# IMPORTANT: the same tests are run from "test_xml_etree_c" in order # to ensure consistency between the C implementation and the Python # implementation. # # For this purpose, the module-level "ET" symbol is temporarily # monkey-patched when running the "test_xml_etree_c" test suite. import copy import functools import html import io import operator import pickle import sys import types import unittest import warnings import weakref from itertools import product from test import support from test.support import TESTFN, findfile, import_fresh_module, gc_collect, swap_attr # pyET is the pure-Python implementation. # # ET is pyET in test_xml_etree and is the C accelerated version in # test_xml_etree_c. pyET = None ET = None SIMPLE_XMLFILE = findfile("simple.xml", subdir="xmltestdata") try: SIMPLE_XMLFILE.encode("utf-8") except UnicodeEncodeError: raise unittest.SkipTest("filename is not encodable to utf8") SIMPLE_NS_XMLFILE = findfile("simple-ns.xml", subdir="xmltestdata") UTF8_BUG_XMLFILE = findfile("expat224_utf8_bug.xml", subdir="xmltestdata") SAMPLE_XML = """\ text
subtext
""" SAMPLE_SECTION = """\
subtext
""" SAMPLE_XML_NS = """ text
subtext
""" SAMPLE_XML_NS_ELEMS = """ Apples Bananas African Coffee Table 80 120 """ ENTITY_XML = """\ %user-entities; ]> &entity; """ def checkwarnings(*filters, quiet=False): def decorator(test): def newtest(*args, **kwargs): with support.check_warnings(*filters, quiet=quiet): test(*args, **kwargs) functools.update_wrapper(newtest, test) return newtest return decorator class ModuleTest(unittest.TestCase): def test_sanity(self): # Import sanity. from xml.etree import ElementTree from xml.etree import ElementInclude from xml.etree import ElementPath def test_all(self): names = ("xml.etree.ElementTree", "_elementtree") support.check__all__(self, ET, names, blacklist=("HTML_EMPTY",)) def serialize(elem, to_string=True, encoding='unicode', **options): if encoding != 'unicode': file = io.BytesIO() else: file = io.StringIO() tree = ET.ElementTree(elem) tree.write(file, encoding=encoding, **options) if to_string: return file.getvalue() else: file.seek(0) return file def summarize_list(seq): return [elem.tag for elem in seq] class ElementTestCase: @classmethod def setUpClass(cls): cls.modules = {pyET, ET} def pickleRoundTrip(self, obj, name, dumper, loader, proto): save_m = sys.modules[name] try: sys.modules[name] = dumper temp = pickle.dumps(obj, proto) sys.modules[name] = loader result = pickle.loads(temp) except pickle.PicklingError as pe: # pyET must be second, because pyET may be (equal to) ET. human = dict([(ET, "cET"), (pyET, "pyET")]) raise support.TestFailed("Failed to round-trip %r from %r to %r" % (obj, human.get(dumper, dumper), human.get(loader, loader))) from pe finally: sys.modules[name] = save_m return result def assertEqualElements(self, alice, bob): self.assertIsInstance(alice, (ET.Element, pyET.Element)) self.assertIsInstance(bob, (ET.Element, pyET.Element)) self.assertEqual(len(list(alice)), len(list(bob))) for x, y in zip(alice, bob): self.assertEqualElements(x, y) properties = operator.attrgetter('tag', 'tail', 'text', 'attrib') self.assertEqual(properties(alice), properties(bob)) # -------------------------------------------------------------------- # element tree tests class ElementTreeTest(unittest.TestCase): def serialize_check(self, elem, expected): self.assertEqual(serialize(elem), expected) def test_interface(self): # Test element tree interface. def check_string(string): len(string) for char in string: self.assertEqual(len(char), 1, msg="expected one-character string, got %r" % char) new_string = string + "" new_string = string + " " string[:0] def check_mapping(mapping): len(mapping) keys = mapping.keys() items = mapping.items() for key in keys: item = mapping[key] mapping["key"] = "value" self.assertEqual(mapping["key"], "value", msg="expected value string, got %r" % mapping["key"]) def check_element(element): self.assertTrue(ET.iselement(element), msg="not an element") direlem = dir(element) for attr in 'tag', 'attrib', 'text', 'tail': self.assertTrue(hasattr(element, attr), msg='no %s member' % attr) self.assertIn(attr, direlem, msg='no %s visible by dir' % attr) check_string(element.tag) check_mapping(element.attrib) if element.text is not None: check_string(element.text) if element.tail is not None: check_string(element.tail) for elem in element: check_element(elem) element = ET.Element("tag") check_element(element) tree = ET.ElementTree(element) check_element(tree.getroot()) element = ET.Element("t\xe4g", key="value") tree = ET.ElementTree(element) self.assertRegex(repr(element), r"^$") element = ET.Element("tag", key="value") # Make sure all standard element methods exist. def check_method(method): self.assertTrue(hasattr(method, '__call__'), msg="%s not callable" % method) check_method(element.append) check_method(element.extend) check_method(element.insert) check_method(element.remove) check_method(element.getchildren) check_method(element.find) check_method(element.iterfind) check_method(element.findall) check_method(element.findtext) check_method(element.clear) check_method(element.get) check_method(element.set) check_method(element.keys) check_method(element.items) check_method(element.iter) check_method(element.itertext) check_method(element.getiterator) # These methods return an iterable. See bug 6472. def check_iter(it): check_method(it.__next__) check_iter(element.iterfind("tag")) check_iter(element.iterfind("*")) check_iter(tree.iterfind("tag")) check_iter(tree.iterfind("*")) # These aliases are provided: self.assertEqual(ET.XML, ET.fromstring) self.assertEqual(ET.PI, ET.ProcessingInstruction) def test_set_attribute(self): element = ET.Element('tag') self.assertEqual(element.tag, 'tag') element.tag = 'Tag' self.assertEqual(element.tag, 'Tag') element.tag = 'TAG' self.assertEqual(element.tag, 'TAG') self.assertIsNone(element.text) element.text = 'Text' self.assertEqual(element.text, 'Text') element.text = 'TEXT' self.assertEqual(element.text, 'TEXT') self.assertIsNone(element.tail) element.tail = 'Tail' self.assertEqual(element.tail, 'Tail') element.tail = 'TAIL' self.assertEqual(element.tail, 'TAIL') self.assertEqual(element.attrib, {}) element.attrib = {'a': 'b', 'c': 'd'} self.assertEqual(element.attrib, {'a': 'b', 'c': 'd'}) element.attrib = {'A': 'B', 'C': 'D'} self.assertEqual(element.attrib, {'A': 'B', 'C': 'D'}) def test_simpleops(self): # Basic method sanity checks. elem = ET.XML("") self.serialize_check(elem, '') e = ET.Element("tag2") elem.append(e) self.serialize_check(elem, '') elem.remove(e) self.serialize_check(elem, '') elem.insert(0, e) self.serialize_check(elem, '') elem.remove(e) elem.extend([e]) self.serialize_check(elem, '') elem.remove(e) element = ET.Element("tag", key="value") self.serialize_check(element, '') # 1 subelement = ET.Element("subtag") element.append(subelement) self.serialize_check(element, '') # 2 element.insert(0, subelement) self.serialize_check(element, '') # 3 element.remove(subelement) self.serialize_check(element, '') # 4 element.remove(subelement) self.serialize_check(element, '') # 5 with self.assertRaises(ValueError) as cm: element.remove(subelement) self.assertEqual(str(cm.exception), 'list.remove(x): x not in list') self.serialize_check(element, '') # 6 element[0:0] = [subelement, subelement, subelement] self.serialize_check(element[1], '') self.assertEqual(element[1:9], [element[1], element[2]]) self.assertEqual(element[:9:2], [element[0], element[2]]) del element[1:2] self.serialize_check(element, '') def test_cdata(self): # Test CDATA handling (etc). self.serialize_check(ET.XML("hello"), 'hello') self.serialize_check(ET.XML("hello"), 'hello') self.serialize_check(ET.XML(""), 'hello') def test_file_init(self): stringfile = io.BytesIO(SAMPLE_XML.encode("utf-8")) tree = ET.ElementTree(file=stringfile) self.assertEqual(tree.find("tag").tag, 'tag') self.assertEqual(tree.find("section/tag").tag, 'tag') tree = ET.ElementTree(file=SIMPLE_XMLFILE) self.assertEqual(tree.find("element").tag, 'element') self.assertEqual(tree.find("element/../empty-element").tag, 'empty-element') def test_path_cache(self): # Check that the path cache behaves sanely. from xml.etree import ElementPath elem = ET.XML(SAMPLE_XML) for i in range(10): ET.ElementTree(elem).find('./'+str(i)) cache_len_10 = len(ElementPath._cache) for i in range(10): ET.ElementTree(elem).find('./'+str(i)) self.assertEqual(len(ElementPath._cache), cache_len_10) for i in range(20): ET.ElementTree(elem).find('./'+str(i)) self.assertGreater(len(ElementPath._cache), cache_len_10) for i in range(600): ET.ElementTree(elem).find('./'+str(i)) self.assertLess(len(ElementPath._cache), 500) def test_copy(self): # Test copy handling (etc). import copy e1 = ET.XML("hello") e2 = copy.copy(e1) e3 = copy.deepcopy(e1) e1.find("foo").tag = "bar" self.serialize_check(e1, 'hello') self.serialize_check(e2, 'hello') self.serialize_check(e3, 'hello') def test_attrib(self): # Test attribute handling. elem = ET.Element("tag") elem.get("key") # 1.1 self.assertEqual(elem.get("key", "default"), 'default') # 1.2 elem.set("key", "value") self.assertEqual(elem.get("key"), 'value') # 1.3 elem = ET.Element("tag", key="value") self.assertEqual(elem.get("key"), 'value') # 2.1 self.assertEqual(elem.attrib, {'key': 'value'}) # 2.2 attrib = {"key": "value"} elem = ET.Element("tag", attrib) attrib.clear() # check for aliasing issues self.assertEqual(elem.get("key"), 'value') # 3.1 self.assertEqual(elem.attrib, {'key': 'value'}) # 3.2 attrib = {"key": "value"} elem = ET.Element("tag", **attrib) attrib.clear() # check for aliasing issues self.assertEqual(elem.get("key"), 'value') # 4.1 self.assertEqual(elem.attrib, {'key': 'value'}) # 4.2 elem = ET.Element("tag", {"key": "other"}, key="value") self.assertEqual(elem.get("key"), 'value') # 5.1 self.assertEqual(elem.attrib, {'key': 'value'}) # 5.2 elem = ET.Element('test') elem.text = "aa" elem.set('testa', 'testval') elem.set('testb', 'test2') self.assertEqual(ET.tostring(elem), b'aa') self.assertEqual(sorted(elem.keys()), ['testa', 'testb']) self.assertEqual(sorted(elem.items()), [('testa', 'testval'), ('testb', 'test2')]) self.assertEqual(elem.attrib['testb'], 'test2') elem.attrib['testb'] = 'test1' elem.attrib['testc'] = 'test2' self.assertEqual(ET.tostring(elem), b'aa') elem = ET.Element('test') elem.set('a', '\r') elem.set('b', '\r\n') elem.set('c', '\t\n\r ') elem.set('d', '\n\n') self.assertEqual(ET.tostring(elem), b'') def test_makeelement(self): # Test makeelement handling. elem = ET.Element("tag") attrib = {"key": "value"} subelem = elem.makeelement("subtag", attrib) self.assertIsNot(subelem.attrib, attrib, msg="attrib aliasing") elem.append(subelem) self.serialize_check(elem, '') elem.clear() self.serialize_check(elem, '') elem.append(subelem) self.serialize_check(elem, '') elem.extend([subelem, subelem]) self.serialize_check(elem, '') elem[:] = [subelem] self.serialize_check(elem, '') elem[:] = tuple([subelem]) self.serialize_check(elem, '') def test_parsefile(self): # Test parsing from file. tree = ET.parse(SIMPLE_XMLFILE) stream = io.StringIO() tree.write(stream, encoding='unicode') self.assertEqual(stream.getvalue(), '\n' ' text\n' ' texttail\n' ' \n' '') tree = ET.parse(SIMPLE_NS_XMLFILE) stream = io.StringIO() tree.write(stream, encoding='unicode') self.assertEqual(stream.getvalue(), '\n' ' text\n' ' texttail\n' ' \n' '') with open(SIMPLE_XMLFILE) as f: data = f.read() parser = ET.XMLParser() self.assertRegex(parser.version, r'^Expat ') parser.feed(data) self.serialize_check(parser.close(), '\n' ' text\n' ' texttail\n' ' \n' '') target = ET.TreeBuilder() parser = ET.XMLParser(target=target) parser.feed(data) self.serialize_check(parser.close(), '\n' ' text\n' ' texttail\n' ' \n' '') def test_parseliteral(self): element = ET.XML("text") self.assertEqual(ET.tostring(element, encoding='unicode'), 'text') element = ET.fromstring("text") self.assertEqual(ET.tostring(element, encoding='unicode'), 'text') sequence = ["", "text"] element = ET.fromstringlist(sequence) self.assertEqual(ET.tostring(element), b'text') self.assertEqual(b"".join(ET.tostringlist(element)), b'text') self.assertEqual(ET.tostring(element, "ascii"), b"\n" b"text") _, ids = ET.XMLID("text") self.assertEqual(len(ids), 0) _, ids = ET.XMLID("text") self.assertEqual(len(ids), 1) self.assertEqual(ids["body"].tag, 'body') def test_iterparse(self): # Test iterparse interface. iterparse = ET.iterparse context = iterparse(SIMPLE_XMLFILE) action, elem = next(context) self.assertEqual((action, elem.tag), ('end', 'element')) self.assertEqual([(action, elem.tag) for action, elem in context], [ ('end', 'element'), ('end', 'empty-element'), ('end', 'root'), ]) self.assertEqual(context.root.tag, 'root') context = iterparse(SIMPLE_NS_XMLFILE) self.assertEqual([(action, elem.tag) for action, elem in context], [ ('end', '{namespace}element'), ('end', '{namespace}element'), ('end', '{namespace}empty-element'), ('end', '{namespace}root'), ]) events = () context = iterparse(SIMPLE_XMLFILE, events) self.assertEqual([(action, elem.tag) for action, elem in context], []) events = () context = iterparse(SIMPLE_XMLFILE, events=events) self.assertEqual([(action, elem.tag) for action, elem in context], []) events = ("start", "end") context = iterparse(SIMPLE_XMLFILE, events) self.assertEqual([(action, elem.tag) for action, elem in context], [ ('start', 'root'), ('start', 'element'), ('end', 'element'), ('start', 'element'), ('end', 'element'), ('start', 'empty-element'), ('end', 'empty-element'), ('end', 'root'), ]) events = ("start", "end", "start-ns", "end-ns") context = iterparse(SIMPLE_NS_XMLFILE, events) self.assertEqual([(action, elem.tag) if action in ("start", "end") else (action, elem) for action, elem in context], [ ('start-ns', ('', 'namespace')), ('start', '{namespace}root'), ('start', '{namespace}element'), ('end', '{namespace}element'), ('start', '{namespace}element'), ('end', '{namespace}element'), ('start', '{namespace}empty-element'), ('end', '{namespace}empty-element'), ('end', '{namespace}root'), ('end-ns', None), ]) events = ('start-ns', 'end-ns') context = iterparse(io.StringIO(r""), events) res = [action for action, elem in context] self.assertEqual(res, ['start-ns', 'end-ns']) events = ("start", "end", "bogus") with open(SIMPLE_XMLFILE, "rb") as f: with self.assertRaises(ValueError) as cm: iterparse(f, events) self.assertFalse(f.closed) self.assertEqual(str(cm.exception), "unknown event 'bogus'") with support.check_no_resource_warning(self): with self.assertRaises(ValueError) as cm: iterparse(SIMPLE_XMLFILE, events) self.assertEqual(str(cm.exception), "unknown event 'bogus'") del cm source = io.BytesIO( b"\n" b"text\n") events = ("start-ns",) context = iterparse(source, events) self.assertEqual([(action, elem) for action, elem in context], [ ('start-ns', ('', 'http://\xe9ffbot.org/ns')), ('start-ns', ('cl\xe9', 'http://effbot.org/ns')), ]) source = io.StringIO("junk") it = iterparse(source) action, elem = next(it) self.assertEqual((action, elem.tag), ('end', 'document')) with