def test_week_wrong(self):
"""construct_postscript raises ValueError if 0 < week < 54
ISO weeks must be between 1 and 53.
"""
weeks = [0, 54]
for week in weeks:
with self.subTest(week=week):
with self.assertRaisesRegex(ValueError, str(week)):
star_barcode.construct_postscript(
week=week,
bwipp_location=self.bwipp,
issn=self.issn,
sequence=21,
header_line='')
def test_missing_bwipp(self):
"""construct_postscript raises ValueError if bwipp is missing
If the location passed to construct_postscript for the location
of the bwipp postscript library does not exist, then it should
raise ValueError.
"""
seq = 21
week = 46
header = 'MSTAR 2016-11-14 MON 1.0'
with self.assertRaisesRegex(ValueError, 'BWIPP'):
star_barcode.construct_postscript(
bwipp_location=Path('/fake-path/not-here.ps'),
issn=self.issn,
sequence=seq,
week=week,
header_line=header)
def test_issn_incorrect_length(self):
"""construct_postscript raises ValueError for ISSN of incorrect length
ISSNs are either 7 or 8 digits long (8 being the optional check
digit), with a mandatory (for BWIPP) hyphen in the fifth place.
construct_postscript should raise a ValueError if the ISSN is
not of the form \d{4}-\d{3,4}.
"""
issns = ['0307-15', '0307-15789', '03071758', '0307175']
for num in issns:
with self.subTest(num=num):
with self.assertRaisesRegex(ValueError, num):
star_barcode.construct_postscript(
issn=num,
bwipp_location=self.bwipp,
sequence=21,
week=46,
header_line='')
def test_sequence_outside_range(self):
"""construct_postscript raises ValueError if sequence outside range
Sequence can be between 00 and 99. Although in our usage the
second digit is the ISO weekday, so in practice limited 01-07 and
91-97, special sequences may require the extra numbers.
Must not raise for sequences 00-09, represented by integers 0-9,
as these are valid sequences (and should be padded as such),
tested separately.
"""
seqs = [-1, 100]
for seq in seqs:
with self.subTest(seq=seq):
with self.assertRaisesRegex(ValueError, str(seq)):
star_barcode.construct_postscript(
sequence=seq,
bwipp_location=self.bwipp,
issn=self.issn,
week=46,
header_line='')
def test_week_in_range(self):
"""construct_postscript accepts week >= 1, <= 53"""
weeks = list(range(1, 54))
seq = 21
for week in weeks:
with self.subTest(week=week):
result = star_barcode.construct_postscript(
week=week,
bwipp_location=self.bwipp,
issn=self.issn,
sequence=seq,
header_line='')
self.assertGreater(
result.find(f'{self.issn} {seq:02} {week:02}'), -1)
def test_typical(self):
"""construct_postscript correctly formats typical arguments"""
seq = 21
week = 46
header = 'MSTAR 2016-11-14 MON 1.0'
issn_args = ' '.join([self.issn, str(seq), str(week)])
result = star_barcode.construct_postscript(bwipp_location=self.bwipp,
issn=self.issn,
sequence=seq,
week=week,
header_line=header)
self.assertGreater(result.find(str(self.bwipp)), -1)
self.assertGreater(result.find(issn_args), -1)
self.assertGreater(result.find(header), -1)
def test_sequence_0_to_9(self):
"""construct_postscript must not raise for sequences 00-09
As all possible sequences run 00-99, they can be adequately
represented by an integer rather than a string. But the
construct_postscript function must not raise for integers
0-9, even though as (unformatted) strings they are of length 1.
"""
seqs = list(range(10))
for seq in seqs:
with self.subTest(seq=seq):
result = star_barcode.construct_postscript(
sequence=seq,
bwipp_location=self.bwipp,
issn=self.issn,
week=20,
header_line='')
self.assertGreater(result.find(f'{self.issn} {seq:02}'), -1)
def test_sequence_specials(self):
"""construct_postscript must not raise for special sequences
While the paper only uses sequences 01-07 through 91-97, the
missing numbers are valid (00, 08, 09 … 90, 98, 99) and should
be accepted by construct_postscript.
"""
special_digits = [0, 8, 9]
for t in range(0, 10):
for special in special_digits:
seq = t * 10 + special
with self.subTest(seq=seq):
result = star_barcode.construct_postscript(
sequence=seq,
bwipp_location=self.bwipp,
issn=self.issn,
week=20,
header_line='')
self.assertGreater(result.find(f'{self.issn} {seq:02}'), -1)