Python xml.dom 模块，insertBefore() 实例源码
我们从Python开源项目中，提取了以下25个代码示例，用于说明如何使用xml.dom.insertBefore()。
def testInsertBeforeFragment(self):
dom, orig, c1, c2, c3, frag = self._create_fragment_test_nodes()
dom.documentElement.insertBefore(frag, None)
self.confirm(tuple(dom.documentElement.childNodes) ==
(orig, c1, c2, c3),
"insertBefore(<fragment>, None)")
frag.unlink()
dom.unlink()
dom, orig, c1, c2, c3, frag = self._create_fragment_test_nodes()
dom.documentElement.insertBefore(frag, orig)
self.confirm(tuple(dom.documentElement.childNodes) ==
(c1, c2, c3, orig),
"insertBefore(<fragment>, orig)")
frag.unlink()
dom.unlink()
def testLegalChildren(self):
dom = Document()
elem = dom.createElement('element')
text = dom.createTextNode('text')
self.assertRaises(xml.dom.HierarchyRequestErr, dom.appendChild, text)
dom.appendChild(elem)
self.assertRaises(xml.dom.HierarchyRequestErr, dom.insertBefore, text,
elem)
self.assertRaises(xml.dom.HierarchyRequestErr, dom.replaceChild, text,
elem)
nodemap = elem.attributes
self.assertRaises(xml.dom.HierarchyRequestErr, nodemap.setNamedItem,
text)
self.assertRaises(xml.dom.HierarchyRequestErr, nodemap.setNamedItemNS,
text)
elem.appendChild(text)
dom.unlink()
def testInsertBeforeFragment(self):
dom, orig, c1, c2, c3, frag = self._create_fragment_test_nodes()
dom.documentElement.insertBefore(frag, None)
self.confirm(tuple(dom.documentElement.childNodes) ==
(orig, c1, c2, c3),
"insertBefore(<fragment>, None)")
frag.unlink()
dom.unlink()
dom, orig, c1, c2, c3, frag = self._create_fragment_test_nodes()
dom.documentElement.insertBefore(frag, orig)
self.confirm(tuple(dom.documentElement.childNodes) ==
(c1, c2, c3, orig),
"insertBefore(<fragment>, orig)")
frag.unlink()
dom.unlink()
def testLegalChildren(self):
dom = Document()
elem = dom.createElement('element')
text = dom.createTextNode('text')
self.assertRaises(xml.dom.HierarchyRequestErr, dom.appendChild, text)
dom.appendChild(elem)
self.assertRaises(xml.dom.HierarchyRequestErr, dom.insertBefore, text,
elem)
self.assertRaises(xml.dom.HierarchyRequestErr, dom.replaceChild, text,
elem)
nodemap = elem.attributes
self.assertRaises(xml.dom.HierarchyRequestErr, nodemap.setNamedItem,
text)
self.assertRaises(xml.dom.HierarchyRequestErr, nodemap.setNamedItemNS,
text)
elem.appendChild(text)
dom.unlink()
def testInsertBeforeFragment(self):
dom, orig, c1, c2, c3, frag = self._create_fragment_test_nodes()
dom.documentElement.insertBefore(frag, None)
self.confirm(tuple(dom.documentElement.childNodes) ==
(orig, c1, c2, c3),
"insertBefore(<fragment>, None)")
frag.unlink()
dom.unlink()
dom, orig, c1, c2, c3, frag = self._create_fragment_test_nodes()
dom.documentElement.insertBefore(frag, orig)
self.confirm(tuple(dom.documentElement.childNodes) ==
(c1, c2, c3, orig),
"insertBefore(<fragment>, orig)")
frag.unlink()
dom.unlink()
def testLegalChildren(self):
dom = Document()
elem = dom.createElement('element')
text = dom.createTextNode('text')
self.assertRaises(xml.dom.HierarchyRequestErr, dom.appendChild, text)
dom.appendChild(elem)
self.assertRaises(xml.dom.HierarchyRequestErr, dom.insertBefore, text,
elem)
self.assertRaises(xml.dom.HierarchyRequestErr, dom.replaceChild, text,
elem)
nodemap = elem.attributes
self.assertRaises(xml.dom.HierarchyRequestErr, nodemap.setNamedItem,
text)
self.assertRaises(xml.dom.HierarchyRequestErr, nodemap.setNamedItemNS,
text)
elem.appendChild(text)
dom.unlink()
def testInsertBeforeFragment(self):
dom, orig, c1, c2, c3, frag = self._create_fragment_test_nodes()
dom.documentElement.insertBefore(frag, None)
self.confirm(tuple(dom.documentElement.childNodes) ==
(orig, c1, c2, c3),
"insertBefore(<fragment>, None)")
frag.unlink()
dom.unlink()
dom, orig, c1, c2, c3, frag = self._create_fragment_test_nodes()
