{-# LANGUAGE TemplateHaskell, CPP #-}
module Main where
import qualified Examples.Hello as Hello
import qualified Examples.Commands as Commands
import qualified Examples.Cabal as Cabal
import qualified Examples.Alternatives as Alternatives
import Control.Monad
import Data.List
import Options.Applicative
import System.Exit
import Test.HUnit
import Test.Framework.Providers.HUnit
import Test.Framework.TH.Prime
#if __GLASGOW_HASKELL__ <= 702
import Data.Monoid
(<>) :: Monoid a => a -> a -> a
(<>) = mappend
#endif
run :: ParserInfo a -> [String] -> Either ParserFailure a
run = execParserPure (prefs idm)
assertLeft :: Show b => Either a b -> (a -> Assertion) -> Assertion
assertLeft x f = either f err x
where
err b = assertFailure $ "expected Left, got " ++ show b
assertRight :: Either ParserFailure b -> (b -> Assertion) -> Assertion
assertRight x f = either err f x
where
err (ParserFailure e _) = do
msg <- e "test"
assertFailure $ "unexpected parse error\n" ++ msg
assertHasLine :: String -> String -> Assertion
assertHasLine l s
| l `elem` lines s = return ()
| otherwise = assertFailure $ "expected line:\n\t" ++ l ++ "\nnot found"
checkHelpText :: Show a => String -> ParserInfo a -> [String] -> Assertion
checkHelpText name p args = do
let result = run p args
assertLeft result $ \(ParserFailure err code) -> do
expected <- readFile $ "tests/" ++ name ++ ".err.txt"
msg <- err name
expected @=? msg
ExitFailure 1 @=? code
case_hello :: Assertion
case_hello = checkHelpText "hello" Hello.opts ["--help"]
case_modes :: Assertion
case_modes = checkHelpText "commands" Commands.opts ["--help"]
case_cabal_conf :: Assertion
case_cabal_conf = checkHelpText "cabal" Cabal.pinfo ["configure", "--help"]
case_args :: Assertion
case_args = do
let result = run Commands.opts ["hello", "foo", "bar"]
case result of
Left _ ->
assertFailure "unexpected parse error"
Right (Commands.Hello args) ->
["foo", "bar"] @=? args
Right Commands.Goodbye ->
assertFailure "unexpected result: Goodbye"
case_args_opts :: Assertion
case_args_opts = do
let result = run Commands.opts ["hello", "foo", "--bar"]
case result of
Left _ -> return ()
Right (Commands.Hello xs) ->
assertFailure $ "unexpected result: Hello " ++ show xs
Right Commands.Goodbye ->
assertFailure "unexpected result: Goodbye"
case_args_ddash :: Assertion
case_args_ddash = do
let result = run Commands.opts ["hello", "foo", "--", "--bar", "baz"]
case result of
Left _ ->
assertFailure "unexpected parse error"
Right (Commands.Hello args) ->
["foo", "--bar", "baz"] @=? args
Right Commands.Goodbye ->
assertFailure "unexpected result: Goodbye"
case_alts :: Assertion
case_alts = do
let result = run Alternatives.opts ["-b", "-a", "-b", "-a", "-a", "-b"]
case result of
Left _ -> assertFailure "unexpected parse error"
Right xs -> [b, a, b, a, a, b] @=? xs
where a = Alternatives.A
b = Alternatives.B
case_show_default :: Assertion
case_show_default = do
let p = option ( short 'n'
<> help "set count"
<> value (0 :: Int)
<> showDefault)
i = info (p <**> helper) idm
result = run i ["--help"]
case result of
Left (ParserFailure err _) -> do
msg <- err "test"
assertHasLine
" -n ARG set count (default: 0)"
msg
Right r -> assertFailure $ "unexpected result: " ++ show r
case_alt_cont :: Assertion
case_alt_cont = do
let p = Alternatives.a <|> Alternatives.b
i = info p idm
result = run i ["-a", "-b"]
case result of
Left _ -> return ()
Right r -> assertFailure $ "unexpected result: " ++ show r
case_alt_help :: Assertion
case_alt_help = do
let p = p1 <|> p2 <|> p3
p1 = (Just . Left)
<$> strOption ( long "virtual-machine"
<> metavar "VM"
<> help "Virtual machine name" )
p2 = (Just . Right)
<$> strOption ( long "cloud-service"
<> metavar "CS"
<> help "Cloud service name" )
p3 = flag' Nothing ( long "dry-run" )
i = info (p <**> helper) idm
checkHelpText "alt" i ["--help"]
case_nested_commands :: Assertion
case_nested_commands = do
let p3 = strOption (short 'a' <> metavar "A")
p2 = subparser (command "b" (info p3 idm))
p1 = subparser (command "c" (info p2 idm))
i = info (p1 <**> helper) idm
checkHelpText "nested" i ["c", "b"]
case_many_args :: Assertion
case_many_args = do
let p = arguments str idm
i = info p idm
nargs = 20000
result = run i (replicate nargs "foo")
case result of
Left _ -> assertFailure "unexpected parse error"
Right xs -> nargs @=? length xs
case_disambiguate :: Assertion
case_disambiguate = do
let p = flag' (1 :: Int) (long "foo")
<|> flag' 2 (long "bar")
<|> flag' 3 (long "baz")
i = info p idm
result = execParserPure (prefs disambiguate) i ["--f"]
case result of
Left _ -> assertFailure "unexpected parse error"
Right val -> 1 @=? val
case_ambiguous :: Assertion
case_ambiguous = do
let p = flag' (1 :: Int) (long "foo")
<|> flag' 2 (long "bar")
<|> flag' 3 (long "baz")
i = info p idm
result = execParserPure (prefs disambiguate) i ["--ba"]
case result of
Left _ -> return ()
Right val -> assertFailure $ "unexpected result " ++ show val
case_completion :: Assertion
case_completion = do
let p = (,)
<$> strOption (long "foo"<> value "")
<*> strOption (long "bar"<> value "")
i = info p idm
result = run i ["--bash-completion-index", "0"]
case result of
Left (ParserFailure err code) -> do
ExitSuccess @=? code
completions <- lines <$> err "test"
["--foo", "--bar"] @=? completions
Right val ->
assertFailure $ "unexpected result " ++ show val
case_bind_usage :: Assertion
case_bind_usage = do
let p = arguments str (metavar "ARGS...")
