code: def testNegativeAxisWithUnknownRankError(self):
      if context.executing_eagerly():
          return
      rt_inputs = [
          array_ops.placeholder(dtypes.int64),
          array_ops.placeholder(dtypes.int64),
      ]
      self.assertRaisesRegex(
          ValueError,
          r"axis=-1 may only be negative if ndims is statically known.",
          ragged_concat_ops.concat,
          rt_inputs,
          -1,
      )
  
file_path: tensorflow-upstream/tensorflow/python/ops/ragged/ragged_concat_op_test.py
imports: from absl.testing import parameterized
  from tensorflow.python.eager import context
  from tensorflow.python.framework import constant_op
  from tensorflow.python.framework import dtypes
  from tensorflow.python.framework import errors
  from tensorflow.python.framework import test_util
  from tensorflow.python.ops import array_ops
  from tensorflow.python.ops.ragged import ragged_concat_ops
  from tensorflow.python.ops.ragged import ragged_factory_ops
  from tensorflow.python.platform import googletest
label_desc: Use image node_id 5 for calling the RaggedConcatOpTest obj's underlying member method code with example usage: obj.testNegativeAxisWithUnknownRankError() without return types