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220 lines
11 KiB
Haskell
220 lines
11 KiB
Haskell
module Main where
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import Diff
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import Patch
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import Range
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import Split
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import Syntax
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import Term
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import Control.Comonad.Cofree
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import Control.Monad.Free hiding (unfold)
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import qualified Data.List as List
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import qualified Data.Map as Map
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import qualified Data.Set as Set
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import Data.Tuple
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import GHC.Generics
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import Test.Hspec
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import Test.Hspec.QuickCheck
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import Test.QuickCheck hiding (Fixed)
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newtype ArbitraryTerm a annotation = ArbitraryTerm (annotation, (Syntax a (ArbitraryTerm a annotation)))
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deriving (Show, Eq, Generic)
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unTerm :: ArbitraryTerm a annotation -> Term a annotation
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unTerm arbitraryTerm = unfold unpack arbitraryTerm
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where unpack (ArbitraryTerm (annotation, syntax)) = (annotation, syntax)
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instance (Eq a, Eq f, Arbitrary a, Arbitrary f) => Arbitrary (Syntax a f) where
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shrink syntax = filter (/= syntax) $ shrinkSyntax syntax
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where shrinkSyntax (Leaf a) = Leaf <$> shrink a
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shrinkSyntax (Indexed i) = Indexed <$> (List.subsequences i >>= shrink)
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shrinkSyntax (Fixed f) = Fixed <$> (List.subsequences f >>= shrink)
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shrinkSyntax (Keyed k) = Keyed . Map.fromList <$> (List.subsequences (Map.toList k) >>= shrink)
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instance (Eq a, Eq annotation, Arbitrary a, Arbitrary annotation) => Arbitrary (ArbitraryTerm a annotation) where
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arbitrary = sized boundedTerm
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where boundedTerm n = ArbitraryTerm <$> ((,) <$> arbitrary <*> boundedSyntax n)
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boundedSyntax 0 = liftM Leaf arbitrary
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boundedSyntax n = frequency
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[ (1, liftM Leaf arbitrary),
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(4, liftM Indexed . listOf . boundedTerm $ n - 1),
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(4, liftM Fixed . listOf . boundedTerm $ n - 1) ]
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shrink term@(ArbitraryTerm (annotation, syntax)) = (++) (subterms term) $ filter (/= term) $
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ArbitraryTerm <$> ((,) <$> shrink annotation <*> case syntax of
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Leaf a -> Leaf <$> shrink a
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Indexed i -> Indexed <$> (List.subsequences i >>= recursivelyShrink)
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Fixed f -> Fixed <$> (List.subsequences f >>= recursivelyShrink)
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Keyed k -> Keyed . Map.fromList <$> (List.subsequences (Map.toList k) >>= recursivelyShrink))
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arbitraryBounded :: (Arbitrary a, Arbitrary annotation) => Int -> Gen (ArbitraryTerm a annotation)
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arbitraryBounded k = ArbitraryTerm <$> ((,) <$> arbitrary <*> oneof [
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Leaf <$> arbitrary,
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Indexed <$> vectorOfAtMost k (arbitraryBounded $ k - 1),
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Syntax.Fixed <$> vectorOfAtMost k (arbitraryBounded $ k - 1),
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Keyed . Map.fromList <$> (pairWithKey =<< vectorOfAtMost k (arbitraryBounded $ k - 1))])
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where vectorOfAtMost k gen = choose (0, k) >>= \n -> vectorOf n gen
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pairWithKey :: [ArbitraryTerm a annotation] -> Gen [(String, ArbitraryTerm a annotation)]
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pairWithKey x = sequence (generatorOfThings <$> x)
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generatorOfThings :: ArbitraryTerm a annotation -> Gen (String, ArbitraryTerm a annotation)
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generatorOfThings x = (swap . (,) x) <$> arbitrary
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instance Arbitrary HTML where
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arbitrary = oneof [
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Text <$> arbitrary,
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Span <$> arbitrary <*> arbitrary,
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const Break <$> (arbitrary :: Gen ()) ]
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instance Arbitrary Line where
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arbitrary = oneof [
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Line <$> arbitrary,
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const EmptyLine <$> (arbitrary :: Gen ()) ]
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instance Arbitrary Row where
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arbitrary = oneof [
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Row <$> arbitrary <*> arbitrary ]
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main :: IO ()
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main = hspec $ do
