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#
# Copyright (c) 2016 - 2024 -- Lars Heuer
# All rights reserved.
#
# License: BSD License
#
"""\
Tests against the ``utils`` module.
"""
import pytest
from segno import utils
def test_get_border_qr():
matrix_size = 21, 21 # Version 1
border = utils.get_border(matrix_size, None)
assert 4 == border
border = utils.get_border(matrix_size, 3)
assert 3 == border
def test_get_border2():
matrix_size = 11, 11 # M1
border = utils.get_border(matrix_size, 1)
assert 1 == border
border = utils.get_border(matrix_size, None)
assert 2 == border
def test_get_border3():
matrix_size = 29, 29 # Version 3
border = utils.get_border(matrix_size, 0)
assert 0 == border
border = utils.get_border(matrix_size, None)
assert 4 == border
def test_get_symbol_size():
matrix_size = 21, 21 # QR Code version 1
border = 0
width, height = utils.get_symbol_size(matrix_size, border=border)
assert matrix_size == (width, height)
border = 4
width, height = utils.get_symbol_size(matrix_size)
assert (matrix_size[0] + 2 * border, matrix_size[1] + 2 * border) == (width, height)
def test_get_symbol_size_micro():
matrix_size = 13, 13 # M2
border = 0
width, height = utils.get_symbol_size(matrix_size, border=border)
assert matrix_size == (width, height)
border = 2
width, height = utils.get_symbol_size(matrix_size)
assert (matrix_size[0] + 2 * border, matrix_size[1] + 2 * border) == (width, height)
@pytest.mark.parametrize('scale', [1, 1.2, .8, 10])
def test_valid_scale(scale):
assert utils.check_valid_scale(scale) is None
@pytest.mark.parametrize('scale', (0.0, 0, -1, -.2, int(.8)))
def test_invalid_scale(scale):
with pytest.raises(ValueError):
utils.check_valid_scale(scale)
@pytest.mark.parametrize('border', (None, 0, 0.0, 1, 2))
def test_valid_border(border):
assert utils.check_valid_border(border) is None
@pytest.mark.parametrize('border', (.2, -1, 1.3))
def test_invalid_border(border):
with pytest.raises(ValueError):
utils.check_valid_border(border)
if __name__ == '__main__':
pytest.main([__file__])
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