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from django.dispatch.saferef import safeRef
from django.utils.six.moves import xrange
from django.utils import unittest
class Test1(object):
def x(self):
pass
def test2(obj):
pass
class Test2(object):
def __call__(self, obj):
pass
class SaferefTests(unittest.TestCase):
def setUp(self):
ts = []
ss = []
for x in xrange(5000):
t = Test1()
ts.append(t)
s = safeRef(t.x, self._closure)
ss.append(s)
ts.append(test2)
ss.append(safeRef(test2, self._closure))
for x in xrange(30):
t = Test2()
ts.append(t)
s = safeRef(t, self._closure)
ss.append(s)
self.ts = ts
self.ss = ss
self.closureCount = 0
def tearDown(self):
del self.ts
del self.ss
def testIn(self):
"""Test the "in" operator for safe references (cmp)"""
for t in self.ts[:50]:
self.assertTrue(safeRef(t.x) in self.ss)
def testValid(self):
"""Test that the references are valid (return instance methods)"""
for s in self.ss:
self.assertTrue(s())
def testShortCircuit(self):
"""Test that creation short-circuits to reuse existing references"""
sd = {}
for s in self.ss:
sd[s] = 1
for t in self.ts:
if hasattr(t, 'x'):
self.assertTrue(safeRef(t.x) in sd)
else:
self.assertTrue(safeRef(t) in sd)
def testRepresentation(self):
"""Test that the reference object's representation works
XXX Doesn't currently check the results, just that no error
is raised
"""
repr(self.ss[-1])
def _closure(self, ref):
"""Dumb utility mechanism to increment deletion counter"""
self.closureCount +=1
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