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='yandex/clickhouse-server:19.1.14', 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"