def _test_write(self, hexstr, data, start_addr, write_start_addr=True):
# prepare
ih = IntelHex(None)
ih._buf = data
ih.start_addr = start_addr
# write
sio = StringIO()
self.assertTrue(ih.writefile(sio, write_start_addr))
s = sio.getvalue()
sio.close()
# check
self.assertEquals(
hexstr,
s,
"""Written data is incorrect
Should be:
%s
Written:
%s
"""
% (hexstr, s),
)
