code: def test_simple_case_nchwtensor(self):
      layer = group_norm.GroupNorm(
          groups=5,
          data_format="NCHW",
          create_scale=False,
          create_offset=False,
      )
  
      inputs = jnp.ones([2, 10, 3, 3])
      scale = constant(0.5, shape=(10, 1, 1))
      offset = constant(2.0, shape=(10, 1, 1))
  
      outputs = layer(inputs, scale, offset)
      for x in np.nditer(outputs):
          self.assertEqual(x, 2.0)
  
imports: from absl.testing import absltest
  from absl.testing import parameterized
  from haiku._src import group_norm
  from haiku._src import initializers
  from haiku._src import test_utils
  import jax.numpy
  import numpy
label_desc: Use image node_id 6 for calling the GroupNormTest obj's underlying member method code with example usage: obj.test_simple_case_nchwtensor() without return types