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test_acquisition.py

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"test that the ParsedXML DOM object acquire implicitly"

# this suite isn't done that well.  We could probably just mount a db.

# We currently have to have a Zope instance
# to mount; we need a persistent container & Zope traversal to acquire
# properly, because we don't want to acquire through the transient
# proxy objects.

import unittest
import ZODB # for Persistent
from Products.ParsedXML import ParsedXML

def checkAcquire(aqer, aqee, name):
    "check that acquisition of name from aqee to aqer happens"
    assert hasattr(aqer, name)
    assert getattr(aqer, name) == getattr(aqee, name)
    assert getattr(aqer, name) is getattr(aqee, name)

def checkAcquireNot(aqer, aqee, name):
    "check that acquisition of name from aqee to aqer doesn't happen"
    assert getattr(aqer, name) != getattr(aqee, name)
    assert getattr(aqer, name) is not getattr(aqee, name)


class WrappedAcquisitionTestCase(unittest.TestCase):

    def setUp(self):
        # we need a doc in a container that supports
        # restrictedTraverse and getPhysicalPath to have a proper
        # acquisition chain.
        import OFS.Application
        self.app = OFS.Application.Application()
        self.tmpId = 'TempParsedXMLUnitTestInstance'
        self.app._setObject(self.tmpId, ParsedXML.ParsedXML(self.tmpId))
        self.doc = getattr(self.app, self.tmpId)
        
        self.app.string = 'a string'
        self.app.firstChild = "a string that shouldn't be acquired"

        elt1 = self.doc.createElement('eggs')
        elt2 = self.doc.createElement('ham')
        self.doc.documentElement.appendChild(elt1)
        self.doc.documentElement.appendChild(elt2)
        self.doc.documentElement.setAttribute('color', 'green')

    def _acquisitionTest(self, DOMObj):
        checkAcquire(DOMObj, self.app, 'string')
        checkAcquireNot(DOMObj, self.app, 'firstChild')

    def checkTraversalAcquisition(self):
        "make sure we can acquire through DOM traversal"
        self._acquisitionTest(self.doc)
        self._acquisitionTest(self.doc.documentElement)
        self._acquisitionTest(self.doc.documentElement.firstChild)
        self._acquisitionTest(self.doc.documentElement.firstChild.nextSibling)
        self._acquisitionTest(self.doc.documentElement.ownerDocument)
        self._acquisitionTest(self.doc.documentElement.getAttributeNode(
            'color'))

    def checkMethodAcquisition(self):
        "make sure we acquire through proxied DOM methods"
        elt = self.doc.createElement('foo')
        self._acquisitionTest(self.doc.documentElement.appendChild(elt))

    def checkNodeListAcquisition(self):
        "make sure we can acquire through a NodeList"
        self._acquisitionTest(self.doc.documentElement.childNodes.item(0))

    def checkNamedNodeMapAcquisition(self):
        "make sure we can acquire through a NamedNodeMap"
        self._acquisitionTest(
            self.doc.documentElement.attributes.getNamedItem('color'))

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

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

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

if __name__ == "__main__":
    main()

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