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test_elementid.py

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import unittest

from Products.ParsedXML import DOM
from Products.ParsedXML.DOM import ExpatBuilder
from Products.ParsedXML.StrIO import StringIO
from domapi import DOMImplementationTestSuite

def DOMParseString(xml):
    file = StringIO(xml)
    return ExpatBuilder.parse(file)

def get_element_ids(node):
    result = []
    if node.nodeType == node.ELEMENT_NODE:
        result.append(node.elementId)
    for child in node.childNodes:
        result.extend(get_element_ids(child))
    return result

def check_unique_ids(node):
    element_ids = get_element_ids(node)
    element_ids.sort()
    last = element_ids[0]
    for element_id in element_ids[1:]:
        assert last != element_id,\
               'Found at least one double element_id: %s' % element_id
        last = element_id

class ElementIdTestCase(unittest.TestCase):
    def setUp(self):
        self.doc = DOMParseString('''
        <doc>
        <p>Test</p>
        <p>Another test</p>
        <p>Foo<sub/><sub2>hey</sub2></p>
        </doc>
        ''')

    def checkElementIdsAfterParse(self):
        element_ids = get_element_ids(self.doc)
        for i in xrange(len(element_ids)):
            assert i == element_ids[i]
            
    def checkElementIdsAfterAppend(self):
        element = self.doc.createElement('foo')
        self.doc.documentElement.appendChild(element)
        check_unique_ids(self.doc)

    def checkElementIdsAfterAppend2(self):
        element = self.doc.createElement('foo')
        self.doc.documentElement.insertBefore(
            element, self.doc.documentElement.childNodes[0])
        check_unique_ids(self.doc)

    def checkCloneNodeShallow(self):
        cloned = self.doc.documentElement.cloneNode(0)
        self.doc.documentElement.appendChild(cloned)
        check_unique_ids(self.doc)

    def checkCloneNodeDeep(self):
        cloned = self.doc.documentElement.cloneNode(1)
        self.doc.documentElement.appendChild(cloned)
        check_unique_ids(self.doc)

    def checkImportNodeShallow(self):
        otherdoc = DOMParseString('''
        <hey><some></some></hey>
        ''')
        imported = self.doc.importNode(
            otherdoc.documentElement, 0)
        self.doc.documentElement.appendChild(imported)
        check_unique_ids(self.doc)
        
    def checkImportNodeDeep(self):
        otherdoc = DOMParseString('''
        <hey><some></some></hey>
        ''')
        imported = self.doc.importNode(
            otherdoc.documentElement, 1)
        self.doc.documentElement.appendChild(imported)
        check_unique_ids(self.doc)
        
    
def test_suite():
    suite = unittest.TestSuite()
    suite.addTest(unittest.makeSuite(ElementIdTestCase, 'check'))
    return suite

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

if __name__ == "__main__":
    main()

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