def test_write_frame(self):
args = mock()
expect(args.buffer).returns('hello')
frame = MethodFrame(42, 5, 6, args)
buf = bytearray()
frame.write_frame(buf)
reader = Reader(buf)
assert_equals(1, reader.read_octet())
assert_equals(42, reader.read_short())
size = reader.read_long()
start_pos = reader.tell()
assert_equals(5, reader.read_short())
assert_equals(6, reader.read_short())
args_pos = reader.tell()
assert_equals('hello', reader.read(size - (args_pos - start_pos)))
assert_equals(0xce, reader.read_octet())
