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Instead of having a lot of separate fixtures for setting up the page server, the compute nodes, the safekeepers etc., have one big ZenithEnv object that encapsulates the whole environment. Every test either uses a shared "zenith_simple_env" fixture, which contains the default setup of a pageserver with no authentication, and no safekeepers. Tests that want to use safekeepers or authentication set up a custom test-specific ZenithEnv fixture. Gathering information about the whole environment into one object makes some things simpler. For example, when a new compute node is created, you no longer need to pass the 'wal_acceptors' connection string as argument to the 'postgres.create_start' function. The 'create_start' function fetches that information directly from the ZenithEnv object.
52 lines
1.9 KiB
Python
52 lines
1.9 KiB
Python
import os
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from fixtures.utils import mkdir_if_needed
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from fixtures.zenith_fixtures import ZenithEnv, base_dir, pg_distrib_dir
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pytest_plugins = ("fixtures.zenith_fixtures")
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def test_isolation(zenith_simple_env: ZenithEnv, test_output_dir, pg_bin, capsys):
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env = zenith_simple_env
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# Create a branch for us
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env.zenith_cli(["branch", "test_isolation", "empty"])
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# Connect to postgres and create a database called "regression".
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# isolation tests use prepared transactions, so enable them
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pg = env.postgres.create_start('test_isolation', config_lines=['max_prepared_transactions=100'])
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pg.safe_psql('CREATE DATABASE isolation_regression')
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# Create some local directories for pg_isolation_regress to run in.
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runpath = os.path.join(test_output_dir, 'regress')
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mkdir_if_needed(runpath)
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mkdir_if_needed(os.path.join(runpath, 'testtablespace'))
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# Compute all the file locations that pg_isolation_regress will need.
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build_path = os.path.join(pg_distrib_dir, 'build/src/test/isolation')
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src_path = os.path.join(base_dir, 'vendor/postgres/src/test/isolation')
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bindir = os.path.join(pg_distrib_dir, 'bin')
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schedule = os.path.join(src_path, 'isolation_schedule')
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pg_isolation_regress = os.path.join(build_path, 'pg_isolation_regress')
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pg_isolation_regress_command = [
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pg_isolation_regress,
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'--use-existing',
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'--bindir={}'.format(bindir),
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'--dlpath={}'.format(build_path),
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'--inputdir={}'.format(src_path),
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'--schedule={}'.format(schedule),
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]
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env_vars = {
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'PGPORT': str(pg.port),
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'PGUSER': pg.username,
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'PGHOST': pg.host,
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}
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# Run the command.
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# We don't capture the output. It's not too chatty, and it always
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# logs the exact same data to `regression.out` anyway.
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with capsys.disabled():
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pg_bin.run(pg_isolation_regress_command, env=env_vars, cwd=runpath)
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