def test_When_instantiated_and_no_interactions_Then_evictor_exits_gracefully(self):
p = EvictingPool(WidgetFactory(), maxAgeSecs=60, reapEverySecs=2)
time.sleep(1)
self.assertTrue(p.evictorThread.isAlive())
p.shutdown()
time.sleep(2)
self.assertFalse(p.evictorThread.isAlive())
def test_When_stressed_Then_dont_blow_up(self):
try:
reap = 1
max = 4
num = 100
rs = []
p = EvictingPool(WidgetFactory(),
maxAgeSecs=max,
reapEverySecs=reap)
for i in xrange(num):
rs.append(p.checkout())
for r in rs:
p.checkin(r)
cnt = 0
while p.available() > 0:
time.sleep(1)
cnt += 1
# TODO: Likes to fail on mac
if cnt > 20:
self.fail(
'Failed: expected available to go down to zero. Available = %d'
% p.available())
self.assertEquals(0, p.size())
finally:
p.shutdown()
def test_When_instantiated_and_no_interactions_Then_evictor_exits_gracefully(
self):
p = EvictingPool(WidgetFactory(), maxAgeSecs=60, reapEverySecs=2)
time.sleep(1)
self.assertTrue(p.evictorThread.isAlive())
p.shutdown()
time.sleep(2)
self.assertFalse(p.evictorThread.isAlive())
def test_When_many_lt_maxAge_Then_none_evicted(self):
try:
p = EvictingPool(WidgetFactory(), maxAgeSecs=10, reapEverySecs=1)
r1 = p.checkout()
r2 = p.checkout()
p.checkin(r1)
time.sleep(1)
p.checkin(r2)
self.assertEquals(2, p.available())
finally:
p.shutdown()
def test_When_one_lt_and_one_gt_maxAge_Then_evict_only_gt(self):
try:
max = 5
p = EvictingPool(WidgetFactory(), maxAgeSecs=max, reapEverySecs=1)
r1 = p.checkout()
r2 = p.checkout()
p.checkin(r1)
time.sleep(max + 1) # induce eviction of r1
p.checkin(r2) # induce retention of r2
self.assertEquals(1, p.available())
time.sleep(max+1) # induce eviction of r2
self.assertEquals(0, p.available())
finally:
p.shutdown()
def test_When_many_gt_maxAge_Then_all_evicted(self):
try:
max = 5
p = EvictingPool(WidgetFactory(), maxAgeSecs=max, reapEverySecs=1)
r1 = p.checkout()
r2 = p.checkout()
p.checkin(r1)
time.sleep(1)
p.checkin(r2)
self.assertEquals(2, p.available())
time.sleep(max+1) # induce eviction
self.assertEquals(0, p.available())
finally:
p.shutdown()
def test_When_gt_maxAge_Then_resource_evicted(self):
p = EvictingPool(WidgetFactory(), maxAgeSecs=3, reapEverySecs=1)
p.grow(1)
self.assertEquals(1, p.available())
time.sleep(4) # induce eviction
self.assertEquals(0, p.available())
p.shutdown()
def test_When_many_lt_maxAge_Then_none_evicted(self):
try:
p = EvictingPool(WidgetFactory(), maxAgeSecs=10, reapEverySecs=1)
r1 = p.checkout()
r2 = p.checkout()
p.checkin(r1)
time.sleep(1)
p.checkin(r2)
self.assertEquals(2, p.available())
finally:
p.shutdown()
def test_When_gt_maxAge_Then_resource_evicted(self):
p = EvictingPool(WidgetFactory(), maxAgeSecs=3, reapEverySecs=1)
p.grow(1)
self.assertEquals(1, p.available())
time.sleep(4) # induce eviction
self.assertEquals(0, p.available())
p.shutdown()
def test_When_stressed_Then_dont_blow_up(self):
try:
reap = 1
max = 4
num = 100
rs = []
p = EvictingPool(WidgetFactory(), maxAgeSecs=max, reapEverySecs=reap)
for i in xrange(num):
rs.append(p.checkout())
for r in rs:
p.checkin(r)
cnt = 0
while p.available() > 0:
time.sleep(1)
cnt += 1
# TODO: Likes to fail on mac
if cnt > 20:
self.fail('Failed: expected available to go down to zero. Available = %d' % p.available())
self.assertEquals(0, p.size())
finally:
p.shutdown()
def test_When_lt_maxAge_Then_resource_not_evicted(self):
p = EvictingPool(WidgetFactory(), maxAgeSecs=5, reapEverySecs=1)
p.grow(1)
time.sleep(3)
self.assertEquals(1, p.available())
p.shutdown()
def test_When_one_lt_and_one_gt_maxAge_Then_evict_only_gt(self):
try:
max = 5
p = EvictingPool(WidgetFactory(), maxAgeSecs=max, reapEverySecs=1)
r1 = p.checkout()
r2 = p.checkout()
p.checkin(r1)
time.sleep(max + 1) # induce eviction of r1
p.checkin(r2) # induce retention of r2
self.assertEquals(1, p.available())
time.sleep(max + 1) # induce eviction of r2
self.assertEquals(0, p.available())
finally:
p.shutdown()
def test_When_many_gt_maxAge_Then_all_evicted(self):
try:
max = 5
p = EvictingPool(WidgetFactory(), maxAgeSecs=max, reapEverySecs=1)
r1 = p.checkout()
r2 = p.checkout()
p.checkin(r1)
time.sleep(1)
p.checkin(r2)
self.assertEquals(2, p.available())
time.sleep(max + 1) # induce eviction
self.assertEquals(0, p.available())
finally:
p.shutdown()
def test_When_lt_maxAge_Then_resource_not_evicted(self):
p = EvictingPool(WidgetFactory(), maxAgeSecs=5, reapEverySecs=1)
p.grow(1)
time.sleep(3)
self.assertEquals(1, p.available())
p.shutdown()
