'Call ``PUT /regions/{region_id}`` w/o an ID in the request body.'

def test_create_region_with_id(self):

    ref = unit.new_region_ref()
    region_id = ref.pop('id')
    r = self.put(('/regions/%s' % region_id), body={'region': ref}, expected_status=http_client.CREATED)
    self.assertValidRegionResponse(r, ref)
    self.assertEqual(region_id, r.json['region']['id'])
