code: def test_expand_dims_flax(self):
      x = np.random.randn(3, 4)
      t = jnp.array(x)
      self.assertTrue(
          np.allclose(
              expand_dims(x, axis=1), np.asarray(expand_dims(t, axis=1))
          )
      )
  
imports: import unittest
  import numpy
  from transformers.testing_utils import require_flax, require_tf, require_torch
  from transformers.utils import expand_dims, flatten_dict, is_flax_available, is_tf_available, is_torch_available, reshape, squeeze, transpose
label_desc: Use image node_id 17 for calling the GenericTester obj's underlying member method code with example usage: obj.test_expand_dims_flax() without return types