\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"] = """\
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),
'') # 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'舰')
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.')
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(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/')
# --------------------------------------------------------------------
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'))
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//*'))
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
self.assertEqual(summarize_list(ET.ElementTree(e).findall('//tag')),
['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 explitit 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(self._ilist(doc), all_tags)
self.assertEqual(self._ilist(doc, '*'), all_tags)
class TreeBuilderTest(unittest.TestCase):
sample1 = (''
'textsubtext
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'))
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.
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',
html=[{}],
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])
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'])
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'])
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'])
class IOTest(unittest.TestCase):
def tearDown(self):
support.unlink(TESTFN)
def test_encoding(self):
# Test encoding issues.
elem = ET.Element("tag")
elem.text = "abc"
self.assertEqual(serialize(elem), '