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test_domish.py
# Copyright (c) Twisted Matrix Laboratories. # See LICENSE for details. """ Tests for L{twisted.words.xish.domish}, a DOM-like library for XMPP. """ from zope.interface.verify import verifyObject from twisted.python.reflect import requireModule from twisted.trial import unittest from twisted.words.xish import domish class ElementTests(unittest.TestCase): """ Tests for L{domish.Element}. """ def test_interface(self): """ L{domish.Element} implements L{domish.IElement}. """ verifyObject(domish.IElement, domish.Element((None, "foo"))) def test_escaping(self): """ The built-in entity references are properly encoded. """ s = "&<>'\"" self.assertEqual(domish.escapeToXml(s), "&<>'\"") self.assertEqual(domish.escapeToXml(s, 1), "&<>'"") def test_namespace(self): """ An attribute on L{domish.Namespace} yields a qualified name. """ ns = domish.Namespace("testns") self.assertEqual(ns.foo, ("testns", "foo")) def test_elementInit(self): """ Basic L{domish.Element} initialization tests. """ e = domish.Element((None, "foo")) self.assertEqual(e.name, "foo") self.assertEqual(e.uri, None) self.assertEqual(e.defaultUri, None) self.assertEqual(e.parent, None) e = domish.Element(("", "foo")) self.assertEqual(e.name, "foo") self.assertEqual(e.uri, "") self.assertEqual(e.defaultUri, "") self.assertEqual(e.parent, None) e = domish.Element(("testns", "foo")) self.assertEqual(e.name, "foo") self.assertEqual(e.uri, "testns") self.assertEqual(e.defaultUri, "testns") self.assertEqual(e.parent, None) e = domish.Element(("testns", "foo"), "test2ns") self.assertEqual(e.name, "foo") self.assertEqual(e.uri, "testns") self.assertEqual(e.defaultUri, "test2ns") def test_childOps(self): """ Basic L{domish.Element} child tests. """ e = domish.Element(("testns", "foo")) e.addContent("somecontent") b2 = e.addElement(("testns2", "bar2")) e["attrib1"] = "value1" e[("testns2", "attrib2")] = "value2" e.addElement("bar") e.addElement("bar") e.addContent("abc") e.addContent("123") # Check content merging self.assertEqual(e.children[-1], "abc123") # Check direct child accessor self.assertEqual(e.bar2, b2) e.bar2.addContent("subcontent") e.bar2["bar2value"] = "somevalue" # Check child ops self.assertEqual(e.children[1], e.bar2) self.assertEqual(e.children[2], e.bar) # Check attribute ops self.assertEqual(e["attrib1"], "value1") del e["attrib1"] self.assertEqual(e.hasAttribute("attrib1"), 0) self.assertEqual(e.hasAttribute("attrib2"), 0) self.assertEqual(e[("testns2", "attrib2")], "value2") def test_characterData(self): """ Extract character data using L{str}. """ element = domish.Element(("testns", "foo")) element.addContent("somecontent") text = str(element) self.assertEqual("somecontent", text) self.assertIsInstance(text, str) def test_characterDataNativeString(self): """ Extract ascii character data using L{str}. """ element = domish.Element(("testns", "foo")) element.addContent("somecontent") text = str(element) self.assertEqual("somecontent", text) self.assertIsInstance(text, str) def test_characterDataUnicode(self): """ Extract character data using L{str}. """ element = domish.Element(("testns", "foo")) element.addContent("\N{SNOWMAN}") text = str(element) self.assertEqual("\N{SNOWMAN}", text) self.assertIsInstance(text, str) def test_characterDataBytes(self): """ Extract character data as UTF-8 using L{bytes}. """ element = domish.Element(("testns", "foo")) element.addContent("\N{SNOWMAN}") text = bytes(element) self.assertEqual("\N{SNOWMAN}".encode(), text) self.assertIsInstance(text, bytes) def test_characterDataMixed(self): """ Mixing addChild with cdata and element, the first cdata is returned. """ element = domish.Element(("testns", "foo")) element.addChild("abc") element.addElement("bar") element.addChild("def") self.assertEqual("abc", str(element)) def test_addContent(self): """ Unicode strings passed to C{addContent} become the character data. """ element = domish.Element(("testns", "foo")) element.addContent("unicode") self.assertEqual("unicode", str(element)) def test_addContentNativeStringASCII(self): """ ASCII native strings passed to C{addContent} become the character data. """ element = domish.Element(("testns", "foo")) element.addContent("native") self.assertEqual("native", str(element)) def test_addContentBytes(self): """ Byte strings passed to C{addContent} are not acceptable on Python 3. """ element = domish.Element(("testns", "foo")) self.assertRaises(TypeError, element.addContent, b"bytes") def test_addElementContent(self): """ Content passed to addElement becomes character data on the new child. """ element = domish.Element(("testns", "foo")) child = element.addElement("bar", content="abc") self.assertEqual("abc", str(child)) def test_elements(self): """ Calling C{elements} without arguments on a L{domish.Element} returns all child elements, whatever the qualified name. """ e = domish.Element(("testns", "foo")) c1 = e.addElement("name") c2 = e.addElement(("testns2", "baz")) c3 = e.addElement("quux") c4 = e.addElement(("testns", "name")) elts = list(e.elements()) self.assertIn(c1, elts) self.assertIn(c2, elts) self.assertIn(c3, elts) self.assertIn(c4, elts) def test_elementsWithQN(self): """ Calling C{elements} with a namespace and local name on a L{domish.Element} returns all child elements with that qualified name. """ e = domish.Element(("testns", "foo")) c1 = e.addElement("name") c2 = e.addElement(("testns2", "baz")) c3 = e.addElement("quux") c4 = e.addElement(("testns", "name")) elts = list(e.elements("testns", "name")) self.assertIn(c1, elts) self.assertNotIn(c2, elts) self.assertNotIn(c3, elts) self.assertIn(c4, elts) class DomishStreamTestsMixin: """ Mixin defining tests for different stream implementations. @ivar streamClass: A no-argument callable which will be used to create an XML parser which can produce a stream of elements from incremental input. """ def setUp(self): self.doc_started = False self.doc_ended = False self.root = None self.elements = [] self.stream = self.streamClass() self.stream.DocumentStartEvent = self._docStarted self.stream.ElementEvent = self.elements.append self.stream.DocumentEndEvent = self._docEnded def _docStarted(self, root): self.root = root self.doc_started = True def _docEnded(self): self.doc_ended = True def doTest(self, xml): self.stream.parse(xml) def testHarness(self): xml = b"<root><child/><child2/></root>" self.stream.parse(xml) self.assertEqual(self.doc_started, True) self.assertEqual(self.root.name, "root") self.assertEqual(self.elements[0].name, "child") self.assertEqual(self.elements[1].name, "child2") self.assertEqual(self.doc_ended, True) def testBasic(self): xml = ( b"<stream:stream xmlns:stream='etherx' xmlns='jabber'>\n" + b" <message to='bar'>" + b" <x xmlns='xdelay'>some&data></x>" + b" </message>" + b"</stream:stream>" ) self.stream.parse(xml) self.assertEqual(self.root.name, "stream") self.assertEqual(self.root.uri, "etherx") self.assertEqual(self.elements[0].name, "message") self.assertEqual(self.elements[0].uri, "jabber") self.assertEqual(self.elements[0]["to"], "bar") self.assertEqual(self.elements[0].x.uri, "xdelay") self.assertEqual(str(self.elements[0].x), "some&data>") def testNoRootNS(self): xml = b"<stream><error xmlns='etherx'/></stream>" self.stream.parse(xml) self.assertEqual(self.root.uri, "") self.assertEqual(self.elements[0].uri, "etherx") def testNoDefaultNS(self): xml = b"<stream:stream xmlns:stream='etherx'><error/></stream:stream>" self.stream.parse(xml) self.assertEqual(self.root.uri, "etherx") self.assertEqual(self.root.defaultUri, "") self.assertEqual(self.elements[0].uri, "") self.assertEqual(self.elements[0].defaultUri, "") def testChildDefaultNS(self): xml = b"<root xmlns='testns'><child/></root>" self.stream.parse(xml) self.assertEqual(self.root.uri, "testns") self.assertEqual(self.elements[0].uri, "testns") def testEmptyChildNS(self): xml = b"""<root xmlns='testns'> <child1><child2 