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import sys
import json
import subprocess as sp
import pytest
import psycopg
pytest.importorskip("gevent")
pytestmark = [pytest.mark.gevent]
@pytest.mark.slow
@pytest.mark.timing
def test_gevent(dsn):
TICK = 0.1
script = f"""\
import gevent.monkey
gevent.monkey.patch_all()
import json
import time
import gevent
import psycopg
TICK = {TICK!r}
dts = []
queried = False
def ticker():
t0 = time.time()
for i in range(5):
time.sleep(TICK)
t = time.time()
dts.append(t - t0)
t0 = t
def querier():
time.sleep(TICK * 2)
with psycopg.connect({dsn!r}) as conn:
conn.execute("select pg_sleep(0.3)")
global queried
queried = True
jobs = [gevent.spawn(ticker), gevent.spawn(querier)]
gevent.joinall(jobs, timeout=3)
print(json.dumps(dts))
"""
cmdline = [sys.executable, "-c", script]
rv = sp.run(cmdline, check=True, text=True, stdout=sp.PIPE)
dts = json.loads(rv.stdout)
for dt in dts:
assert TICK <= dt < TICK * 1.2
@pytest.mark.skipif("not psycopg._cmodule._psycopg")
def test_patched_dont_use_wait_c():
if psycopg.waiting.wait is not psycopg.waiting.wait_c:
pytest.skip("wait_c not normally in use")
script = """
import gevent.monkey
gevent.monkey.patch_all()
import psycopg
assert psycopg.waiting.wait is not psycopg.waiting.wait_c
"""
sp.check_call([sys.executable, "-c", script])
@pytest.mark.skipif("not psycopg._cmodule._psycopg")
def test_unpatched_still_use_wait_c():
if psycopg.waiting.wait is not psycopg.waiting.wait_c:
pytest.skip("wait_c not normally in use")
script = """
import gevent.monkey
import psycopg
assert psycopg.waiting.wait is psycopg.waiting.wait_c
"""
sp.check_call([sys.executable, "-c", script])
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