def execute(self):
with open(self._input_file, 'rb') as png_file:
with open(self._output_file, 'wb') as data_file:
pixels = read_pixels_from_png(png_file)
write_data_to_file(convert_pixels_to_bytes(pixels), data_file)
def execute(self):
with open(self._input_file, 'rb') as png_file:
with open(self._output_file, 'wb') as data_file:
pixels = read_pixels_from_png(png_file)
write_data_to_file(convert_pixels_to_bytes(pixels), data_file)
def test_write_data_produces_expected_output():
data = bytearray.fromhex('ffffe3990012')
file = io.BytesIO()
write_data_to_file(data, file)
assert file.getvalue() == data