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import pytest
import requests
pytest.skip('This test require remote data', allow_module_level=True)
def test_pixwin_download(monkeypatch):
"""Test that pixwin downloads and caches the file using astropy if not present locally."""
import healpy as hp
nside = 32
# Remove any local file by monkeypatching os.path.isfile to always return False
monkeypatch.setattr("os.path.isfile", lambda path: False)
pw = hp.pixwin(nside)
assert pw is not None
assert len(pw) == 3 * nside - 1 + 1
def test_pixwin_local_datapath(tmp_path):
"""Test that pixwin loads the file from a local datapath if provided."""
import healpy as hp
nside = 32
datapath = tmp_path / "pixel_window_functions"
datapath.mkdir(parents=True)
# Download the file from healpy-data repo
url = (
"https://github.com/healpy/healpy-data/"
"raw/master/pixel_window_functions/"
f"pixel_window_n{nside:04d}.fits"
)
r = requests.get(url)
local_file = datapath / f"pixel_window_n{nside:04d}.fits"
with open(local_file, "wb") as f:
f.write(r.content)
pw = hp.pixwin(nside, datapath=tmp_path)
assert pw is not None
assert len(pw) == 3 * nside - 1 + 1
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