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3aca717f3d
Merge batch_others and batch_pg_regress. The original idea was to split all the python tests into multiple "batches" and run each batch in parallel as a separate CI job. However, the batch_pg_regress batch was pretty short compared to all the tests in batch_others. We could split batch_others into multiple batches, but it actually seems better to just treat them as one big pool of tests and use pytest's handle the parallelism on its own. If we need to split them across multiple nodes in the future, we could use pytest-shard or something else, instead of managing the batches ourselves. Merge test_neon_regress.py, test_pg_regress.py and test_isolation.py into one file, test_pg_regress.py. Seems more clear to group all pg_regress-based tests into one file, now that they would all be in the same directory.
56 lines
1.7 KiB
Python
56 lines
1.7 KiB
Python
import asyncio
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from io import BytesIO
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from fixtures.log_helper import log
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from fixtures.neon_fixtures import NeonEnv, Postgres
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async def repeat_bytes(buf, repetitions: int):
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for i in range(repetitions):
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yield buf
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async def copy_test_data_to_table(pg: Postgres, worker_id: int, table_name: str):
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buf = BytesIO()
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for i in range(1000):
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buf.write(
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f"{i}\tLoaded by worker {worker_id}. Long string to consume some space.\n".encode()
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)
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buf.seek(0)
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copy_input = repeat_bytes(buf.read(), 5000)
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pg_conn = await pg.connect_async()
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# PgProtocol.connect_async sets statement_timeout to 2 minutes.
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# That's not enough for this test, on a slow system in debug mode.
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await pg_conn.execute("SET statement_timeout='300s'")
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await pg_conn.copy_to_table(table_name, source=copy_input)
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async def parallel_load_same_table(pg: Postgres, n_parallel: int):
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workers = []
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for worker_id in range(n_parallel):
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worker = copy_test_data_to_table(pg, worker_id, "copytest")
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workers.append(asyncio.create_task(worker))
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# await all workers
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await asyncio.gather(*workers)
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# Load data into one table with COPY TO from 5 parallel connections
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def test_parallel_copy(neon_simple_env: NeonEnv, n_parallel=5):
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env = neon_simple_env
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env.neon_cli.create_branch("test_parallel_copy", "empty")
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pg = env.postgres.create_start("test_parallel_copy")
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log.info("postgres is running on 'test_parallel_copy' branch")
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# Create test table
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conn = pg.connect()
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cur = conn.cursor()
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cur.execute("CREATE TABLE copytest (i int, t text)")
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# Run COPY TO to load the table with parallel connections.
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asyncio.run(parallel_load_same_table(pg, n_parallel))
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