class_docstr: Most tests done in the base class LinearOperatorDerivedClassTest.
code: def test_matrix_must_have_at_least_two_dims_or_raises(self):
      with self.assertRaisesRegex(ValueError, "at least 2 dimensions"):
          linalg.LinearOperatorFullMatrix([1.0])
  
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 3 for calling the NonSquareLinearOperatorFullMatrixTest obj's underlying member method code with example usage: obj.test_matrix_must_have_at_least_two_dims_or_raises() without return types