code: def testEmpty(self):
      for dtype in self.valid_dtypes:
          x = np.zeros([0]).astype(dtype)
          for axis in (-1, 0):
              self._compareAll(x, axis)
  
imports: import numpy
  from tensorflow.compiler.tests import xla_test
  from tensorflow.python.framework import constant_op
  from tensorflow.python.framework import dtypes
  from tensorflow.python.framework import errors_impl
  from tensorflow.python.framework import ops
  from tensorflow.python.framework import test_util
  from tensorflow.python.ops import array_ops
  from tensorflow.python.ops import math_ops
  from tensorflow.python.platform import test
label_desc: Use image node_id 4 for calling the CumulativeLogSumExpTest obj's underlying member method code with example usage: obj.testEmpty() without return types