code: def test_cauchy_bbvi_elbo():
      """
      Tests that the ELBO increases
      """
      model = pf.GASLLEV(data=data, family=pf.Cauchy())
      x = model.fit(
          "BBVI", iterations=100, record_elbo=True, map_start=False
      )
      assert x.elbo_records[-1] > x.elbo_records[0]
  
imports: import numpy
  import pyflux
label_desc: Use image node_id 5 for calling a global function with example usage: test_cauchy_bbvi_elbo() without return types