def fake_frames(seq_name, field_name, value_seq):
    """ Make fake frames for multiframe testing

    Parameters
    ----------
    seq_name : str
        name of sequence
    field_name : str
        name of field within sequence
    value_seq : length N sequence
        sequence of values

    Returns
    -------
    frame_seq : length N list
        each element in list is obj.<seq_name>[0].<field_name> =
        value_seq[n] for n in range(N)
    """
    class Fake(object):
        pass
    frames = []
    for value in value_seq:
        fake_frame = Fake()
        fake_element = Fake()
        setattr(fake_element, field_name, value)
        setattr(fake_frame, seq_name, [fake_element])
        frames.append(fake_frame)
    return frames