self.assertRaises(ET.ParseError) as cm: next(it) self.assertEqual(str(cm.exception), 'junk after document element: line 1, column 12') self.addCleanup(support.unlink, TESTFN) with open(TESTFN, "wb") as f: f.write(b"junk") it = iterparse(TESTFN) action, elem = next(it) self.assertEqual((action, elem.tag), ('end', 'document')) with support.check_no_resource_warning(self): with self.assertRaises(ET.ParseError) as cm: next(it) self.assertEqual(str(cm.exception), 'junk after document element: line 1, column 12') del cm, it def test_writefile(self): elem = ET.Element("tag") elem.text = "text" self.serialize_check(elem, 'text') ET.SubElement(elem, "subtag").text = "subtext" self.serialize_check(elem, 'textsubtext') # Test tag suppression elem.tag = None self.serialize_check(elem, 'textsubtext') elem.insert(0, ET.Comment("comment")) self.serialize_check(elem, 'textsubtext') # assumes 1.3 elem[0] = ET.PI("key", "value") self.serialize_check(elem, 'textsubtext') def test_custom_builder(self): # Test parser w. custom builder. with open(SIMPLE_XMLFILE) as f: data = f.read() class Builder(list): def start(self, tag, attrib): self.append(("start", tag)) def end(self, tag): self.append(("end", tag)) def data(self, text): pass builder = Builder() parser = ET.XMLParser(target=builder) parser.feed(data) self.assertEqual(builder, [ ('start', 'root'), ('start', 'element'), ('end', 'element'), ('start', 'element'), ('end', 'element'), ('start', 'empty-element'), ('end', 'empty-element'), ('end', 'root'), ]) with open(SIMPLE_NS_XMLFILE) as f: data = f.read() class Builder(list): def start(self, tag, attrib): self.append(("start", tag)) def end(self, tag): self.append(("end", tag)) def data(self, text): pass def pi(self, target, data): self.append(("pi", target, data)) def comment(self, data): self.append(("comment", data)) builder = Builder() parser = ET.XMLParser(target=builder) parser.feed(data) self.assertEqual(builder, [ ('pi', 'pi', 'data'), ('comment', ' comment '), ('start', '{namespace}root'), ('start', '{namespace}element'), ('end', '{namespace}element'), ('start', '{namespace}element'), ('end', '{namespace}element'), ('start', '{namespace}empty-element'), ('end', '{namespace}empty-element'), ('end', '{namespace}root'), ]) # Element.getchildren() and ElementTree.getiterator() are deprecated. @checkwarnings(("This method will be removed in future versions. " "Use .+ instead.", (DeprecationWarning, PendingDeprecationWarning))) def test_getchildren(self): # Test Element.getchildren() with open(SIMPLE_XMLFILE, "rb") as f: tree = ET.parse(f) self.assertEqual([summarize_list(elem.getchildren()) for elem in tree.getroot().iter()], [ ['element', 'element', 'empty-element'], [], [], [], ]) self.assertEqual([summarize_list(elem.getchildren()) for elem in tree.getiterator()], [ ['element', 'element', 'empty-element'], [], [], [], ]) elem = ET.XML(SAMPLE_XML) self.assertEqual(len(elem.getchildren()), 3) self.assertEqual(len(elem[2].getchildren()), 1) self.assertEqual(elem[:], elem.getchildren()) child1 = elem[0] child2 = elem[2] del elem[1:2] self.assertEqual(len(elem.getchildren()), 2) self.assertEqual(child1, elem[0]) self.assertEqual(child2, elem[1]) elem[0:2] = [child2, child1] self.assertEqual(child2, elem[0]) self.assertEqual(child1, elem[1]) self.assertNotEqual(child1, elem[0]) elem.clear() self.assertEqual(elem.getchildren(), []) def test_writestring(self): elem = ET.XML("text") self.assertEqual(ET.tostring(elem), b'text') elem = ET.fromstring("text") self.assertEqual(ET.tostring(elem), b'text') def test_encoding(self): def check(encoding, body=''): xml = ("%s" % (encoding, body)) self.assertEqual(ET.XML(xml.encode(encoding)).text, body) self.assertEqual(ET.XML(xml).text, body) check("ascii", 'a') check("us-ascii", 'a') check("iso-8859-1", '\xbd') check("iso-8859-15", '\u20ac') check("cp437", '\u221a') check("mac-roman", '\u02da') def xml(encoding): return "" % encoding def bxml(encoding): return xml(encoding).encode(encoding) supported_encodings = [ 'ascii', 'utf-8', 'utf-8-sig', 'utf-16', 'utf-16be', 'utf-16le', 'iso8859-1', 'iso8859-2', 'iso8859-3', 'iso8859-4', 'iso8859-5', 'iso8859-6', 'iso8859-7', 'iso8859-8', 'iso8859-9', 'iso8859-10', 'iso8859-13', 'iso8859-14', 'iso8859-15', 'iso8859-16', 'cp437', 'cp720', 'cp737', 'cp775', 'cp850', 'cp852', 'cp855', 'cp856', 'cp857', 'cp858', 'cp860', 'cp861', 'cp862', 'cp863', 'cp865', 'cp866', 'cp869', 'cp874', 'cp1006', 'cp1125', 'cp1250', 'cp1251', 'cp1252', 'cp1253', 'cp1254', 'cp1255', 'cp1256', 'cp1257', 'cp1258', 'mac-cyrillic', 'mac-greek', 'mac-iceland', 'mac-latin2', 'mac-roman', 'mac-turkish', 'iso2022-jp', 'iso2022-jp-1', 'iso2022-jp-2', 'iso2022-jp-2004', 'iso2022-jp-3', 'iso2022-jp-ext', 'koi8-r', 'koi8-t', 'koi8-u', 'kz1048', 'hz', 'ptcp154', ] for encoding in supported_encodings: self.assertEqual(ET.tostring(ET.XML(bxml(encoding))), b'') unsupported_ascii_compatible_encodings = [ 'big5', 'big5hkscs', 'cp932', 'cp949', 'cp950', 'euc-jp', 'euc-jis-2004', 'euc-jisx0213', 'euc-kr', 'gb2312', 'gbk', 'gb18030', 'iso2022-kr', 'johab', 'shift-jis', 'shift-jis-2004', 'shift-jisx0213', 'utf-7', ] for encoding in unsupported_ascii_compatible_encodings: self.assertRaises(ValueError, ET.XML, bxml(encoding)) unsupported_ascii_incompatible_encodings = [ 'cp037', 'cp424', 'cp500', 'cp864', 'cp875', 'cp1026', 'cp1140', 'utf_32', 'utf_32_be', 'utf_32_le', ] for encoding in unsupported_ascii_incompatible_encodings: self.assertRaises(ET.ParseError, ET.XML, bxml(encoding)) self.assertRaises(ValueError, ET.XML, xml('undefined').encode('ascii')) self.assertRaises(LookupError, ET.XML, xml('xxx').encode('ascii')) def test_methods(self): # Test serialization methods. e = ET.XML("") e.tail = "\n" self.assertEqual(serialize(e), '\n') self.assertEqual(serialize(e, method=None), '\n') self.assertEqual(serialize(e, method="xml"), '\n') self.assertEqual(serialize(e, method="html"), '\n') self.assertEqual(serialize(e, method="text"), '1 < 2\n') def test_issue18347(self): e = ET.XML('text') self.assertEqual(serialize(e), 'text') self.assertEqual(serialize(e, method="html"), 'text') def test_entity(self): # Test entity handling. # 1) good entities e = ET.XML("test") self.assertEqual(serialize(e, encoding="us-ascii"), b'test') self.serialize_check(e, 'test') # 2) bad entities with self.assertRaises(ET.ParseError) as cm: ET.XML("&entity;") self.assertEqual(str(cm.exception), 'undefined entity: line 1, column 10') with self.assertRaises(ET.ParseError) as cm: ET.XML(ENTITY_XML) self.assertEqual(str(cm.exception), 'undefined entity &entity;: line 5, column 10') # 3) custom entity parser = ET.XMLParser() parser.entity["entity"] = "text" parser.feed(ENTITY_XML) root = parser.close() self.serialize_check(root, 'text') def test_namespace(self): # Test namespace issues. # 1) xml namespace elem = ET.XML("") self.serialize_check(elem, '') # 1.1 # 2) other "well-known" namespaces elem = ET.XML("") self.serialize_check(elem, '') # 2.1 elem = ET.XML("") self.serialize_check(elem, '') # 2.2 elem = ET.XML("") self.serialize_check(elem, '') # 2.3 # 3) unknown namespaces elem = ET.XML(SAMPLE_XML_NS) self.serialize_check(elem, '\n' ' text\n' ' \n' ' \n' ' subtext\n' ' \n' '') def test_qname(self): # Test QName handling. # 1) decorated tags elem = ET.Element("{uri}tag") self.serialize_check(elem, '') # 1.1 elem = ET.Element(ET.QName("{uri}tag")) self.serialize_check(elem, '') # 1.2 elem = ET.Element(ET.QName("uri", "tag")) self.serialize_check(elem, '') # 1.3 elem = ET.Element(ET.QName("uri", "tag")) subelem = ET.SubElement(elem, ET.QName("uri", "tag1")) subelem = ET.SubElement(elem, ET.QName("uri", "tag2")) self.serialize_check(elem, '') # 1.4 # 2) decorated attributes elem.clear() elem.attrib["{uri}key"] = "value" self.serialize_check(elem, '') # 2.1 elem.clear() elem.attrib[ET.QName("{uri}key")] = "value" self.serialize_check(elem, '') # 2.2 # 3) decorated values are not converted by default, but the # QName wrapper can be used for values elem.clear() elem.attrib["{uri}key"] = "{uri}value" self.serialize_check(elem, '') # 3.1 elem.clear() elem.attrib["{uri}key"] = ET.QName("{uri}value") self.serialize_check(elem, '') # 3.2 elem.clear() subelem = ET.Element("tag") subelem.attrib["{uri1}key"] = ET.QName("{uri2}value") elem.append(subelem) elem.append(subelem) self.serialize_check(elem, '' '' '' '') # 3.3 # 4) Direct QName tests self.assertEqual(str(ET.QName('ns', 'tag')), '{ns}tag') self.assertEqual(str(ET.QName('{ns}tag')), '{ns}tag') q1 = ET.QName('ns', 'tag') q2 = ET.QName('ns', 'tag') self.assertEqual(q1, q2) q2 = ET.QName('ns', 'other-tag') self.assertNotEqual(q1, q2) self.assertNotEqual(q1, 'ns:tag') self.assertEqual(q1, '{ns}tag') def test_doctype_public(self): # Test PUBLIC doctype. elem = ET.XML('' 'text') def test_xpath_tokenizer(self): # Test the XPath tokenizer. from xml.etree import ElementPath def check(p, expected): self.assertEqual([op or tag for op, tag in ElementPath.xpath_tokenizer(p)], expected) # tests from the xml specification check("*", ['*']) check("text()", ['text', '()']) check("@name", ['@', 'name']) check("@*", ['@', '*']) check("para[1]", ['para', '[', '1', ']']) check("para[last()]", ['para', '[', 'last', '()', ']']) check("*/para", ['*', '/', 'para']) check("/doc/chapter[5]/section[2]", ['/', 'doc', '/', 'chapter', '[', '5', ']', '/', 'section', '[', '2', ']']) check("chapter//para", ['chapter', '//', 'para']) check("//para", ['//', 'para']) check("//olist/item", ['//', 'olist', '/', 'item']) check(".", ['.']) check(".//para", ['.', '//', 'para']) check("..", ['..']) check("../@lang", ['..', '/', '@', 'lang']) check("chapter[title]", ['chapter', '[', 'title', ']']) check("employee[@secretary and @assistant]", ['employee', '[', '@', 'secretary', '', 'and', '', '@', 'assistant', ']']) # additional tests check("{http://spam}egg", ['{http://spam}egg']) check("./spam.egg", ['.', '/', 'spam.egg']) check(".//{http://spam}egg", ['.', '//', '{http://spam}egg']) def test_processinginstruction(self): # Test ProcessingInstruction directly self.assertEqual(ET.tostring(ET.ProcessingInstruction('test', 'instruction')), b'') self.assertEqual(ET.tostring(ET.PI('test', 'instruction')), b'') # Issue #2746 self.assertEqual(ET.tostring(ET.PI('test', '')), b'?>') self.assertEqual(ET.tostring(ET.PI('test', '\xe3'), 'latin-1'), b"\n" b"\xe3?>") def test_html_empty_elems_serialization(self): # issue 15970 # from http://www.w3.org/TR/html401/index/elements.html for element in ['AREA', 'BASE', 'BASEFONT', 'BR', 'COL', 'FRAME', 'HR', 'IMG', 'INPUT', 'ISINDEX', 'LINK', 'META', 'PARAM']: for elem in [element, element.lower()]: expected = '<%s>' % elem serialized = serialize(ET.XML('<%s />' % elem), method='html') self.assertEqual(serialized, expected) serialized = serialize(ET.XML('<%s>' % (elem,elem)), method='html') self.assertEqual(serialized, expected) class XMLPullParserTest(unittest.TestCase): def _feed(self, parser, data, chunk_size=None): if chunk_size is None: parser.feed(data) else: for i in range(0, len(data), chunk_size): parser.feed(data[i:i+chunk_size]) def assert_event_tags(self, parser, expected): events = parser.read_events() self.assertEqual([(action, elem.tag) for action, elem in events], expected) def test_simple_xml(self): for chunk_size in (None, 1, 5): with self.subTest(chunk_size=chunk_size): parser = ET.XMLPullParser() self.assert_event_tags(parser, []) self._feed(parser, "\n", chunk_size) self.assert_event_tags(parser, []) self._feed(parser, "\n text\n", chunk_size) self.assert_event_tags(parser, [('end', 'element')]) self._feed(parser, "texttail\n", chunk_size) self._feed(parser, "\n", chunk_size) self.assert_event_tags(parser, [ ('end', 'element'), ('end', 'empty-element'), ]) self._feed(parser, "\n", chunk_size) self.assert_event_tags(parser, [('end', 'root')]) self.assertIsNone(parser.close()) def test_feed_while_iterating(self): parser = ET.XMLPullParser() it = parser.read_events() self._feed(parser, "\n text\n") action, elem = next(it) self.assertEqual((action, elem.tag), ('end', 'element')) self._feed(parser, "\n") action, elem = next(it) self.assertEqual((action, elem.tag), ('end', 'root')) with self.assertRaises(StopIteration): next(it) def test_simple_xml_with_ns(self): parser = ET.XMLPullParser() self.assert_event_tags(parser, []) self._feed(parser, "\n") self.assert_event_tags(parser, []) self._feed(parser, "\n") self.assert_event_tags(parser, []) self._feed(parser, "text\n") self.assert_event_tags(parser, [('end', '{namespace}element')]) self._feed(parser, "texttail\n") self._feed(parser, "\n") self.assert_event_tags(parser, [ ('end', '{namespace}element'), ('end', '{namespace}empty-element'), ]) self._feed(parser, "\n") self.assert_event_tags(parser, [('end', '{namespace}root')]) self.assertIsNone(parser.close()) def test_ns_events(self): parser = ET.XMLPullParser(events=('start-ns', 'end-ns')) self._feed(parser, "\n") self._feed(parser, "\n") self.assertEqual( list(parser.read_events()), [('start-ns', ('', 'namespace'))]) self._feed(parser, "text\n") self._feed(parser, "texttail\n") self._feed(parser, "\n") self._feed(parser, "\n") self.assertEqual(list(parser.read_events()), [('end-ns', None)]) self.assertIsNone(parser.close()) def test_events(self): parser = ET.XMLPullParser(events=()) self._feed(parser, "\n") self.assert_event_tags(parser, []) parser = ET.XMLPullParser(events=('start', 'end')) self._feed(parser, "\n") self.assert_event_tags(parser, []) self._feed(parser, "\n") self.assert_event_tags(parser, [('start', 'root')]) self._feed(parser, "text\n") self.assert_event_tags(parser, [('end', 'element')]) self._feed(parser, "texttail\n") self.assert_event_tags(parser, [ ('start', '{foo}element'), ('start', '{foo}empty-element'), ('end', '{foo}empty-element'), ('end', '{foo}element'), ]) self._feed(parser, "") self.assertIsNone(parser.close()) self.assert_event_tags(parser, [('end', 'root')]) parser = ET.XMLPullParser(events=('start',)) self._feed(parser, "\n") self.assert_event_tags(parser, []) self._feed(parser, "\n") self.assert_event_tags(parser, [('start', 'root')]) self._feed(parser, "text\n") self.assert_event_tags(parser, []) self._feed(parser, "texttail\n") self.assert_event_tags(parser, [ ('start', '{foo}element'), ('start', '{foo}empty-element'), ]) self._feed(parser, "") self.assertIsNone(parser.close()) def test_events_sequence(self): # Test that events can be some sequence that's not just a tuple or list eventset = {'end', 'start'} parser = ET.XMLPullParser(events=eventset) self._feed(parser, "bar") self.assert_event_tags(parser, [('start', 'foo'), ('end', 'foo')]) class DummyIter: def __init__(self): self.events = iter(['start', 'end', 'start-ns']) def __iter__(self): return self def __next__(self): return next(self.events) parser = ET.XMLPullParser(events=DummyIter()) self._feed(parser, "bar") self.assert_event_tags(parser, [('start', 'foo'), ('end', 'foo')]) def test_unknown_event(self): with self.assertRaises(ValueError): ET.XMLPullParser(events=('start', 'end', 'bogus')) # # xinclude tests (samples from appendix C of the xinclude specification) XINCLUDE = {} XINCLUDE["C1.xml"] = """\

