git.iko.soy/typeable/pandoc
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typeable/pandoc/src/Tests/Arbitrary.hs
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1{-# OPTIONS_GHC -fno-warn-orphans #-}
2{-# LANGUAGE TypeSynonymInstances, FlexibleInstances, ScopedTypeVariables #-}
3-- provides Arbitrary instance for Pandoc types
4module Tests.Arbitrary ()
5where
6import Test.QuickCheck.Gen
7import Test.QuickCheck.Arbitrary
8import Control.Monad (liftM, liftM2)
9import Text.Pandoc.Definition
10import Text.Pandoc.Shared (normalize, escapeURI)
11import Text.Pandoc.Builder
13realString :: Gen String
14realString = resize 8 $ listOf $ frequency [ (9, elements [' '..'\127'])
15 , (1, elements ['\128'..'\9999']) ]
17arbAttr :: Gen Attr
18arbAttr = do
19 id' <- elements ["","loc"]
20 classes <- elements [[],["haskell"],["c","numberLines"]]
21 keyvals <- elements [[],[("start","22")],[("a","11"),("b_2","a b c")]]
22 return (id',classes,keyvals)
24instance Arbitrary Inlines where
25 arbitrary = liftM (fromList :: [Inline] -> Inlines) arbitrary
27instance Arbitrary Blocks where
28 arbitrary = liftM (fromList :: [Block] -> Blocks) arbitrary
30instance Arbitrary Inline where
31 arbitrary = resize 3 $ arbInline 2
33arbInlines :: Int -> Gen [Inline]
34arbInlines n = listOf1 (arbInline n) `suchThat` (not . startsWithSpace)
35 where startsWithSpace (Space:_) = True
36 startsWithSpace _ = False
38-- restrict to 3 levels of nesting max; otherwise we get
39-- bogged down in indefinitely large structures
40arbInline :: Int -> Gen Inline
41arbInline n = frequency $ [ (60, liftM Str realString)
42 , (60, return Space)
43 , (10, liftM2 Code arbAttr realString)
44 , (5, return EmDash)
45 , (5, return EnDash)
46 , (5, return Apostrophe)
47 , (5, return Ellipses)
48 , (5, elements [ RawInline "html" "<a id=\"eek\">"
49 , RawInline "latex" "\\my{command}" ])
50 ] ++ [ x | x <- nesters, n > 1]
51 where nesters = [ (10, liftM Emph $ arbInlines (n-1))
52 , (10, liftM Strong $ arbInlines (n-1))
53 , (10, liftM Strikeout $ arbInlines (n-1))
54 , (10, liftM Superscript $ arbInlines (n-1))
55 , (10, liftM Subscript $ arbInlines (n-1))
56-- , (10, liftM SmallCaps $ arbInlines (n-1))
57 , (10, do x1 <- arbitrary
58 x2 <- arbInlines (n-1)
59 return $ Quoted x1 x2)
60 , (10, do x1 <- arbitrary
61 x2 <- realString
62 return $ Math x1 x2)
63 , (10, do x1 <- arbInlines (n-1)
64 x3 <- realString
65 x2 <- liftM escapeURI realString
66 return $ Link x1 (x2,x3))
67 , (10, do x1 <- arbInlines (n-1)
68 x3 <- realString
69 x2 <- liftM escapeURI realString
70 return $ Image x1 (x2,x3))
71 , (2, liftM Note $ resize 3 $ listOf1 $ arbBlock (n-1))
72 ]
74instance Arbitrary Block where
75 arbitrary = resize 3 $ arbBlock 2
77arbBlock :: Int -> Gen Block
78arbBlock n = frequency $ [ (10, liftM Plain $ arbInlines (n-1))
79 , (15, liftM Para $ arbInlines (n-1))
80 , (5, liftM2 CodeBlock arbAttr realString)
81 , (2, elements [ RawBlock "html"
82 "<div>\n*&amp;*\n</div>"
83 , RawBlock "latex"
84 "\\begin[opt]{env}\nhi\n{\\end{env}"
85 ])
