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import time
import pytest
from apscheduler.executors.base import MaxInstancesReachedError
from apscheduler.executors.pool import PoolExecutor
try:
from unittest.mock import Mock, MagicMock
except ImportError:
from mock import Mock, MagicMock
@pytest.fixture
def mock_scheduler():
scheduler_ = Mock([])
scheduler_._create_lock = MagicMock()
return scheduler_
@pytest.fixture(params=['thread', 'process'])
def executor(request, mock_scheduler):
executor_ = PoolExecutor(request.param)
executor_.start(mock_scheduler, 'dummy')
request.addfinalizer(executor_.shutdown)
return executor_
def wait_event():
time.sleep(0.2)
return 'test'
def test_max_instances(mock_scheduler, executor, create_job, freeze_time):
"""Tests that the maximum instance limit on a job is respected."""
events = []
mock_scheduler._dispatch_event = lambda event: events.append(event)
job = create_job(func=wait_event, max_instances=2)
executor.submit_job(job, [freeze_time.current])
executor.submit_job(job, [freeze_time.current])
pytest.raises(MaxInstancesReachedError, executor.submit_job, job, [freeze_time.current])
executor.shutdown()
assert len(events) == 2
assert events[0].retval == 'test'
assert events[1].retval == 'test'
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