def test_removeLeastAccessed(self):
s = Storage(maxEntries=3)
object = 'object'
object2 = 'object2'
key1 = ('view1', (), ('answer', 42))
key2 = ('view2', (), ('answer', 42))
key3 = ('view3', (), ('answer', 42))
value = 'yes'
timestamp = time()
s._data = {object: {key1: [value, 1, 10],
key2: [value, 6, 5],
key3: [value, 2, 2]},
object2: {key1: [value, 5, 2],
key2: [value, 3, 1],
key3: [value, 4, 1]}}
s.removeLeastAccessed()
self.assertEqual(s._data,
{object: {key1: [value, 1, 0],
key2: [value, 6, 0]}},
'least records removed incorrectly')
s = Storage(maxEntries=6)
s._data = {object: {key1: [value, timestamp, 10],
key2: [value, timestamp, 5],
key3: [value, timestamp, 2]},
object2: {key1: [value, timestamp, 2],
key2: [value, timestamp, 1],
key3: [value, timestamp, 1]}}
c = s._data.copy()
s.removeLeastAccessed()
self.assertEqual(s._data, c, "modified list even though len < max")
def test__clearAccessCounters(self):
s = Storage(maxEntries=3)
object = 'object'
object2 = 'object2'
key1 = ('view1', (), ('answer', 42))
key2 = ('view2', (), ('answer', 42))
key3 = ('view3', (), ('answer', 42))
value = 'yes'
timestamp = time()
s._data = {object: {key1: [value, 1, 10],
key2: [value, 2, 5],
key3: [value, 3, 2]},
object2: {key1: [value, 4, 2],
key2: [value, 5, 1],
key3: [value, 6, 1]}}
s._misses = {object: 4, object2: 2}
cleared = {object: {key1: [value, 1, 0],
key2: [value, 2, 0],
key3: [value, 3, 0]},
object2: {key1: [value, 4, 0],
key2: [value, 5, 0],
key3: [value, 6, 0]}}
clearMisses = {object: 0, object2: 0}
s._clearAccessCounters()
self.assertEqual(s._data, cleared, "access counters not cleared")
self.assertEqual(s._misses, clearMisses, "misses counter not cleared")
def test_invalidate(self):
s = Storage()
object = 'object'
object2 = 'object2'
key = ('view', (), ('answer', 41))
key2 = ('view2', (), ('answer', 42))
value = 'yes'
ts = time()
s._data = {object: {key: [value, ts, 0],
key2: [value, ts, 0]},
object2: {key: [value, ts, 0]}}
s.writelock.acquire()
try:
s.invalidate(object)
finally:
s.writelock.release()
self.assertEqual(s._invalidate_queue, [(object, None)],
"nothing in the invalidation queue")
s._data = {object: {key: [value, ts, 0],
key2: [value, ts, 0]},
object2: {key: [value, ts, 0]}}
s.invalidate(object)
self.assertEqual(s._data, {object2: {key: [value, ts, 0]}},
"not invalidated")
def test_locking(self):
s = Storage(maxAge=100)
s.writelock.acquire()
try:
self.assert_(s.writelock.locked(), "locks don't work")
finally:
s.writelock.release()
def test_do_invalidate(self):
s = Storage()
object = 'object'
object2 = 'object2'
key = ('view', (), ('answer', 41))
key2 = ('view2', (), ('answer', 42))
value = 'yes'
ts = time()
s._data = {object: {key: [value, ts, 0],
key2: [value, ts, 0]},
object2: {key: [value, ts, 0]}}
s._misses[object] = 42
s._do_invalidate(object)
self.assertEqual(s._data, {object2: {key: [value, ts, 0]}},
'invalidation failed')
self.assertEqual(s._misses[object], 0, "misses counter not cleared")
s._data = {object: {key: [value, ts, 0],
key2: [value, ts, 0]},
object2: {key: [value, ts, 0]}}
s._do_invalidate(object, key2)
self.assertEqual(s._data,
{object: {key: [value, ts, 0]},
object2: {key: [value, ts, 0]}},
'invalidation of one key failed')
def test_setEntry(self):
s = Storage(cleanupInterval=300, maxAge=300)
object = 'object'
key = ('view', (), ('answer', 42))
key2 = ('view2', (), ('answer', 42))
value = 'yes'
t1 = time()
s.setEntry(object, key, value)
t2 = time()
timestamp = s._data[object][key][1]
self.failUnless(t1 <= timestamp <= t2, 'wrong timestamp')
self.assertEqual(s._data, {object: {key: [value, timestamp, 0]}},
'stored data incorrectly')
s._data[object][key][1] = time() - 400
s.lastCleanup = time() - 400
s.setEntry(object, key2, value)
timestamp = s._data[object][key2][1]
self.assertEqual(s._data, {object: {key2: [value, timestamp, 0]}},
'cleanup not called')
def test_getEntry(self):
s = Storage()
object = 'object'
key = ('view', (), ('answer', 42))