86 , (5, do x1 <- choose (1 :: Int, 6)
87 x2 <- arbInlines (n-1)
88 return (Header x1 x2))
89 , (2, return HorizontalRule)
90 ] ++ [x | x <- nesters, n > 0]
91 where nesters = [ (5, liftM BlockQuote $ listOf1 $ arbBlock (n-1))
92 , (5, do x2 <- arbitrary
93 x3 <- arbitrary
94 x1 <- arbitrary `suchThat` (> 0)
95 x4 <- listOf1 $ listOf1 $ arbBlock (n-1)
96 return $ OrderedList (x1,x2,x3) x4 )
97 , (5, liftM BulletList $ (listOf1 $ listOf1 $ arbBlock (n-1)))
98 , (5, do items <- listOf1 $ do
99 x1 <- listOf1 $ listOf1 $ arbBlock (n-1)
100 x2 <- arbInlines (n-1)
101 return (x2,x1)
102 return $ DefinitionList items)
103 , (2, do rs <- choose (1 :: Int, 4)
104 cs <- choose (1 :: Int, 4)
105 x1 <- arbInlines (n-1)
106 x2 <- vector cs
107 x3 <- vectorOf cs $ elements [0, 0.25]
108 x4 <- vectorOf cs $ listOf $ arbBlock (n-1)
109 x5 <- vectorOf rs $ vectorOf cs
110 $ listOf $ arbBlock (n-1)
111 return (Table x1 x2 x3 x4 x5))
112 ]
114instance Arbitrary Pandoc where
115 arbitrary = resize 8 $ liftM normalize
116 $ liftM2 Pandoc arbitrary arbitrary
118{-
119instance Arbitrary CitationMode where
120 arbitrary
121 = do x <- choose (0 :: Int, 2)
122 case x of
123 0 -> return AuthorInText
124 1 -> return SuppressAuthor
125 2 -> return NormalCitation
126 _ -> error "FATAL ERROR: Arbitrary instance, logic bug"
128instance Arbitrary Citation where
129 arbitrary
130 = do x1 <- liftM (filter (`notElem` ",;]@ \t\n")) arbitrary
131 x2 <- arbitrary
132 x3 <- arbitrary
133 x4 <- arbitrary
134 x5 <- arbitrary
135 x6 <- arbitrary
136 return (Citation x1 x2 x3 x4 x5 x6)
137-}
139instance Arbitrary MathType where
140 arbitrary
141 = do x <- choose (0 :: Int, 1)
142 case x of
143 0 -> return DisplayMath
144 1 -> return InlineMath
145 _ -> error "FATAL ERROR: Arbitrary instance, logic bug"
147instance Arbitrary QuoteType where
148 arbitrary
149 = do x <- choose (0 :: Int, 1)
150 case x of
151 0 -> return SingleQuote
152 1 -> return DoubleQuote
153 _ -> error "FATAL ERROR: Arbitrary instance, logic bug"
155instance Arbitrary Meta where
156 arbitrary
157 = do x1 <- arbitrary
158 x2 <- liftM (filter (not . null)) arbitrary
159 x3 <- arbitrary
160 return (Meta x1 x2 x3)
162instance Arbitrary Alignment where
163 arbitrary
164 = do x <- choose (0 :: Int, 3)
165 case x of
166 0 -> return AlignLeft
167 1 -> return AlignRight
168 2 -> return AlignCenter
169 3 -> return AlignDefault
170 _ -> error "FATAL ERROR: Arbitrary instance, logic bug"
172instance Arbitrary ListNumberStyle where
173 arbitrary
174 = do x <- choose (0 :: Int, 6)
175 case x of
176 0 -> return DefaultStyle
177 1 -> return Example
178 2 -> return Decimal
179 3 -> return LowerRoman
180 4 -> return UpperRoman
181 5 -> return LowerAlpha
182 6 -> return UpperAlpha
183 _ -> error "FATAL ERROR: Arbitrary instance, logic bug"
185instance Arbitrary ListNumberDelim where
186 arbitrary
187 = do x <- choose (0 :: Int, 3)
188 case x of
189 0 -> return DefaultDelim
190 1 -> return Period
191 2 -> return OneParen
192 3 -> return TwoParens
193 _ -> error "FATAL ERROR: Arbitrary instance, logic bug"