def test_fingerprint(self):
"""CodonUsage fingerprint should give correct ratios."""
c = EqualBases.codons()
f = c.fingerprint()
self.assertEqual(len(f), 9)
self.assertEqual(f, \
[[.5,.5,.125] for i in range(8)] + [[.5,.5,1]])
#should be able to omit mean...
f = c.fingerprint(include_mean=False)
self.assertEqual(f, [[.5,.5,.125] for i in range(8)])
#...or use all doublets
f = c.fingerprint(include_mean=False, which_blocks='all')
self.assertEqual(len(f), 16)
#...or do just the non-quartet ones
f = c.fingerprint(include_mean=False, which_blocks='split')
self.assertEqual(len(f), 6)
#check that it doesn't fail on an empty codon usage
c = CodonUsage('')
f = c.fingerprint()
self.assertEqual(f[0], [0.5, 0.5, 0])
