 0 + then return Nothing + else return (Just hdl) + +foreign import ccall "ffi_go_sender_unblocked" internal_ffi_go_sender_unblocked + :: CInt -> CInt -> IO CInt + +ffi_go_receiver :: CInt -> CInt -> IO (Maybe CInt) +ffi_go_receiver ch expected = do + hdl <- internal_ffi_go_receiver ch expected + if hdl < 0 + then return Nothing + else return (Just hdl) + +foreign import ccall "ffi_go_receiver" internal_ffi_go_receiver + :: CInt -> CInt -> IO CInt diff --git a/tests/quickcheck/test/FFI/lib/test-ffi.c b/tests/quickcheck/test/FFI/lib/test-ffi.c new file mode 100644 index 00000000..091b8e1d --- /dev/null +++ b/tests/quickcheck/test/FFI/lib/test-ffi.c @@ -0,0 +1,40 @@ +/* + * Copyright 2019, Mokshasoft AB (mokshasoft.com) + * + * This software may be distributed and modified according to the terms of + * the GNU General Public License version 3. Note that NO WARRANTY is provided. + * See "LICENSE.txt" for details. + */ + +#include "test-ffi.h" +#include "libdill.h" +#include "tests/assert.h" + +coroutine void sender(int ch, int val) { + int rc = chsend(ch, &val, sizeof(val), -1); + errno_assert(rc == 0); +} + +int ffi_go_sender(int ch, int val) { + return go(sender(ch, val)); +} + +coroutine void sender_unblocked(int ch, int val) { + int rc = chsend(ch, &val, sizeof(val), -1); + errno_assert(rc == -1 && errno == EPIPE); +} + +int ffi_go_sender_unblocked(int ch, int val) { + return go(sender_unblocked(ch, val)); +} + +coroutine void receiver(int ch, int expected) { + int val; + int rc = chrecv(ch, &val, sizeof(val), -1); + errno_assert(rc == 0); + assert(val == expected); +} + +int ffi_go_receiver(int ch, int expected) { + return go(receiver(ch, expected)); +} diff --git a/tests/quickcheck/test/FFI/lib/test-ffi.h b/tests/quickcheck/test/FFI/lib/test-ffi.h new file mode 100644 index 00000000..df6aad1b --- /dev/null +++ b/tests/quickcheck/test/FFI/lib/test-ffi.h @@ -0,0 +1,11 @@ +/* + * Copyright 2019, Mokshasoft AB (mokshasoft.com) + * + * This software may be distributed and modified according to the terms of + * the GNU General Public License version 3. Note that NO WARRANTY is provided. + * See "LICENSE.txt" for details. + */ + +int ffi_go_sender(int ch, int val); +int ffi_go_sender_unblocked(int ch, int val); +int ffi_go_receiver(int ch, int expected); diff --git a/tests/quickcheck/test/QuickCheck.hs b/tests/quickcheck/test/QuickCheck.hs new file mode 100644 index 00000000..13900b02 --- /dev/null +++ b/tests/quickcheck/test/QuickCheck.hs @@ -0,0 +1,13 @@ +{- + Copyright 2019, Mokshasoft AB (mokshasoft.com) + + This software may be distributed and modified according to the terms of + the GNU General Public License version 3. Note that NO WARRANTY is provided. + See "LICENSE.txt" for details. + -} +import ChannelQC + +-- |Top-level function that runs all libdill QuickCheck tests. +main :: IO () +main = do + quickcheckChannel