code: def test_root_scalar_fail(self):
      with pytest.raises(ValueError):
          root_scalar(f1, method="secant", x0=3, xtol=1e-6)  # no x1
      with pytest.raises(ValueError):
          root_scalar(f1, method="newton", x0=3, xtol=1e-6)  # no fprime
      with pytest.raises(ValueError):
          root_scalar(
              f1, method="halley", fprime=f1_1, x0=3, xtol=1e-6
          )  # no fprime2
      with pytest.raises(ValueError):
          root_scalar(
              f1, method="halley", fprime2=f1_2, x0=3, xtol=1e-6
          )
  
imports: from __future__ import division, print_function, absolute_import
  import pytest
  from math import sqrt, exp, sin, cos
  from numpy.testing import assert_warns, assert_, assert_allclose, assert_equal, assert_array_equal
  import numpy
  from numpy import finfo, power, nan, isclose
  from scipy.optimize import zeros, newton, root_scalar
  from scipy._lib._util import getargspec_no_self
  from scipy.optimize._tstutils import get_tests, functions, fstrings
  from scipy._lib._numpy_compat import suppress_warnings
label_desc: Use image node_id 23 for calling the TestBasic obj's underlying member method code with example usage: obj.test_root_scalar_fail() without return types