value = 'yes'
timestamp = time()
s._data = {object: {key: [value, timestamp, 1]}}
self.assertEqual(s.getEntry(object, key), value, 'got wrong value')
self.assert_(s._data[object][key][2] == 2, 'access count not updated')
# See if _misses are updated
try:
s.getEntry(object, "Nonexistent")
except KeyError:
pass
else:
raise Exception("ExpectedKeyError")
self.assertEqual(s._misses[object], 1)
object2 = "second"
self.assert_(not s._misses.has_key(object2))
try:
s.getEntry(object2, "Nonexistent")
except KeyError:
pass
else:
raise Exception("ExpectedKeyError")
self.assertEqual(s._misses[object2], 1)
def test_set_get(self):
s = Storage()
object = 'object'
key = ('view', (), ('answer', 42))
value = 'yes'
s.setEntry(object, key, value)
self.assertEqual(s.getEntry(object, key), value,
'got something other than set')
def test_removeStale(self):
s = Storage(maxAge=100)
object = 'object'
object2 = 'object2'
key = ('view', (), ('answer', 42))
value = 'yes'
timestamp = time()
s._data = {object: {key: [value, timestamp-101, 2]},
object2: {key: [value, timestamp-90, 0]}}
s.removeStaleEntries()
self.assertEqual(s._data, {object2: {key: [value, timestamp-90, 0]}},
'stale records removed incorrectly')
s = Storage(maxAge=0)
s._data = {object: {key: [value, timestamp, 2]},
object2: {key: [value, timestamp-90, 0]}}
d = s._data.copy()
s.removeStaleEntries()
self.assertEqual(s._data, d, 'records removed when maxAge == 0')
def test_getEntry_do_cleanup(self):
s = Storage(cleanupInterval=300, maxAge=300)
object = 'object'
key = ('view', (), ('answer', 42))
value = 'yes'
s.setEntry(object, key, value)
s._data[object][key][1] = time() - 400
s.lastCleanup = time() - 400
self.assertRaises(KeyError, s.getEntry, object, key)
def test_getKeys(self):
s = Storage()
object = 'object'
object2 = 'object2'
key = ('view', (), ('answer', 41))
key2 = ('view2', (), ('answer', 42))
value = 'yes'
ts = time()
s._data = {object: {key: [value, ts, 0],
key2: [value, ts, 0]},
object2: {key: [value, ts, 0]}}
keys = s.getKeys(object)
expected = [key, key2]
keys.sort()
expected.sort()
self.assertEqual(keys, expected, 'bad keys')
def test_invalidateAll(self):
s = Storage()
object = 'object'
object2 = 'object2'
key = ('view', (), ('answer', 41))
key2 = ('view2', (), ('answer', 42))
value = 'yes'
ts = time()
s._data = {object: {key: [value, ts, 0],
key2: [value, ts, 0]},
object2: {key: [value, ts, 0]}}
s._invalidate_queue = [(object, None)]
s._misses = {object: 10, object2: 100}
s.invalidateAll()
self.assertEqual(s._data, {}, "not invalidated")
self.assertEqual(s._misses, {}, "miss counters not reset")
self.assertEqual(s._invalidate_queue, [], "invalidate queue not empty")
def test_invalidate_queued(self):
s = Storage()
object = 'object'
object2 = 'object2'
object3 = 'object3'
key = ('view', (), ('answer', 41))
key2 = ('view2', (), ('answer', 42))
value = 'yes'
ts = time()
s._data = {object: {key: [value, ts, 0],
key2: [value, ts, 0]},
object2: {key: [value, ts, 0]},
object3: "foo" }
s._invalidate_queue = [(object2, None), (object3, None)]
s._invalidate_queued()
self.assertEqual(s._data,
{object: {key: [value, ts, 0], key2: [value, ts, 0]}},
"failed to invalidate queued")
def test_getStatistics(self):
from cPickle import dumps
s = Storage(maxEntries=3)
object = 'object'
object2 = 'object2'
key1 = ('view1', (), ('answer', 42))
key2 = ('view2', (), ('answer', 42))
key3 = ('view3', (), ('answer', 42))
value = 'yes'
timestamp = time()
s._data = {object: {key1: [value, 1, 10],
key2: [value, 2, 5],
key3: [value, 3, 2]},
object2: {key1: [value, 4, 2],
key2: [value, 5, 1],
key3: [value, 6, 1]}}
s._misses = {object: 11, object2: 42}
len1 = len(dumps(s._data[object]))
len2 = len(dumps(s._data[object2]))
expected = ({'path': object,
'hits': 17,
'misses': 11,
'size': len1,
'entries': 3
},
{'path': object2,
'hits': 4,
'misses': 42,
'size': len2,
'entries': 3
},
)
result = s.getStatistics()
self.assertEqual(result, expected)