How to use the georinex.gettime function in georinex

def test_one_sv():
    obs = gr.load(R / 'rinex2onesat.10o')

    assert len(obs.sv) == 1
    assert obs.sv.item() == 'G13'

    times = gr.to_datetime(gr.gettime(R/'rinex2onesat.10o'))

    assert (times == [datetime(2010, 3, 5, 0, 0), datetime(2010, 3, 5, 0, 0, 30)]).all()

    assert obs.fast_processing

def test_blank_times(filename):
    times = gr.gettime(R/filename)
    assert times.size == 0

def test_zip():
    fn = R/'ABMF00GLP_R_20181330000_01D_30S_MO.zip'
    obs = gr.load(fn)

    assert (obs.sv.values == ['E04', 'E09', 'E12', 'E24', 'G02', 'G05', 'G06', 'G07', 'G09', 'G12', 'G13',
                              'G17', 'G19', 'G25', 'G30', 'R01', 'R02', 'R08', 'R22', 'R23', 'R24', 'S20',
                              'S31', 'S35', 'S38']).all()

    times = gr.gettime(fn)
    assert (times == [datetime(2018, 5, 13, 1, 30), datetime(2018, 5, 13, 1, 30, 30),  datetime(2018, 5, 13, 1, 31)]).all()

    hdr = gr.rinexheader(fn)
    assert hdr['t0'] <= times[0]

def test_time():
    times = gr.gettime(R/'VILL00ESP_R_20181700000_01D_MN.rnx.gz')

    assert times[0] == datetime(2018, 4, 24, 8)
    assert times[-1] == datetime(2018, 6, 20, 22)

def test_time():
    times = gr.gettime(R/'ab422100.18n')

    assert times[0] == datetime(2018, 7, 29, 1, 59, 44)
    assert times[-1] == datetime(2018, 7, 30)

def test_obs(rinex_version):
    fn = R / f'minimal{rinex_version}.10o'
    txt = fn.read_text()

    with io.StringIO(txt) as f:
        info = gr.rinexinfo(f)
        assert info['rinextype'] == 'obs'

        times = gr.gettime(f)
        obs = gr.load(f)

    assert times == datetime(2010, 3, 5, 0, 0, 30)

    assert obs.equals(gr.load(fn)), 'StringIO not matching direct file read'

def eachfile(fn: Path, verbose: bool = False):
    try:
        times = gr.gettime(fn)
    except Exception as e:
        if verbose:
            print(f'{fn.name}: {e}')
        return

# %% output
    Ntimes = times.size

    if Ntimes == 0:
        return

    ostr = (f"{fn.name}:"
            f" {times[0].isoformat()}"
            f" {times[-1].isoformat()}"
            f" {Ntimes}")