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Test that children assignments nest.

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This commit is contained in:
Rob Rix 2017-04-10 10:35:39 -04:00
parent c9cf3d0bb8
commit c2482a0610
1 changed files with 7 additions and 0 deletions
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7
test/Data/Syntax/Assignment/Spec.hs
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@ -46,6 +46,13 @@ spec = do
it "does not match if its subrule does not match" $
runAssignment (children red) [ast Blue "b" [ast Green "a" []]] `shouldBe` Nothing
it "matches nested children" $ do
runAssignment
(rule 'A' *> children (rule 'B' *> children (rule 'C' *> content)))
[ ast 'A' "" [ ast 'B' "" [ ast 'C' "1" [] ] ] ]
`shouldBe`
Just ([], "1")
ast :: grammar -> ByteString -> [AST grammar] -> AST grammar
ast g s c = Rose (Node g s) c