Test failures with remote_data=True #4896

================================== FAILURES ===================================
___________________ test_database_specify[ngc 3642-db_dict0] ___________________

name = 'ngc 3642'
db_dict = {'all': '# ngc3642    #Q22523722
#=S=Simbad (via url):    1
%@ 503952
%I.0 NGC 3642
%C.0 LIN
%C.N0 15.15.01.00
%J 170....V=VizieR (local):    1
%J 170.56 +59.08 = 11:22.2     +59:05
%I.0 {NGC} 3642



#====Done (2013-Feb-12,16:37:42z)===='}

    @remote_data
    @pytest.mark.parametrize(("name", "db_dict"), [('ngc 3642', _cached_ngc3642),
                                                   ('castor', _cached_castor)])
    def test_database_specify(name, db_dict):
        # First check that at least some sesame mirror is up
        for url in sesame_url.get():
            if urllib.request.urlopen(url).getcode() == 200:
                break
        else:
            pytest.skip("All SESAME mirrors appear to be down, skipping "
                        "test_name_resolve.py:test_database_specify()...")

        for db in db_dict.keys():
            with sesame_database.set(db):
                try:
                    icrs = SkyCoord.from_name(name)
                except NameResolveError:
>                   ra, dec = db_dict[db]
E                   ValueError: too many values to unpack

.../astropy/coordinates/tests/test_name_resolve.py:160: ValueError___________________ test_database_specify[ngc 3642-db_dict0] ___________________

name = 'ngc 3642'
db_dict = {'all': '# ngc3642    #Q22523722\n#=S=Simbad (via url):    1\n%@ 503952\n%I.0 NGC 3642\n%C.0 LIN\n%C.N0 15.15.01.00\n%...eR (local):    1\n%J 170.56 +59.08 = 11:22.2     +59:05\n%I.0 {NGC} 3642\n\n\n\n#====Done (2013-Feb-12,16:37:42z)===='}

    @remote_data
    @pytest.mark.parametrize(("name", "db_dict"), [('ngc 3642', _cached_ngc3642),
                                                   ('castor', _cached_castor)])
    def test_database_specify(name, db_dict):
        # First check that at least some sesame mirror is up
        for url in sesame_url.get():
            if urllib.request.urlopen(url).getcode() == 200:
                break
        else:
            pytest.skip("All SESAME mirrors appear to be down, skipping "
                        "test_name_resolve.py:test_database_specify()...")

        for db in db_dict.keys():
            with sesame_database.set(db):
                try:
                    icrs = SkyCoord.from_name(name)
                except NameResolveError:
>                   ra, dec = db_dict[db]
E                   ValueError: too many values to unpack

.../astropy/coordinates/tests/test_name_resolve.py:160: ValueError
_____________________ test_constellations_with_nameresolve _____________________

    @remote_data
    def test_constellations_with_nameresolve():
        assert SkyCoord.from_name('And I').get_constellation(short_name=True) == 'And'

        #you'd think "And ..." should be in Andromeda.  But you'd be wrong.
        assert SkyCoord.from_name('And VI').get_constellation() == 'Pegasus'

        #maybe it's because And VI isn't really a galaxy?
        assert SkyCoord.from_name('And XXII').get_constellation() == 'Pisces'
        assert SkyCoord.from_name('And XXX').get_constellation() == 'Cassiopeia'
        #ok maybe not

        #ok, but at least some of the others do make sense...
        assert SkyCoord.from_name('Coma Cluster').get_constellation(short_name=True) == 'Com'
>       assert SkyCoord.from_name('UMa II').get_constellation() == 'Ursa Major'

