As reported in #211, parsing single quoted strings causes an unexpected error.
This PR has fixed the bug and modified some test cases to ensure that parsing single quoted strings does not cause any error.
coverage: 100.0%. remained the same
when pulling 6093a727ecddc8042465e96290d6d928b4497a6a on bugfix/211_fix_parse_single_quoted_strings
into 78897488de05c2d763e37fb1b4176336dfb2ddcb on develop.
As reported in #211, parsing single quoted strings causes an unexpected error.
This PR has fixed the bug and modified some test cases to ensure that parsing single quoted strings does not cause any error.