Attribute nodes did not always get their ownerDocument and ownerElement

properly set.  This fixes that.

Lib/test/output/test_minidom

@@ -1,5 +1,7 @@
 test_minidom
 Passed testAAA
+Passed setAttribute() sets ownerDocument
+Passed setAttribute() sets ownerElement
 Test Succeeded testAAA
 Passed assertion: len(Node.allnodes) == 0
 Passed testAAB
@@ -131,6 +133,12 @@ Test Succeeded testInsertBeforeFragment
 Passed assertion: len(Node.allnodes) == 0
 Test Succeeded testLegalChildren
 Passed assertion: len(Node.allnodes) == 0
+Passed NamedNodeMap.__setitem__() sets ownerDocument
+Passed NamedNodeMap.__setitem__() sets ownerElement
+Passed NamedNodeMap.__setitem__() sets value
+Passed NamedNodeMap.__setitem__() sets nodeValue
+Test Succeeded testNamedNodeMapSetItem
+Passed assertion: len(Node.allnodes) == 0
 Passed test NodeList.item()
 Test Succeeded testNodeListItem
 Passed assertion: len(Node.allnodes) == 0

Lib/test/test_minidom.py

@@ -166,6 +166,23 @@ def testLegalChildren():
     elem.appendChild(text)
     dom.unlink()
 
+def testNamedNodeMapSetItem():
+    dom = Document()
+    elem = dom.createElement('element')
+    attrs = elem.attributes
+    attrs["foo"] = "bar"
+    a = attrs.item(0)
+    confirm(a.ownerDocument is dom,
+            "NamedNodeMap.__setitem__() sets ownerDocument")
+    confirm(a.ownerElement is elem,
+            "NamedNodeMap.__setitem__() sets ownerElement")
+    confirm(a.value == "bar",
+            "NamedNodeMap.__setitem__() sets value")
+    confirm(a.nodeValue == "bar",
+            "NamedNodeMap.__setitem__() sets nodeValue")
+    elem.unlink()
+    dom.unlink()
+
 def testNonZero():
     dom = parse(tstfile)
     confirm(dom)# should not be zero
@@ -188,6 +205,11 @@ def testAAA():
     el = dom.documentElement
     el.setAttribute("spam", "jam2")
     confirm(el.toxml() == '<abc spam="jam2"/>', "testAAA")
+    a = el.getAttributeNode("spam")
+    confirm(a.ownerDocument is dom,
+            "setAttribute() sets ownerDocument")
+    confirm(a.ownerElement is dom.documentElement,
+            "setAttribute() sets ownerElement")
     dom.unlink()
 
 def testAAB():

Lib/xml/dom/minidom.py

@@ -364,9 +364,10 @@ class NamedNodeMap:
     attributes as found in an input document.
     """
 
-    def __init__(self, attrs, attrsNS):
+    def __init__(self, attrs, attrsNS, ownerElement):
         self._attrs = attrs
         self._attrsNS = attrsNS
+        self._ownerElement = ownerElement
 
     try:
         property
@@ -430,6 +431,7 @@ class NamedNodeMap:
         if type(value) in _StringTypes:
             node = Attr(attname)
             node.value = value
+            node.ownerDocument = self._ownerElement.ownerDocument
         else:
             if not isinstance(value, Attr):
                 raise TypeError, "value must be a string or Attr object"
@@ -445,6 +447,7 @@ class NamedNodeMap:
             old.unlink()
         self._attrs[node.name] = node
         self._attrsNS[(node.namespaceURI, node.localName)] = node
+        node.ownerElement = self._ownerElement
         return old
 
     def setNamedItemNS(self, node):
@@ -518,14 +521,18 @@ class Element(Node):
     def setAttribute(self, attname, value):
         attr = Attr(attname)
         # for performance
-        attr.__dict__["value"] = attr.__dict__["nodeValue"] = value
+        d = attr.__dict__
+        d["value"] = d["nodeValue"] = value
+        d["ownerDocument"] = self.ownerDocument
         self.setAttributeNode(attr)
 
     def setAttributeNS(self, namespaceURI, qualifiedName, value):
         prefix, localname = _nssplit(qualifiedName)
         # for performance
         attr = Attr(qualifiedName, namespaceURI, localname, prefix)
-        attr.__dict__["value"] = attr.__dict__["nodeValue"] = value
+        d = attr.__dict__
+        d["value"] = d["nodeValue"] = value
+        d["ownerDocument"] = self.ownerDocument
         self.setAttributeNode(attr)
 
     def getAttributeNode(self, attrname):
@@ -608,7 +615,7 @@ class Element(Node):
             writer.write("/>%s"%(newl))
 
     def _get_attributes(self):
-        return AttributeList(self._attrs, self._attrsNS)
+        return NamedNodeMap(self._attrs, self._attrsNS, self)
 
     try:
         property