def testAddDeleteTokens(self):
tokens = Tokens()
tokens.addLettersWithValue(1, "ham")
tokens.addLettersWithValue(2, "spam")
assert tokens.countOverlapForValue(1, "ham") == 3
assert tokens.countOverlapForValue(2, "ham") == 2
assert tokens.countOverlapForValue(1, "spam") == 2
assert tokens.countOverlapForValue(2, "spam") == 4
assert tokens.countOverlapForValue(2, "egg") == 0
tokens.addLettersWithValue(3, "egg")
assert tokens.countCharacterForValue(3, 'g') == 2
assert tokens.countOverlapForValue(3, "egg") == 3
tokens.deleteLowestLetters('ag')
assert tokens.countCharacterForValue(1, 'a') == 0
assert tokens.countCharacterForValue(2, 'a') == 1
assert tokens.countCharacterForValue(3, 'g') == 1
tokens.deleteLowestLetters('mm')
assert tokens.countCharacterForValue(1, 'm') == 0
assert tokens.countCharacterForValue(2, 'm') == 0
assert tokens.countCharacterForValue(3, 'm') == 0
