def METHOD_NAME():
    fn = "tests/testdata/test_dfs3.dfs3"
    ds = mikeio.read(fn, time="2020-12-30 00:00")
    assert ds.n_timesteps == 1
    assert isinstance(ds.geometry, Grid3D)
    ds = mikeio.read(fn, time=-1)
    assert ds.n_timesteps == 1
    assert isinstance(ds.geometry, Grid3D)