code: def check_shaped_initializer(self, backend_config):
      initializer = initializers.Constant(
          fill_value=self.fill_value, dtype=self.dtype
      )
      xp = backend_config.xp
      w = initializers.generate_array(initializer, self.shape, xp)
      self.assertIs(backend.get_array_module(w), xp)
      self.assertTupleEqual(w.shape, self.shape)
      self.assertEqual(w.dtype, self.dtype)
      testing.assert_allclose(
          w,
          numpy.full(self.shape, self.fill_value),
          **self.check_options,
      )
  
imports: import unittest
  import numpy
  import chainer
  from chainer import backend
  from chainer import initializers
  from chainer import testing
label_desc: Use image node_id 4 for calling the TestConstant obj's underlying member method code with example usage: obj.check_shaped_initializer(backend_config) without return types