import pytest
from helpers.cluster import ClickHouseCluster
import redis

cluster = ClickHouseCluster(__file__)

node = cluster.add_instance('node', with_redis=True)

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

        N = 1000
        client = redis.Redis(host='localhost', port=cluster.redis_port, password='clickhouse', db=0)
        client.flushdb()
        for i in range(N):
            client.hset('2020-10-10', i, i)

        node.query("""
            CREATE DICTIONARY redis_dict
            (
                date String,
                id UInt64,
                value UInt64
            )
            PRIMARY KEY date, id
            SOURCE(REDIS(HOST '{}' PORT 6379 STORAGE_TYPE 'hash_map' DB_INDEX 0 PASSWORD 'clickhouse'))
            LAYOUT(COMPLEX_KEY_DIRECT())
            """.format(cluster.redis_host)
        )

        node.query("""
            CREATE TABLE redis_dictionary_test
            (
                date Date,
                id UInt64
            )
            ENGINE = MergeTree ORDER BY id"""
        )

        node.query("INSERT INTO default.redis_dictionary_test SELECT '2020-10-10', number FROM numbers(1000000)")

        yield cluster

    finally:
        cluster.shutdown()

def test_redis_dict_long(start_cluster):
    assert node.query("SELECT count(), uniqExact(date), uniqExact(id) FROM redis_dict") == "1000\t1\t1000\n"
    assert node.query("SELECT count(DISTINCT dictGet('redis_dict', 'value', tuple(date, id % 1000))) FROM redis_dictionary_test") == "1000\n"