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{-# OPTIONS_GHC -fno-warn-deprecations #-}
module TagSoup.Test(test) where
import Text.HTML.TagSoup
import Text.HTML.TagSoup.Entity
import Text.HTML.TagSoup.Match
import Control.Monad
import Data.List
import Test.QuickCheck(Arbitrary(..), Testable(..), quickCheckWithResult, stdArgs,
Args(..), listOf, elements, Result(..))
-- * The Test Monad
type Test a = IO a
pass :: Test ()
pass = return ()
runTest :: Test () -> IO ()
runTest x = x >> putStrLn "All tests passed"
(===) :: (Show a, Eq a) => a -> a -> IO ()
a === b = if a == b then pass else fail $ "Does not equal: " ++ show a ++ " =/= " ++ show b
check :: Testable prop => prop -> IO ()
check prop = do
res <- quickCheckWithResult stdArgs{maxSuccess=1000} prop
case res of
Success{} -> pass
_ -> fail "Property failed"
newtype HTML = HTML String deriving Show
instance Arbitrary HTML where
arbitrary = fmap (HTML . concat) $ listOf $ elements frags
where frags = map (:[]) " \n!-</>#&;xy01[]?'\"" ++ ["CDATA","amp","gt","lt"]
shrink (HTML x) = map HTML $ zipWith (++) (inits x) (tail $ tails x)
-- * The Main section
test :: IO ()
test = runTest $ do
warnTests
parseTests
optionsTests
renderTests
combiTests
positionTests
entityTests
lazyTags == lazyTags `seq` pass
matchCombinators
{- |
This routine tests the laziness of the TagSoup parser.
For each critical part of the parser we provide a test input
with a token of infinite size.
Then the output must be infinite too.
If the laziness is broken, then the output will stop early.
We collect the thousandth character of the output of each test case.
If computation of the list stops somewhere,
you have found a laziness stopper.
-}
lazyTags :: [Char]
lazyTags = map ((!!1000) . show . parseTags)
[cycle "Rhabarber"
,repeat '&'
,"<"++cycle "html"
,"<html "++cycle "na!me=value "
,"<html name="++cycle "value"
,"<html name=\""++cycle "value"
,"<html name="++cycle "val!ue"
,"<html "++cycle "name"
,"</"++cycle "html"
,"<!-- "++cycle "comment"
,"<!"++cycle "doctype"
,"<!DOCTYPE"++cycle " description"
,cycle "1<2 "
,"&" ++ cycle "t"
,"<html name="++cycle "val&ue"
,"<html name="++cycle "va&l!ue"
,cycle "& test"
-- i don't see how this can work unless the junk gets into the AST?
-- ,("</html "++cycle "junk") :
]
matchCombinators :: Test ()
matchCombinators = do
tagText (const True) (TagText "test") === True
tagText ("test"==) (TagText "test") === True
tagText ("soup"/=) (TagText "test") === True
tagOpenNameLit "table" (TagOpen "table" [("id", "name")]) === True
tagOpenLit "table" (anyAttrLit ("id", "name")) (TagOpen "table" [("id", "name")]) === True
tagOpenLit "table" (anyAttrNameLit "id") (TagOpen "table" [("id", "name")]) === True
tagOpenLit "table" (anyAttrLit ("id", "name")) (TagOpen "table" [("id", "other name")]) === False
parseTests :: Test ()
parseTests = do
parseTags "<!DOCTYPE TEST>" === [TagOpen "!DOCTYPE" [("TEST","")]]
parseTags "<test \"foo bar\">" === [TagOpen "test" [("\"foo",""),("bar\"","")]]
parseTags "<test baz \"foo\">" === [TagOpen "test" [("baz",""),("\"foo\"","")]]
parseTags "<test 'foo bar'>" === [TagOpen "test" [("'foo",""),("bar'","")]]
parseTags "<test bar=''' />" === [TagOpen "test" [("bar",""),("'","")], TagClose "test"]