120 Mz is adequate for an average home user.

""" XINCLUDE["disclaimer.xml"] = """\

The opinions represented herein represent those of the individual and should not be interpreted as official policy endorsed by this organization.

""" XINCLUDE["C2.xml"] = """\

This document has been accessed times.

""" XINCLUDE["count.txt"] = "324387" XINCLUDE["C2b.xml"] = """\

This document has been accessed times.

""" XINCLUDE["C3.xml"] = """\

The following is the source of the "data.xml" resource:

""" XINCLUDE["data.xml"] = """\ """ XINCLUDE["C5.xml"] = """\ """ XINCLUDE["default.xml"] = """\

Example.

""".format(html.escape(SIMPLE_XMLFILE, True)) # # badly formatted xi:include tags XINCLUDE_BAD = {} XINCLUDE_BAD["B1.xml"] = """\

120 Mz is adequate for an average home user.

""" XINCLUDE_BAD["B2.xml"] = """\
""" class XIncludeTest(unittest.TestCase): def xinclude_loader(self, href, parse="xml", encoding=None): try: data = XINCLUDE[href] except KeyError: raise OSError("resource not found") if parse == "xml": data = ET.XML(data) return data def none_loader(self, href, parser, encoding=None): return None def _my_loader(self, href, parse): # Used to avoid a test-dependency problem where the default loader # of ElementInclude uses the pyET parser for cET tests. if parse == 'xml': with open(href, 'rb') as f: return ET.parse(f).getroot() else: return None def test_xinclude_default(self): from xml.etree import ElementInclude doc = self.xinclude_loader('default.xml') ElementInclude.include(doc, self._my_loader) self.assertEqual(serialize(doc), '\n' '

Example.

