code: def test_correctness_2d(self):
      layer_with_1_group = layers.GroupNormalization(
          groups=1, axis=-1, scale=False, center=False
      )
      layer_with_2_groups = layers.GroupNormalization(
          groups=2, axis=2, scale=False, center=False
      )
  
      inputs = np.array([[[-1.0, -1.0, 2.0, 2.0], [1.0, 1.0, 0, -2.0]]])
  
      expected_output_1_group = np.array(
          [
              [
                  [-0.898, -0.898, 1.257, 1.257],
                  [0.539, 0.539, -0.180, -1.616],
              ]
          ]
      )
  
      self.assertAllClose(
          layer_with_1_group(inputs),
          expected_output_1_group,
          atol=1e-3,
      )
  
      expected_output_2_groups = np.array(
          [[[-1.0, -1.0, 0.904, 0.904], [1.0, 1.0, -0.301, -1.507]]]
      )
      self.assertAllClose(
          layer_with_2_groups(inputs),
          expected_output_2_groups,
          atol=1e-3,
      )
  
file_path: keras/keras/layers/normalization/group_normalization_test.py
imports: import numpy
  import pytest
  from keras import constraints
  from keras import layers
  from keras import regularizers
  from keras import testing
label_desc: Use image node_id 8 for calling the GroupNormalizationTest obj's underlying member method code with example usage: obj.test_correctness_2d() without return types