old_contents: import pytest
  from astropy import units as u
  
  from ..core import SvoFps
  
  
  @pytest.mark.remote_data
  class TestSvoFpsClass:
  
      def test_get_filter_index(self):
          table = SvoFps.get_filter_index(12_000*u.angstrom, 12_100*u.angstrom)
          # Check if column for Filter ID (named 'filterID') exists in table
          assert 'filterID' in table.colnames
  
      @pytest.mark.parametrize('test_filter_id',
                              ['HST/NICMOS1.F113N', 'HST/WFPC2-pc.f218w'])
      def test_get_transmission_data(self, test_filter_id):
          table = SvoFps.get_transmission_data(test_filter_id)
          # Check if data is downloaded properly, with > 0 rows
          assert len(table) > 0
  
      @pytest.mark.parametrize('test_facility, test_instrument',
                              [('HST', 'WFPC2'), ('Keck', None)])
      def test_get_filter_list(self, test_facility, test_instrument):
          table = SvoFps.get_filter_list(test_facility, test_instrument)
          # Check if column for Filter ID (named 'filterID') exists in table
          assert 'filterID' in table.colnames
  
new_contents: from io import BytesIO
  
  import pytest
  from astropy import units as u
  from astropy.io.votable import parse
  
  from astroquery.svo_fps import conf, SvoFps
  from astroquery.svo_fps.core import QUERY_PARAMETERS
  
  
  @pytest.mark.remote_data
  class TestSvoFpsClass:
  
      def test_get_filter_index(self):
          table = SvoFps.get_filter_index(12_000*u.angstrom, 12_100*u.angstrom)
          # Check if column for Filter ID (named 'filterID') exists in table
          assert 'filterID' in table.colnames
  
      @pytest.mark.parametrize('test_filter_id',
                              ['HST/NICMOS1.F113N', 'HST/WFPC2-pc.f218w'])
      def test_get_transmission_data(self, test_filter_id):
          table = SvoFps.get_transmission_data(test_filter_id)
          # Check if data is downloaded properly, with > 0 rows
          assert len(table) > 0
  
      @pytest.mark.parametrize('test_facility, test_instrument',
                              [('HST', 'WFPC2'), ('Keck', None)])
      def test_get_filter_list(self, test_facility, test_instrument):
          table = SvoFps.get_filter_list(test_facility, test_instrument)
          # Check if column for Filter ID (named 'filterID') exists in table
          assert 'filterID' in table.colnames
  
      def test_query_parameter_names(self):
          # Checks if `QUERY_PARAMETERS` is up to date.
          query = {"FORMAT": "metadata"}
          response = BytesIO(
              SvoFps._request(
                  "GET", conf.base_url, params=query, timeout=conf.timeout, cache=False
              ).content
          )
          params = {p.name.split(":")[1] for p in parse(response).resources[0].params}
          # All valid parameters should be present in `QUERY_PARAMETERS`.
          assert not params.difference(QUERY_PARAMETERS)
          # Some valid parameter names are not in `params`.
          for p in QUERY_PARAMETERS.difference(params):
              # `QUERY_PARAMETERS` also contains names without "_min" or "_max" ending
              # because "Param_min=a&Param_max=b" can be replaced with "Param=a/b".
              if p + "_min" not in params:
                  # There's a few extra parameters we didn't get from the server.
                  assert p in {"VERB", "FORMAT", "PhotCalID", "ID"}
  
subject: Add a test for `svo_fps` query parameter names