parseTags "<test2 a b>" === [TagOpen "test2" [("a",""),("b","")]]
parseTags "<test2 ''>" === [TagOpen "test2" [("''","")]]
parseTags "</test foo>" === [TagClose "test"]
parseTags "<test/>" === [TagOpen "test" [], TagClose "test"]
parseTags "<test1 a = b>" === [TagOpen "test1" [("a","b")]]
parseTags "hello & world" === [TagText "hello & world"]
parseTags "hello @ world" === [TagText "hello @ world"]
parseTags "hello @ world" === [TagText "hello @ world"]
parseTags "hello @ world" === [TagText "hello @ world"]
parseTags "hello &haskell; world" === [TagText "hello &haskell; world"]
parseTags "hello \n\t world" === [TagText "hello \n\t world"]
parseTags "<a href=http://www.google.com>" === [TagOpen "a" [("href","http://www.google.com")]]
parseTags "<foo bar=\"bar6baz\">" === [TagOpen "foo" [("bar","bar6baz")]]
parseTags "<foo bar=\"bar&baz\">" === [TagOpen "foo" [("bar","bar&baz")]]
parseTags "hey &how are you" === [TagText "hey &how are you"]
parseTags "hey &how; are you" === [TagText "hey &how; are you"]
parseTags "hey & are you" === [TagText "hey & are you"]
parseTags "hey & are you" === [TagText "hey & are you"]
-- real cases reported by users
parseTags "↖x≧̸" === [TagText ['\x2196','x','\x2267','\x0338']]
parseTags "test � test" === [TagText "test ? test"]
parseTags "<a href=\"series.php?view=single&ID=72710\">" === [TagOpen "a" [("href","series.php?view=single&ID=72710")]]
parseTags "<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.01//EN\" \"http://www.w3.org/TR/html4/strict.dtd\">" ===
[TagOpen "!DOCTYPE" [("HTML",""),("PUBLIC",""),("","-//W3C//DTD HTML 4.01//EN"),("","http://www.w3.org/TR/html4/strict.dtd")]]
parseTags "<script src=\"http://edge.jobthread.com/feeds/jobroll/?s_user_id=100540&subtype=slashdot\">" ===
[TagOpen "script" [("src","http://edge.jobthread.com/feeds/jobroll/?s_user_id=100540&subtype=slashdot")]]
parseTags "<a title='foo'bar' href=correct>text" === [TagOpen "a" [("title","foo"),("bar'",""),("href", "correct")],TagText "text"]
parseTags "<test><![CDATA[Anything goes, <em>even hidden markup</em> & entities]]> but this is outside</test>" ===
[TagOpen "test" [],TagText "Anything goes, <em>even hidden markup</em> & entities but this is outside",TagClose "test"]
parseTags "<a \r\n href=\"url\">" === [TagOpen "a" [("href","url")]]
parseTags "<a href='random.php'><img src='strips/130307.jpg' alt='nukular bish'' title='' /></a>" ===
[TagOpen "a" [("href","random.php")],TagOpen "img" [("src","strips/130307.jpg"),("alt","nukular bish"),("'",""),("title","")],TagClose "img",TagClose "a"]
parseTags "<p>some text</p\n<img alt='< &yyy; >' src=\"abc.gif\">" ===
[TagOpen "p" [],TagText "some text",TagClose "p"]
parseTags "<script> if (x<bomb) </script>" === [TagOpen "script" [], TagText " if (x<bomb) ", TagClose "script"]
parseTags "<script> if (x<bomb) " === [TagOpen "script" [], TagText " if (x<bomb) "]
parseTags "<SCRIPT language=foo> if (x<bomb) </SCRIPT>" === [TagOpen "SCRIPT" [("language","foo")], TagText " if (x<bomb) ", TagClose "SCRIPT"]
parseTags "<script /><test>" === [TagOpen "script" [], TagClose "script", TagOpen "test" []]
-- some escapes require trailing semicolons, see #28 and #27.