xmlns=''/></child1> </root>""" self.stream.parse(xml) self.assertEqual(self.elements[0].child2.uri, "") def test_attributesWithNamespaces(self): """ Attributes with namespace are parsed without Exception. (https://twistedmatrix.com/trac/ticket/9730 regression test) """ xml = b"""<root xmlns:test='http://example.org' xml:lang='en'> <test:test>test</test:test> </root>""" # with Python 3.8 and without #9730 fix, the following error would # happen at next line: # ``RuntimeError: dictionary keys changed during iteration`` self.stream.parse(xml) self.assertEqual(self.elements[0].uri, "http://example.org") def testChildPrefix(self): xml = b"<root xmlns='testns' xmlns:foo='testns2'><foo:child/></root>" self.stream.parse(xml) self.assertEqual(self.root.localPrefixes["foo"], "testns2") self.assertEqual(self.elements[0].uri, "testns2") def testUnclosedElement(self): self.assertRaises( domish.ParserError, self.stream.parse, b"<root><error></root>" ) def test_namespaceReuse(self): """ Test that reuse of namespaces does affect an element's serialization. When one element uses a prefix for a certain namespace, this is stored in the C{localPrefixes} attribute of the element. We want to make sure that elements created after such use, won't have this prefix end up in their C{localPrefixes} attribute, too. """ xml = b"""<root> <foo:child1 xmlns:foo='testns'/> <child2 xmlns='testns'/> </root>""" self.stream.parse(xml) self.assertEqual("child1", self.elements[0].name) self.assertEqual("testns", self.elements[0].uri) self.assertEqual("", self.elements[0].defaultUri) self.assertEqual({"foo": "testns"}, self.elements[0].localPrefixes) self.assertEqual("child2", self.elements[1].name) self.assertEqual("testns", self.elements[1].uri) self.assertEqual("testns", self.elements[1].defaultUri) self.assertEqual({}, self.elements[1].localPrefixes) class DomishExpatStreamTests(DomishStreamTestsMixin, unittest.TestCase): """ Tests for L{domish.ExpatElementStream}, the expat-based element stream implementation. """ streamClass = domish.ExpatElementStream if requireModule("pyexpat", default=None) is None: skip = "pyexpat is required for ExpatElementStream tests." class DomishSuxStreamTests(DomishStreamTestsMixin, unittest.TestCase): """ Tests for L{domish.SuxElementStream}, the L{twisted.web.sux}-based element stream implementation. """ streamClass = domish.SuxElementStream class SerializerTests(unittest.TestCase): def testNoNamespace(self): e = domish.Element((None, "foo")) self.assertEqual(e.toXml(), "<foo/>") self.assertEqual(e.toXml(closeElement=0), "<foo>") def testDefaultNamespace(self): e = domish.Element(("testns", "foo")) self.assertEqual(e.toXml(), "<foo xmlns='testns'/>") def testOtherNamespace(self): e = domish.Element(("testns", "foo"), "testns2") self.assertEqual( e.toXml({"testns": "bar"}), "<bar:foo xmlns:bar='testns' xmlns='testns2'/>" ) def testChildDefaultNamespace(self): e = domish.Element(("testns", "foo")) e.addElement("bar") self.assertEqual(e.toXml(), "<foo xmlns='testns'><bar/></foo>") def testChildSameNamespace(self): e = domish.Element(("testns", "foo")) e.addElement(("testns", "bar")) self.assertEqual(e.toXml(), "<foo xmlns='testns'><bar/></foo>") def testChildSameDefaultNamespace(self): e = domish.Element(("testns", "foo")) e.addElement("bar", "testns") self.assertEqual(e.toXml(), "<foo xmlns='testns'><bar/></foo>") def testChildOtherDefaultNamespace(self): e = domish.Element(("testns", "foo")) e.addElement(("testns2", "bar"), "testns2") self.assertEqual(e.toXml(), "<foo xmlns='testns'><bar xmlns='testns2'/></foo>") def testOnlyChildDefaultNamespace(self): e = domish.Element((None, "foo")) e.addElement(("ns2", "bar"), "ns2") self.assertEqual(e.toXml(), "<foo><bar xmlns='ns2'/></foo>") def testOnlyChildDefaultNamespace2(self): e = domish.Element((None, "foo")) e.addElement("bar") self.assertEqual(e.toXml(), "<foo><bar/></foo>") def testChildInDefaultNamespace(self): e = domish.Element(("testns", "foo"), "testns2") e.addElement(("testns2", "bar")) self.assertEqual( e.toXml(), "<xn0:foo