\n' ' \n' ' text\n' ' texttail\n' ' \n' '\n' '
') def test_xinclude(self): from xml.etree import ElementInclude # Basic inclusion example (XInclude C.1) document = self.xinclude_loader("C1.xml") ElementInclude.include(document, self.xinclude_loader) self.assertEqual(serialize(document), '\n' '

120 Mz is adequate for an average home user.

\n' ' \n' '

The opinions represented herein represent those of the individual\n' ' and should not be interpreted as official policy endorsed by this\n' ' organization.

\n' '
\n' '
') # C1 # Textual inclusion example (XInclude C.2) document = self.xinclude_loader("C2.xml") ElementInclude.include(document, self.xinclude_loader) self.assertEqual(serialize(document), '\n' '

This document has been accessed\n' ' 324387 times.

\n' '
') # C2 # Textual inclusion after sibling element (based on modified XInclude C.2) document = self.xinclude_loader("C2b.xml") ElementInclude.include(document, self.xinclude_loader) self.assertEqual(serialize(document), '\n' '

This document has been accessed\n' ' 324387 times.

\n' '
') # C2b # Textual inclusion of XML example (XInclude C.3) document = self.xinclude_loader("C3.xml") ElementInclude.include(document, self.xinclude_loader) self.assertEqual(serialize(document), '\n' '

The following is the source of the "data.xml" resource:

