class_docstr: Check that solve/dot methods in Jacobian approximations are consistent
class_docstr_tok: ["Check","that","solve\/dot","methods","in","Jacobian","approximations","are","consistent"]
code: def test_linearmixing(self):
      self._check_dot(nonlin.LinearMixing, complex=False)
      self._check_dot(nonlin.LinearMixing, complex=True)
  
imports: from numpy.testing import assert_
  import pytest
  from scipy.optimize import nonlin, root
  from numpy import diag, dot
  from numpy.linalg import inv
  import numpy
  from .test_minpack import pressure_network
label_desc: Use image node_id 7 for calling the TestJacobianDotSolve obj's underlying member method code with example usage: obj.test_linearmixing() without return types