text: import pytest
  
  from pybtex.markup import LaTeXParser
  from pybtex.scanner import PybtexSyntaxError
  
  
  @pytest.mark.parametrize(["bad_input"], [("abc{def}}",), ("abc{def}{",)])
  def test_syntax_error(bad_input):
      with pytest.raises(PybtexSyntaxError):
          LaTeXParser(bad_input).parse()
  