Sporadic test failures in `test_name_resolve_cache`

Description

I am seeing inconsistent failures in the above test when get_icrs_coordinates is not using the expected URL:

    @pytest.mark.remote_data
    def test_name_resolve_cache(tmpdir):
        from astropy.utils.data import get_cached_urls
    
        target_name = "castor"
    
        temp_cache_dir = str(tmpdir.mkdir('cache'))
        with paths.set_temp_cache(temp_cache_dir, delete=True):
            assert len(get_cached_urls()) == 0
    
            icrs1 = get_icrs_coordinates(target_name, cache=True)
    
            urls = get_cached_urls()
            assert len(urls) == 1
>           assert 'http://cdsweb.u-strasbg.fr/cgi-bin/nph-sesame/' in urls[0]
E           AssertionError: assert 'http://cdsweb.u-strasbg.fr/cgi-bin/nph-sesame/' in 'http://vizier.cfa.harvard.edu/viz-bin/nph-sesame/A?castor'

/opt/lib/python3.9/site-packages/astropy/coordinates/tests/test_name_resolve.py:158: AssertionError

Apparently the function is somewhat randomly using the Vizier instead of the CDS mirror (this is from a European domain).

System Details

macOS-10.14.6-x86_64-i386-64bit Python 3.9.5 (default, May 14 2021, 02:39:23) [Clang 11.0.0 (clang-1100.0.33.17)] Numpy 1.21.0rc2 astropy 4.3rc1 Scipy 1.6.3 Matplotlib 3.3.3

[nstarman]

is there a generic kind of “assert_or” that would do … for any length of sesame_url?

import operator
any(map(operator.contains, urls, sesame_url))

Wait. That almost works. Also need an itertools ~permute~ product.

Edit: Here’s something that works for any length urls and sesame_url, exploring all permutations

import operator
import itertools

urls = ["aa", "bb"]
sesame_url = ["ac", "ca"]

mixed = tuple(itertools.product(urls, sesame_url)) 
any(map(operator.contains, (elt[0] for elt in mixed), (elt[1] for elt in mixed)))

[pllim]

Does #11871 work for you?

p.s. I am unable to tag @nstarman as a reviewer, so FYI here. Thanks!