human
What is a the Python program you requested given the following:
Complete the below
@remote_data
def test_data_noastropy_fallback(monkeypatch):

    ''''Tests to make sure the default behavior when the cache directory can\'t
    be located is correct'
    '''
assistant
#Here is the Python program you requested.
    from .. import data
    from ...config import paths
    lockdir = os.path.join(_get_download_cache_locs()[0], u'lock')
    data.conf.delete_temporary_downloads_at_exit = True
    monkeypatch.setenv(str(u'XDG_CONFIG_HOME'), u'foo')
    monkeypatch.delenv(str(u'XDG_CONFIG_HOME'))
    monkeypatch.setenv(str(u'XDG_CACHE_HOME'), u'bar')
    monkeypatch.delenv(str(u'XDG_CACHE_HOME'))
    monkeypatch.setattr(paths.set_temp_config, u'_temp_path', None)
    monkeypatch.setattr(paths.set_temp_cache, u'_temp_path', None)
    def osraiser(dirnm, linkto):
        raise OSError
    monkeypatch.setattr(paths, u'_find_or_create_astropy_dir', osraiser)
    with pytest.raises(OSError):
        paths.get_cache_dir()
    with catch_warnings(CacheMissingWarning) as w:
        fnout = data.download_file(TESTURL, cache=True)
    assert os.path.isfile(fnout)
    assert (len(w) > 1)
    w1 = w.pop(0)
    w2 = w.pop(0)
    assert (w1.category == CacheMissingWarning)
    assert (u'Remote    data    cache    could    not    be    accessed' in w1.message.args[0])
    assert (w2.category == CacheMissingWarning)
    assert (u'File    downloaded    to    temporary    location' in w2.message.args[0])
    assert (fnout == w2.message.args[1])
    with catch_warnings(CacheMissingWarning) as w:
        data.clear_download_cache(TESTURL)
    assert os.path.isfile(fnout)
    data._deltemps()
    assert (not os.path.isfile(fnout))
    assert (len(w) > 0)
    w3 = w.pop()
    assert (w3.category == data.CacheMissingWarning)
    assert (u'Not    clearing    data    cache    -    cache    inacessable' in str(w3.message))
    with catch_warnings(CacheMissingWarning) as w:
        fnnocache = data.download_file(TESTURL, cache=False)
    with open(fnnocache, u'rb') as page:
        assert (page.read().decode(u'utf-8').find(u'Astropy') > (-1))
    assert (len(w) == 0)
    assert (not os.path.isdir(lockdir)), u'Cache    dir    lock    was    not    released!'