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from __future__ import annotations
import Levenshtein
def test_empty_string():
"""
when both strings are empty this is a perfect match
"""
assert Levenshtein.distance(b"", b"") == 0
assert Levenshtein.distance("", "") == 0
def test_simple():
"""
some very simple tests using supported string types
bytes/unicode
to catch relatively obvious implementation errors
"""
assert Levenshtein.distance(b"ABCD", b"AF") == 3
assert Levenshtein.distance("ABCD", "AF") == 3
assert Levenshtein.distance(b"ABCD", b"ABCD") == 0
assert Levenshtein.distance("ABCD", "ABCD") == 0
def test_simple_unicode_tests():
"""
some very simple tests using unicode
to catch relatively obvious implementation errors
"""
s1 = "ÁÄ"
s2 = "ABCD"
assert Levenshtein.distance(s1, s2) == 4
assert Levenshtein.distance(s1, s1) == 0
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