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#
# Copyright (c) 2016 - 2024 -- Lars Heuer
# All rights reserved.
#
# License: BSD License
#
"""\
Test against issue #29.
<https://github.com/heuer/segno/issues/29>
"""
import os
import io
import tempfile
import shutil
import pytest
import segno
from segno import encoder
try:
from .tutils import read_matrix
# Attempted relative import in non-package
except (ValueError, SystemError, ImportError):
from tutils import read_matrix
def test_seq_behave_like_qrcode():
qr = segno.make_qr('Something')
sa = segno.QRCodeSequence([qr])
assert 1 == len(sa)
assert not qr.is_micro
assert qr.is_micro == sa.is_micro
assert qr.version == sa.version
assert qr.error == sa.error
assert qr.default_border_size == sa.default_border_size
assert qr.mask == sa.mask
assert qr.symbol_size() == sa.symbol_size()
assert qr.is_micro == sa.is_micro
assert qr == sa[0]
assert qr.png_data_uri() == sa.png_data_uri()
def test_seq_dont_behave_like_qrcode():
qr = segno.make_qr('Something')
seq = segno.QRCodeSequence([qr, qr])
assert 2 == len(seq)
with pytest.raises(AttributeError):
assert not seq.is_micro
_DATA_PARITY = (
# Expected, Input
# See ISO/IEC 18004:2015(E) page 61:
# 30 ⊕ 31 ⊕ 32 ⊕ 33 ⊕ 34 ⊕ 35 ⊕ 36 ⊕ 37 ⊕ 38 ⊕ 39 ⊕ 93 ⊕ FA ⊕ 96 ⊕ 7B = 85
(int('85', 16), '0123456789日本'),
(int('85', 16), '01234日本56789'),
(49, '123456789'),
(49, 123456789),
(160, 'Mürrisch'),
)
@pytest.mark.parametrize('expected, data', _DATA_PARITY)
def test_calc_sa_parity(expected, data):
assert expected == encoder.calc_structured_append_parity(data)
def test_illegal_version():
with pytest.raises(ValueError):
segno.make_sequence('ABCD', version='M4')
def test_encode_single():
# ISO/IEC 18004:2015(E) - page 7
# 'QR Code Symbol' as 1-M symbol
seq = segno.make_sequence('QR Code Symbol', version=1, error='M',
boost_error=False)
assert '1-M' == seq.designator
ref_matrix = read_matrix('iso-fig-1')[0]
assert ref_matrix == seq.matrix
qr = seq[0]
assert '1-M' == qr.designator
ref_matrix = read_matrix('iso-fig-1')[0]
assert ref_matrix == qr.matrix
@pytest.mark.parametrize('version,symbol_count', [(None, 4), (1, None)])
def test_encode_multi_by_version_or_symbol_count(version, symbol_count):
# ISO/IEC 18004:2015(E) - page 60
seq = segno.make_sequence('ABCDEFGHIJKLMN'
'OPQRSTUVWXYZ0123'
'456789ABCDEFGHIJ'
'KLMNOPQRSTUVWXYZ',
version=version, symbol_count=symbol_count,
error='m', mask=4, boost_error=False)
assert 4 == len(seq)
ref_matrix = read_matrix('seq-iso-04-01')[0]
assert ref_matrix == seq[0].matrix
ref_matrix = read_matrix('seq-iso-04-02')[0]
assert ref_matrix == seq[1].matrix
ref_matrix = read_matrix('seq-iso-04-03')[0]
assert ref_matrix == seq[2].matrix
ref_matrix = read_matrix('seq-iso-04-04')[0]
assert ref_matrix == seq[3].matrix
def test_too_much_for_one_qrcode():
data = 'A' * 4296 # Version 40 supports max. 4296 alphanumeric chars (40-L)
data += 'B'
with pytest.raises(ValueError) as ex:
segno.make(data)
assert 'too large' in str(ex.value)
def test_dataoverflow():
data = 'A' * 4296 # Version 40: max. 4296 alphanumeric chars
seq = segno.make_sequence(data, version=40)
assert 1 == len(seq)
data += 'B'