xmlns:xn0='testns' xmlns='testns2'><bar/></xn0:foo>" ) def testQualifiedAttribute(self): e = domish.Element((None, "foo"), attribs={("testns2", "bar"): "baz"}) self.assertEqual(e.toXml(), "<foo xmlns:xn0='testns2' xn0:bar='baz'/>") def testQualifiedAttributeDefaultNS(self): e = domish.Element(("testns", "foo"), attribs={("testns", "bar"): "baz"}) self.assertEqual( e.toXml(), "<foo xmlns='testns' xmlns:xn0='testns' xn0:bar='baz'/>" ) def testTwoChilds(self): e = domish.Element(("", "foo")) child1 = e.addElement(("testns", "bar"), "testns2") child1.addElement(("testns2", "quux")) child2 = e.addElement(("testns3", "baz"), "testns4") child2.addElement(("testns", "quux")) self.assertEqual( e.toXml(), "<foo><xn0:bar xmlns:xn0='testns' xmlns='testns2'><quux/></xn0:bar><xn1:baz xmlns:xn1='testns3' xmlns='testns4'><xn0:quux xmlns:xn0='testns'/></xn1:baz></foo>", ) def testXMLNamespace(self): e = domish.Element( (None, "foo"), attribs={("http://www.w3.org/XML/1998/namespace", "lang"): "en_US"}, ) self.assertEqual(e.toXml(), "<foo xml:lang='en_US'/>") def testQualifiedAttributeGivenListOfPrefixes(self): e = domish.Element((None, "foo"), attribs={("testns2", "bar"): "baz"}) self.assertEqual( e.toXml({"testns2": "qux"}), "<foo xmlns:qux='testns2' qux:bar='baz'/>" ) def testNSPrefix(self): e = domish.Element((None, "foo"), attribs={("testns2", "bar"): "baz"}) c = e.addElement(("testns2", "qux")) c[("testns2", "bar")] = "quux" self.assertEqual( e.toXml(), "<foo xmlns:xn0='testns2' xn0:bar='baz'><xn0:qux xn0:bar='quux'/></foo>", ) def testDefaultNSPrefix(self): e = domish.Element((None, "foo"), attribs={("testns2", "bar"): "baz"}) c = e.addElement(("testns2", "qux")) c[("testns2", "bar")] = "quux" c.addElement("foo") self.assertEqual( e.toXml(), "<foo xmlns:xn0='testns2' xn0:bar='baz'><xn0:qux xn0:bar='quux'><xn0:foo/></xn0:qux></foo>", ) def testPrefixScope(self): e = domish.Element(("testns", "foo")) self.assertEqual( e.toXml(prefixes={"testns": "bar"}, prefixesInScope=["bar"]), "<bar:foo/>" ) def testLocalPrefixes(self): e = domish.Element(("testns", "foo"), localPrefixes={"bar": "testns"}) self.assertEqual(e.toXml(), "<bar:foo xmlns:bar='testns'/>") def testLocalPrefixesWithChild(self): e = domish.Element(("testns", "foo"), localPrefixes={"bar": "testns"}) e.addElement("baz") self.assertIdentical(e.baz.defaultUri, None) self.assertEqual(e.toXml(), "<bar:foo xmlns:bar='testns'><baz/></bar:foo>") def test_prefixesReuse(self): """ Test that prefixes passed to serialization are not modified. This test makes sure that passing a dictionary of prefixes repeatedly to C{toXml} of elements does not cause serialization errors. A previous implementation changed the passed in dictionary internally, causing havoc later on. """ prefixes = {"testns": "foo"} # test passing of dictionary s = domish.SerializerClass(prefixes=prefixes) self.assertNotIdentical(prefixes, s.prefixes) # test proper serialization on prefixes reuse e = domish.Element(("testns2", "foo"), localPrefixes={"quux": "testns2"}) self.assertEqual("<quux:foo xmlns:quux='testns2'/>", e.toXml(prefixes=prefixes)) e = domish.Element(("testns2", "foo")) self.assertEqual("<foo xmlns='testns2'/>", e.toXml(prefixes=prefixes)) def testRawXMLSerialization(self): e = domish.Element((None, "foo")) e.addRawXml("<abc123>") # The testcase below should NOT generate valid XML -- that's # the whole point of using the raw XML call -- it's the callers # responsibility to ensure that the data inserted is valid self.assertEqual(e.toXml(), "<foo><abc123></foo>") def testRawXMLWithUnicodeSerialization(self): e = domish.Element((None, "foo")) e.addRawXml("<degree>\u00B0</degree>") self.assertEqual(e.toXml(), "<foo><degree>\u00B0</degree></foo>") def testUnicodeSerialization(self): e = domish.Element((None, "foo")) e["test"] = "my value\u0221e" e.addContent("A degree symbol...\u00B0") self.assertEqual( e.toXml(), "<foo test='my value\u0221e'" ">A degree symbol...\u00B0</foo>" )
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