"""Base classes for Y! Search Services"""import unittestimport yahoo.search__revision__ = "$Id: searchbase.py,v 1.4 2007/02/28 05:20:08 zwoop Exp $"__version__ = "$Revision: 1.4 $"__author__ = "Leif Hedstrom <leif@ogre.com>"__date__ = "Thu Oct 12 15:59:04 MDT 2006"## These are "shared" tests, across all the services#class SearchServiceTest(object):    """Base class for our Unit tests."""    SERVICE = None    NUM_PARAMS = 999    TEST_QUERY = "Yahoo"    EXPECTED_RESULTS = -1    def setUp(self):        """Setup the search test system for Unit tests."""        self.srch = self.SERVICE('YahooDemo')    # First some very basic tests    def testInstantiation(self):        """Instantiate a search object (%s)""" % self.SERVICE        self.assertNotEqual(self.srch, None)    def testValidParams(self):        """Verify that allowed parameters are correct (%s)""" % self.SERVICE        params = self.srch.get_valid_params()        self.assertEqual(len(params), self.NUM_PARAMS)        for param in self.srch._valid_params.values():            self.assertEqual(len(param), 6)        self.assertNotEqual(len(self.srch.missing_params()), 0)    def testQueryParam(self):        """Verify that the query parameter is accepted (%s)""" % self.SERVICE        self.srch.query = self.TEST_QUERY        self.assertEqual(self.srch.query, self.TEST_QUERY)    def testUnknownParam(self):        """An exception must be raised on bad parameters (%s)""" % self.SERVICE        self.assertRaises(yahoo.search.ParameterError, self.srch.set_param,                          "FooBar", "Fum")    # Now test a simple query, this will be overriden where appropriate    def testSimpleQuery(self):        """Test one simple query and the XML result (%s)""" % self.SERVICE        import xml.dom.minidom        self.srch.query = self.TEST_QUERY        dom = self.srch.get_results()        self.assertTrue(isinstance(dom, xml.dom.minidom.Document))        res = self.srch.parse_results(dom)        self.assertFalse(res.total_results_available == 0)        self.assertTrue(res.first_result_position > 0)        if self.EXPECTED_RESULTS > -1:            self.assertTrue(res.total_results_available == self.EXPECTED_RESULTS)        self.srch.output = "json"        json = self.srch.get_results()        self.assertTrue(len(json) > 0)        self.srch.output = "php"        json = self.srch.get_results()        self.assertTrue(len(json) > 0)        self.srch.output = "xml"    def testProperties(self):        """Test that various class properties work (%s)""" % self.SERVICE        self.assertEqual(self.srch.appid, 'YahooDemo')        self.assertEqual(self.srch.app_id, 'YahooDemo')