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describe "Term" $ do
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prop "equality is reflexive" $
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\ a -> a == (a :: ArbitraryTerm String ())
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describe "annotatedToRows" $ do
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it "outputs one row for single-line unchanged leaves" $
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annotatedToRows (unchanged "a" "leaf" (Leaf "")) "a" "a" `shouldBe` ([ Row (Line [ span "a" ]) (Line [ span "a" ]) ], (Range 0 1, Range 0 1))
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it "outputs one row for single-line empty unchanged indexed nodes" $
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annotatedToRows (unchanged "[]" "branch" (Indexed [])) "[]" "[]" `shouldBe` ([ Row (Line [ Ul (Just "category-branch") [ Text "[]" ] ]) (Line [ Ul (Just "category-branch") [ Text "[]" ] ]) ], (Range 0 2, Range 0 2))
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it "outputs one row for single-line non-empty unchanged indexed nodes" $
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annotatedToRows (unchanged "[ a, b ]" "branch" (Indexed [
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Free . offsetAnnotated 2 2 $ unchanged "a" "leaf" (Leaf ""),
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Free . offsetAnnotated 5 5 $ unchanged "b" "leaf" (Leaf "")
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])) "[ a, b ]" "[ a, b ]" `shouldBe` ([ Row (Line [ Ul (Just "category-branch") [ Text "[ ", span "a", Text ", ", span "b", Text " ]" ] ]) (Line [ Ul (Just "category-branch") [ Text "[ ", span "a", Text ", ", span "b", Text " ]" ] ]) ], (Range 0 8, Range 0 8))
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it "outputs one row for single-line non-empty formatted indexed nodes" $
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annotatedToRows (formatted "[ a, b ]" "[ a, b ]" "branch" (Indexed [
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Free . offsetAnnotated 2 2 $ unchanged "a" "leaf" (Leaf ""),
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Free . offsetAnnotated 5 6 $ unchanged "b" "leaf" (Leaf "")
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])) "[ a, b ]" "[ a, b ]" `shouldBe` ([ Row (Line [ Ul (Just "category-branch") [ Text "[ ", span "a", Text ", ", span "b", Text " ]" ] ]) (Line [ Ul (Just "category-branch") [ Text "[ ", span "a", Text ", ", span "b", Text " ]" ] ]) ], (Range 0 8, Range 0 9))
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it "outputs two rows for two-line non-empty unchanged indexed nodes" $
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annotatedToRows (unchanged "[ a,\nb ]" "branch" (Indexed [
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Free . offsetAnnotated 2 2 $ unchanged "a" "leaf" (Leaf ""),
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Free . offsetAnnotated 5 5 $ unchanged "b" "leaf" (Leaf "")
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])) "[ a,\nb ]" "[ a,\nb ]" `shouldBe`
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([
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Row (Line [ Ul (Just "category-branch") [ Text "[ ", span "a", Text ",", Break ] ])
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(Line [ Ul (Just "category-branch") [ Text "[ ", span "a", Text ",", Break] ]),
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Row (Line [ Ul (Just "category-branch") [ span "b", Text " ]" ] ])
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(Line [ Ul (Just "category-branch") [ span "b", Text " ]" ] ])
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], (Range 0 8, Range 0 8))
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it "outputs two rows for two-line non-empty formatted indexed nodes" $
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annotatedToRows (formatted "[ a,\nb ]" "[\na,\nb ]" "branch" (Indexed [
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Free . offsetAnnotated 2 2 $ unchanged "a" "leaf" (Leaf ""),
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Free . offsetAnnotated 5 5 $ unchanged "b" "leaf" (Leaf "")
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])) "[ a,\nb ]" "[\na,\nb ]" `shouldBe`
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([
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Row (Line [ Ul (Just "category-branch") [ Text "[ ", span "a", Text ",", Break ] ])
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(Line [ Ul (Just "category-branch") [ Text "[", Break ] ]),
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Row EmptyLine
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(Line [ Ul (Just "category-branch") [ span "a", Text ",", Break ] ]),
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Row (Line [ Ul (Just "category-branch") [ span "b", Text " ]" ] ])
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(Line [ Ul (Just "category-branch") [ span "b", Text " ]" ] ])
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], (Range 0 8, Range 0 8))
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it "" $
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let (sourceA, sourceB) = ("[\na\n,\nb]", "[a,b]") in
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annotatedToRows (formatted sourceA sourceB "branch" (Indexed [
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Free . offsetAnnotated 2 1 $ unchanged "a" "leaf" (Leaf ""),
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Free . offsetAnnotated 6 3 $ unchanged "b" "leaf" (Leaf "")
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])) sourceA sourceB `shouldBe`
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([
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Row (Line [ Ul (Just "category-branch") [ Text "[", Break ] ])
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(Line [ Ul (Just "category-branch") [ Text "[", span "a", Text ",", span "b", Text "]" ] ]),
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Row (Line [ Ul (Just "category-branch") [ span "a", Break ] ])
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EmptyLine,
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Row (Line [ Ul (Just "category-branch") [ Text ",", Break ] ])
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EmptyLine,
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Row (Line [ Ul (Just "category-branch") [ span "b", Text "]" ] ])
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EmptyLine
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], (Range 0 8, Range 0 5))