dom.documentElement.insertBefore(frag, orig)
self.confirm(tuple(dom.documentElement.childNodes) ==
(c1, c2, c3, orig),
"insertBefore(<fragment>, orig)")
frag.unlink()
dom.unlink()
def testLegalChildren(self):
dom = Document()
elem = dom.createElement('element')
text = dom.createTextNode('text')
self.assertRaises(xml.dom.HierarchyRequestErr, dom.appendChild, text)
dom.appendChild(elem)
self.assertRaises(xml.dom.HierarchyRequestErr, dom.insertBefore, text,
elem)
self.assertRaises(xml.dom.HierarchyRequestErr, dom.replaceChild, text,
elem)
nodemap = elem.attributes
self.assertRaises(xml.dom.HierarchyRequestErr, nodemap.setNamedItem,
text)
self.assertRaises(xml.dom.HierarchyRequestErr, nodemap.setNamedItemNS,
text)
elem.appendChild(text)
dom.unlink()
def testInsertBeforeFragment(self):
dom, orig, c1, c2, c3, frag = self._create_fragment_test_nodes()
dom.documentElement.insertBefore(frag, None)
self.confirm(tuple(dom.documentElement.childNodes) ==
(orig, c1, c2, c3),
"insertBefore(<fragment>, None)")
frag.unlink()
dom.unlink()
dom, orig, c1, c2, c3, frag = self._create_fragment_test_nodes()
dom.documentElement.insertBefore(frag, orig)
self.confirm(tuple(dom.documentElement.childNodes) ==
(c1, c2, c3, orig),
"insertBefore(<fragment>, orig)")
frag.unlink()
dom.unlink()
def testLegalChildren(self):
dom = Document()
elem = dom.createElement('element')
text = dom.createTextNode('text')
self.assertRaises(xml.dom.HierarchyRequestErr, dom.appendChild, text)
dom.appendChild(elem)
self.assertRaises(xml.dom.HierarchyRequestErr, dom.insertBefore, text,
elem)
self.assertRaises(xml.dom.HierarchyRequestErr, dom.replaceChild, text,
elem)
nodemap = elem.attributes
self.assertRaises(xml.dom.HierarchyRequestErr, nodemap.setNamedItem,
text)
self.assertRaises(xml.dom.HierarchyRequestErr, nodemap.setNamedItemNS,
text)
elem.appendChild(text)
dom.unlink()
def testWholeText(self):
doc = parseString("<doc>a</doc>")
elem = doc.documentElement
text = elem.childNodes[0]
self.assertEqual(text.nodeType, Node.TEXT_NODE)
self.checkWholeText(text, "a")
elem.appendChild(doc.createTextNode("b"))
self.checkWholeText(text, "ab")
elem.insertBefore(doc.createCDATASection("c"), text)
self.checkWholeText(text, "cab")
# make sure we don't cross other nodes
splitter = doc.createComment("comment")
elem.appendChild(splitter)
text2 = doc.createTextNode("d")
elem.appendChild(text2)
self.checkWholeText(text, "cab")
self.checkWholeText(text2, "d")
x = doc.createElement("x")
elem.replaceChild(x, splitter)
splitter = x
self.checkWholeText(text, "cab")
self.checkWholeText(text2, "d")
x = doc.createProcessingInstruction("y", "z")
elem.replaceChild(x, splitter)
splitter = x
self.checkWholeText(text, "cab")
self.checkWholeText(text2, "d")
elem.removeChild(splitter)
self.checkWholeText(text, "cabd")
self.checkWholeText(text2, "cabd")
def testReplaceWholeText(self):
def setup():
doc = parseString("<doc>a<e/>d</doc>")
elem = doc.documentElement
text1 = elem.firstChild
text2 = elem.lastChild
splitter = text1.nextSibling
elem.insertBefore(doc.createTextNode("b"), splitter)
elem.insertBefore(doc.createCDATASection("c"), text1)
return doc, elem, text1, splitter, text2
doc, elem, text1, splitter, text2 = setup()
text = text1.replaceWholeText("new content")
self.checkWholeText(text, "new content")
self.checkWholeText(text2, "d")
self.confirm(len(elem.childNodes) == 3)
doc, elem, text1, splitter, text2 = setup()
text = text2.replaceWholeText("new content")
self.checkWholeText(text, "new content")
self.checkWholeText(text1, "cab")
self.confirm(len(elem.childNodes) == 5)
doc, elem, text1, splitter, text2 = setup()
text = text1.replaceWholeText("")
self.checkWholeText(text2, "d")
self.confirm(text is None
and len(elem.childNodes) == 2)
