def _test_read(self, hexstr, data, start_addr):
sio = StringIO(hexstr)
ih = IntelHex(sio)
self.assert_(ih.readfile(), "readfile return error: %s" % ih.Error)
sio.close()
# test data
self.assertEqual(data, ih._buf, "Internal buffer: %r != %r" % (data, ih._buf))
self.assertEqual(start_addr, ih.start_addr, "Start address: %r != %r" % (start_addr, ih.start_addr))
