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add a method to check barcode code format

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ensure that the code to print is compatible with the ESC/POS formats and
also automatically check this format before printing (barcode() method).
This commit is contained in:
Lucy Linder
2017-08-31 10:39:38 +02:00
parent 19663ec574
commit 36195674c1
4 changed files with 339 additions and 11 deletions
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272
test/test_function_check_barcode.py Normal file
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#!/usr/bin/python
from __future__ import absolute_import
from __future__ import division
from __future__ import print_function
from __future__ import unicode_literals
import escpos.printer as printer
import pytest
def test_barcode_upca():
bc = 'UPC-A'
valid_codes = [
"01234567890",
"012345678905"
]
invalid_codes = [
"01234567890123", # too long
"0123456789", # too short
"72527273-711", # invalid '-'
"A12345678901", # invalid 'A'
]
assert (all([printer.Escpos.check_barcode(bc, code) for code in valid_codes]))
assert (not any([printer.Escpos.check_barcode(bc, code) for code in invalid_codes]))
def test_barcode_upce():
bc = 'UPC-E'
valid_codes = [
"01234567",
"0123456",
"012345678905"
]
invalid_codes = [
"01234567890123", # too long
"012345", # too short
"72527-2", # invalid '-'
"A123456", # invalid 'A'
]
assert (all([printer.Escpos.check_barcode(bc, code) for code in valid_codes]))
assert (not any([printer.Escpos.check_barcode(bc, code) for code in invalid_codes]))
def test_barcode_ean13():
bc = 'EAN13'
valid_codes = [
"0123456789012",
"012345678901"
]
invalid_codes = [
"0123456789", # too short
"A123456789012" # invalid 'A'
"012345678901234", # too long
]
assert (all([printer.Escpos.check_barcode(bc, code) for code in valid_codes]))
assert (not any([printer.Escpos.check_barcode(bc, code) for code in invalid_codes]))
def test_barcode_ean8():
bc = 'EAN8'
valid_codes = [
"01234567",
"0123456"
]
invalid_codes = [
"012345", # too short
"A123456789012" # invalid 'A'
"012345678901234", # too long
]
assert (all([printer.Escpos.check_barcode(bc, code) for code in valid_codes]))
assert (not any([printer.Escpos.check_barcode(bc, code) for code in invalid_codes]))
def test_barcode_code39():
bc = 'CODE39'
valid_codes = [
"ABC-1234",
"ABC-1234-$$-+A",
"*WIKIPEDIA*" # the '*' symbol is not part of the actual code, but it is handled properly by ESCPOS
]
invalid_codes = [
"ALKJ_34", # invalid '_'
"A" * 256, # too long
]
assert (all([printer.Escpos.check_barcode(bc, code) for code in valid_codes]))
assert (not any([printer.Escpos.check_barcode(bc, code) for code in invalid_codes]))
def test_barcode_itf():
bc = 'ITF'
valid_codes = [
"010203040506070809",
"11221133113344556677889900",
]
invalid_codes = [
"010203040", # odd length
"0" * 256, # too long
"AB01", # invalid 'A'
]
assert (all([printer.Escpos.check_barcode(bc, code) for code in valid_codes]))
assert (not any([printer.Escpos.check_barcode(bc, code) for code in invalid_codes]))
def test_barcode_codabar():
bc = 'CODABAR'
valid_codes = [
"A2030405060B",
"C11221133113344556677889900D",
"D0D",
]
invalid_codes = [
"010203040", # no start/stop
"0" * 256, # too long
"AB-01F", # invalid 'B'
]
assert (all([printer.Escpos.check_barcode(bc, code) for code in valid_codes]))
assert (not any([printer.Escpos.check_barcode(bc, code) for code in invalid_codes]))
def test_barcode_nw7():
bc = 'NW7' # same as CODABAR
valid_codes = [
"A2030405060B",
"C11221133113344556677889900D",
"D0D",
]
invalid_codes = [
"010203040", # no start/stop
"0" * 256, # too long
"AB-01F", # invalid 'B'
]
assert (all([printer.Escpos.check_barcode(bc, code) for code in valid_codes]))
assert (not any([printer.Escpos.check_barcode(bc, code) for code in invalid_codes]))
def test_barcode_code93():
bc = 'CODE93'
valid_codes = [
"A2030405060B",
"+:$&23-7@$",
"D0D",
]
invalid_codes = [
"é010203040", # invalid 'é'
"0" * 256, # too long
]
assert (all([printer.Escpos.check_barcode(bc, code) for code in valid_codes]))
assert (not any([printer.Escpos.check_barcode(bc, code) for code in invalid_codes]))
def test_barcode_code128():
bc = 'CODE128'
valid_codes = [
"{A2030405060B",
"{C+:$&23-7@$",
"{B0D",
]
invalid_codes = [
"010203040", # missing leading {
"0" * 256, # too long
"{D2354AA", # second char not between A-C
]
assert (all([printer.Escpos.check_barcode(bc, code) for code in valid_codes]))
assert (not any([printer.Escpos.check_barcode(bc, code) for code in invalid_codes]))
def test_barcode_gs1_128():
bc = 'GS1-128' # same as code 128
valid_codes = [
"{A2030405060B",
"{C+:$&23-7@$",
"{B0D",
]
invalid_codes = [
"010203040", # missing leading {
"0" * 256, # too long
"{D2354AA", # second char not between A-C
]
assert (all([printer.Escpos.check_barcode(bc, code) for code in valid_codes]))
assert (not any([printer.Escpos.check_barcode(bc, code) for code in invalid_codes]))
def test_barcode_gs1_omni():
bc = 'GS1 DATABAR OMNIDIRECTIONAL'
valid_codes = [
"0123456789123",
]
invalid_codes = [
"01234567891234", # too long
"012345678912", # too short
"012345678A1234", # invalid 'A'
]
assert (all([printer.Escpos.check_barcode(bc, code) for code in valid_codes]))
assert (not any([printer.Escpos.check_barcode(bc, code) for code in invalid_codes]))
def test_barcode_gs1_trunc():
bc = 'GS1 DATABAR TRUNCATED' # same as OMNIDIRECTIONAL
valid_codes = [
"0123456789123",
]
invalid_codes = [
"01234567891234", # too long
"012345678912", # too short
"012345678A1234", # invalid 'A'
]
assert (all([printer.Escpos.check_barcode(bc, code) for code in valid_codes]))
assert (not any([printer.Escpos.check_barcode(bc, code) for code in invalid_codes]))
def test_barcode_gs1_limited():
bc = 'GS1 DATABAR LIMITED'
valid_codes = [
"0123456789123",
"0123456789123",
]
invalid_codes = [
"01234567891234", # too long
"012345678912", # too short
"012345678A1234", # invalid 'A'
"02345678912341", # invalid start (should be 01)
]
assert (all([printer.Escpos.check_barcode(bc, code) for code in valid_codes]))
assert (not any([printer.Escpos.check_barcode(bc, code) for code in invalid_codes]))
def test_barcode_gs1_expanded():
bc = 'GS1 DATABAR EXPANDED'
valid_codes = [
"(9A{A20304+-%&06a0B",
"(1 {C+:$a23-7%",
"(00000001234567678",
]
invalid_codes = [
"010203040", # missing leading {
"0" * 256, # too long
"0{D2354AA", # second char not between A-za-z0-9
"IT will fail", # first char not between 0-9
]
assert (all([printer.Escpos.check_barcode(bc, code) for code in valid_codes]))
assert (not any([printer.Escpos.check_barcode(bc, code) for code in invalid_codes]))