167 lines
6.5 KiB
Haskell
167 lines
6.5 KiB
Haskell
{-# OPTIONS_GHC -fno-warn-orphans #-}
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-- provides Arbitrary instance for Pandoc types
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module Tests.Arbitrary ()
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where
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import Test.QuickCheck.Gen
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import Test.QuickCheck.Arbitrary
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import Control.Monad (liftM, liftM2)
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import Text.Pandoc
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import Text.Pandoc.Shared
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realString :: Gen String
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realString = elements wordlist
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wordlist :: [String]
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wordlist = ["foo","Bar","baz","\\","/",":","\"","'","féé"]
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instance Arbitrary Inline where
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arbitrary = resize 3 $ arbInline 3
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-- restrict to 3 levels of nesting max; otherwise we get
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-- bogged down in indefinitely large structures
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arbInline :: Int -> Gen Inline
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arbInline n = frequency $ [ (60, liftM Str realString)
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, (60, return Space)
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, (10, liftM Code realString)
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, (5, return EmDash)
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, (5, return EnDash)
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, (5, return Apostrophe)
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, (5, return Ellipses)
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] ++ [ x | x <- nesters, n > 1]
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where nesters = [ (10, liftM Emph $ listOf $ arbInline (n-1))
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, (10, liftM Strong $ listOf $ arbInline (n-1))
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, (10, liftM Strikeout $ listOf $ arbInline (n-1))
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, (10, liftM Superscript $ listOf $ arbInline (n-1))
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, (10, liftM Subscript $ listOf $ arbInline (n-1))
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, (10, liftM SmallCaps $ listOf $ arbInline (n-1))
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, (10, do x1 <- arbitrary
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x2 <- listOf $ arbInline (n-1)
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return $ Quoted x1 x2)
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, (10, do x1 <- arbitrary
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x2 <- realString
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return $ Math x1 x2)
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, (10, do x1 <- listOf $ arbInline (n-1)
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x3 <- realString
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x2 <- realString
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return $ Link x1 (x2,x3))
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, (10, do x1 <- listOf $ arbInline (n-1)
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x3 <- realString
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x2 <- realString
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return $ Image x1 (x2,x3))
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, (2, liftM Note $ resize 3 $ listOf1 arbitrary)
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]
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instance Arbitrary Block where
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arbitrary = resize 3 $ arbBlock 3
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arbBlock :: Int -> Gen Block
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arbBlock n = frequency $ [ (10, liftM Plain arbitrary)
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, (15, liftM Para arbitrary)
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, (5, liftM2 CodeBlock arbitrary realString)
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, (2, liftM RawHtml realString)
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, (5, do x1 <- choose (1 :: Int, 6)
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x2 <- arbitrary
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return (Header x1 x2))
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, (2, return HorizontalRule)
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] ++ [x | x <- nesters, n > 0]
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where nesters = [ (5, liftM BlockQuote $ listOf $ arbBlock (n-1))
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, (5, liftM2 OrderedList arbitrary
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$ (listOf $ listOf $ arbBlock (n-1)))
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, (5, liftM BulletList $ (listOf $ listOf $ arbBlock (n-1)))
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, (5, do x1 <- listOf $ listOf $ listOf $ arbBlock (n-1)
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x2 <- arbitrary
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return (DefinitionList $ zip x2 x1))
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, (2, do rs <- choose (1 :: Int, 4)
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cs <- choose (1 :: Int, 4)
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x1 <- arbitrary
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x2 <- vector cs
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x3 <- vectorOf cs $ elements [0, 0.25]
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x4 <- vectorOf cs $ listOf $ arbBlock (n-1)
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x5 <- vectorOf rs $ vectorOf cs
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$ listOf $ arbBlock (n-1)
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return (Table x1 x2 x3 x4 x5))
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]
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instance Arbitrary Pandoc where
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arbitrary
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= do x1 <- arbitrary
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x2 <- arbitrary
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return $ normalize (Pandoc x1 x2)
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{-
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instance Arbitrary CitationMode where
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arbitrary
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= do x <- choose (0 :: Int, 2)
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case x of
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0 -> return AuthorInText
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1 -> return SuppressAuthor
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2 -> return NormalCitation
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_ -> error "FATAL ERROR: Arbitrary instance, logic bug"
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instance Arbitrary Citation where
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arbitrary
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= do x1 <- liftM (filter (`notElem` ",;]@ \t\n")) arbitrary
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x2 <- arbitrary
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x3 <- arbitrary
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x4 <- arbitrary
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x5 <- arbitrary
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x6 <- arbitrary
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return (Citation x1 x2 x3 x4 x5 x6)
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-}
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instance Arbitrary MathType where
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arbitrary
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= do x <- choose (0 :: Int, 1)
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case x of
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0 -> return DisplayMath
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1 -> return InlineMath
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_ -> error "FATAL ERROR: Arbitrary instance, logic bug"
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instance Arbitrary QuoteType where
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arbitrary
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= do x <- choose (0 :: Int, 1)
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case x of
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0 -> return SingleQuote
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1 -> return DoubleQuote
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_ -> error "FATAL ERROR: Arbitrary instance, logic bug"
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instance Arbitrary Meta where
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arbitrary
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= do x1 <- arbitrary
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x2 <- liftM (filter (not . null)) arbitrary
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x3 <- arbitrary
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return (Meta x1 x2 x3)
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instance Arbitrary Alignment where
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arbitrary
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= do x <- choose (0 :: Int, 3)
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case x of
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0 -> return AlignLeft
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1 -> return AlignRight
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2 -> return AlignCenter
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3 -> return AlignDefault
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_ -> error "FATAL ERROR: Arbitrary instance, logic bug"
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instance Arbitrary ListNumberStyle where
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arbitrary
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= do x <- choose (0 :: Int, 6)
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case x of
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0 -> return DefaultStyle
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1 -> return Example
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2 -> return Decimal
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3 -> return LowerRoman
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4 -> return UpperRoman
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5 -> return LowerAlpha
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6 -> return UpperAlpha
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_ -> error "FATAL ERROR: Arbitrary instance, logic bug"
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instance Arbitrary ListNumberDelim where
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arbitrary
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= do x <- choose (0 :: Int, 3)
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case x of
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0 -> return DefaultDelim
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1 -> return Period
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2 -> return OneParen
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3 -> return TwoParens
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_ -> error "FATAL ERROR: Arbitrary instance, logic bug"
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