class_docstr: Most tests done in the base class LinearOperatorDerivedClassTest.
code: def setUp(self):
      # TODO(srvasude): Lower these tolerances once specialized solve and
      # determinants are implemented.
      self._atol[dtypes.float32] = 1e-4
      self._rtol[dtypes.float32] = 1e-4
      self._atol[dtypes.float64] = 1e-9
      self._rtol[dtypes.float64] = 1e-9
      self._atol[dtypes.complex64] = 1e-4
      self._rtol[dtypes.complex64] = 1e-4
      self._atol[dtypes.complex128] = 1e-9
      self._rtol[dtypes.complex128] = 1e-9
  
imports: import contextlib
  import numpy
  import scipy.linalg
  from tensorflow.python.eager import backprop
  from tensorflow.python.framework import dtypes
  from tensorflow.python.framework import test_util
  from tensorflow.python.ops import array_ops
  from tensorflow.python.ops import math_ops
  from tensorflow.python.ops import variables
  from tensorflow.python.ops.linalg import linalg
  from tensorflow.python.ops.linalg import linear_operator_test_util
  from tensorflow.python.ops.linalg import linear_operator_toeplitz
  from tensorflow.python.platform import test
label_desc: Use image node_id 2 for calling the LinearOperatorToeplitzTest obj's underlying member method code with example usage: obj.setUp() without return types