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Ensure QR codes have a border large enough (#235)

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*  Ensure QR codes have a border large enough
(The QR code spec requires a border at least 4*box_size thick but we can't
 just set border=16 because that results in a QR code more than 255px tall
 and I'm not yet ready to use fullimage() as a backend for it)
This fix was originally commited by Stephan Sokolow on 2014-05-22
* Let the user print stuff using qr example
* fix tests
This commit is contained in:
Romain Porte
2017-07-24 15:04:54 +02:00
committed by Patrick Kanzler
parent 89dfb6cf86
commit 5bd6dcf471
3 changed files with 26 additions and 2 deletions
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6
test/test_function_qr_native.py
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@@ -86,9 +86,11 @@ def test_image():
instance = printer.Dummy()
instance.qr("1", native=False, size=1)
print(instance.output)
expected = b'\x1dv0\x00\x03\x00\x17\x00\x00\x00\x00\x7f]\xfcA\x19\x04]it]et' \
expected = b'\x1bt\x00\n' \
b'\x1dv0\x00\x03\x00\x17\x00\x00\x00\x00\x7f]\xfcA\x19\x04]it]et' \
b']ItA=\x04\x7fU\xfc\x00\x0c\x00y~t4\x7f =\xa84j\xd9\xf0\x05\xd4\x90\x00' \
b'i(\x7f<\xa8A \xd8]\'\xc4]y\xf8]E\x80Ar\x94\x7fR@\x00\x00\x00'
b'i(\x7f<\xa8A \xd8]\'\xc4]y\xf8]E\x80Ar\x94\x7fR@\x00\x00\x00' \
b'\n\n'
assert(instance.output == expected)