def testWholeText(self):
doc = parseString("<doc>a</doc>")
elem = doc.documentElement
text = elem.childNodes[0]
self.assertEqual(text.nodeType, Node.TEXT_NODE)
self.checkWholeText(text, "a")
elem.appendChild(doc.createTextNode("b"))
self.checkWholeText(text, "ab")
elem.insertBefore(doc.createCDATASection("c"), text)
self.checkWholeText(text, "cab")
# make sure we don't cross other nodes
splitter = doc.createComment("comment")
elem.appendChild(splitter)
text2 = doc.createTextNode("d")
elem.appendChild(text2)
self.checkWholeText(text, "cab")
self.checkWholeText(text2, "d")
x = doc.createElement("x")
elem.replaceChild(x, splitter)
splitter = x
self.checkWholeText(text, "cab")
self.checkWholeText(text2, "d")
x = doc.createProcessingInstruction("y", "z")
elem.replaceChild(x, splitter)
splitter = x
self.checkWholeText(text, "cab")
self.checkWholeText(text2, "d")
elem.removeChild(splitter)
self.checkWholeText(text, "cabd")
self.checkWholeText(text2, "cabd")
def testReplaceWholeText(self):
def setup():
doc = parseString("<doc>a<e/>d</doc>")
elem = doc.documentElement
text1 = elem.firstChild
text2 = elem.lastChild
splitter = text1.nextSibling
elem.insertBefore(doc.createTextNode("b"), splitter)
elem.insertBefore(doc.createCDATASection("c"), text1)
return doc, elem, text1, splitter, text2
doc, elem, text1, splitter, text2 = setup()
text = text1.replaceWholeText("new content")
self.checkWholeText(text, "new content")
self.checkWholeText(text2, "d")
self.confirm(len(elem.childNodes) == 3)
doc, elem, text1, splitter, text2 = setup()
text = text2.replaceWholeText("new content")
self.checkWholeText(text, "new content")
self.checkWholeText(text1, "cab")
self.confirm(len(elem.childNodes) == 5)
doc, elem, text1, splitter, text2 = setup()
text = text1.replaceWholeText("")
self.checkWholeText(text2, "d")
self.confirm(text is None
and len(elem.childNodes) == 2)
def testWholeText(self):
doc = parseString("<doc>a</doc>")
elem = doc.documentElement
text = elem.childNodes[0]
self.assertEqual(text.nodeType, Node.TEXT_NODE)
self.checkWholeText(text, "a")
elem.appendChild(doc.createTextNode("b"))
self.checkWholeText(text, "ab")
elem.insertBefore(doc.createCDATASection("c"), text)
self.checkWholeText(text, "cab")
# make sure we don't cross other nodes
splitter = doc.createComment("comment")
elem.appendChild(splitter)
text2 = doc.createTextNode("d")
elem.appendChild(text2)
self.checkWholeText(text, "cab")
self.checkWholeText(text2, "d")
x = doc.createElement("x")
elem.replaceChild(x, splitter)
splitter = x
self.checkWholeText(text, "cab")
self.checkWholeText(text2, "d")
x = doc.createProcessingInstruction("y", "z")
elem.replaceChild(x, splitter)
splitter = x
self.checkWholeText(text, "cab")
self.checkWholeText(text2, "d")
elem.removeChild(splitter)
self.checkWholeText(text, "cabd")
self.checkWholeText(text2, "cabd")
def testReplaceWholeText(self):
def setup():
doc = parseString("<doc>a<e/>d</doc>")
elem = doc.documentElement
text1 = elem.firstChild
text2 = elem.lastChild
splitter = text1.nextSibling
elem.insertBefore(doc.createTextNode("b"), splitter)
elem.insertBefore(doc.createCDATASection("c"), text1)
return doc, elem, text1, splitter, text2
doc, elem, text1, splitter, text2 = setup()
text = text1.replaceWholeText("new content")
self.checkWholeText(text, "new content")
self.checkWholeText(text2, "d")
self.confirm(len(elem.childNodes) == 3)
doc, elem, text1, splitter, text2 = setup()
text = text2.replaceWholeText("new content")
self.checkWholeText(text, "new content")
self.checkWholeText(text1, "cab")
self.confirm(len(elem.childNodes) == 5)
doc, elem, text1, splitter, text2 = setup()
text = text1.replaceWholeText("")
self.checkWholeText(text2, "d")
self.confirm(text is None