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it "should split multi-line deletions across multiple rows" $
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let (sourceA, sourceB) = ("/*\n*/\na", "a") in
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annotatedToRows (formatted sourceA sourceB "branch" (Indexed [
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Pure . Delete $ (Info (Range 0 5) (Range 0 2) (Set.fromList ["leaf"]) :< (Leaf "")),
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Free . offsetAnnotated 6 0 $ unchanged "a" "leaf" (Leaf "")
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])) sourceA sourceB `shouldBe`
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([
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Row (Line [ Ul (Just "category-branch") [ Div (Just "delete") [ span "/*", Break ] ] ]) EmptyLine,
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Row (Line [ Ul (Just "category-branch") [ Div (Just "delete") [ span "*/" ], Break ] ]) EmptyLine,
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Row (Line [ Ul (Just "category-branch") [ span "a" ] ]) (Line [ Ul (Just "category-branch") [ span "a" ] ])
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], (Range 0 7, Range 0 1))
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describe "adjoin2" $ do
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prop "is idempotent for additions of empty rows" $
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\ a -> adjoin2 (adjoin2 [ a ] mempty) mempty == (adjoin2 [ a ] mempty)
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prop "is identity on top of empty rows" $
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\ a -> adjoin2 [ mempty ] a == [ a ]
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prop "is identity on top of no rows" $
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\ a -> adjoin2 [] a == [ a ]
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it "appends appends HTML onto incomplete lines" $
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adjoin2 [ rightRowText "[" ] (rightRowText "a") `shouldBe`
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[ rightRow [ Text "[", Text "a" ] ]
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it "does not append HTML onto complete lines" $
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adjoin2 [ leftRow [ Break ] ] (leftRowText ",") `shouldBe`
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[ leftRowText ",", leftRow [ Break ] ]
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it "appends breaks onto incomplete lines" $
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adjoin2 [ leftRowText "a" ] (leftRow [ Break ]) `shouldBe`
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[ leftRow [ Text "a", Break ] ]
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it "does not promote HTML through empty lines onto complete lines" $
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adjoin2 [ rightRowText "b", leftRow [ Break ] ] (leftRowText "a") `shouldBe`
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[ leftRowText "a", rightRowText "b", leftRow [ Break ] ]
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it "promotes breaks through empty lines onto incomplete lines" $
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adjoin2 [ rightRowText "c", rowText "a" "b" ] (leftRow [ Break ]) `shouldBe`
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[ rightRowText "c", Row (Line [ Text "a", Break ]) (Line [ Text "b" ]) ]
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describe "termToLines" $ do
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it "splits multi-line terms into multiple lines" $
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termToLines (Info (Range 0 5) (Range 0 2) (Set.singleton "leaf") :< (Leaf "")) "/*\n*/"
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`shouldBe`
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([
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Line [ span "/*", Break ],
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Line [ span "*/" ]
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], Range 0 5)
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describe "openLine" $ do
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it "should produce the earliest non-empty line in a list, if open" $
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openLine [
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Line [ Div (Just "delete") [ span "*/" ] ],
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Line [ Div (Just "delete") [ span " * Debugging", Break ] ],
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Line [ Div (Just "delete") [ span "/*", Break ] ]
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] `shouldBe` (Just $ Line [ Div (Just "delete") [ span "*/" ] ])
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it "should return Nothing if the earliest non-empty line is closed" $
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openLine [
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Line [ Div (Just "delete") [ span " * Debugging", Break ] ]
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] `shouldBe` Nothing
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where
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rightRowText text = rightRow [ Text text ]
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rightRow xs = Row EmptyLine (Line xs)
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leftRowText text = leftRow [ Text text ]
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leftRow xs = Row (Line xs) EmptyLine
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rowText a b = Row (Line [ Text a ]) (Line [ Text b ])
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info source category = Info (totalRange source) (Range 0 0) (Set.fromList [ category ])
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unchanged source category = formatted source source category
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formatted source1 source2 category = Annotated (info source1 category, info source2 category)
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offsetInfo by (Info (Range start end) lineRange categories) = Info (Range (start + by) (end + by)) lineRange categories
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offsetAnnotated by1 by2 (Annotated (left, right) syntax) = Annotated (offsetInfo by1 left, offsetInfo by2 right) syntax
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span = Span (Just "category-leaf")
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