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 create_schema(self, check_if_exists=False, sync_schema=True,
                      verbosity=1):
        """
        Creates the schema 'schema_name' for this tenant. Optionally checks if
        the schema already exists before creating it. Returns true if the
        schema was created, false otherwise.
        """

        # safety check
        connection = connections[get_tenant_database_alias()]
        _check_schema_name(self.schema_name)
        cursor = connection.cursor()

        if check_if_exists and schema_exists(self.schema_name):
            return False

        fake_migrations = get_creation_fakes_migrations()

        if sync_schema:
            if fake_migrations:
                # copy tables and data from provided model schema
                base_schema = get_tenant_base_schema()
                clone_schema = CloneSchema()
                clone_schema.clone_schema(base_schema, self.schema_name)

                call_command('migrate_schemas',
                             tenant=True,
                             fake=True,
                             schema_name=self.schema_name,
                             interactive=False,
                             verbosity=verbosity)
            else:
                # create the schema
                cursor.execute('CREATE SCHEMA "%s"' % self.schema_name)
                call_command('migrate_schemas',
                             tenant=True,
                             schema_name=self.schema_name,
                             interactive=False,
                             verbosity=verbosity)

        connection.set_schema_to_public()