\n' " <?xml version='1.0'?>\n" '<data>\n' ' <item><![CDATA[Brooks & Shields]]></item>\n' '</data>\n' '\n' '
') # C3 # Fallback example (XInclude C.5) # Note! Fallback support is not yet implemented document = self.xinclude_loader("C5.xml") with self.assertRaises(OSError) as cm: ElementInclude.include(document, self.xinclude_loader) self.assertEqual(str(cm.exception), 'resource not found') self.assertEqual(serialize(document), '
\n' ' \n' ' \n' ' \n' ' Report error\n' ' \n' ' \n' ' \n' '
') # C5 def test_xinclude_failures(self): from xml.etree import ElementInclude # Test failure to locate included XML file. document = ET.XML(XINCLUDE["C1.xml"]) with self.assertRaises(ElementInclude.FatalIncludeError) as cm: ElementInclude.include(document, loader=self.none_loader) self.assertEqual(str(cm.exception), "cannot load 'disclaimer.xml' as 'xml'") # Test failure to locate included text file. document = ET.XML(XINCLUDE["C2.xml"]) with self.assertRaises(ElementInclude.FatalIncludeError) as cm: ElementInclude.include(document, loader=self.none_loader) self.assertEqual(str(cm.exception), "cannot load 'count.txt' as 'text'") # Test bad parse type. document = ET.XML(XINCLUDE_BAD["B1.xml"]) with self.assertRaises(ElementInclude.FatalIncludeError) as cm: ElementInclude.include(document, loader=self.none_loader) self.assertEqual(str(cm.exception), "unknown parse type in xi:include tag ('BAD_TYPE')") # Test xi:fallback outside xi:include. document = ET.XML(XINCLUDE_BAD["B2.xml"]) with self.assertRaises(ElementInclude.FatalIncludeError) as cm: ElementInclude.include(document, loader=self.none_loader) self.assertEqual(str(cm.exception), "xi:fallback tag must be child of xi:include " "('{http://www.w3.org/2001/XInclude}fallback')") # -------------------------------------------------------------------- # reported bugs class BugsTest(unittest.TestCase): def test_bug_xmltoolkit21(self): # marshaller gives obscure errors for non-string values def check(elem): with self.assertRaises(TypeError) as cm: serialize(elem) self.assertEqual(str(cm.exception), 'cannot serialize 123 (type int)') elem = ET.Element(123) check(elem) # tag elem = ET.Element("elem") elem.text = 123 check(elem) # text elem = ET.Element("elem") elem.tail = 123 check(elem) # tail elem = ET.Element("elem") elem.set(123, "123") check(elem) # attribute key elem = ET.Element("elem") elem.set("123", 123) check(elem) # attribute value def test_bug_xmltoolkit25(self): # typo in ElementTree.findtext elem = ET.XML(SAMPLE_XML) tree = ET.ElementTree(elem) self.assertEqual(tree.findtext("tag"), 'text') self.assertEqual(tree.findtext("section/tag"), 'subtext') def test_bug_xmltoolkit28(self): # .//tag causes exceptions tree = ET.XML("
") self.assertEqual(summarize_list(tree.findall(".//thead")), []) self.assertEqual(summarize_list(tree.findall(".//tbody")), ['tbody']) def test_bug_xmltoolkitX1(self): # dump() doesn't flush the output buffer tree = ET.XML("
") with support.captured_stdout() as stdout: ET.dump(tree) self.assertEqual(stdout.getvalue(), '
\n') def test_bug_xmltoolkit39(self): # non-ascii element and attribute names doesn't work tree = ET.XML(b"") self.assertEqual(ET.tostring(tree, "utf-8"), b'') tree = ET.XML(b"" b"") self.assertEqual(tree.attrib, {'\xe4ttr': 'v\xe4lue'}) self.assertEqual(ET.tostring(tree, "utf-8"), b'') tree = ET.XML(b"" b'text') self.assertEqual(ET.tostring(tree, "utf-8"), b'text') tree = ET.Element("t\u00e4g") self.assertEqual(ET.tostring(tree, "utf-8"), b'') tree = ET.Element("tag") tree.set("\u00e4ttr", "v\u00e4lue") self.assertEqual(ET.tostring(tree, "utf-8"), b'') def test_bug_xmltoolkit54(self): # problems handling internally defined entities e = ET.XML("]>" '&ldots;') self.assertEqual(serialize(e, encoding="us-ascii"), b'') self.assertEqual(serialize(e), '\u8230') def test_bug_xmltoolkit55(self): # make sure we're reporting the first error, not the last with self.assertRaises(ET.ParseError) as cm: ET.XML(b"" b'&ldots;&ndots;&rdots;') self.assertEqual(str(cm.exception), 'undefined entity &ldots;: line 1, column 36') def test_bug_xmltoolkit60(self): # Handle crash in stream source. class ExceptionFile: def read(self, x): raise OSError self.assertRaises(OSError, ET.parse, ExceptionFile()) def test_bug_xmltoolkit62(self): # Don't crash when using custom entities. ENTITIES = {'rsquo': '\u2019', 'lsquo': '\u2018'} parser = ET.XMLParser() parser.entity.update(ENTITIES) parser.feed(""" A new cultivar of Begonia plant named ‘BCT9801BEG’. """) t = parser.close() self.assertEqual(t.find('.//paragraph').text, 'A new cultivar of Begonia plant named \u2018BCT9801BEG\u2019.') @unittest.skipIf(sys.gettrace(), "Skips under coverage.") def test_bug_xmltoolkit63(self): # Check reference leak. def xmltoolkit63(): tree = ET.TreeBuilder() tree.start("tag", {}) tree.data("text") tree.end("tag") xmltoolkit63() count = sys.getrefcount(None) for i in range(1000): xmltoolkit63() self.assertEqual(sys.getrefcount(None), count) def test_bug_200708_newline(self): # Preserve newlines in attributes. e = ET.Element('SomeTag', text="def _f():\n return 3\n") self.assertEqual(ET.tostring(e), b'') self.assertEqual(ET.XML(ET.tostring(e)).get("text"), 'def _f():\n return 3\n') self.assertEqual(ET.tostring(ET.XML(ET.tostring(e))), b'') def test_bug_200708_close(self): # Test default builder. parser = ET.XMLParser() # default parser.feed("some text") self.assertEqual(parser.close().tag, 'element') # Test custom builder. class EchoTarget: def close(self): return ET.Element("element") # simulate root parser = ET.XMLParser(target=EchoTarget()) parser.feed("some text") self.assertEqual(parser.close().tag, 'element') def test_bug_200709_default_namespace(self): e = ET.Element("{default}elem") s = ET.SubElement(e, "{default}elem") self.assertEqual(serialize(e, default_namespace="default"), # 1 '') e = ET.Element("{default}elem") s = ET.SubElement(e, "{default}elem") s = ET.SubElement(e, "{not-default}elem") self.assertEqual(serialize(e, default_namespace="default"), # 2 '' '' '' '') e = ET.Element("{default}elem") s = ET.SubElement(e, "{default}elem") s = ET.SubElement(e, "elem") # unprefixed name with self.assertRaises(ValueError) as cm: serialize(e, default_namespace="default") # 3 self.assertEqual(str(cm.exception), 'cannot use non-qualified names with default_namespace option') def test_bug_200709_register_namespace(self): e = ET.Element("{http://namespace.invalid/does/not/exist/}title") self.assertEqual(ET.tostring(e), b'') ET.register_namespace("foo", "http://namespace.invalid/does/not/exist/") e = ET.Element("{http://namespace.invalid/does/not/exist/}title") self.assertEqual(ET.tostring(e), b'') # And the Dublin Core namespace is in the default list: e = ET.Element("{http://purl.org/dc/elements/1.1/}title") self.assertEqual(ET.tostring(e), b'') def test_bug_200709_element_comment(self): # Not sure if this can be fixed, really (since the serializer needs # ET.Comment, not cET.comment). a = ET.Element('a') a.append(ET.Comment('foo')) self.assertEqual(a[0].tag, ET.Comment) a = ET.Element('a') a.append(ET.PI('foo')) self.assertEqual(a[0].tag, ET.PI) def test_bug_200709_element_insert(self): a = ET.Element('a') b = ET.SubElement(a, 'b') c = ET.SubElement(a, 'c') d = ET.Element('d') a.insert(0, d) self.assertEqual(summarize_list(a), ['d', 'b', 'c']) a.insert(-1, d) self.assertEqual(summarize_list(a), ['d', 'b', 'd', 'c']) def test_bug_200709_iter_comment(self): a = ET.Element('a') b = ET.SubElement(a, 'b') comment_b = ET.Comment("TEST-b") b.append(comment_b) self.assertEqual(summarize_list(a.iter(ET.Comment)), [ET.Comment]) # -------------------------------------------------------------------- # reported on bugs.python.org def test_bug_1534630(self): bob = ET.TreeBuilder() e = bob.data("data") e = bob.start("tag", {}) e = bob.end("tag") e = bob.close() self.assertEqual(serialize(e), '') def test_issue6233(self): e = ET.XML(b"" b't\xc3\xa3g') self.assertEqual(ET.tostring(e, 'ascii'), b"\n" b'tãg') e = ET.XML(b"" b't\xe3g') self.assertEqual(ET.tostring(e, 'ascii'), b"\n" b'tãg') def test_issue3151(self): e = ET.XML('') self.assertEqual(e.tag, '{${stuff}}localname') t = ET.ElementTree(e) self.assertEqual(ET.tostring(e), b'') def test_issue6565(self): elem = ET.XML("") self.assertEqual(summarize_list(elem), ['tag']) newelem = ET.XML(SAMPLE_XML) elem[:] = newelem[:] self.assertEqual(summarize_list(elem), ['tag', 'tag', 'section']) def test_issue10777(self): # Registering a namespace twice caused a "dictionary changed size during # iteration" bug. ET.register_namespace('test10777', 'http://myuri/') ET.register_namespace('test10777', 'http://myuri/') def test_lost_text(self): # Issue #25902: Borrowed text can disappear class Text: def __bool__(self): e.text = 'changed' return True e = ET.Element('tag') e.text = Text() i = e.itertext() t = next(i) self.assertIsInstance(t, Text) self.assertIsInstance(e.text, str) self.assertEqual(e.text, 'changed') def test_lost_tail(self): # Issue #25902: Borrowed tail can disappear class Text: def __bool__(self): e[0].tail = 'changed' return True e = ET.Element('root') e.append(ET.Element('tag')) e[0].tail = Text() i = e.itertext() t = next(i) self.assertIsInstance(t, Text) self.assertIsInstance(e[0].tail, str) self.assertEqual(e[0].tail, 'changed') def test_lost_elem(self): # Issue #25902: Borrowed element can disappear class Tag: def __eq__(self, other): e[0] = ET.Element('changed') next(i) return True e = ET.Element('root') e.append(ET.Element(Tag())) e.append(ET.Element('tag')) i = e.iter('tag') try: t = next(i) except ValueError: self.skipTest('generators are not reentrant') self.assertIsInstance(t.tag, Tag) self.assertIsInstance(e[0].tag, str) self.assertEqual(e[0].tag, 'changed') def check_expat224_utf8_bug(self, text): xml = b'' % text root = ET.XML(xml) self.assertEqual(root.get('b'), text.decode('utf-8')) def test_expat224_utf8_bug(self): # bpo-31170: Expat 2.2.3 had a bug in its UTF-8 decoder. # Check that Expat 2.2.4 fixed the bug. # # Test buffer bounds at odd and even positions. text = b'\xc3\xa0' * 1024 self.check_expat224_utf8_bug(text) text = b'x' + b'\xc3\xa0' * 1024 self.check_expat224_utf8_bug(text) def test_expat224_utf8_bug_file(self): with open(UTF8_BUG_XMLFILE, 'rb') as fp: raw = fp.read() root = ET.fromstring(raw) xmlattr = root.get('b') # "Parse" manually the XML file to extract the value of the 'b' # attribute of the XML element text = raw.decode('utf-8').strip() text = text.replace('\r\n', ' ') text = text[6:-4] self.assertEqual(root.get('b'), text) # -------------------------------------------------------------------- class BasicElementTest(ElementTestCase, unittest.TestCase): def test_augmentation_type_errors(self): e = ET.Element('joe') self.assertRaises(TypeError, e.append, 'b') self.assertRaises(TypeError, e.extend, [ET.Element('bar'), 'foo']) self.assertRaises(TypeError, e.insert, 0, 'foo') def test_cyclic_gc(self): class Dummy: pass # Test the shortest cycle: d->element->d d = Dummy() d.dummyref = ET.Element('joe', attr=d) wref = weakref.ref(d) del d gc_collect() self.assertIsNone(wref()) # A longer cycle: d->e->e2->d e = ET.Element('joe') d = Dummy() d.dummyref = e wref = weakref.ref(d) e2 = ET.SubElement(e, 'foo', attr=d) del d, e, e2 gc_collect() self.assertIsNone(wref()) # A cycle between Element objects as children of one another # e1->e2->e3->e1 e1 = ET.Element('e1') e2 = ET.Element('e2') e3 = ET.Element('e3') e1.append(e2) e2.append(e2) e3.append(e1) wref = weakref.ref(e1) del e1, e2, e3 gc_collect() self.assertIsNone(wref()) def test_weakref(self): flag = False def wref_cb(w): nonlocal flag flag = True e = ET.Element('e') wref = weakref.ref(e, wref_cb) self.assertEqual(wref().tag, 'e') del e self.assertEqual(flag, True) self.assertEqual(wref(), None) def test_get_keyword_args(self): e1 = ET.Element('foo' , x=1, y=2, z=3) self.assertEqual(e1.get('x', default=7), 1) self.assertEqual(e1.get('w', default=7), 7) def test_pickle(self): # issue #16076: the C implementation wasn't pickleable. for proto in range(2, pickle.HIGHEST_PROTOCOL + 1): for dumper, loader in product(self.modules, repeat=2): e = dumper.Element('foo', bar=42) e.text = "text goes here" e.tail = "opposite of head" dumper.SubElement(e, 'child').append(dumper.Element('grandchild')) e.append(dumper.Element('child')) e.findall('.