class_docstr: Most tests done in the base class LinearOperatorDerivedClassTest.
code: def test_is_x_flags(self):
      matrix = [[3.0, 2.0, 1.0], [1.0, 1.0, 1.0]]
      operator = linalg.LinearOperatorFullMatrix(
          matrix, is_self_adjoint=False
      )
      self.assertEqual(operator.is_positive_definite, None)
      self.assertEqual(operator.is_non_singular, None)
      self.assertFalse(operator.is_self_adjoint)
      self.assertFalse(operator.is_square)
  
imports: import numpy
  from tensorflow.python.framework import config
  from tensorflow.python.framework import dtypes
  from tensorflow.python.framework import errors
  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.platform import test
label_desc: Use image node_id 2 for calling the NonSquareLinearOperatorFullMatrixTest obj's underlying member method code with example usage: obj.test_is_x_flags() without return types