def testTrieVocabulary(self):
word = "alpha"
t = TrieVocabulary()
t.addWord(word)
t.addWord("spam")
t.addWord("ham")
t.addWord("eggs")
assert t.isPrefix(word[0:2])
assert not t.isPrefix(word)
assert t.isWord(word)
assert not t.isWord(word[0:2])
assert not t.isPrefix(word[1:])
pass
