code: def test_bbvi_mini_batch_elbo():
      """
      Tests that the ELBO increases
      """
      model = pf.GASX(
          formula="y ~ x1", data=data, ar=1, sc=1, family=pf.t()
      )
      x = model.fit(
          "BBVI",
          iterations=500,
          mini_batch=32,
          record_elbo=True,
          map_start=False,
      )
      assert x.elbo_records[-1] > x.elbo_records[0]
  
imports: import numpy
  import pandas
  import pyflux
label_desc: Use image node_id 7 for calling a global function with example usage: test_bbvi_mini_batch_elbo() without return types