IDENTIFIER<this_identifier_is_not_assert> EOL
 IDENTIFIER<NEITHER_IS_THIS_123> EOL
 IDENTIFIER<but_the_next_one_is> EOL
 IDENTIFIER<assert> EOL
 IDENTIFIER<next_one_is_not_an_identifier> EOL
line 6: unexpected character at '1'
 EOF
line 1: unexpected character at '"'
 EOF
line 1: unexpected character at '='
 EOF
line 1: unexpected character at '9'
 EOF