code: def testConstructorWithInvalidArg(self):
      with ops.Graph().as_default():
          with self.assertRaises(ValueError):
              data_flow_ops.ConditionalAccumulator(
                  dtypes_lib.float32, name="Q", reduction_type="Invalid"
              )
  
imports: import time
  import numpy
  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 tensor_shape
  from tensorflow.python.framework import test_util
  from tensorflow.python.ops import array_ops
  from tensorflow.python.ops import data_flow_ops
  from tensorflow.python.ops import math_ops
  from tensorflow.python.ops import state_ops
  from tensorflow.python.ops import variables
  from tensorflow.python.platform import test
label_desc: Use image node_id 1 for calling the ConditionalAccumulatorTest obj's underlying member method code with example usage: obj.testConstructorWithInvalidArg() without return types