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test add test for image-splitting-method

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Patrick Kanzler 2016-08-07 14:39:58 +02:00
parent 603b34cadb
commit 59dccd79da
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1 changed files with 14 additions and 0 deletions
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test/test_image.py
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@ -43,6 +43,20 @@ def test_image_white():
_load_and_check_img('canvas_white.' + img_format, 1, 1, b'\x00', [b'\x00']) _load_and_check_img('canvas_white.' + img_format, 1, 1, b'\x00', [b'\x00'])
def test_split():
"""
test whether the split-function works as expected
"""
im = EscposImage('test/resources/black_white.png')
(upper_part, lower_part) = im.split(1)
upper_part = EscposImage(upper_part)
lower_part = EscposImage(lower_part)
assert(upper_part.width == lower_part.width == 2)
assert(upper_part.height == lower_part.height == 1)
assert(upper_part.to_raster_format() == b'\xc0')
assert(lower_part.to_raster_format() == b'\x00')
def _load_and_check_img(filename, width_expected, height_expected, raster_format_expected, column_format_expected): def _load_and_check_img(filename, width_expected, height_expected, raster_format_expected, column_format_expected):
""" """
Load an image, and test whether raster & column formatted output, sizes, etc match expectations. Load an image, and test whether raster & column formatted output, sizes, etc match expectations.