and len(elem.childNodes) == 2)
def testWholeText(self):
doc = parseString("<doc>a</doc>")
elem = doc.documentElement
text = elem.childNodes[0]
self.assertEqual(text.nodeType, Node.TEXT_NODE)
self.checkWholeText(text, "a")
elem.appendChild(doc.createTextNode("b"))
self.checkWholeText(text, "ab")
elem.insertBefore(doc.createCDATASection("c"), text)
self.checkWholeText(text, "cab")
# make sure we don't cross other nodes
splitter = doc.createComment("comment")
elem.appendChild(splitter)
text2 = doc.createTextNode("d")
elem.appendChild(text2)
self.checkWholeText(text, "cab")
self.checkWholeText(text2, "d")
x = doc.createElement("x")
elem.replaceChild(x, splitter)
splitter = x
self.checkWholeText(text, "cab")
self.checkWholeText(text2, "d")
x = doc.createProcessingInstruction("y", "z")
elem.replaceChild(x, splitter)
splitter = x
self.checkWholeText(text, "cab")
self.checkWholeText(text2, "d")
elem.removeChild(splitter)
self.checkWholeText(text, "cabd")
self.checkWholeText(text2, "cabd")
def testReplaceWholeText(self):
def setup():
doc = parseString("<doc>a<e/>d</doc>")
elem = doc.documentElement
text1 = elem.firstChild
text2 = elem.lastChild
splitter = text1.nextSibling
elem.insertBefore(doc.createTextNode("b"), splitter)
elem.insertBefore(doc.createCDATASection("c"), text1)
return doc, elem, text1, splitter, text2
doc, elem, text1, splitter, text2 = setup()
text = text1.replaceWholeText("new content")
self.checkWholeText(text, "new content")
self.checkWholeText(text2, "d")
self.confirm(len(elem.childNodes) == 3)
doc, elem, text1, splitter, text2 = setup()
text = text2.replaceWholeText("new content")
self.checkWholeText(text, "new content")
self.checkWholeText(text1, "cab")
self.confirm(len(elem.childNodes) == 5)
doc, elem, text1, splitter, text2 = setup()
text = text1.replaceWholeText("")
self.checkWholeText(text2, "d")
self.confirm(text is None
and len(elem.childNodes) == 2)
def testWholeText(self):
doc = parseString("<doc>a</doc>")
elem = doc.documentElement
text = elem.childNodes[0]
self.assertEqual(text.nodeType, Node.TEXT_NODE)
self.checkWholeText(text, "a")
elem.appendChild(doc.createTextNode("b"))
self.checkWholeText(text, "ab")
elem.insertBefore(doc.createCDATASection("c"), text)
self.checkWholeText(text, "cab")
# make sure we don't cross other nodes
splitter = doc.createComment("comment")
elem.appendChild(splitter)
text2 = doc.createTextNode("d")
elem.appendChild(text2)
self.checkWholeText(text, "cab")
self.checkWholeText(text2, "d")
x = doc.createElement("x")
elem.replaceChild(x, splitter)
splitter = x
self.checkWholeText(text, "cab")
self.checkWholeText(text2, "d")
x = doc.createProcessingInstruction("y", "z")
elem.replaceChild(x, splitter)
splitter = x
self.checkWholeText(text, "cab")
self.checkWholeText(text2, "d")
elem.removeChild(splitter)
self.checkWholeText(text, "cabd")
self.checkWholeText(text2, "cabd")
def testReplaceWholeText(self):
def setup():
doc = parseString("<doc>a<e/>d</doc>")
elem = doc.documentElement
text1 = elem.firstChild
text2 = elem.lastChild
splitter = text1.nextSibling
elem.insertBefore(doc.createTextNode("b"), splitter)
elem.insertBefore(doc.createCDATASection("c"), text1)
return doc, elem, text1, splitter, text2
doc, elem, text1, splitter, text2 = setup()
text = text1.replaceWholeText("new content")
self.checkWholeText(text, "new content")
self.checkWholeText(text2, "d")
self.confirm(len(elem.childNodes) == 3)
doc, elem, text1, splitter, text2 = setup()
text = text2.replaceWholeText("new content")
self.checkWholeText(text, "new content")
self.checkWholeText(text1, "cab")
self.confirm(len(elem.childNodes) == 5)
doc, elem, text1, splitter, text2 = setup()
text = text1.replaceWholeText("")
self.checkWholeText(text2, "d")
self.confirm(text is None