//grandchild')[0].set('attr', 'other value') e2 = self.pickleRoundTrip(e, 'xml.etree.ElementTree', dumper, loader, proto) self.assertEqual(e2.tag, 'foo') self.assertEqual(e2.attrib['bar'], 42) self.assertEqual(len(e2), 2) self.assertEqualElements(e, e2) def test_pickle_issue18997(self): for proto in range(2, pickle.HIGHEST_PROTOCOL + 1): for dumper, loader in product(self.modules, repeat=2): XMLTEXT = """ 4 """ e1 = dumper.fromstring(XMLTEXT) if hasattr(e1, '__getstate__'): self.assertEqual(e1.__getstate__()['tag'], 'group') e2 = self.pickleRoundTrip(e1, 'xml.etree.ElementTree', dumper, loader, proto) self.assertEqual(e2.tag, 'group') self.assertEqual(e2[0].tag, 'dogs') class BadElementTest(ElementTestCase, unittest.TestCase): def test_extend_mutable_list(self): class X: @property def __class__(self): L[:] = [ET.Element('baz')] return ET.Element L = [X()] e = ET.Element('foo') try: e.extend(L) except TypeError: pass class Y(X, ET.Element): pass L = [Y('x')] e = ET.Element('foo') e.extend(L) def test_extend_mutable_list2(self): class X: @property def __class__(self): del L[:] return ET.Element L = [X(), ET.Element('baz')] e = ET.Element('foo') try: e.extend(L) except TypeError: pass class Y(X, ET.Element): pass L = [Y('bar'), ET.Element('baz')] e = ET.Element('foo') e.extend(L) def test_remove_with_mutating(self): class X(ET.Element): def __eq__(self, o): del e[:] return False e = ET.Element('foo') e.extend([X('bar')]) self.assertRaises(ValueError, e.remove, ET.Element('baz')) e = ET.Element('foo') e.extend([ET.Element('bar')]) self.assertRaises(ValueError, e.remove, X('baz')) def test_recursive_repr(self): # Issue #25455 e = ET.Element('foo') with swap_attr(e, 'tag', e): with self.assertRaises(RuntimeError): repr(e) # Should not crash def test_element_get_text(self): # Issue #27863 class X(str): def __del__(self): try: elem.text except NameError: pass b = ET.TreeBuilder() b.start('tag', {}) b.data('ABCD') b.data(X('EFGH')) b.data('IJKL') b.end('tag') elem = b.close() self.assertEqual(elem.text, 'ABCDEFGHIJKL') def test_element_get_tail(self): # Issue #27863 class X(str): def __del__(self): try: elem[0].tail except NameError: pass b = ET.TreeBuilder() b.start('root', {}) b.start('tag', {}) b.end('tag') b.data('ABCD') b.data(X('EFGH')) b.data('IJKL') b.end('root') elem = b.close() self.assertEqual(elem[0].tail, 'ABCDEFGHIJKL') def test_element_iter(self): # Issue #27863 state = { 'tag': 'tag', '_children': [None], # non-Element 'attrib': 'attr', 'tail': 'tail', 'text': 'text', } e = ET.Element('tag') try: e.__setstate__(state) except AttributeError: e.__dict__ = state it = e.iter() self.assertIs(next(it), e) self.assertRaises(AttributeError, next, it) def test_subscr(self): # Issue #27863 class X: def __index__(self): del e[:] return 1 e = ET.Element('elem') e.append(ET.Element('child')) e[:X()] # shouldn't crash e.append(ET.Element('child')) e[0:10:X()] # shouldn't crash def test_ass_subscr(self): # Issue #27863 class X: def __index__(self): e[:] = [] return 1 e = ET.Element('elem') for _ in range(10): e.insert(0, ET.Element('child')) e[0:10:X()] = [] # shouldn't crash def test_treebuilder_start(self): # Issue #27863 def element_factory(x, y): return [] b = ET.TreeBuilder(element_factory=element_factory) b.start('tag', {}) b.data('ABCD') self.assertRaises(AttributeError, b.start, 'tag2', {}) del b gc_collect() def test_treebuilder_end(self): # Issue #27863 def element_factory(x, y): return [] b = ET.TreeBuilder(element_factory=element_factory) b.start('tag', {}) b.data('ABCD') self.assertRaises(AttributeError, b.end, 'tag') del b gc_collect() class MutatingElementPath(str): def __new__(cls, elem, *args): self = str.__new__(cls, *args) self.elem = elem return self def __eq__(self, o): del self.elem[:] return True MutatingElementPath.__hash__ = str.__hash__ class BadElementPath(str): def __eq__(self, o): raise 1/0 BadElementPath.__hash__ = str.__hash__ class BadElementPathTest(ElementTestCase, unittest.TestCase): def setUp(self): super().setUp() from xml.etree import ElementPath self.path_cache = ElementPath._cache ElementPath._cache = {} def tearDown(self): from xml.etree import ElementPath ElementPath._cache = self.path_cache super().tearDown() def test_find_with_mutating(self): e = ET.Element('foo') e.extend([ET.Element('bar')]) e.find(MutatingElementPath(e, 'x')) def test_find_with_error(self): e = ET.Element('foo') e.extend([ET.Element('bar')]) try: e.find(BadElementPath('x')) except ZeroDivisionError: pass def test_findtext_with_mutating(self): e = ET.Element('foo') e.extend([ET.Element('bar')]) e.findtext(MutatingElementPath(e, 'x')) def test_findtext_with_error(self): e = ET.Element('foo') e.extend([ET.Element('bar')]) try: e.findtext(BadElementPath('x')) except ZeroDivisionError: pass def test_findall_with_mutating(self): e = ET.Element('foo') e.extend([ET.Element('bar')]) e.findall(MutatingElementPath(e, 'x')) def test_findall_with_error(self): e = ET.Element('foo') e.extend([ET.Element('bar')]) try: e.findall(BadElementPath('x')) except ZeroDivisionError: pass class ElementTreeTypeTest(unittest.TestCase): def test_istype(self): self.assertIsInstance(ET.ParseError, type) self.assertIsInstance(ET.QName, type) self.assertIsInstance(ET.ElementTree, type) self.assertIsInstance(ET.Element, type) self.assertIsInstance(ET.TreeBuilder, type) self.assertIsInstance(ET.XMLParser, type) def test_Element_subclass_trivial(self): class MyElement(ET.Element): pass mye = MyElement('foo') self.assertIsInstance(mye, ET.Element) self.assertIsInstance(mye, MyElement) self.assertEqual(mye.tag, 'foo') # test that attribute assignment works (issue 14849) mye.text = "joe" self.assertEqual(mye.text, "joe") def test_Element_subclass_constructor(self): class MyElement(ET.Element): def __init__(self, tag, attrib={}, **extra): super(MyElement, self).__init__(tag + '__', attrib, **extra) mye = MyElement('foo', {'a': 1, 'b': 2}, c=3, d=4) self.assertEqual(mye.tag, 'foo__') self.assertEqual(sorted(mye.items()), [('a', 1), ('b', 2), ('c', 3), ('d', 4)]) def test_Element_subclass_new_method(self): class MyElement(ET.Element): def newmethod(self): return self.tag mye = MyElement('joe') self.assertEqual(mye.newmethod(), 'joe') class ElementFindTest(unittest.TestCase): def test_find_simple(self): e = ET.XML(SAMPLE_XML) self.assertEqual(e.find('tag').tag, 'tag') self.assertEqual(e.find('section/tag').tag, 'tag') self.assertEqual(e.find('./tag').tag, 'tag') e[2] = ET.XML(SAMPLE_SECTION) self.assertEqual(e.find('section/nexttag').tag, 'nexttag') self.assertEqual(e.findtext('./tag'), 'text') self.assertEqual(e.findtext('section/tag'), 'subtext') # section/nexttag is found but has no text self.assertEqual(e.findtext('section/nexttag'), '') self.assertEqual(e.findtext('section/nexttag', 'default'), '') # tog doesn't exist and 'default' kicks in self.assertIsNone(e.findtext('tog')) self.assertEqual(e.findtext('tog', 'default'), 'default') # Issue #16922 self.assertEqual(ET.XML('').findtext('empty'), '') def test_find_xpath(self): LINEAR_XML = ''' ''' e = ET.XML(LINEAR_XML) # Test for numeric indexing and last() self.assertEqual(e.find('./tag[1]').attrib['class'], 'a') self.assertEqual(e.find('./tag[2]').attrib['class'], 'b') self.assertEqual(e.find('./tag[last()]').attrib['class'], 'd') self.assertEqual(e.find('./tag[last()-1]').attrib['class'], 'c') self.assertEqual(e.find('./tag[last()-2]').attrib['class'], 'b') self.assertRaisesRegex(SyntaxError, 'XPath', e.find, './tag[0]') self.assertRaisesRegex(SyntaxError, 'XPath', e.find, './tag[-1]') self.assertRaisesRegex(SyntaxError, 'XPath', e.find, './tag[last()-0]') self.assertRaisesRegex(SyntaxError, 'XPath', e.find, './tag[last()+1]') def test_findall(self): e = ET.XML(SAMPLE_XML) e[2] = ET.XML(SAMPLE_SECTION) self.assertEqual(summarize_list(e.findall('.')), ['body']) self.assertEqual(summarize_list(e.findall('tag')), ['tag', 'tag']) self.assertEqual(summarize_list(e.findall('tog')), []) self.assertEqual(summarize_list(e.findall('tog/foo')), []) self.assertEqual(summarize_list(e.findall('*')), ['tag', 'tag', 'section']) self.assertEqual(summarize_list(e.findall('.//tag')), ['tag'] * 4) self.assertEqual(summarize_list(e.findall('section/tag')), ['tag']) self.assertEqual(summarize_list(e.findall('section//tag')), ['tag'] * 2) self.assertEqual(summarize_list(e.findall('section/*')), ['tag', 'nexttag', 'nextsection']) self.assertEqual(summarize_list(e.findall('section//*')), ['tag', 'nexttag', 'nextsection', 'tag']) self.assertEqual(summarize_list(e.findall('section/.//*')), ['tag', 'nexttag', 'nextsection', 'tag']) self.assertEqual(summarize_list(e.findall('*/*')), ['tag', 'nexttag', 'nextsection']) self.assertEqual(summarize_list(e.findall('*//*')), ['tag', 'nexttag', 'nextsection', 'tag']) self.assertEqual(summarize_list(e.findall('*/tag')), ['tag']) self.assertEqual(summarize_list(e.findall('*/./tag')), ['tag']) self.assertEqual(summarize_list(e.findall('./tag')), ['tag'] * 2) self.assertEqual(summarize_list(e.findall('././tag')), ['tag'] * 2) self.assertEqual(summarize_list(e.findall('.//tag[@class]')), ['tag'] * 3) self.assertEqual(summarize_list(e.findall('.//tag[@class="a"]')), ['tag']) self.assertEqual(summarize_list(e.findall('.//tag[@class="b"]')), ['tag'] * 2) self.assertEqual(summarize_list(e.findall('.//tag[@id]')), ['tag']) self.assertEqual(summarize_list(e.findall('.//section[tag]')), ['section']) self.assertEqual(summarize_list(e.findall('.//section[element]')), []) self.assertEqual(summarize_list(e.findall('../tag')), []) self.assertEqual(summarize_list(e.findall('section/../tag')), ['tag'] * 2) self.assertEqual(e.findall('section//'), e.findall('section//*')) self.assertEqual(summarize_list(e.findall(".//section[tag='subtext']")), ['section']) self.assertEqual(summarize_list(e.findall(".//section[tag ='subtext']")), ['section']) self.assertEqual(summarize_list(e.findall(".//section[tag= 'subtext']")), ['section']) self.assertEqual(summarize_list(e.findall(".//section[tag = 'subtext']")), ['section']) self.assertEqual(summarize_list(e.findall(".//section[ tag = 'subtext' ]")), ['section']) self.assertEqual(summarize_list(e.findall(".//tag[.='subtext']")), ['tag']) self.assertEqual(summarize_list(e.findall(".//tag[. ='subtext']")), ['tag']) self.assertEqual(summarize_list(e.findall('.//tag[.= "subtext"]')), ['tag']) self.assertEqual(summarize_list(e.findall('.//tag[ . = "subtext" ]')), ['tag']) self.assertEqual(summarize_list(e.findall(".//tag[. = 'subtext']")), ['tag']) self.assertEqual(summarize_list(e.findall(".//tag[. = 'subtext ']")), []) self.assertEqual(summarize_list(e.findall(".//tag[.= ' subtext']")), []) # duplicate section => 2x tag matches e[1] = e[2] self.assertEqual(summarize_list(e.findall(".//section[tag = 'subtext']")), ['section', 'section']) self.assertEqual(summarize_list(e.findall(".//tag[. = 'subtext']")), ['tag', 'tag']) def test_test_find_with_ns(self): e = ET.XML(SAMPLE_XML_NS) self.assertEqual(summarize_list(e.findall('tag')), []) self.assertEqual( summarize_list(e.findall("{http://effbot.org/ns}tag")), ['{http://effbot.org/ns}tag'] * 2) self.assertEqual( summarize_list(e.findall(".//{http://effbot.org/ns}tag")), ['{http://effbot.org/ns}tag'] * 3) def test_findall_different_nsmaps(self): root = ET.XML(''' ''') nsmap = {'xx': 'X'} self.assertEqual(len(root.findall(".//xx:b", namespaces=nsmap)), 2) self.assertEqual(len(root.findall(".//b", namespaces=nsmap)), 2) nsmap = {'xx': 'Y'} self.assertEqual(len(root.findall(".//xx:b", namespaces=nsmap)), 1) self.assertEqual(len(root.findall(".//b", namespaces=nsmap)), 2) def test_bad_find(self): e = ET.XML(SAMPLE_XML) with self.assertRaisesRegex(SyntaxError, 'cannot use absolute path'): e.findall('/tag') def test_find_through_ElementTree(self): e = ET.XML(SAMPLE_XML) self.assertEqual(ET.ElementTree(e).find('tag').tag, 'tag') self.assertEqual(ET.ElementTree(e).findtext('tag'), 'text') self.assertEqual(summarize_list(ET.ElementTree(e).findall('tag')), ['tag'] * 2) # this produces a warning msg = ("This search is broken in 1.3 and earlier, and will be fixed " "in a future version. If you rely on the current behaviour, " "change it to '.