.../astropy/coordinates/tests/test_sky_coord.py:1162: 
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 
.../astropy/coordinates/sky_coordinate.py:1174: in from_name
    icrs_coord = get_icrs_coordinates(name)
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 

name = 'UMa II'

    def get_icrs_coordinates(name):
        """
        Retrieve an ICRS object by using an online name resolving service to
        retrieve coordinates for the specified name. By default, this will
        search all available databases until a match is found. If you would like
        to specify the database, use the science state
        ``astropy.coordinates.name_resolve.sesame_database``. You can also
        specify a list of servers to use for querying Sesame using the science
        state ``astropy.coordinates.name_resolve.sesame_url``. This will try
        each one in order until a valid response is returned. By default, this
        list includes the main Sesame host and a mirror at vizier.  The
        configuration item `astropy.utils.data.Conf.remote_timeout` controls the
        number of seconds to wait for a response from the server before giving
        up.

        Parameters
        ----------
        name : str
            The name of the object to get coordinates for, e.g. ``'M42'``.

        Returns
        -------
        coord : `astropy.coordinates.ICRS` object
            The object's coordinates in the ICRS frame.

        """

        database = sesame_database.get()
        # The web API just takes the first letter of the database name
        db = database.upper()[0]

        # Make sure we don't have duplicates in the url list
        urls = []
        domains = []
        for url in sesame_url.get():
            domain = urllib.parse.urlparse(url).netloc

            # Check for duplicates
            if domain not in domains:
                domains.append(domain)

                # Add the query to the end of the url, add to url list
                fmt_url = os.path.join(url, "{db}?{name}")
                fmt_url = fmt_url.format(name=urllib.parse.quote(name), db=db)
                urls.append(fmt_url)

        for url in urls:
            try:
                # Retrieve ascii name resolve data from CDS
                resp = urllib.request.urlopen(url, timeout=data.conf.remote_timeout)
                resp_data = resp.read()
                break
            except urllib.error.URLError as e:
                # This catches a timeout error, see:
                #   http://stackoverflow.com/questions/2712524/handling-urllib2s-timeout-python
                if isinstance(e.reason, socket.timeout):
                    # If it was a timeout, try with the next URL
                    continue
                else:
                    raise NameResolveError(
                        "Unable to retrieve coordinates for name '{0}'; "
                        "connection timed out".format(name))
            except socket.timeout:
                # There are some cases where urllib2 does not catch socket.timeout
                # especially while receiving response data on an already previously
                # working request
                raise NameResolveError(
                    "Unable to retrieve coordinates for name '{0}'; connection "
                    "timed out".format(name))

        # All Sesame URL's timed out...
        else:
            raise NameResolveError("All Sesame queries timed out. Unable to "
                                   "retrieve coordinates.")

        ra, dec = _parse_response(resp_data)

        if ra is None and dec is None:
            if db == "A":
                err = "Unable to find coordinates for name '{0}'".format(name)
            else:
                err = "Unable to find coordinates for name '{0}' in database {1}"\
                      .format(name, database)

>           raise NameResolveError(err)
E           NameResolveError: Unable to find coordinates for name 'UMa II'

.../astropy/coordinates/name_resolve.py:173: NameResolveError
___________________ TestFileFunctions.test_open_nonexistent ____________________

self = <astropy.io.fits.tests.test_core.TestFileFunctions object at 0x7f6b58687cd0>

    def test_open_nonexistent(self):
        """Test that trying to open a non-existent file results in an
            IOError (and not some other arbitrary exception).
            """

        try:
            fits.open(self.temp('foobar.fits'))
        except IOError as e:
>           assert 'No such file or directory' in str(e)
E           assert 'No such file or directory' in "[Errno 2] Datei oder Verzeichnis nicht gefunden: '/tmp/fits-test-Y2tDbp/foobar.fits'"
E            +  where "[Errno 2] Datei oder Verzeichnis nicht gefunden: '/tmp/fits-test-Y2tDbp/foobar.fits'" = str(IOError(2, 'Datei oder Verzeichnis nicht gefunden'))

.../astropy/io/fits/tests/test_core.py:598: AssertionError
======= 4 failed, 9850 passed, 73 skipped, 42 xfailed in 262.66 seconds ========
1