def test_discard(self):
c = PrefixCache(Word, 'normalized_spelling')
c.add(u'jkl')
c.add(u'mno')
c.add(u'mnp')
self.assertEqual(sorted(c.items()),
[(u'jk', set([u'jkl'])),
(u'mn', set([u'mno', u'mnp']))])
c.discard(u'jkl')
c.discard(u'mno')
self.assertEqual(c.items(), [(u'mn', set([u'mnp'])),
(u'jk', set([]))])
def test_add(self):
c = PrefixCache(Word, 'normalized_spelling')
c.add(u'ghi')
self.assertEqual(c.items(), [(u'gh', set([u'ghi']))])
