ClickHouse/tests/integration/test_replica_can_become_leader/test.py

import pytest
from helpers.client import QueryRuntimeException
from helpers.cluster import ClickHouseCluster

cluster = ClickHouseCluster(__file__)
node1 = cluster.add_instance('node1', main_configs=['configs/notleader.xml'], with_zookeeper=True)
node2 = cluster.add_instance('node2', main_configs=['configs/notleaderignorecase.xml'], with_zookeeper=True)
node3 = cluster.add_instance('node3', with_zookeeper=True)


@pytest.fixture(scope="module")
def start_cluster():
    try:
        cluster.start()

        for i, node in enumerate((node1, node2)):
            node.query(
                '''
                CREATE TABLE test_table(date Date, id UInt32, dummy UInt32)
                ENGINE = ReplicatedMergeTree('/clickhouse/tables/test_table', '{}')
                PARTITION BY date ORDER BY id
                '''.format(i)
            )

        with pytest.raises(QueryRuntimeException):
            node3.query(
                '''
                CREATE TABLE test_table(date Date, id UInt32, dummy UInt32)
                ENGINE = ReplicatedMergeTree('/clickhouse/tables/test_table', '{}')
                PARTITION BY date ORDER BY id SETTINGS replicated_can_become_leader=0sad
                '''.format(3)
            )

        yield cluster

    finally:
        cluster.shutdown()


def test_can_become_leader(start_cluster):
    assert node1.query("select can_become_leader from system.replicas where table = 'test_table'") == '0\n'
    assert node2.query("select can_become_leader from system.replicas where table = 'test_table'") == '0\n'