+'") with self.assertWarnsRegex(FutureWarning, msg): it = ET.ElementTree(e).findall('//tag') self.assertEqual(summarize_list(it), ['tag'] * 3) class ElementIterTest(unittest.TestCase): def _ilist(self, elem, tag=None): return summarize_list(elem.iter(tag)) def test_basic(self): doc = ET.XML("this is a paragraph...") self.assertEqual(self._ilist(doc), ['html', 'body', 'i']) self.assertEqual(self._ilist(doc.find('body')), ['body', 'i']) self.assertEqual(next(doc.iter()).tag, 'html') self.assertEqual(''.join(doc.itertext()), 'this is a paragraph...') self.assertEqual(''.join(doc.find('body').itertext()), 'this is a paragraph.') self.assertEqual(next(doc.itertext()), 'this is a ') # iterparse should return an iterator sourcefile = serialize(doc, to_string=False) self.assertEqual(next(ET.iterparse(sourcefile))[0], 'end') # With an explicit parser too (issue #9708) sourcefile = serialize(doc, to_string=False) parser = ET.XMLParser(target=ET.TreeBuilder()) self.assertEqual(next(ET.iterparse(sourcefile, parser=parser))[0], 'end') tree = ET.ElementTree(None) self.assertRaises(AttributeError, tree.iter) # Issue #16913 doc = ET.XML("a&b&c&") self.assertEqual(''.join(doc.itertext()), 'a&b&c&') def test_corners(self): # single root, no subelements a = ET.Element('a') self.assertEqual(self._ilist(a), ['a']) # one child b = ET.SubElement(a, 'b') self.assertEqual(self._ilist(a), ['a', 'b']) # one child and one grandchild c = ET.SubElement(b, 'c') self.assertEqual(self._ilist(a), ['a', 'b', 'c']) # two children, only first with grandchild d = ET.SubElement(a, 'd') self.assertEqual(self._ilist(a), ['a', 'b', 'c', 'd']) # replace first child by second a[0] = a[1] del a[1] self.assertEqual(self._ilist(a), ['a', 'd']) def test_iter_by_tag(self): doc = ET.XML(''' bedroom1 bedroom2 nothing here bedroom8 ''') self.assertEqual(self._ilist(doc, 'room'), ['room'] * 3) self.assertEqual(self._ilist(doc, 'house'), ['house'] * 2) # test that iter also accepts 'tag' as a keyword arg self.assertEqual( summarize_list(doc.iter(tag='room')), ['room'] * 3) # make sure both tag=None and tag='*' return all tags all_tags = ['document', 'house', 'room', 'room', 'shed', 'house', 'room'] self.assertEqual(summarize_list(doc.iter()), all_tags) self.assertEqual(self._ilist(doc), all_tags) self.assertEqual(self._ilist(doc, '*'), all_tags) # Element.getiterator() is deprecated. @checkwarnings(("This method will be removed in future versions. " "Use .+ instead.", PendingDeprecationWarning)) def test_getiterator(self): doc = ET.XML(''' bedroom1 bedroom2 nothing here bedroom8 ''') self.assertEqual(summarize_list(doc.getiterator('room')), ['room'] * 3) self.assertEqual(summarize_list(doc.getiterator('house')), ['house'] * 2) # test that getiterator also accepts 'tag' as a keyword arg self.assertEqual( summarize_list(doc.getiterator(tag='room')), ['room'] * 3) # make sure both tag=None and tag='*' return all tags all_tags = ['document', 'house', 'room', 'room', 'shed', 'house', 'room'] self.assertEqual(summarize_list(doc.getiterator()), all_tags) self.assertEqual(summarize_list(doc.getiterator(None)), all_tags) self.assertEqual(summarize_list(doc.getiterator('*')), all_tags) def test_copy(self): a = ET.Element('a') it = a.iter() with self.assertRaises(TypeError): copy.copy(it) def test_pickle(self): a = ET.Element('a') it = a.iter() for proto in range(pickle.HIGHEST_PROTOCOL + 1): with self.assertRaises((TypeError, pickle.PicklingError)): pickle.dumps(it, proto) class TreeBuilderTest(unittest.TestCase): sample1 = ('' 'text
subtext
tail') sample2 = '''sometext''' def _check_sample1_element(self, e): self.assertEqual(e.tag, 'html') self.assertEqual(e.text, 'text') self.assertEqual(e.tail, None) self.assertEqual(e.attrib, {}) children = list(e) self.assertEqual(len(children), 1) child = children[0] self.assertEqual(child.tag, 'div') self.assertEqual(child.text, 'subtext') self.assertEqual(child.tail, 'tail') self.assertEqual(child.attrib, {}) def test_dummy_builder(self): class BaseDummyBuilder: def close(self): return 42 class DummyBuilder(BaseDummyBuilder): data = start = end = lambda *a: None parser = ET.XMLParser(target=DummyBuilder()) parser.feed(self.sample1) self.assertEqual(parser.close(), 42) parser = ET.XMLParser(target=BaseDummyBuilder()) parser.feed(self.sample1) self.assertEqual(parser.close(), 42) parser = ET.XMLParser(target=object()) parser.feed(self.sample1) self.assertIsNone(parser.close()) def test_treebuilder_elementfactory_none(self): parser = ET.XMLParser(target=ET.TreeBuilder(element_factory=None)) parser.feed(self.sample1) e = parser.close() self._check_sample1_element(e) def test_subclass(self): class MyTreeBuilder(ET.TreeBuilder): def foobar(self, x): return x * 2 tb = MyTreeBuilder() self.assertEqual(tb.foobar(10), 20) parser = ET.XMLParser(target=tb) parser.feed(self.sample1) e = parser.close() self._check_sample1_element(e) def test_element_factory(self): lst = [] def myfactory(tag, attrib): nonlocal lst lst.append(tag) return ET.Element(tag, attrib) tb = ET.TreeBuilder(element_factory=myfactory) parser = ET.XMLParser(target=tb) parser.feed(self.sample2) parser.close() self.assertEqual(lst, ['toplevel']) def _check_element_factory_class(self, cls): tb = ET.TreeBuilder(element_factory=cls) parser = ET.XMLParser(target=tb) parser.feed(self.sample1) e = parser.close() self.assertIsInstance(e, cls) self._check_sample1_element(e) def test_element_factory_subclass(self): class MyElement(ET.Element): pass self._check_element_factory_class(MyElement) def test_element_factory_pure_python_subclass(self): # Mimick SimpleTAL's behaviour (issue #16089): both versions of # TreeBuilder should be able to cope with a subclass of the # pure Python Element class. base = ET._Element_Py # Not from a C extension self.assertEqual(base.__module__, 'xml.etree.ElementTree') # Force some multiple inheritance with a C class to make things # more interesting. class MyElement(base, ValueError): pass self._check_element_factory_class(MyElement) def test_doctype(self): class DoctypeParser: _doctype = None def doctype(self, name, pubid, system): self._doctype = (name, pubid, system) def close(self): return self._doctype parser = ET.XMLParser(target=DoctypeParser()) parser.feed(self.sample1) self.assertEqual(parser.close(), ('html', '-//W3C//DTD XHTML 1.0 Transitional//EN', 'http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd')) def test_builder_lookup_errors(self): class RaisingBuilder: def __init__(self, raise_in=None, what=ValueError): self.raise_in = raise_in self.what = what def __getattr__(self, name): if name == self.raise_in: raise self.what(self.raise_in) def handle(*args): pass return handle ET.XMLParser(target=RaisingBuilder()) # cET also checks for 'close' and 'doctype', PyET does it only at need for event in ('start', 'data', 'end', 'comment', 'pi'): with self.assertRaisesRegex(ValueError, event): ET.XMLParser(target=RaisingBuilder(event)) ET.XMLParser(target=RaisingBuilder(what=AttributeError)) for event in ('start', 'data', 'end', 'comment', 'pi'): parser = ET.XMLParser(target=RaisingBuilder(event, what=AttributeError)) parser.feed(self.sample1) self.assertIsNone(parser.close()) class XMLParserTest(unittest.TestCase): sample1 = b'22' sample2 = (b'' b'text') sample3 = ('\n' '$\xa3\u20ac\U0001017b') def _check_sample_element(self, e): self.assertEqual(e.tag, 'file') self.assertEqual(e[0].tag, 'line') self.assertEqual(e[0].text, '22') def test_constructor_args(self): # Positional args. The first (html) is not supported, but should be # nevertheless correctly accepted. with self.assertWarnsRegex(DeprecationWarning, r'\bhtml\b'): parser = ET.XMLParser(None, ET.TreeBuilder(), 'utf-8') parser.feed(self.sample1) self._check_sample_element(parser.close()) # Now as keyword args. parser2 = ET.XMLParser(encoding='utf-8', target=ET.TreeBuilder()) parser2.feed(self.sample1) self._check_sample_element(parser2.close()) def test_subclass(self): class MyParser(ET.XMLParser): pass parser = MyParser() parser.feed(self.sample1) self._check_sample_element(parser.close()) def test_doctype_warning(self): parser = ET.XMLParser() with self.assertWarns(DeprecationWarning): parser.doctype('html', '-//W3C//DTD XHTML 1.0 Transitional//EN', 'http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd') parser.feed('') parser.close() with warnings.catch_warnings(): warnings.simplefilter('error', DeprecationWarning) parser = ET.XMLParser() parser.feed(self.sample2) parser.close() def test_subclass_doctype(self): _doctype = None class MyParserWithDoctype(ET.XMLParser): def doctype(self, name, pubid, system): nonlocal _doctype _doctype = (name, pubid, system) parser = MyParserWithDoctype() with self.assertWarns(DeprecationWarning): parser.feed(self.sample2) parser.close() self.assertEqual(_doctype, ('html', '-//W3C//DTD XHTML 1.0 Transitional//EN', 'http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd')) _doctype = _doctype2 = None with warnings.catch_warnings(): warnings.simplefilter('error', DeprecationWarning) class DoctypeParser: def doctype(self, name, pubid, system): nonlocal _doctype2 _doctype2 = (name, pubid, system) parser = MyParserWithDoctype(target=DoctypeParser()) parser.feed(self.sample2) parser.close() self.assertIsNone(_doctype) self.assertEqual(_doctype2, ('html', '-//W3C//DTD XHTML 1.0 Transitional//EN', 'http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd')) def test_inherited_doctype(self): '''Ensure that ordinary usage is not deprecated (Issue 19176)''' with warnings.catch_warnings(): warnings.simplefilter('error', DeprecationWarning) class MyParserWithoutDoctype(ET.XMLParser): pass parser = MyParserWithoutDoctype() parser.feed(self.sample2) parser.close() def test_parse_string(self): parser = ET.XMLParser(target=ET.TreeBuilder()) parser.feed(self.sample3) e = parser.close() self.assertEqual(e.tag, 'money') self.assertEqual(e.attrib['value'], '$\xa3\u20ac\U0001017b') self.assertEqual(e.text, '$\xa3\u20ac\U0001017b') class NamespaceParseTest(unittest.TestCase): def test_find_with_namespace(self): nsmap = {'h': 'hello', 'f': 'foo'} doc = ET.fromstring(SAMPLE_XML_NS_ELEMS) self.assertEqual(len(doc.findall('{hello}table', nsmap)), 1) self.assertEqual(len(doc.findall('.//{hello}td', nsmap)), 2) self.assertEqual(len(doc.findall('.//{foo}name', nsmap)), 1) class ElementSlicingTest(unittest.TestCase): def _elem_tags(self, elemlist): return [e.tag for e in elemlist] def _subelem_tags(self, elem): return self._elem_tags(list(elem)) def _make_elem_with_children(self, numchildren): """Create an Element with a tag 'a', with the given amount of children named 'a0', 'a1' ... and so on. """ e = ET.Element('a') for i in range(numchildren): ET.SubElement(e, 'a%s' % i) return e def test_getslice_single_index(self): e = self._make_elem_with_children(10) self.assertEqual(e[1].tag, 'a1') self.assertEqual(e[-2].tag, 'a8') self.assertRaises(IndexError, lambda: e[12]) self.assertRaises(IndexError, lambda: e[-12]) def test_getslice_range(self): e = self._make_elem_with_children(6) self.assertEqual(self._elem_tags(e[3:]), ['a3', 'a4', 'a5']) self.assertEqual(self._elem_tags(e[3:6]), ['a3', 'a4', 'a5']) self.assertEqual(self._elem_tags(e[3:16]), ['a3', 'a4', 'a5']) self.assertEqual(self._elem_tags(e[3:5]), ['a3', 'a4']) self.assertEqual(self._elem_tags(e[3:-1]), ['a3', 'a4']) self.assertEqual(self._elem_tags(e[:2]), ['a0', 'a1']) def test_getslice_steps(self): e = self._make_elem_with_children(10) self.assertEqual(self._elem_tags(e[8:10:1]), ['a8', 'a9']) self.assertEqual(self._elem_tags(e[::3]), ['a0', 'a3', 'a6', 'a9']) self.assertEqual(self._elem_tags(e[::8]), ['a0', 'a8']) self.assertEqual(self._elem_tags(e[1::8]), ['a1', 'a9']) self.assertEqual(self._elem_tags(e[3::sys.maxsize]), ['a3']) self.assertEqual(self._elem_tags(e[3::sys.maxsize<<64]), ['a3']) def test_getslice_negative_steps(self): e = self._make_elem_with_children(4) self.assertEqual(self._elem_tags(e[::-1]), ['a3', 'a2', 'a1', 'a0']) self.assertEqual(self._elem_tags(e[::-2]), ['a3', 'a1']) self.assertEqual(self._elem_tags(e[3::-sys.maxsize]), ['a3']) self.assertEqual(self._elem_tags(e[3::-sys.maxsize-1]), ['a3']) self.assertEqual(self._elem_tags(e[3::-sys.maxsize<<64]), ['a3']) def test_delslice(self): e = self._make_elem_with_children(4) del e[0:2] self.assertEqual(self._subelem_tags(e), ['a2', 'a3']) e = self._make_elem_with_children(4) del e[0:] self.assertEqual(self._subelem_tags(e), []) e = self._make_elem_with_children(4) del e[::-1] self.assertEqual(self._subelem_tags(e), []) e = self._make_elem_with_children(4) del