code: def testNegative(self):
      input_array = _input_array(num_dims=5)
      truths = [
          _joined_array(num_dims=5, reduce_dim=i) for i in range(5)
      ]
      truth_shape = [2] * 4
      for i in range(5):
          self._testReduceJoin(
              input_array, truths[i], truth_shape, axis=i - 5
          )
  
imports: import itertools
  import numpy
  from tensorflow.python.framework import constant_op
  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 string_ops
  from tensorflow.python.platform import test
label_desc: Use image node_id 6 for calling the ReduceJoinTest obj's underlying member method code with example usage: obj.testNegative() without return types