and len(elem.childNodes) == 2)
def testInsertBefore(self):
dom = parseString("<doc><foo/></doc>")
root = dom.documentElement
elem = root.childNodes[0]
nelem = dom.createElement("element")
root.insertBefore(nelem, elem)
self.confirm(len(root.childNodes) == 2
and root.childNodes.length == 2
and root.childNodes[0] is nelem
and root.childNodes.item(0) is nelem
and root.childNodes[1] is elem
and root.childNodes.item(1) is elem
and root.firstChild is nelem
and root.lastChild is elem
and root.toxml() == "<doc><element/><foo/></doc>"
, "testInsertBefore -- node properly placed in tree")
nelem = dom.createElement("element")
root.insertBefore(nelem, None)
self.confirm(len(root.childNodes) == 3
and root.childNodes.length == 3
and root.childNodes[1] is elem
and root.childNodes.item(1) is elem
and root.childNodes[2] is nelem
and root.childNodes.item(2) is nelem
and root.lastChild is nelem
and nelem.previousSibling is elem
and root.toxml() == "<doc><element/><foo/><element/></doc>"
, "testInsertBefore -- node properly placed in tree")
nelem2 = dom.createElement("bar")
root.insertBefore(nelem2, nelem)
self.confirm(len(root.childNodes) == 4
and root.childNodes.length == 4
and root.childNodes[2] is nelem2
and root.childNodes.item(2) is nelem2
and root.childNodes[3] is nelem
and root.childNodes.item(3) is nelem
and nelem2.nextSibling is nelem
and nelem.previousSibling is nelem2
and root.toxml() ==
"<doc><element/><foo/><bar/><element/></doc>"
, "testInsertBefore -- node properly placed in tree")
dom.unlink()
def testInsertBefore(self):
dom = parseString("<doc><foo/></doc>")
root = dom.documentElement
elem = root.childNodes[0]
nelem = dom.createElement("element")
root.insertBefore(nelem, elem)
self.confirm(len(root.childNodes) == 2
and root.childNodes.length == 2
and root.childNodes[0] is nelem
and root.childNodes.item(0) is nelem
and root.childNodes[1] is elem
and root.childNodes.item(1) is elem
and root.firstChild is nelem
and root.lastChild is elem
and root.toxml() == "<doc><element/><foo/></doc>"
, "testInsertBefore -- node properly placed in tree")
nelem = dom.createElement("element")
root.insertBefore(nelem, None)
self.confirm(len(root.childNodes) == 3
and root.childNodes.length == 3
and root.childNodes[1] is elem
and root.childNodes.item(1) is elem
and root.childNodes[2] is nelem
and root.childNodes.item(2) is nelem
and root.lastChild is nelem
and nelem.previousSibling is elem
and root.toxml() == "<doc><element/><foo/><element/></doc>"
, "testInsertBefore -- node properly placed in tree")
nelem2 = dom.createElement("bar")
root.insertBefore(nelem2, nelem)
self.confirm(len(root.childNodes) == 4
and root.childNodes.length == 4
and root.childNodes[2] is nelem2
and root.childNodes.item(2) is nelem2
and root.childNodes[3] is nelem
and root.childNodes.item(3) is nelem
and nelem2.nextSibling is nelem
and nelem.previousSibling is nelem2
and root.toxml() ==
"<doc><element/><foo/><bar/><element/></doc>"
, "testInsertBefore -- node properly placed in tree")
dom.unlink()
def testInsertBefore(self):
dom = parseString("<doc><foo/></doc>")
root = dom.documentElement
elem = root.childNodes[0]
nelem = dom.createElement("element")
root.insertBefore(nelem, elem)
self.confirm(len(root.childNodes) == 2
and root.childNodes.length == 2
and root.childNodes[0] is nelem
and root.childNodes.item(0) is nelem
and root.childNodes[1] is elem
and root.childNodes.item(1) is elem
and root.firstChild is nelem
and root.lastChild is elem
and root.toxml() == "<doc><element/><foo/></doc>"
, "testInsertBefore -- node properly placed in tree")
nelem = dom.createElement("element")
root.insertBefore(nelem, None)
self.confirm(len(root.childNodes) == 3
and root.childNodes.length == 3
and root.childNodes[1] is elem
