def deploy_service_registry_and_set_urls(
    private_keys, web3, contract_manager, service_registry_address
) -> Tuple[ServiceRegistry, List[str]]:
    urls = ["http://foo", "http://boo", "http://coo"]
    c1_client = JSONRPCClient(web3, private_keys[0])
    c1_service_proxy = ServiceRegistry(
        jsonrpc_client=c1_client,
        service_registry_address=service_registry_address,
        contract_manager=contract_manager,
    )
    c2_client = JSONRPCClient(web3, private_keys[1])
    c2_service_proxy = ServiceRegistry(
        jsonrpc_client=c2_client,
        service_registry_address=service_registry_address,
        contract_manager=contract_manager,
    )
    c3_client = JSONRPCClient(web3, private_keys[2])
    c3_service_proxy = ServiceRegistry(
        jsonrpc_client=c3_client,
        service_registry_address=service_registry_address,
        contract_manager=contract_manager,
    )

    # Test that getting a random service for an empty registry returns None
    pfs_address = get_random_service(c1_service_proxy, "latest")
    assert pfs_address is None

    # Test that setting the urls works
    c1_service_proxy.set_url(urls[0])
    c2_service_proxy.set_url(urls[1])
    c3_service_proxy.set_url(urls[2])

    return c1_service_proxy, urls
def test_get_volume_attachment(self):
        """Test getting volume attachments

        Attach a volume to a server, and then retrieve volume's attachments
        info.
        """
        # Create a server
        server = self.create_server()
        # Verify that a volume's attachment information is retrieved
        self.volumes_client.attach_volume(self.volume['id'],
                                          instance_uuid=server['id'],
                                          mountpoint='/dev/%s' %
                                          CONF.compute.volume_device_name)
        waiters.wait_for_volume_resource_status(self.volumes_client,
                                                self.volume['id'],
                                                'in-use')
        self.addCleanup(waiters.wait_for_volume_resource_status,
                        self.volumes_client,
                        self.volume['id'], 'available')
        self.addCleanup(self.volumes_client.detach_volume, self.volume['id'])
        volume = self.volumes_client.show_volume(self.volume['id'])['volume']
        attachment = volume['attachments'][0]

        self.assertEqual('/dev/%s' %
                         CONF.compute.volume_device_name,
                         attachment['device'])
        self.assertEqual(server['id'], attachment['server_id'])
        self.assertEqual(self.volume['id'], attachment['id'])
        self.assertEqual(self.volume['id'], attachment['volume_id'])