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Sourcecode: zope-parsedxml version File versions

test_collection.py

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"Tests for garbage collection."

import unittest
import ZODB # for Persistent
import os
import string
import sys

from Products.ParsedXML import ParsedXML, DOM

import App.ApplicationManager

class ReferenceTestCase(unittest.TestCase):

    def setUp(self):
        self.dbman = App.ApplicationManager.DebugManager() 

    def getRefcounts(self, ob):
        "return number of refcounts for instances of ob's class"
        name = '%s.%s' % (ob.__module__, ob.__class__.__name__)
        for i in self.dbman.refcount():
            if i[1] == name:
                return i[0]
        return 0

    def checkParsedXMLCollect(self):
        "see if refcounts from ParsedXML product init are released"
        doc = ParsedXML.ParsedXML('foo')
        refcounts1 = self.getRefcounts(doc)
        doc = ParsedXML.ParsedXML('foo')
        refcounts2 = self.getRefcounts(doc)
        assert refcounts2 == refcounts1, (
            "ParsedXML leaked %d refcounts" % (refcounts2 - refcounts1))

    def checkDOMParseCollect(self):
        "see if refcounts from DOM parse creation are released"
        testDir = os.path.join(
            sys.modules['Products.ParsedXML'].__path__[0],
            'tests')
        filename = os.path.join(testDir, 'xml', '4ohn4ktj.xml')
        doc = DOM.ExpatBuilder.parse(filename)
        refcounts1 = self.getRefcounts(doc)
        doc = DOM.ExpatBuilder.parse(filename)        
        refcounts2 = self.getRefcounts(doc)
        assert refcounts2 == refcounts1, (
            "DOM parse leaked %d refcounts" % (refcounts2 - refcounts1))

    def checkDOMCreateCollect(self):
        "see if refcounts from DOM creation are released"
        doc = DOM.theDOMImplementation.createDocument(None, 'doc', None)
        refcounts1 = self.getRefcounts(doc)
        doc = DOM.theDOMImplementation.createDocument(None, 'doc', None)
        refcounts2 = self.getRefcounts(doc)
        assert refcounts2 == refcounts1, (
            "DOM parse leaked %d refcounts" % (refcounts2 - refcounts1))

def test_suite():
    """Return a test suite for the Zope testing framework."""

    suite = unittest.TestSuite()
    suite.addTest(unittest.makeSuite(ReferenceTestCase, 'check'))
    return suite

def main():
    unittest.TextTestRunner().run(test_suite())

if __name__ == "__main__":
    main()

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