and root.childNodes.item(1) is elem
and root.childNodes[2] is nelem
and root.childNodes.item(2) is nelem
and root.lastChild is nelem
and nelem.previousSibling is elem
and root.toxml() == "<doc><element/><foo/><element/></doc>"
, "testInsertBefore -- node properly placed in tree")
nelem2 = dom.createElement("bar")
root.insertBefore(nelem2, nelem)
self.confirm(len(root.childNodes) == 4
and root.childNodes.length == 4
and root.childNodes[2] is nelem2
and root.childNodes.item(2) is nelem2
and root.childNodes[3] is nelem
and root.childNodes.item(3) is nelem
and nelem2.nextSibling is nelem
and nelem.previousSibling is nelem2
and root.toxml() ==
"<doc><element/><foo/><bar/><element/></doc>"
, "testInsertBefore -- node properly placed in tree")
dom.unlink()
def testInsertBefore(self):
dom = parseString("<doc><foo/></doc>")
root = dom.documentElement
elem = root.childNodes[0]
nelem = dom.createElement("element")
root.insertBefore(nelem, elem)
self.confirm(len(root.childNodes) == 2
and root.childNodes.length == 2
and root.childNodes[0] is nelem
and root.childNodes.item(0) is nelem
and root.childNodes[1] is elem
and root.childNodes.item(1) is elem
and root.firstChild is nelem
and root.lastChild is elem
and root.toxml() == "<doc><element/><foo/></doc>"
, "testInsertBefore -- node properly placed in tree")
nelem = dom.createElement("element")
root.insertBefore(nelem, None)
self.confirm(len(root.childNodes) == 3
and root.childNodes.length == 3
and root.childNodes[1] is elem
and root.childNodes.item(1) is elem
and root.childNodes[2] is nelem
and root.childNodes.item(2) is nelem
and root.lastChild is nelem
and nelem.previousSibling is elem
and root.toxml() == "<doc><element/><foo/><element/></doc>"
, "testInsertBefore -- node properly placed in tree")
nelem2 = dom.createElement("bar")
root.insertBefore(nelem2, nelem)
self.confirm(len(root.childNodes) == 4
and root.childNodes.length == 4
and root.childNodes[2] is nelem2
and root.childNodes.item(2) is nelem2
and root.childNodes[3] is nelem
and root.childNodes.item(3) is nelem
and nelem2.nextSibling is nelem
and nelem.previousSibling is nelem2
and root.toxml() ==
"<doc><element/><foo/><bar/><element/></doc>"
, "testInsertBefore -- node properly placed in tree")
dom.unlink()
def testInsertBefore(self):
dom = parseString("<doc><foo/></doc>")
root = dom.documentElement
elem = root.childNodes[0]
nelem = dom.createElement("element")
root.insertBefore(nelem, elem)
self.confirm(len(root.childNodes) == 2
and root.childNodes.length == 2
and root.childNodes[0] is nelem
and root.childNodes.item(0) is nelem
and root.childNodes[1] is elem
and root.childNodes.item(1) is elem
and root.firstChild is nelem
and root.lastChild is elem
and root.toxml() == "<doc><element/><foo/></doc>"
, "testInsertBefore -- node properly placed in tree")
nelem = dom.createElement("element")
root.insertBefore(nelem, None)
self.confirm(len(root.childNodes) == 3
and root.childNodes.length == 3
and root.childNodes[1] is elem
and root.childNodes.item(1) is elem
and root.childNodes[2] is nelem
and root.childNodes.item(2) is nelem
and root.lastChild is nelem
and nelem.previousSibling is elem
and root.toxml() == "<doc><element/><foo/><element/></doc>"
, "testInsertBefore -- node properly placed in tree")
nelem2 = dom.createElement("bar")
root.insertBefore(nelem2, nelem)
self.confirm(len(root.childNodes) == 4
and root.childNodes.length == 4
and root.childNodes[2] is nelem2
and root.childNodes.item(2) is nelem2
and root.childNodes[3] is nelem
and root.childNodes.item(3) is nelem
and nelem2.nextSibling is nelem
and nelem.previousSibling is nelem2
and root.toxml() ==
"<doc><element/><foo/><bar/><element/></doc>"
, "testInsertBefore -- node properly placed in tree")
dom.unlink()