e[::-2] self.assertEqual(self._subelem_tags(e), ['a0', 'a2']) e = self._make_elem_with_children(4) del e[1::2] self.assertEqual(self._subelem_tags(e), ['a0', 'a2']) e = self._make_elem_with_children(2) del e[::2] self.assertEqual(self._subelem_tags(e), ['a1']) def test_setslice_single_index(self): e = self._make_elem_with_children(4) e[1] = ET.Element('b') self.assertEqual(self._subelem_tags(e), ['a0', 'b', 'a2', 'a3']) e[-2] = ET.Element('c') self.assertEqual(self._subelem_tags(e), ['a0', 'b', 'c', 'a3']) with self.assertRaises(IndexError): e[5] = ET.Element('d') with self.assertRaises(IndexError): e[-5] = ET.Element('d') self.assertEqual(self._subelem_tags(e), ['a0', 'b', 'c', 'a3']) def test_setslice_range(self): e = self._make_elem_with_children(4) e[1:3] = [ET.Element('b%s' % i) for i in range(2)] self.assertEqual(self._subelem_tags(e), ['a0', 'b0', 'b1', 'a3']) e = self._make_elem_with_children(4) e[1:3] = [ET.Element('b')] self.assertEqual(self._subelem_tags(e), ['a0', 'b', 'a3']) e = self._make_elem_with_children(4) e[1:3] = [ET.Element('b%s' % i) for i in range(3)] self.assertEqual(self._subelem_tags(e), ['a0', 'b0', 'b1', 'b2', 'a3']) def test_setslice_steps(self): e = self._make_elem_with_children(6) e[1:5:2] = [ET.Element('b%s' % i) for i in range(2)] self.assertEqual(self._subelem_tags(e), ['a0', 'b0', 'a2', 'b1', 'a4', 'a5']) e = self._make_elem_with_children(6) with self.assertRaises(ValueError): e[1:5:2] = [ET.Element('b')] with self.assertRaises(ValueError): e[1:5:2] = [ET.Element('b%s' % i) for i in range(3)] with self.assertRaises(ValueError): e[1:5:2] = [] self.assertEqual(self._subelem_tags(e), ['a0', 'a1', 'a2', 'a3', 'a4', 'a5']) e = self._make_elem_with_children(4) e[1::sys.maxsize] = [ET.Element('b')] self.assertEqual(self._subelem_tags(e), ['a0', 'b', 'a2', 'a3']) e[1::sys.maxsize<<64] = [ET.Element('c')] self.assertEqual(self._subelem_tags(e), ['a0', 'c', 'a2', 'a3']) def test_setslice_negative_steps(self): e = self._make_elem_with_children(4) e[2:0:-1] = [ET.Element('b%s' % i) for i in range(2)] self.assertEqual(self._subelem_tags(e), ['a0', 'b1', 'b0', 'a3']) e = self._make_elem_with_children(4) with self.assertRaises(ValueError): e[2:0:-1] = [ET.Element('b')] with self.assertRaises(ValueError): e[2:0:-1] = [ET.Element('b%s' % i) for i in range(3)] with self.assertRaises(ValueError): e[2:0:-1] = [] self.assertEqual(self._subelem_tags(e), ['a0', 'a1', 'a2', 'a3']) e = self._make_elem_with_children(4) e[1::-sys.maxsize] = [ET.Element('b')] self.assertEqual(self._subelem_tags(e), ['a0', 'b', 'a2', 'a3']) e[1::-sys.maxsize-1] = [ET.Element('c')] self.assertEqual(self._subelem_tags(e), ['a0', 'c', 'a2', 'a3']) e[1::-sys.maxsize<<64] = [ET.Element('d')] self.assertEqual(self._subelem_tags(e), ['a0', 'd', 'a2', 'a3']) class IOTest(unittest.TestCase): def test_encoding(self): # Test encoding issues. elem = ET.Element("tag") elem.text = "abc" self.assertEqual(serialize(elem), 'abc') for enc in ("utf-8", "us-ascii"): with self.subTest(enc): self.assertEqual(serialize(elem, encoding=enc), b'abc') self.assertEqual(serialize(elem, encoding=enc.upper()), b'abc') for enc in ("iso-8859-1", "utf-16", "utf-32"): with self.subTest(enc): self.assertEqual(serialize(elem, encoding=enc), ("\n" "abc" % enc).encode(enc)) upper = enc.upper() self.assertEqual(serialize(elem, encoding=upper), ("\n" "abc" % upper).encode(enc)) elem = ET.Element("tag") elem.text = "<&\"\'>" self.assertEqual(serialize(elem), '<&"\'>') self.assertEqual(serialize(elem, encoding="utf-8"), b'<&"\'>') self.assertEqual(serialize(elem, encoding="us-ascii"), b'<&"\'>') for enc in ("iso-8859-1", "utf-16", "utf-32"): self.assertEqual(serialize(elem, encoding=enc), ("\n" "<&\"'>" % enc).encode(enc)) elem = ET.Element("tag") elem.attrib["key"] = "<&\"\'>" self.assertEqual(serialize(elem), '') self.assertEqual(serialize(elem, encoding="utf-8"), b'') self.assertEqual(serialize(elem, encoding="us-ascii"), b'') for enc in ("iso-8859-1", "utf-16", "utf-32"): self.assertEqual(serialize(elem, encoding=enc), ("\n" "" % enc).encode(enc)) elem = ET.Element("tag") elem.text = '\xe5\xf6\xf6<>' self.assertEqual(serialize(elem), '\xe5\xf6\xf6<>') self.assertEqual(serialize(elem, encoding="utf-8"), b'\xc3\xa5\xc3\xb6\xc3\xb6<>') self.assertEqual(serialize(elem, encoding="us-ascii"), b'åöö<>') for enc in ("iso-8859-1", "utf-16", "utf-32"): self.assertEqual(serialize(elem, encoding=enc), ("\n" "åöö<>" % enc).encode(enc)) elem = ET.Element("tag") elem.attrib["key"] = '\xe5\xf6\xf6<>' self.assertEqual(serialize(elem), '') self.assertEqual(serialize(elem, encoding="utf-8"), b'') self.assertEqual(serialize(elem, encoding="us-ascii"), b'') for enc in ("iso-8859-1", "utf-16", "utf-16le", "utf-16be", "utf-32"): self.assertEqual(serialize(elem, encoding=enc), ("\n" "" % enc).encode(enc)) def test_write_to_filename(self): self.addCleanup(support.unlink, TESTFN) tree = ET.ElementTree(ET.XML('''''')) tree.write(TESTFN) with open(TESTFN, 'rb') as f: self.assertEqual(f.read(), b'''''') def test_write_to_text_file(self): self.addCleanup(support.unlink, TESTFN) tree = ET.ElementTree(ET.XML('''''')) with open(TESTFN, 'w', encoding='utf-8') as f: tree.write(f, encoding='unicode') self.assertFalse(f.closed) with open(TESTFN, 'rb') as f: self.assertEqual(f.read(), b'''''') def test_write_to_binary_file(self): self.addCleanup(support.unlink, TESTFN) tree = ET.ElementTree(ET.XML('''''')) with open(TESTFN, 'wb') as f: tree.write(f) self.assertFalse(f.closed) with open(TESTFN, 'rb') as f: self.assertEqual(f.read(), b'''''') def test_write_to_binary_file_with_bom(self): self.addCleanup(support.unlink, TESTFN) tree = ET.ElementTree(ET.XML('''''')) # test BOM writing to buffered file with open(TESTFN, 'wb') as f: tree.write(f, encoding='utf-16') self.assertFalse(f.closed) with open(TESTFN, 'rb') as f: self.assertEqual(f.read(), '''\n''' ''''''.encode("utf-16")) # test BOM writing to non-buffered file with open(TESTFN, 'wb', buffering=0) as f: tree.write(f, encoding='utf-16') self.assertFalse(f.closed) with open(TESTFN, 'rb') as f: self.assertEqual(f.read(), '''\n''' ''''''.encode("utf-16")) def test_read_from_stringio(self): tree = ET.ElementTree() stream = io.StringIO('''''') tree.parse(stream) self.assertEqual(tree.getroot().tag, 'site') def test_write_to_stringio(self): tree = ET.ElementTree(ET.XML('''''')) stream = io.StringIO() tree.write(stream, encoding='unicode') self.assertEqual(stream.getvalue(), '''''') def test_read_from_bytesio(self): tree = ET.ElementTree() raw = io.BytesIO(b'''''') tree.parse(raw) self.assertEqual(tree.getroot().tag, 'site') def test_write_to_bytesio(self): tree = ET.ElementTree(ET.XML('''''')) raw = io.BytesIO() tree.write(raw) self.assertEqual(raw.getvalue(), b'''''') class dummy: pass def test_read_from_user_text_reader(self): stream = io.StringIO('''''') reader = self.dummy() reader.read = stream.read tree = ET.ElementTree() tree.parse(reader) self.assertEqual(tree.getroot().tag, 'site') def test_write_to_user_text_writer(self): tree = ET.ElementTree(ET.XML('''''')) stream = io.StringIO() writer = self.dummy() writer.write = stream.write tree.write(writer, encoding='unicode') self.assertEqual(stream.getvalue(), '''''') def test_read_from_user_binary_reader(self): raw = io.BytesIO(b'''''') reader = self.dummy() reader.read = raw.read tree = ET.ElementTree() tree.parse(reader) self.assertEqual(tree.getroot().tag, 'site') tree = ET.ElementTree() def test_write_to_user_binary_writer(self): tree = ET.ElementTree(ET.XML('''''')) raw = io.BytesIO() writer = self.dummy() writer.write = raw.write tree.write(writer) self.assertEqual(raw.getvalue(), b'''''') def test_write_to_user_binary_writer_with_bom(self): tree = ET.ElementTree(ET.XML('''''')) raw = io.BytesIO() writer = self.dummy() writer.write = raw.write writer.seekable = lambda: True writer.tell = raw.tell tree.write(writer, encoding="utf-16") self.assertEqual(raw.getvalue(), '''\n''' ''''''.encode("utf-16")) def test_tostringlist_invariant(self): root = ET.fromstring('foo') self.assertEqual( ET.tostring(root, 'unicode'), ''.join(ET.tostringlist(root, 'unicode'))) self.assertEqual( ET.tostring(root, 'utf-16'), b''.join(ET.tostringlist(root, 'utf-16'))) def test_short_empty_elements(self): root = ET.fromstring('abc') self.assertEqual( ET.tostring(root, 'unicode'), 'abc') self.assertEqual( ET.tostring(root, 'unicode', short_empty_elements=True), 'abc') self.assertEqual( ET.tostring(root, 'unicode', short_empty_elements=False), 'abc') class ParseErrorTest(unittest.TestCase): def test_subclass(self): self.assertIsInstance(ET.ParseError(), SyntaxError) def _get_error(self, s): try: ET.fromstring(s) except ET.ParseError as e: return e def test_error_position(self): self.assertEqual(self._get_error('foo').position, (1, 0)) self.assertEqual(self._get_error('&foo;').position, (1, 5)) self.assertEqual(self._get_error('foobar<').position, (1, 6)) def test_error_code(self): import xml.parsers.expat.errors as ERRORS self.assertEqual(self._get_error('foo').code, ERRORS.codes[ERRORS.XML_ERROR_SYNTAX]) class KeywordArgsTest(unittest.TestCase): # Test various issues with keyword arguments passed to ET.Element # constructor and methods def test_issue14818(self): x = ET.XML("foo") self.assertEqual(x.find('a', None), x.find(path='a', namespaces=None)) self.assertEqual(x.findtext('a', None, None), x.findtext(path='a', default=None, namespaces=None)) self.assertEqual(x.findall('a', None), x.findall(path='a', namespaces=None)) self.assertEqual(list(x.iterfind('a', None)), list(x.iterfind(path='a', namespaces=None))) self.assertEqual(ET.Element('a').attrib, {}) elements = [ ET.Element('a', dict(href="#", id="foo")), ET.Element('a', attrib=dict(href="#", id="foo")), ET.Element('a', dict(href="#"), id="foo"), ET.Element('a', href="#", id="foo"), ET.Element('a', dict(href="#", id="foo"), href="#", id="foo"), ] for e in elements: self.assertEqual(e.tag, 'a') self.assertEqual(e.attrib, dict(href="#", id="foo")) e2 = ET.SubElement(elements[0], 'foobar', attrib={'key1': 'value1'}) self.assertEqual(e2.attrib['key1'], 'value1') with self.assertRaisesRegex(TypeError, 'must be dict, not str'): ET.Element('a', "I'm not a dict") with self.assertRaisesRegex(TypeError, 'must be dict, not str'): ET.Element('a', attrib="I'm not a dict") # -------------------------------------------------------------------- class NoAcceleratorTest(unittest.TestCase): def setUp(self): if not pyET: raise unittest.SkipTest('only for the Python version') # Test that the C accelerator was not imported for pyET def test_correct_import_pyET(self): # The type of methods defined in Python code is types.FunctionType, # while the type of methods defined inside _elementtree is # self.assertIsInstance(pyET.Element.__init__, types.FunctionType) self.assertIsInstance(pyET.XMLParser.__init__, types.FunctionType) # -------------------------------------------------------------------- def test_main(module=None): # When invoked without a module, runs the Python ET tests by loading pyET. # Otherwise, uses the given module as the ET. global pyET pyET = import_fresh_module('xml.etree.ElementTree', blocked=['_elementtree']) if module is None: module = pyET global ET ET = module test_classes = [ ModuleTest, ElementSlicingTest, BasicElementTest, BadElementTest, BadElementPathTest, ElementTreeTest, IOTest, ParseErrorTest, XIncludeTest, ElementTreeTypeTest, ElementFindTest, ElementIterTest, TreeBuilderTest, XMLParserTest, XMLPullParserTest, BugsTest, ] # These tests will only run for the pure-Python version that doesn't import # _elementtree. We can't use skipUnless here, because pyET is filled in only # after the module is loaded. if pyET is not ET: test_classes.extend([ NoAcceleratorTest, ]) # Provide default namespace mapping and path cache. from xml.etree import ElementPath nsmap = ET.register_namespace._namespace_map # Copy the default namespace mapping nsmap_copy = nsmap.copy() # Copy the path cache (should be empty) path_cache = ElementPath._cache ElementPath._cache = path_cache.copy() try: support.run_unittest(*test_classes) finally: from xml.etree import ElementPath # Restore mapping and path cache nsmap.clear() nsmap.update(nsmap_copy) ElementPath._cache = path_cache # don't interfere with subsequent tests ET = pyET = None if __name__ == '__main__': test_main()