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from pydispatch.saferef import *
import unittest
class T1( object):
def x( self ):
pass
def t2(obj):
pass
class T2( object ):
def __call__( self, obj ):
pass
class Tester (unittest.TestCase):
def setUp (self):
ts = []
ss = []
for x in range( 5000 ):
t = T1()
ts.append( t)
s = safeRef(t.x, self._closure )
ss.append( s)
ts.append( t2 )
ss.append( safeRef(t2, self._closure) )
for x in range( 30 ):
t = T2()
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]:
assert safeRef(t.x) in self.ss
def testValid(self):
"""Test that the references are valid (return instance methods)"""
for s in self.ss:
assert 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'):
assert safeRef(t.x) in sd
else:
assert 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 test(self):
self.closureCount = 0
wholeI = len(self.ts)
for i in range( len(self.ts)-1, -1, -1):
del self.ts[i]
if wholeI-i != self.closureCount:
"""Unexpected number of items closed, expected %s, got %s closed"""%( wholeI-i,self.closureCount)
def _closure(self, ref):
"""Dumb utility mechanism to increment deletion counter"""
self.closureCount +=1
def getSuite():
return unittest.makeSuite(Tester,'test')
if __name__ == "__main__":
unittest.main ()
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