def METHOD_NAME(fieldset, mode):
    lons = [0.0, 0.1, 0.25, 0.44]
    lats = [0.0, 0.0, 0.0, 0.0]
    # Distance in meters R_earth*0.2 degrees
    interaction_distance = 6371000*0.2*np.pi/180
    pset = ParticleSet(fieldset, pclass=ptype[mode], lon=lons, lat=lats,
                       interaction_distance=interaction_distance)
    pset.execute(DoNothing, pyfunc_inter=DummyMoveNeighbor, endtime=1., dt=1.)
    assert np.allclose(pset.lat, [0.1, 0.2, 0.1, 0.0], rtol=1e-5)