def test_sharedPrefix(self):
args = ['prefix', 'prefixasdf', 'prefix', 'prefixxxx']
self.assertEqual(sharedPrefix(args), 'prefix')
args = ['p', 'prefixasdf', 'prefix', 'prefixxxx']
self.assertEqual(sharedPrefix(args), 'p')
args = ['one', 'two']
self.assertEqual(sharedPrefix(args), '')
args = ['hi']
self.assertEqual(sharedPrefix(args), 'hi')
def depth(self):
sp = sharedPrefix([n.id for n in self.nodes.values()])
return len(sp)