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Make @cached cache deferreds rather than the deferreds' values

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This commit is contained in:
Erik Johnston 2015-08-06 13:33:34 +01:00
parent 39e21ea51c
commit 7eea3e356f
3 changed files with 22 additions and 19 deletions
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11
tests/storage/test__base.py
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@ -17,6 +17,8 @@
from tests import unittest
from twisted.internet import defer
from synapse.util.async import ObservableDeferred
from synapse.storage._base import Cache, cached
@ -178,19 +180,20 @@ class CacheDecoratorTestCase(unittest.TestCase):
self.assertTrue(callcount[0] >= 14,
msg="Expected callcount >= 14, got %d" % (callcount[0]))
@defer.inlineCallbacks
def test_prefill(self):
callcount = [0]
d = defer.succeed(123)
class A(object):
@cached()
def func(self, key):
callcount[0] += 1
return key
return d
a = A()
a.func.prefill("foo", 123)
a.func.prefill("foo", ObservableDeferred(d))
self.assertEquals((yield a.func("foo")), 123)
self.assertEquals(a.func("foo").result, d.result)
self.assertEquals(callcount[0], 0)