class_docstr: Most tests done in the base class LinearOperatorDerivedClassTest.
class_docstr_tok: ["Most","tests","done","in","the","base","class","LinearOperatorDerivedClassTest","."]
code: def operator_shapes_infos():
      shape_info = linear_operator_test_util.OperatorShapesInfo
      return [
          shape_info((0, 0)),
          shape_info((1, 1)),
          shape_info((1, 3, 3)),
          shape_info((5, 5), blocks=[[(2, 2)], [(3, 2), (3, 3)]]),
          shape_info(
              (3, 7, 7),
              blocks=[
                  [(1, 2, 2)],
                  [(1, 3, 2), (3, 3, 3)],
                  [(1, 2, 2), (1, 2, 3), (1, 2, 2)],
              ],
          ),
          shape_info(
              (2, 4, 6, 6),
              blocks=[[(2, 1, 2, 2)], [(1, 4, 2), (4, 4, 4)]],
          ),
      ]
  
imports: import numpy
  from tensorflow.python.eager import backprop
  from tensorflow.python.eager import context
  from tensorflow.python.framework import config
  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 variables
  from tensorflow.python.ops.linalg import linalg
  from tensorflow.python.ops.linalg import linear_operator_block_lower_triangular
  from tensorflow.python.ops.linalg import linear_operator_test_util
  from tensorflow.python.ops.linalg import linear_operator_util
  from tensorflow.python.platform import test
label_desc: Use image node_id 5 for calling the SquareLinearOperatorBlockLowerTriangularTest obj's underlying member method code with example usage: obj.operator_shapes_infos() and returns: list