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49 lines
1.8 KiB
Python
49 lines
1.8 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', '') == [('delete', 0, 0), ('delete', 1, 0), ('delete', 2, 0)]
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assert seq_editops('Foolish', 'Foo') == [('delete', 3, 3), ('delete', 4, 3), ('delete', 5, 3), ('delete', 6, 3)]
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def test_ambiguous():
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assert seq_editops('bcd', 'abcef') == [('insert', 0, 0), ('replace', 2, 3), ('insert', 3, 4)]
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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('COMBINING TILDE')
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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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