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75 lines
2.5 KiB
Python
75 lines
2.5 KiB
Python
import re
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import pytest
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from helpers.cluster import ClickHouseCluster
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from helpers.test_tools import assert_eq_with_retry
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cluster = ClickHouseCluster(__file__)
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control_node = cluster.add_instance(
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"control_node",
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main_configs=["configs/clusters.xml"],
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with_zookeeper=True,
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)
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data_node = cluster.add_instance(
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"data_node",
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main_configs=["configs/clusters.xml"],
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with_zookeeper=True,
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macros={"shard": 1, "replica": 1},
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)
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uuid_regex = re.compile("[0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12}")
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def assert_create_query(node, database_name, table_name, expected):
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replace_uuid = lambda x: re.sub(uuid_regex, "uuid", x)
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query = "SELECT create_table_query FROM system.tables WHERE database='{}' AND table='{}'".format(
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database_name, table_name
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)
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assert_eq_with_retry(node, query, expected, get_result=replace_uuid)
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@pytest.fixture(scope="module")
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def started_cluster():
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try:
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cluster.start()
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yield cluster
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finally:
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cluster.shutdown()
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def test_ddl(started_cluster):
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control_node.query("CREATE DATABASE test_db ON CLUSTER 'external' ENGINE=Atomic")
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control_node.query(
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"CREATE TABLE test_db.test_table ON CLUSTER 'external' (id Int64) Engine=MergeTree ORDER BY id"
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)
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control_node.query(
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"ALTER TABLE test_db.test_table ON CLUSTER 'external' add column data String"
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)
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control_node.query("DETACH TABLE test_db.test_table ON CLUSTER 'external'")
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expected = ""
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assert_create_query(data_node, "test_db", "test_table", expected)
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control_node.query("ATTACH TABLE test_db.test_table ON CLUSTER 'external'")
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expected = "CREATE TABLE test_db.test_table (`id` Int64, `data` String) ENGINE = MergeTree ORDER BY id SETTINGS index_granularity = 8192"
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assert_create_query(data_node, "test_db", "test_table", expected)
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control_node.query("DROP TABLE test_db.test_table ON CLUSTER 'external'")
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control_node.query("DROP DATABASE test_db ON CLUSTER 'external'")
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expected = ""
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assert_create_query(data_node, "test_db", "test_table", expected)
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def test_ddl_replicated(started_cluster):
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control_node.query(
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"CREATE DATABASE test_db ON CLUSTER 'external' ENGINE=Replicated('/replicated')",
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)
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# Exception is expected
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assert "It's not initial query" in control_node.query_and_get_error(
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"CREATE TABLE test_db.test_table ON CLUSTER 'external' (id Int64) Engine=MergeTree ORDER BY id"
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)
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control_node.query("DROP DATABASE test_db ON CLUSTER 'external'")
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