new_contents: """Tests of randvars module"""
  
  import numpy as np
  
  from dapper.tools.randvars import GaussRV
  
  
  def test_gauss_rv():
      M = 4
      nsamples = 5
      grv = GaussRV(mu=0, C=0, M=M)
      assert (grv.sample(nsamples) == np.zeros((nsamples, M))).all()
  
  
  test_gauss_rv()
  
subject: Add simple test of GaussRV class