code: def _test(self, size):
      with self.session() as sess:
          x_tf = array_ops.placeholder(np.float32, shape=[size, 512])
          with self.test_scope():
              ret = array_ops_stack.unstack(x_tf)
          ret_vals = sess.run(
              [ret], feed_dict={x_tf: np.zeros([size, 512])}
          )
          self.assertLen(ret_vals[0], size)
          for ret_val in ret_vals[0]:
              self.assertTrue(np.all(ret_val == 0.0))
  
file_path: tensorflow-upstream/tensorflow/compiler/tests/unstack_test.py
imports: from absl.testing import parameterized
  import numpy
  from tensorflow.compiler.tests import xla_test
  from tensorflow.python.ops import array_ops
  from tensorflow.python.ops import array_ops_stack
  from tensorflow.python.platform import test
label_desc: Use image node_id 1 for calling the UnstackOpTest obj's underlying member method code with example usage: obj._test(size) without return types