seq = segno.make_sequence(data, version=40)
assert 2 == len(seq)
def test_dataoverflow_error():
data = 'A' * 4296 * 16 # Version 40: max. 4296 alphanumeric chars * 16 symbols
data = data[:-4] # Remove some chars taking some SA overhead into account
seq = segno.make_sequence(data, version=40)
assert 16 == len(seq)
data += 'B'
with pytest.raises(segno.DataOverflowError) as ex:
segno.make_sequence(data, version=40)
assert 'does not fit' in str(ex.value)
def test_no_version_provided():
with pytest.raises(ValueError):
segno.make_sequence('A')
def test_int():
data = int('1' * 42)
seq = segno.make_sequence(data, version=1)
assert 2 == len(seq)
def test_save_one():
directory = tempfile.mkdtemp()
assert 0 == len(os.listdir(directory))
seq = segno.make_sequence('ABC', version=1)
assert 1 == len(seq)
seq.save(os.path.join(directory, 'test.svg'))
number_of_files = len(os.listdir(directory))
shutil.rmtree(directory)
assert 1 == number_of_files
def test_save_multiple():
directory = tempfile.mkdtemp()
assert 0 == len(os.listdir(directory))
seq = segno.make_sequence('ABCDEFGHIJKLMN'
'OPQRSTUVWXYZ0123'
'456789ABCDEFGHIJ'
'KLMNOPQRSTUVWXYZ', version=1, error='m')
assert 4 == len(seq)
seq.save(os.path.join(directory, 'test.svg'))
number_of_files = len(os.listdir(directory))
shutil.rmtree(directory)
assert 4 == number_of_files
def test_save_terminal_one():
out_multiple = io.StringIO()
data = 'QR Code Symbol'
seq = segno.make_sequence(data, version=1)
assert 1 == len(seq)
seq.terminal(out_multiple)
qr = segno.make_qr(data, version=1)
out_single = io.StringIO()
qr.terminal(out_single)
assert out_single.getvalue() == out_multiple.getvalue()
def test_save_terminal_multiple():
out_multiple = io.StringIO()
data = 'ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ'
seq = segno.make_sequence(data, version=1, error='m')
assert 4 == len(seq)
seq.terminal(out_multiple)
out_single = io.StringIO()
for qr in seq:
qr.terminal(out_single)
assert out_single.getvalue() == out_multiple.getvalue()
def test_boosterror_noop():
seq = segno.make_sequence('I read the news today oh boy', version=1)
assert 2 == len(seq)
assert 'L' == seq[0].error
assert 'L' == seq[1].error
def test_boosterror():
seq = segno.make_sequence('I read the news today oh boy / About a lucky man '
'who made the grade', version=2)
assert 3 == len(seq)
assert 'M' == seq[0].error
assert 'M' == seq[1].error
assert 'M' == seq[2].error
def test_boosterror2():
seq = segno.make_sequence('I read the news today oh boy / About a lucky man '
'who made the grade', symbol_count=4)
assert 4 == len(seq)
assert '2-Q' == seq[0].designator
assert '2-Q' == seq[1].designator
assert '2-Q' == seq[2].designator
assert '2-Q' == seq[3].designator
def test_toomany_symbols():
with pytest.raises(ValueError):
segno.make_sequence('ABCDEF', symbol_count=16)
@pytest.mark.parametrize('symbol_count', [0, -1, 17])
def test_illegal_symbolcount(symbol_count):
with pytest.raises(ValueError):
segno.make_sequence('I read the news today oh boy / About a lucky man '
'who made the grade',
symbol_count=symbol_count)
if __name__ == '__main__':
pytest.main([__file__])
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