graphql/tests/Language/GraphQL/AST/LexerSpec.hs
Eugen Wissner b056b4256f
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Replace gql in Encoder tests with multiline string
2024-10-14 20:50:34 +02:00

99 lines
4.5 KiB
Haskell

{-# LANGUAGE OverloadedStrings #-}
module Language.GraphQL.AST.LexerSpec
( spec
) where
import Data.Text (Text)
import Data.Void (Void)
import Language.GraphQL.AST.Lexer
import Test.Hspec (Spec, context, describe, it)
import Test.Hspec.Megaparsec (shouldParse, shouldFailOn, shouldSucceedOn)
import Text.Megaparsec (ParseErrorBundle, parse)
spec :: Spec
spec = describe "Lexer" $ do
context "Reference tests" $ do
it "accepts BOM header" $
parse unicodeBOM "" `shouldSucceedOn` "\xfeff"
it "lexes strings" $ do
parse string "" "\"simple\"" `shouldParse` "simple"
parse string "" "\" white space \"" `shouldParse` " white space "
parse string "" "\"quote \\\"\"" `shouldParse` "quote \""
parse string "" "\"escaped \\n\"" `shouldParse` "escaped \n"
parse string "" "\"slashes \\\\ \\/\"" `shouldParse` "slashes \\ /"
parse string "" "\"unicode \\u1234\\u5678\\u90AB\\uCDEF\""
`shouldParse` "unicode ሴ噸邫췯"
it "lexes block string" $ do
parse blockString "" "\"\"\"simple\"\"\"" `shouldParse` "simple"
parse blockString "" "\"\"\" white space \"\"\""
`shouldParse` " white space "
parse blockString "" "\"\"\"contains \" quote\"\"\""
`shouldParse` "contains \" quote"
parse blockString "" "\"\"\"contains \\\"\"\" triplequote\"\"\""
`shouldParse` "contains \"\"\" triplequote"
parse blockString "" "\"\"\"multi\nline\"\"\"" `shouldParse` "multi\nline"
parse blockString "" "\"\"\"multi\rline\r\nnormalized\"\"\""
`shouldParse` "multi\nline\nnormalized"
parse blockString "" "\"\"\"multi\rline\r\nnormalized\"\"\""
`shouldParse` "multi\nline\nnormalized"
parse blockString "" "\"\"\"unescaped \\n\\r\\b\\t\\f\\u1234\"\"\""
`shouldParse` "unescaped \\n\\r\\b\\t\\f\\u1234"
parse blockString "" "\"\"\"slashes \\\\ \\/\"\"\""
`shouldParse` "slashes \\\\ \\/"
parse blockString "" "\"\"\"\n\
\\n\
\ spans\n\
\ multiple\n\
\ lines\n\
\\n\
\\"\"\""
`shouldParse` "spans\n multiple\n lines"
it "lexes numbers" $ do
parse integer "" "4" `shouldParse` (4 :: Int)
parse float "" "4.123" `shouldParse` 4.123
parse integer "" "-4" `shouldParse` (-4 :: Int)
parse integer "" "9" `shouldParse` (9 :: Int)
parse integer "" "0" `shouldParse` (0 :: Int)
parse float "" "-4.123" `shouldParse` (-4.123)
parse float "" "0.123" `shouldParse` 0.123
parse float "" "123e4" `shouldParse` 123e4
parse float "" "123E4" `shouldParse` 123E4
parse float "" "123e-4" `shouldParse` 123e-4
parse float "" "123e+4" `shouldParse` 123e+4
parse float "" "-1.123e4" `shouldParse` (-1.123e4)
parse float "" "-1.123E4" `shouldParse` (-1.123E4)
parse float "" "-1.123e-4" `shouldParse` (-1.123e-4)
parse float "" "-1.123e+4" `shouldParse` (-1.123e+4)
parse float "" "-1.123e4567" `shouldParse` (-1.123e4567)
it "lexes punctuation" $ do
parse bang "" "!" `shouldParse` "!"
parse dollar "" "$" `shouldParse` "$"
runBetween parens `shouldSucceedOn` "()"
parse spread "" "..." `shouldParse` "..."
parse colon "" `shouldSucceedOn` ":"
parse equals "" "=" `shouldParse` "="
parse at "" `shouldSucceedOn` "@"
runBetween brackets `shouldSucceedOn` "[]"
runBetween braces `shouldSucceedOn` "{}"
parse pipe "" "|" `shouldParse` "|"
context "Implementation tests" $ do
it "lexes empty block strings" $
parse blockString "" "\"\"\"\"\"\"" `shouldParse` ""
it "lexes ampersand" $
parse amp "" "&" `shouldParse` "&"
it "lexes schema extensions" $
parseExtend "schema" `shouldSucceedOn` "extend schema"
it "fails if the given token doesn't match" $
parseExtend "schema" `shouldFailOn` "extend shema"
parseExtend :: Text -> (Text -> Either (ParseErrorBundle Text Void) ())
parseExtend extension = parse (extend extension "" $ pure $ pure ()) ""
runBetween :: (Parser () -> Parser ()) -> Text -> Either (ParseErrorBundle Text Void) ()
runBetween parser = parse (parser $ pure ()) ""