def test_eps(self):
"""Test the P_cif.eps coordinates resolution.
"""
pcif = P_cif()
pcif.eps = 1e-8
grph = pcif.parseFile(self.graphiteciffile)
self.assertEqual(8, len(grph))
self.assertTrue(all(a.label.startswith('C1') for a in grph[:2]))
self.assertTrue(all(a.label.startswith('C2') for a in grph[2:]))
pcif2 = P_cif()
pcif2.eps = 1e-3
grph2 = pcif2.parseFile(self.graphiteciffile)
self.assertEqual(4, len(grph2))
return
