code: def test_magnitude(self, shape, result_shape):
      size = 1
      for x in shape:
          size *= x
      inputs = jnp.arange(size).reshape(shape)
  
      @partial(jnp.vectorize, signature="(n)->()")
      def magnitude(x):
          return jnp.dot(x, x)
  
      self.assertEqual(magnitude(inputs).shape, result_shape)
  
imports: from functools import partial
  from absl.testing import absltest
  import numpy
  import jax
  from jax import numpy
  from jax._src import test_util
  from jax import config
label_desc: Use image node_id 4 for calling the VectorizeTest obj's underlying member method code with example usage: obj.test_magnitude(shape, result_shape) and returns: jnp