import pytest from helpers.cluster import ClickHouseCluster cluster = ClickHouseCluster(__file__) node1 = cluster.add_instance("node1", with_zookeeper=True) node2 = cluster.add_instance( "node2", with_zookeeper=True, image="clickhouse/clickhouse-server", tag="23.3", with_installed_binary=True, ) @pytest.fixture(scope="module") def start_cluster(): try: cluster.start() yield cluster finally: cluster.shutdown() def test_different_versions(start_cluster): assert ( node1.query( "SELECT uniqExact(x) FROM (SELECT version() as x from remote('node{1,2}', system.one))" ) == "2\n" )