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import os
import unittest
import redis
class DummyConnection(object):
def __init__(self, **kwargs):
self.kwargs = kwargs
self.pid = os.getpid()
class ConnectionPoolTestCase(unittest.TestCase):
def get_pool(self, connection_info=None, max_connections=None):
connection_info = connection_info or {'a': 1, 'b': 2, 'c': 3}
pool = redis.ConnectionPool(
connection_class=DummyConnection, max_connections=max_connections,
**connection_info)
return pool
def test_connection_creation(self):
connection_info = {'foo': 'bar', 'biz': 'baz'}
pool = self.get_pool(connection_info=connection_info)
connection = pool.get_connection('_')
self.assertEquals(connection.kwargs, connection_info)
def test_multiple_connections(self):
pool = self.get_pool()
c1 = pool.get_connection('_')
c2 = pool.get_connection('_')
self.assert_(c1 != c2)
def test_max_connections(self):
pool = self.get_pool(max_connections=2)
pool.get_connection('_')
pool.get_connection('_')
self.assertRaises(redis.ConnectionError, pool.get_connection, '_')
def test_blocking_max_connections(self):
pool = self.get_pool(max_connections=2)
pool.get_connection('_')
pool.get_connection('_')
self.assertRaises(redis.ConnectionError, pool.get_connection, '_')
def test_release(self):
pool = self.get_pool()
c1 = pool.get_connection('_')
pool.release(c1)
c2 = pool.get_connection('_')
self.assertEquals(c1, c2)
class BlockingConnectionPoolTestCase(unittest.TestCase):
def get_pool(self, connection_info=None, max_connections=10, timeout=20):
connection_info = connection_info or {'a': 1, 'b': 2, 'c': 3}
pool = redis.BlockingConnectionPool(connection_class=DummyConnection,
max_connections=max_connections,
timeout=timeout, **connection_info)
return pool
def test_connection_creation(self):
connection_info = {'foo': 'bar', 'biz': 'baz'}
pool = self.get_pool(connection_info=connection_info)
connection = pool.get_connection('_')
self.assertEquals(connection.kwargs, connection_info)
def test_multiple_connections(self):
pool = self.get_pool()
c1 = pool.get_connection('_')
c2 = pool.get_connection('_')
self.assert_(c1 != c2)
def test_max_connections_blocks(self):
"""Getting a connection should block for until available."""
import time
from threading import Thread
# We use a queue for cross thread communication within the unit test.
try: # Python 3
from queue import Queue
except ImportError:
from Queue import Queue
q = Queue()
q.put_nowait('Not yet got')
pool = self.get_pool(max_connections=2, timeout=5)
c1 = pool.get_connection('_')
pool.get_connection('_')
target = lambda: q.put_nowait(pool.get_connection('_'))
Thread(target=target).start()
# Blocks while non available.
time.sleep(0.05)
c3 = q.get_nowait()
self.assertEquals(c3, 'Not yet got')
# Then got when available.
pool.release(c1)
time.sleep(0.05)
c3 = q.get_nowait()
self.assertEquals(c1, c3)
def test_max_connections_timeout(self):
"""Getting a connection raises ``ConnectionError`` after timeout."""
pool = self.get_pool(max_connections=2, timeout=0.1)
pool.get_connection('_')
pool.get_connection('_')
self.assertRaises(redis.ConnectionError, pool.get_connection, '_')
def test_release(self):
pool = self.get_pool()
c1 = pool.get_connection('_')
pool.release(c1)
c2 = pool.get_connection('_')
self.assertEquals(c1, c2)
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