import pytest import os from helpers.cluster import ClickHouseCluster from helpers.test_tools import TSV, assert_eq_with_retry SCRIPT_DIR = os.path.dirname(os.path.realpath(__file__)) DICTIONARY_FILES = ['configs/dictionaries/cache.xml'] cluster = ClickHouseCluster(__file__, base_configs_dir=os.path.join(SCRIPT_DIR, 'configs')) instance = cluster.add_instance('instance', main_configs=DICTIONARY_FILES) @pytest.fixture(scope="module") def started_cluster(): try: cluster.start() instance.query(''' CREATE DATABASE IF NOT EXISTS test; DROP TABLE IF EXISTS test.source; CREATE TABLE test.source (id UInt64, key0 UInt8, key0_str String, key1 UInt8, StartDate Date, EndDate Date, UInt8_ UInt8, UInt16_ UInt16, UInt32_ UInt32, UInt64_ UInt64, Int8_ Int8, Int16_ Int16, Int32_ Int32, Int64_ Int64, Float32_ Float32, Float64_ Float64, String_ String, Date_ Date, DateTime_ DateTime, Parent UInt64) ENGINE=Log; ''') yield cluster finally: cluster.shutdown() def test_null_value(started_cluster): query = instance.query assert query("select dictGetUInt8('cache', 'UInt8_', toUInt64(12121212))") == "1\n" assert query("select dictGetString('cache', 'String_', toUInt64(12121212))") == "implicit-default\n" assert query("select dictGetDate('cache', 'Date_', toUInt64(12121212))") == "2015-11-25\n" # Check, that empty null_value interprets as default value assert query("select dictGetUInt64('cache', 'UInt64_', toUInt64(12121212))") == "0\n" assert query("select toTimeZone(dictGetDateTime('cache', 'DateTime_', toUInt64(12121212)), 'UTC')") == "1970-01-01 00:00:00\n"