text: from sympy.functions.elementary.trigonometric import sin
  from sympy.printing.gtk import print_gtk
  from sympy.testing.pytest import XFAIL, raises
  
  # this test fails if python-lxml isn't installed. We don't want to depend on
  # anything with SymPy
  
  
  @XFAIL
  def test_1():
      from sympy.abc import x
      print_gtk(x**2, start_viewer=False)
      print_gtk(x**2 + sin(x)/4, start_viewer=False)
  
  
  def test_settings():
      from sympy.abc import x
      raises(TypeError, lambda: print_gtk(x, method="garbage"))
  