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import pytest
from bonsai import LDAPClient
from bonsai.pool import (
ClosedPool,
ConnectionPool,
EmptyPool,
PoolError,
ThreadedConnectionPool,
)
import math
import threading
import time
def test_init():
""" Test pool initialisation. """
cli = LDAPClient("ldap://dummy.nfo")
with pytest.raises(ValueError):
_ = ConnectionPool(cli, minconn=-3)
with pytest.raises(ValueError):
_ = ConnectionPool(cli, minconn=5, maxconn=3)
pool = ConnectionPool(cli, minconn=2, maxconn=5)
assert pool.closed == True
assert pool.empty == False
assert pool.max_connection == 5
assert pool.shared_connection == 0
assert pool.idle_connection == 0
def test_open(client):
""" Test opening the pool. """
pool = ConnectionPool(client, minconn=5)
pool.open()
assert pool.closed != True
assert pool.idle_connection == 5
def test_close(client):
""" Test closing the connection. """
pool = ConnectionPool(client, minconn=1)
pool.open()
conn = pool.get()
pool.close()
assert pool.closed == True
assert pool.idle_connection == 0
assert pool.shared_connection == 0
assert conn.closed == True
def test_get(client):
""" Test getting a connection from the pool. """
pool = ConnectionPool(client, minconn=1, maxconn=2)
with pytest.raises(ClosedPool):
_ = pool.get()
pool.open()
assert pool.max_connection == 2
assert pool.idle_connection == 1
assert pool.shared_connection == 0
conn1 = pool.get()
assert conn1 is not None
assert conn1.closed == False
assert pool.idle_connection == 0
assert pool.shared_connection == 1
conn2 = pool.get()
assert pool.idle_connection == 0
assert pool.shared_connection == 2
with pytest.raises(EmptyPool):
_ = pool.get()
assert pool.empty == True
def test_put(client):
""" Test putting connection back into the pool. """
pool = ConnectionPool(client, minconn=1, maxconn=1)
with pytest.raises(ClosedPool):
pool.put(None)
pool.open()
conn = pool.get()
assert pool.idle_connection == 0
pool.put(conn)
assert pool.idle_connection == 1
other_conn = client.connect()
with pytest.raises(PoolError):
pool.put(other_conn)
def test_put_closed(client):
""" Test closed connections are not put back into the pool. """
pool = ConnectionPool(client, minconn=1, maxconn=1)
pool.open()
conn = pool.get()
assert pool.idle_connection == 0
assert pool.shared_connection == 1
conn.close()
pool.put(conn)
assert pool.idle_connection == 0
assert pool.shared_connection == 0
# The pool is below its minimum connection count, but this shouldn't cause
# problems and get should create a new connection.
conn = pool.get()
assert pool.idle_connection == 0
assert pool.shared_connection == 1
pool.put(conn)
pool.close()
def test_max_connection():
""" Test max_connection property. """
cli = LDAPClient("ldap://dummy.nfo")
pool = ConnectionPool(cli, minconn=5, maxconn=5)
assert pool.max_connection == 5
with pytest.raises(ValueError):
pool.max_connection = 4
pool.max_connection = 10
assert pool.max_connection == 10
def test_spawn(client):
""" Test context manager. """
pool = ConnectionPool(client, minconn=1, maxconn=1)
assert pool.idle_connection == 0
with pool.spawn() as conn:
_ = conn.whoami()
assert pool.idle_connection == 1
assert pool.shared_connection == 0
def keep(pool, sleep):
try:
with pool.spawn() as conn:
time.sleep(sleep)
assert not conn.closed
except ClosedPool:
pass
def test_threaded_pool_block(client):
""" Test threaded pool blocks when it's empty. """
sleep = 5
pool = ThreadedConnectionPool(client, minconn=1, maxconn=1)
pool.open()
t0 = threading.Thread(target=keep, args=(pool, sleep))
conn = pool.get()
t0.start()
pool.put(conn)
time.sleep(2)
start = time.time()
conn = pool.get()
# Some assertation that it didn't happen immediately.
assert math.ceil(time.time() - start) + 1.2 >= sleep / 2.0
assert not conn.closed
pool.put(conn)
def test_threaded_pool_raise(client):
""" Test threaded pool blocks when it's empty. """
sleep = 5
pool = ThreadedConnectionPool(client, minconn=1, maxconn=1, block=False)
t0 = threading.Thread(target=keep, args=(pool, sleep))
t0.start()
time.sleep(2)
with pytest.raises(EmptyPool):
_ = pool.get()
time.sleep(sleep + 1.2)
conn = pool.get()
assert conn.closed == False
def test_threaded_pool_close(client):
""" Test closing threaded pool. """
sleep = 5
pool = ThreadedConnectionPool(client, minconn=1, maxconn=1, block=False)
t0 = threading.Thread(target=keep, args=(pool, sleep))
t0.start()
time.sleep(2)
pool.close()
assert pool.closed
t0.join()
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