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64 lines
1.9 KiB
Python
64 lines
1.9 KiB
Python
import unicodedata
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from .. import seq_editops, editops
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def test_trivial():
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assert seq_editops("abc", "abc") == []
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assert seq_editops("", "") == []
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def test_insert():
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assert seq_editops("bc", "abc") == [("insert", 0, 0)]
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assert seq_editops("ac", "abc") == [("insert", 1, 1)]
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assert seq_editops("ab", "abc") == [("insert", 2, 2)]
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assert seq_editops("", "a") == [("insert", 0, 0)]
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def test_multiple():
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assert seq_editops("bcd", "abce") == [("insert", 0, 0), ("replace", 2, 3)]
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def test_delete():
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assert seq_editops("abcdef", "cdef") == [("delete", 0, 0), ("delete", 1, 0)]
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assert seq_editops("Xabcdef", "Xcdef") == [("delete", 1, 1), ("delete", 2, 1)]
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assert seq_editops("abcdefg", "acdefX") == [("delete", 1, 1), ("replace", 6, 5)]
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assert seq_editops("abcde", "aabcd") == [("insert", 1, 1), ("delete", 4, 5)]
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assert seq_editops("Foo", "") == [
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("delete", 0, 0),
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("delete", 1, 0),
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("delete", 2, 0),
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]
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assert seq_editops("Foolish", "Foo") == [
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("delete", 3, 3),
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("delete", 4, 3),
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("delete", 5, 3),
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("delete", 6, 3),
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]
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def test_ambiguous():
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assert seq_editops("bcd", "abcef") == [
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("insert", 0, 0),
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("replace", 2, 3),
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("insert", 3, 4),
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]
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def test_editops():
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"""Test editops() in cases where dealing with grapheme clusters matters"""
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# In these cases, one of the words has a composed form, the other one does not.
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assert editops("Schlyñ", "Schlym̃") == [("replace", 5, 5)]
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assert editops("oͤde", "öde") == [("replace", 0, 0)]
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def test_editops_canonically_equivalent():
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left = unicodedata.lookup("LATIN SMALL LETTER N") + unicodedata.lookup(
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"COMBINING TILDE"
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)
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right = unicodedata.lookup("LATIN SMALL LETTER N WITH TILDE")
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assert left != right
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assert unicodedata.normalize("NFC", left) == unicodedata.normalize("NFC", right)
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assert editops(left, right) == []
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