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Feature/check barcodes (#255)

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* add a method to check barcode code format

ensure that the code to print is compatible with the ESC/POS formats and
also automatically check this format before printing (barcode() method).

* rewrite test using pytest's parametrize functionality

* add test for the 'check' argument

* update authors list
This commit is contained in:
Lucy Linder
2017-10-08 20:05:18 +02:00
committed by Patrick Kanzler
parent d78a6f1699
commit 456f5b7aa6
6 changed files with 187 additions and 12 deletions
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16
test/test_function_barcode.py
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@@ -7,7 +7,7 @@ from __future__ import unicode_literals
import escpos.printer as printer
from escpos.constants import BARCODE_TYPE_A, BARCODE_TYPE_B
from escpos.capabilities import Profile, BARCODE_B
from escpos.exceptions import BarcodeTypeError
from escpos.exceptions import BarcodeTypeError, BarcodeCodeError
import pytest
@@ -36,3 +36,17 @@ def test_lacks_support(bctype, supports_b):
instance.barcode('test', bctype)
assert instance.output == b''
@pytest.mark.parametrize("bctype,data", [
('EAN13', 'AA'),
('CODE128', '{D2354AA'),
])
def test_code_check(bctype, data):
"""should raise an error if the barcode code is invalid.
"""
instance = printer.Dummy()
with pytest.raises(BarcodeCodeError):
instance.barcode(data, bctype)
assert instance.output == b''