i = info (p <**> helper) briefDesc
result = run i ["--help"]
case result of
Left (ParserFailure err _) -> do
text <- head . lines <$> err "test"
"Usage: test [ARGS...]" @=? text
Right val ->
assertFailure $ "unexpected result " ++ show val
case_issue_19 :: Assertion
case_issue_19 = do
let p = option
( short 'x'
<> reader (fmap Just . str)
<> value Nothing )
i = info (p <**> helper) idm
result = run i ["-x", "foo"]
case result of
Left _ -> assertFailure "unexpected parse error"
Right r -> Just "foo" @=? r
case_arguments1_none :: Assertion
case_arguments1_none = do
let p = arguments1 str idm
i = info (p <**> helper) idm
result = run i []
assertLeft result $ \(ParserFailure _ _) -> return ()
case_arguments1_some :: Assertion
case_arguments1_some = do
let p = arguments1 str idm
i = info (p <**> helper) idm
result = run i ["foo", "--", "bar", "baz"]
case result of
Left _ -> assertFailure "unexpected parse error"
Right r -> ["foo", "bar", "baz"] @=? r
case_arguments_switch :: Assertion
case_arguments_switch = do
let p = switch (short 'x')
*> arguments str idm
i = info p idm
result = run i ["--", "-x"]
assertRight result $ \args -> ["-x"] @=? args
case_issue_35 :: Assertion
case_issue_35 = do
let p = flag' True (short 't' <> hidden)
<|> flag' False (short 'f')
i = info p idm
result = run i []
case result of
Left (ParserFailure err _) -> do
text <- head . lines <$> err "test"
"Usage: test -f" @=? text
Right val ->
assertFailure $ "unexpected result " ++ show val
case_backtracking :: Assertion
case_backtracking = do
let p2 = switch (short 'a')
p1 = (,)
<$> subparser (command "c" (info p2 idm))
<*> switch (short 'b')
i = info (p1 <**> helper) idm
result = execParserPure (prefs noBacktrack) i ["c", "-b"]
assertLeft result $ \ _ -> return ()
case_error_context :: Assertion
case_error_context = do
let p = pk <$> option (long "port")
<*> option (long "key")
i = info p idm
result = run i ["--port", "foo", "--key", "291"]
case result of
Left (ParserFailure err _) -> do
msg <- err "test"
let errMsg = head $ lines msg
assertBool "no context in error message (option)"
("port" `isInfixOf` errMsg)
assertBool "no context in error message (value)"
("foo" `isInfixOf` errMsg)
Right val ->
assertFailure $ "unexpected result " ++ show val
where
pk :: Int -> Int -> (Int, Int)
pk = (,)
condr :: MonadPlus m => (Int -> Bool) -> String -> m Int
condr f arg = do
x <- auto arg
guard (f (x :: Int))
return x
case_arg_order_1 :: Assertion
case_arg_order_1 = do
let p = (,)
<$> argument (condr even) idm
<*> argument (condr odd) idm
i = info p idm
result = run i ["3", "6"]
assertLeft result $ \_ -> return ()
case_arg_order_2 :: Assertion
case_arg_order_2 = do
let p = (,,)
<$> argument (condr even) idm
<*> option (reader (condr even) <> short 'a')
<*> option (reader (condr odd) <> short 'b')
i = info p idm
result = run i ["2", "-b", "3", "-a", "6"]
case result of
Left _ -> assertFailure "unexpected parse error"
Right res -> (2, 6, 3) @=? res
case_arg_order_3 :: Assertion
case_arg_order_3 = do
let p = (,)
<$> ( argument (condr even) idm
<|> option (short 'n') )
<*> argument (condr odd) idm
i = info p idm
result = run i ["-n", "3", "5"]
case result of
Left _ ->
assertFailure "unexpected parse error"
Right res -> (3, 5) @=? res
case_issue_47 :: Assertion
case_issue_47 = do
let p = nullOption (long "test" <> reader r <> value 9) :: Parser Int
r _ = readerError "error message"
result = run (info p idm) ["--test", "x"]
assertLeft result $ \(ParserFailure err _) -> do
text <- head . lines <$> err "test"
assertBool "no error message"
("error message" `isInfixOf` text)
case_issue_50 :: Assertion
case_issue_50 = do
let p = argument str (metavar "INPUT")
<* switch (long "version")
result = run (info p idm) ["--version", "test"]
assertRight result $ \r -> "test" @=? r
case_intersperse_1 :: Assertion
case_intersperse_1 = do
let p = arguments str (metavar "ARGS")
<* switch (short 'x')
result = execParserPure (prefs noIntersperse)
(info p idm)
["a", "-x", "b"]
assertRight result $ \args -> ["a", "-x", "b"] @=? args
main :: IO ()
main = $(defaultMainGenerator)