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64 lines
2.5 KiB
Haskell
64 lines
2.5 KiB
Haskell
module SourceSpec where
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import Data.Char (chr)
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import Data.Range
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import Data.Semigroup
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import Data.Source
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import Data.Span
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import qualified Data.Text as Text
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import Test.Hspec
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import Test.Hspec.LeanCheck
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import Test.LeanCheck
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spec :: Spec
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spec = parallel $ do
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describe "sourceLineRanges" $ do
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prop "produces 1 more range than there are newlines" $
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\ source -> length (sourceLineRanges source) `shouldBe` succ (Text.count "\n" (toText source))
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prop "produces exhaustive ranges" $
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\ source -> foldMap (`slice` source) (sourceLineRanges source) `shouldBe` source
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describe "spanToRange" $ do
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prop "computes single-line ranges" . forAll (unListableByteString `mapT` tiers) $
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\ s -> let source = fromBytes s
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spans = zipWith (\ i Range {..} -> Span (Pos i 1) (Pos i (succ (end - start)))) [1..] ranges
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ranges = sourceLineRanges source in
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spanToRange source <$> spans `shouldBe` ranges
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prop "computes multi-line ranges" $
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\ source ->
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spanToRange source (totalSpan source) `shouldBe` totalRange source
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prop "computes sub-line ranges" $
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\ s -> let source = "*" <> s <> "*" in
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spanToRange source (insetSpan (totalSpan source)) `shouldBe` insetRange (totalRange source)
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prop "inverse of rangeToSpan" $
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\ a b -> let s = a <> "\n" <> b in spanToRange s (totalSpan s) `shouldBe` totalRange s
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describe "rangeToSpan" $ do
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prop "inverse of spanToRange" $
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\ a b -> let s = a <> "\n" <> b in rangeToSpan s (totalRange s) `shouldBe` totalSpan s
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describe "totalSpan" $ do
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prop "covers single lines" $
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\ n -> totalSpan (fromText (Text.replicate n "*")) `shouldBe` Span (Pos 1 1) (Pos 1 (max 1 (succ n)))
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prop "covers multiple lines" $
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\ n -> totalSpan (fromText (Text.intersperse '\n' (Text.replicate n "*"))) `shouldBe` Span (Pos 1 1) (Pos (max 1 n) (if n > 0 then 2 else 1))
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prop "preserves characters" . forAll (toTiers (list +| [chr 0xa0..chr 0x24f])) $
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\ c -> Text.unpack (toText (fromText (Text.singleton c))) `shouldBe` [c]
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prop "preserves strings" $
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\ s -> fromText (toText s) `shouldBe` s
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insetSpan :: Span -> Span
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insetSpan sourceSpan = sourceSpan { spanStart = (spanStart sourceSpan) { posColumn = succ (posColumn (spanStart sourceSpan)) }
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, spanEnd = (spanEnd sourceSpan) { posColumn = pred (posColumn (spanEnd sourceSpan)) } }
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insetRange :: Range -> Range
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insetRange Range {..} = Range (succ start) (pred end)
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