parseTags "one ∣ two" === [TagText "one \8739 two"]
parseTags "one &mid two" === [TagText "one &mid two"]
parseTags "one µ two" === [TagText "one \181 two"]
parseTags "one µ two" === [TagText "one \181 two"]
optionsTests :: Test ()
optionsTests = check $ \(HTML x) -> all (f x) $ replicateM 3 [False,True]
where
f str [pos,warn,merge] =
bool "merge" (not merge || adjacentTagText tags) &&
bool "warn" (warn || all (not . isTagWarning) tags) &&
bool "pos" (if pos then alternatePos tags else all (not . isTagPosition) tags)
where tags = parseTagsOptions parseOptions{optTagPosition=pos,optTagWarning=warn,optTagTextMerge=merge} str
bool x b = b || error ("optionsTests failed with " ++ x ++ " on " ++ show (pos,warn,merge,str,tags))
-- optTagTextMerge implies no adjacent TagText cells
-- and none separated by only warnings or positions
adjacentTagText = g True -- can the next be a tag text
where g i (x:xs) | isTagText x = i && g False xs
| isTagPosition x || isTagWarning x = g i xs
| otherwise = g True xs
g i [] = True
-- optTagPosition implies every element must be followed
-- by a position node, no two position nodes must be adjacent
-- and all positions must be increasing
alternatePos (TagPosition l1 c1 : x : TagPosition l2 c2 : xs)
| (l1,c1) <= (l2,c2) && not (isTagPosition x) = alternatePos $ TagPosition l2 c2 : xs
alternatePos [TagPosition l1 c1, x] | not $ isTagPosition x = True
alternatePos [] = True
alternatePos _ = False
renderTests :: Test ()
renderTests = do
let rp = renderTags . parseTags
rp "<test>" === "<test>"
rp "<br></br>" === "<br />"
rp "<script></script>" === "<script></script>"
rp "hello & world" === "hello & world"
rp "<a href=test>" === "<a href=\"test\">"
rp "<a href>" === "<a href>"
rp "<a href?>" === "<a href?>"
rp "<?xml foo?>" === "<?xml foo ?>"
rp "<?xml foo?>" === "<?xml foo ?>"
rp "<!-- neil -->" === "<!-- neil -->"
rp "<a test=\"a'b\">" === "<a test=\"a'b\">"
escapeHTML "this is a &\" <test> '" === "this is a &" <test> '"
check $ \(HTML x) -> let y = rp x in rp y == (y :: String)
entityTests :: Test ()
entityTests = do
lookupNumericEntity "65" === Just "A"
lookupNumericEntity "x41" === Just "A"
lookupNumericEntity "x4E" === Just "N"
lookupNumericEntity "x4e" === Just "N"
lookupNumericEntity "X4e" === Just "N"
lookupNumericEntity "Haskell" === Nothing
lookupNumericEntity "" === Nothing
lookupNumericEntity "89439085908539082" === Nothing
lookupNamedEntity "amp" === Just "&"
lookupNamedEntity "haskell" === Nothing
escapeXML "hello world" === "hello world"
escapeXML "hello & world" === "hello & world"
combiTests :: Test ()
combiTests = do
(TagText "test" ~== TagText "" ) === True
(TagText "test" ~== TagText "test") === True
(TagText "test" ~== TagText "soup") === False
(TagText "test" ~== "test") === True
(TagOpen "test" [] ~== "<test>") === True
(TagOpen "test" [] ~== "<soup>") === False
(TagOpen "test" [] ~/= "<soup>") === True
(TagComment "foo" ~== "<!--foo-->") === True
(TagComment "bar" ~== "<!--bar-->") === True
positionTests :: Test ()
positionTests = do
let p = parseTagsOptions parseOptions{optTagPosition=True,optTagWarning=False}
p "<a>&</a>" === [TagPosition 1 1,TagOpen "a" [],TagPosition 1 4,TagText "&",TagPosition 1 5,TagClose "a"]
p "<a>&#z" === [TagPosition 1 1,TagOpen "a" [],TagPosition 1 4,TagText "&#z"]
p "<a>&xz" === [TagPosition 1 1,TagOpen "a" [],TagPosition 1 4,TagText "&xz"]
p "<a>&" === [TagPosition 1 1,TagOpen "a" [],TagPosition 1 4,TagText "&"]
p "<a>&1" === [TagPosition 1 1,TagOpen "a" [],TagPosition 1 4,TagText "&1"]
p "<a>&" === [TagPosition 1 1,TagOpen "a" [],TagPosition 1 4,TagText "&"]
p "<div><!--foo-->bar</div>" === [TagPosition 1 1,TagOpen "div" [],TagPosition 1 6,TagComment "foo",TagPosition 1 16,TagText "bar",TagPosition 1 19,TagClose "div"]
p "<div><?foo</div>" === [TagPosition 1 1,TagOpen "div" [],TagPosition 1 6,TagOpen "?foo<" [("div","")]]
p "<div><?</div>" === [TagPosition 1 1,TagOpen "div" [],TagPosition 1 6,TagText "<?",TagPosition 1 8,TagClose "div"]
p "<div><!</div>" === [TagPosition 1 1,TagOpen "div" [],TagPosition 1 6,TagComment "</div"]
p "<![CDATA[x]]>" === [TagPosition 1 10,TagText "x"]
p "<!html>" === [TagPosition 1 1,TagOpen "!html" []]
warnTests :: Test ()
warnTests = do
let p = parseTagsOptions parseOptions{optTagPosition=True,optTagWarning=True}
wt x = [(msg,c) | TagWarning msg:TagPosition _ c:_ <- tails $ p x]
wt "neil &foo bar" === [("Unknown entity: foo",6)]
|
