def testRemoveChild(self):
n = Element("foo")
n1 = Element("n1")
n2 = Element("n2")
n3 = Element("n3")
n4 = Element("n4")
n.appendChild(n1)
n.appendChild(n2)
n.appendChild(n3)
n.appendChild(n4)
self.assertEqual(getChildNames(n), ["n1", "n2", "n3", "n4"])
n.removeChild(n3)
self.assertEqual(getChildNames(n), ["n1", "n2", "n4"])
n.removeChild(n4)
self.assertEqual(getChildNames(n), ["n1", "n2"])
self.assertIsNone(n.removeChild(n4))
self.assertEqual(getChildNames(n), ["n1", "n2"])
n5 = Element("n5")
self.assertIsNone(n.removeChild(n5))
self.assertEqual(getChildNames(n), ["n1", "n2"])
n.removeChild(n1)
self.assertEqual(getChildNames(n), ["n2"])
n.removeChild(n2)
self.assertEqual(getChildNames(n), [])
def testChildren(self):
n1 = Element("foo")
n2 = Element("bar1")
n3 = Element("bar2")
n4 = Element("bar3")
n1.appendChild(n2)
n1.appendChild(n3)
n1.appendChild(n4)
self.assertEqual(getChildNames(n1), ["bar1", "bar2", "bar3"])
def testAppendChild(self):
doc = Document()
n1 = Element(doc, "n1")
n2 = Element(n1, "n2")
n3 = Element(n2, "n3")
self.assertEqual(getChildNames(doc), ["n1"])
self.assertEqual(getChildNames(n1), ["n2"])
self.assertEqual(getChildNames(n2), ["n3"])
self.assertEqual(getChildNames(n3), [])
n1.appendChild(n3)
self.assertEqual(getChildNames(doc), ["n1"])
self.assertEqual(getChildNames(n1), ["n2", "n3"])
self.assertEqual(getChildNames(n2), [])
self.assertEqual(getChildNames(n3), [])
def testDocument(self):
doc = Document()
self.assertEqual(doc.document, doc)
n1 = Element("foo")
self.assertIsNone(n1.document)
n2 = Element("bar")
n1.appendChild(n2)
self.assertIsNone(n1.document)
self.assertIsNone(n2.document)
doc.appendChild(n1)
self.assertEqual(n1.document, doc)
self.assertEqual(n2.document, doc)
def testParentChildRelationships(self):
n1 = Element("foo")
self.assertIsNone(n1.parent)
self.assertIsNone(n1.firstChild)
self.assertIsNone(n1.lastChild)
self.assertIsNone(n1.previousSibling)
self.assertIsNone(n1.nextSibling)
n2 = Element("bar")
n3 = Element("bar")
n4 = Element("bar")
n1.appendChild(n2)
n1.appendChild(n3)
n1.appendChild(n4)
self.assertEqual(n1.parent, None)
self.assertEqual(n1.firstChild, n2)
self.assertEqual(n1.lastChild, n4)
self.assertEqual(n1.previousSibling, None)
self.assertEqual(n1.nextSibling, None)
self.assertEqual(n2.parent, n1)
self.assertEqual(n2.firstChild, None)
self.assertEqual(n2.lastChild, None)
self.assertEqual(n2.previousSibling, None)
self.assertEqual(n2.nextSibling, n3)
self.assertEqual(n3.parent, n1)
self.assertEqual(n3.firstChild, None)
self.assertEqual(n3.lastChild, None)
self.assertEqual(n3.previousSibling, n2)
self.assertEqual(n3.nextSibling, n4)
self.assertEqual(n4.parent, n1)
self.assertEqual(n4.firstChild, None)
self.assertEqual(n4.lastChild, None)
self.assertEqual(n4.previousSibling, n3)
self.assertEqual(n4.nextSibling, None)
def testAppendChildDocument(self):
element = Element("foo")
document = Document()
self.assertFalse(element.canAppendChild(document))
self.assertIsNone(element.appendChild(document))
def testAppendChild(self):
node1 = Element("foo")
node2 = Element("bar")
self.assertTrue(node1.canAppendChild(node2))
self.assertEqual(node1.appendChild(node2), node2)
