Failing tests

[dosten]

For some reason these two tests are failing, while runs OK on the libgraphqlparser repository:

https://github.com/dosten/graphql-parser-php/blob/master/tests/reject_control_character_in_string.phpt

TEST 11/29 [tests/reject_control_character_in_string.phpt]
========DIFF========
001+ 
001- 1.13-14: unrecognized character \b
========DONE========
FAIL Reject control character in string [tests/reject_control_character_in_string.phpt]

https://github.com/dosten/graphql-parser-php/blob/master/tests/rejects_control_character.phpt

TEST 13/29 [tests/rejects_control_character.phpt]
========DIFF========
001+ 1.17: unrecognized character \
001- 1.17: unrecognized character \a
========DONE========
FAIL Rejects control character [tests/rejects_control_character.phpt]