def METHOD_NAME(self):
    """Test ``fix_metadata`` for ocean variables."""
    cell_area = Cube(np.random.rand(2, 2), standard_name='cell_area')
    cubes = self.fix.fix_metadata(CubeList([self.cube, cell_area]))
    self.assertEqual(len(cubes), 1)
    cube = cubes[0]
    self.assertEqual(cube.var_name, 'tos')
    self.assertEqual(cube.coord('latitude').var_name, 'lat')
    self.assertEqual(cube.coord('longitude').var_name, 'lon')