code: def test_valid_pad_2d(self):
      actual = aggregated_pad(
          pad_type="valid",
          kernel_shape=(1, 2),
      )
  
      expected = [0, 0]
      np.testing.assert_equal(actual, expected)
  
imports: import numpy
  from coremltools.converters.mil.mil.ops.defs._utils import aggregated_pad, effective_kernel, spatial_dimensions_out_shape
label_desc: Use image node_id 8 for calling the TestAggregatePadding obj's underlying member method code with example usage: obj.test_valid_pad_2d() without return types