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 _init_renderers(self):
        """Initializes the cell renderers"""
        # We hide the columns headers
        self.set_headers_visible(False)
        # For the backend icon
        pixbuf_cell = Gtk.CellRendererPixbuf()
        tvcolumn_pixbuf = Gtk.TreeViewColumn('Icon', pixbuf_cell)
        tvcolumn_pixbuf.add_attribute(pixbuf_cell, 'pixbuf', self.COLUMN_ICON)
        self.append_column(tvcolumn_pixbuf)
        # For the backend name
        text_cell = Gtk.CellRendererText()
        tvcolumn_text = Gtk.TreeViewColumn('Name', text_cell)
        tvcolumn_text.add_attribute(text_cell, 'markup', self.COLUMN_TEXT)
        self.append_column(tvcolumn_text)
        text_cell.connect('edited', self.cell_edited_callback)
        text_cell.set_property('editable', True)
        # For the backend tags
        tags_cell = Gtk.CellRendererText()
        tvcolumn_tags = Gtk.TreeViewColumn('Tags', tags_cell)
        tvcolumn_tags.add_attribute(tags_cell, 'markup', self.COLUMN_TAGS)
        self.append_column(tvcolumn_tags)