How to use the georinex.crxexe function in georinex

def test_obs3_gz():

    if not gr.crxexe():
        pytest.skip(f'crx2rnx not found')

    fn = R / 'CEBR00ESP_R_20182000000_01D_30S_MO.crx.gz'

    info = gr.rinexinfo(fn)

    assert int(info['version']) == 3
# %% full file
    obs = gr.load(fn, tlim=('2018-07-19T01', '2018-07-19T01:10'))

    assert (obs.sv.values == ['C05', 'C10', 'C14', 'C22', 'C31', 'E01', 'E04', 'E09', 'E11',
                              'E19', 'E21', 'E31', 'G02', 'G05', 'G07', 'G13', 'G15', 'G21',
                              'G24', 'G28', 'G30', 'R03', 'R04', 'R05', 'R13', 'R14', 'R15',
                              'R16', 'R21', 'S20', 'S23', 'S25', 'S47', 'S48']).all()

    times = gr.to_datetime(obs.time)

def test_obs3():
    if not gr.crxexe():
        pytest.skip(f'crx2rnx not found')

    fn = R / 'P43300USA_R_20190012056_17M_15S_MO.crx'

    info = gr.rinexinfo(fn)

    assert int(info['version']) == 3
# %% full file
    obs = gr.load(fn, tlim=('2019-01-01', '2019-01-01T20:57'))

    assert (obs.sv.values == ['C08', 'C19', 'C20', 'C22', 'C32', 'C36', 'C37', 'E02', 'E03',
                              'E05', 'E08', 'E24', 'E25', 'G01', 'G03', 'G06', 'G09', 'G14',
                              'G16', 'G22', 'G23', 'G26', 'G31', 'R01', 'R02', 'R08', 'R10',
                              'R11', 'R12', 'R17', 'S31', 'S33', 'S35', 'S38']).all()

    times = gr.to_datetime(obs.time)

def test_locs():
    if not gr.crxexe():
        pytest.skip(f'crx2rnx not found')

    pytest.importorskip('pymap3d')  # need to have this
    gg = pytest.importorskip('georinex.geo')

    pat = ['*o',
           '*O.rnx', '*O.rnx.gz',
           '*O.crx', '*O.crx.gz']

    flist = gr.globber(R, pat)

    locs = gg.get_locations(flist)

    assert locs.loc['demo.10o'].values == approx([41.3887, 2.112, 30])