def METHOD_NAME():
    stream = BytesIO()
    with make_simple(stream, mode='w') as f:
        x = f.createDimension('x', 4)
        v = f.createVariable('v', 'i2', ['x'])
        v[:] = 1
        f.flush()
        len_single = len(stream.getvalue())
        f.flush()
        len_double = len(stream.getvalue())
    assert len_single == len_double