def test_degree_assortativity_directed(self):
r=mixing.degree_pearsonr(self.D)
npt.assert_almost_equal(r,-0.57735,decimal=4)
def test_degree_assortativity_multigraph(self):
r=mixing.degree_pearsonr(self.M)
npt.assert_almost_equal(r,-1.0/7.0,decimal=4)
def test_degree_assortativity_undirected(self):
r=mixing.degree_pearsonr(self.P4)
npt.assert_almost_equal(r,-1.0/2,decimal=4)
