code: def testNx1xN(self):
      self._test_valid(
          weights=np.asarray(
              (5, 7, 11, 3, 2, 12, 7, 5, 2, 17, 11, 3)
          ).reshape((3, 1, 4)),
          values=_test_values((3, 2, 4)),
      )
  
imports: import numpy
  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 weights_broadcast_ops
  from tensorflow.python.platform import test
label_desc: Use image node_id 9 for calling the AssertBroadcastableTest obj's underlying member method code with example usage: obj.testNx1xN() without return types