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5bd8e2363a
This will help to keep us from using deprecated Python features going forward. Signed-off-by: Tristan Partin <tristan@neon.tech>
111 lines
3.8 KiB
Python
111 lines
3.8 KiB
Python
from __future__ import annotations
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import os
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import pathlib
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import pytest
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from fixtures.log_helper import log
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from fixtures.neon_fixtures import NeonEnv, check_restored_datadir_content
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from fixtures.pg_version import PgVersion
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from fixtures.utils import query_scalar
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#
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# Test CREATE DATABASE when there have been relmapper changes
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#
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@pytest.mark.parametrize("strategy", ["file_copy", "wal_log"])
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def test_createdb(neon_simple_env: NeonEnv, strategy: str):
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env = neon_simple_env
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if env.pg_version == PgVersion.V14 and strategy == "wal_log":
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pytest.skip("wal_log strategy not supported on PostgreSQL 14")
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endpoint = env.endpoints.create_start("main")
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with endpoint.cursor() as cur:
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# Cause a 'relmapper' change in the original branch
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cur.execute("VACUUM FULL pg_class")
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if env.pg_version == PgVersion.V14:
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cur.execute("CREATE DATABASE foodb")
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else:
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cur.execute(f"CREATE DATABASE foodb STRATEGY={strategy}")
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lsn = query_scalar(cur, "SELECT pg_current_wal_insert_lsn()")
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# Create a branch
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env.create_branch("test_createdb2", ancestor_branch_name="main", ancestor_start_lsn=lsn)
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endpoint2 = env.endpoints.create_start("test_createdb2")
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# Test that you can connect to the new database on both branches
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for db in (endpoint, endpoint2):
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with db.cursor(dbname="foodb") as cur:
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# Check database size in both branches
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cur.execute(
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"""
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select pg_size_pretty(pg_database_size('foodb')),
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pg_size_pretty(
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sum(pg_relation_size(oid, 'main'))
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+sum(pg_relation_size(oid, 'vm'))
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+sum(pg_relation_size(oid, 'fsm'))
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) FROM pg_class where relisshared is false
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"""
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)
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res = cur.fetchone()
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assert res is not None
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# check that dbsize equals sum of all relation sizes, excluding shared ones
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# This is how we define dbsize in neon for now
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assert res[0] == res[1]
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#
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# Test DROP DATABASE
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#
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def test_dropdb(neon_simple_env: NeonEnv, test_output_dir):
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env = neon_simple_env
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endpoint = env.endpoints.create_start("main")
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with endpoint.cursor() as cur:
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cur.execute("CREATE DATABASE foodb")
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lsn_before_drop = query_scalar(cur, "SELECT pg_current_wal_insert_lsn()")
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dboid = query_scalar(cur, "SELECT oid FROM pg_database WHERE datname='foodb';")
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with endpoint.cursor() as cur:
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cur.execute("DROP DATABASE foodb")
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cur.execute("CHECKPOINT")
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lsn_after_drop = query_scalar(cur, "SELECT pg_current_wal_insert_lsn()")
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# Create two branches before and after database drop.
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env.create_branch(
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"test_before_dropdb", ancestor_branch_name="main", ancestor_start_lsn=lsn_before_drop
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)
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endpoint_before = env.endpoints.create_start("test_before_dropdb")
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env.create_branch(
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"test_after_dropdb", ancestor_branch_name="main", ancestor_start_lsn=lsn_after_drop
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)
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endpoint_after = env.endpoints.create_start("test_after_dropdb")
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# Test that database exists on the branch before drop
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endpoint_before.connect(dbname="foodb").close()
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# Test that database subdir exists on the branch before drop
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assert endpoint_before.pgdata_dir
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dbpath = pathlib.Path(endpoint_before.pgdata_dir) / "base" / str(dboid)
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log.info(dbpath)
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assert os.path.isdir(dbpath) is True
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# Test that database subdir doesn't exist on the branch after drop
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assert endpoint_after.pgdata_dir
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dbpath = pathlib.Path(endpoint_after.pgdata_dir) / "base" / str(dboid)
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log.info(dbpath)
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assert os.path.isdir(dbpath) is False
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# Check that we restore the content of the datadir correctly
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check_restored_datadir_content(test_output_dir, env, endpoint)
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