code: def testFftEmpty(self):
      out = jnp.fft.fft(
          jnp.zeros((0,), jnp.complex64)
      ).block_until_ready()
      self.assertArraysEqual(jnp.zeros((0,), jnp.complex64), out)
  
imports: import itertools
  import numpy
  from absl.testing import absltest
  from absl.testing import parameterized
  import jax
  from jax import lax
  from jax import numpy
  from jax._src import config
  from jax._src import dtypes
  from jax._src import test_util
  from jax._src.numpy.util import promote_dtypes_complex
label_desc: Use image node_id 7 for calling the FftTest obj's underlying member method code with example usage: obj.testFftEmpty() without return types