def test_replace_backreference():
builder = BistrBuilder("it doesn't work and stuff doesn't get replaced")
builder.replace_all(r"\bdoesn't (\S+)", r'\1s')
bs = builder.build()
assert bs.original == "it doesn't work and stuff doesn't get replaced"
assert bs.modified == 'it works and stuff gets replaced'
def test_replace_matches():
builder = BistrBuilder(
'the cheese that the mouse that the cat that the dog chased played with ate'
)
builder.replace_next(r'that', 'which')
builder.replace_all(r'that', 'whom')
bs = builder.build()
assert bs.original == 'the cheese that the mouse that the cat that the dog chased played with ate'
assert bs.modified == 'the cheese which the mouse whom the cat whom the dog chased played with ate'
def test_iterative():
builder = BistrBuilder("I wish I wouldn't've spent one thousand dollars.")
builder.skip_match(r'[^.]*')
builder.discard_rest()
builder.rewind()
builder.skip_match(r'I wish I ')
builder.replace_match(r"wouldn't've", 'would not have')
builder.skip_match(r' spent ')
builder.replace_match(r'one thousand dollars', '$1,000')
bs = builder.build()
assert bs.original == "I wish I wouldn't've spent one thousand dollars."
assert bs.modified == 'I wish I would not have spent $1,000'
def test_empty_string():
builder = BistrBuilder('')
bs = builder.build()
assert bs.original == ''
assert bs.modified == ''
assert bs[0:0].original == ''
def test_chunk_words():
builder = BistrBuilder(' the quick brown fox ')
builder.discard(2)
builder.replace(3, 'the')
builder.skip(1)
builder.replace(5, 'quick')
builder.replace(2, ' ')
builder.replace(5, 'brown')
builder.skip(1)
builder.replace(3, 'fox')
builder.discard(1)
bs = builder.build()
assert bs.original == ' the quick brown fox '
assert bs.modified == 'the quick brown fox'
assert bs[0:1].original == 'the'
assert bs[1:2].original == 'the'
assert bs[2:3].original == 'the'
assert bs[0:3].original == 'the'
assert bs[1:3].original == 'the'
assert bs[0:4].original == 'the '
assert bs[1:4].original == 'the '
assert bs[3:4].original == ' '
assert bs[9:10].original == ' '
assert bs[4:15].original == 'quick brown'
assert bs[5:14].original == 'quick brown'
assert bs[0:0].original == ''
assert bs[10:10].original == ''
def test_chunk_chars():
builder = BistrBuilder(' the quick brown fox ')
builder.discard_match(r'\s+')
while not builder.is_complete:
builder.skip_match(r'\S+')
builder.replace_match(r'\s+(?=\S)', ' ')
builder.discard_match(r'\s+$')
bs = builder.build()
assert bs.original == ' the quick brown fox '
assert bs.modified == 'the quick brown fox'
assert bs[0:1].original == 't'
assert bs[1:2].original == 'h'
assert bs[2:3].original == 'e'
assert bs[0:3].original == 'the'
assert bs[1:3].original == 'he'
assert bs[0:4].original == 'the '
assert bs[1:4].original == 'he '
assert bs[3:4].original == ' '
assert bs[9:10].original == ' '
assert bs[4:15].original == 'quick brown'
assert bs[5:14].original == 'uick brow'
assert bs[0:0].original == ''
assert bs[10:10].original == ''
def test_append():
builder = BistrBuilder('hello WORLD')
builder.append(bistr(builder.peek(5)).upper('en_US'))
builder.skip(1)
builder.append(bistr(builder.peek(5)).lower('en_US'))
bs = builder.build()
assert bs[1:4] == bistr('ell', 'ELL', Alignment.identity(3))
assert bs[7:10] == bistr('ORL', 'orl', Alignment.identity(3))