'Verifies that the input sort parameter are modified.'

def test_get_sort_params_params_modified(self):

    params = {'sort': 'key1:dir1,key2:dir2,key3:dir3'}
    common.get_sort_params(params)
    self.assertEqual({}, params)
    params = {'sort_key': 'key1', 'sort_dir': 'dir1'}
    common.get_sort_params(params)
    self.assertEqual({}, params)
