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https://github.com/qurator-spk/dinglehopper.git
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71 lines
2.6 KiB
Python
71 lines
2.6 KiB
Python
import unicodedata
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import pytest
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from extracted_text import ExtractedText, ExtractedTextSegment
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from uniseg.graphemecluster import grapheme_clusters
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from qurator.dinglehopper import seq_align
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from collections import namedtuple
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def test_text():
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test1 = ExtractedText([
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ExtractedTextSegment('s0', 'foo'),
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ExtractedTextSegment('s1', 'bar'),
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ExtractedTextSegment('s2', 'bazinga')
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], ' ')
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assert test1.text == 'foo bar bazinga'
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assert test1.segment_id_for_pos(0) == 's0'
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assert test1.segment_id_for_pos(3) is None
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assert test1.segment_id_for_pos(10) == 's2'
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def test_normalization_check():
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with pytest.raises(ValueError, match=r'.*is not normalized.*'):
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ExtractedTextSegment('foo', unicodedata.normalize('NFD', 'Schlyñ'))
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assert ExtractedTextSegment('foo', unicodedata.normalize('NFC', 'Schlyñ'))
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AlignmentElement = namedtuple('AlignmentElement', 'left right left_id right_id')
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def test_align():
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"""
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Test aligning by character while retaining segment id info
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The difficulty here is that aligning should work on grapheme clusters,
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not Python characters.
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"""
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test1 = ExtractedText([
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ExtractedTextSegment('s0', 'foo'),
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ExtractedTextSegment('s1', 'bar'),
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ExtractedTextSegment('s2', 'batzinga')
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], ' ')
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test2 = ExtractedText([
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ExtractedTextSegment('x0', 'foo'),
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ExtractedTextSegment('x1', 'bar'),
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ExtractedTextSegment('x2', '.'), # extra .
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ExtractedTextSegment('x3', 'bazim̃ga'), # deletion + different grapheme cluster, m̃ also is two Python characters
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], ' ')
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left_pos = 0; right_pos = 0; alignment = []
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for left, right in seq_align(grapheme_clusters(test1.text), grapheme_clusters(test2.text)):
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left_id = test1.segment_id_for_pos(left_pos) if left is not None else None
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right_id = test2.segment_id_for_pos(right_pos) if right is not None else None
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# XXX note that deletions and inserts only produce one id + None, UI must
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# support this, i.e. display for the one id produced
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# XXX otherwise, it should always display for BOTH ids
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el = AlignmentElement(left, right, left_id, right_id)
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alignment.append(el)
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if left is not None:
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left_pos += len(left)
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if right is not None:
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right_pos += len(right)
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print('test1: {}'.format(test1.text))
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print('test2: {}'.format(test2.text))
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assert alignment[0] == ('f', 'f', 's0', 'x0')
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assert alignment[8] == (None, '.', None, 'x2')
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assert alignment[12] == ('t', None, 's2', None)
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assert alignment[15] == ('n', 'm̃', 's2', 'x3')
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