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gerrit-public.fairphone.software / platform / external / python / cpython3 / 6b2918ae7516d8efe306f59a636601a3d3bb6f1a / . / Lib / test / test_xml_etree.py
blob: f3683f2d7e0825a0c79ff9c6e0026c7859325fca [file] [log] [blame]
# 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 html
import io
import operator
import pickle
import sys
import unittest
import weakref
from itertools import product
from test import support
from test.support import TESTFN, findfile, import_fresh_module, gc_collect
# 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")
SAMPLE_XML = """\
<body>
<tag class='a'>text</tag>
<tag class='b' />
<section>
<tag class='b' id='inner'>subtext</tag>
</section>
</body>
"""
SAMPLE_SECTION = """\
<section>
<tag class='b' id='inner'>subtext</tag>
<nexttag />
<nextsection>
<tag />
</nextsection>
</section>
"""
SAMPLE_XML_NS = """
<body xmlns="http://effbot.org/ns">
<tag>text</tag>
<tag />
<section>
<tag>subtext</tag>
</section>
</body>
"""
SAMPLE_XML_NS_ELEMS = """
<root>
<h:table xmlns:h="hello">
<h:tr>
<h:td>Apples</h:td>
<h:td>Bananas</h:td>
</h:tr>
</h:table>
<f:table xmlns:f="foo">
<f:name>African Coffee Table</f:name>
<f:width>80</f:width>
<f:length>120</f:length>
</f:table>
</root>
"""
ENTITY_XML = """\
<!DOCTYPE points [
<!ENTITY % user-entities SYSTEM 'user-entities.xml'>
%user-entities;
]>
<document>&entity;</document>
"""
class ModuleTest(unittest.TestCase):
# TODO: this should be removed once we get rid of the global module vars
def test_sanity(self):
# Import sanity.
from xml.etree import ElementTree
from xml.etree import ElementInclude
from xml.etree import ElementPath
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):
save_m = sys.modules[name]
try:
sys.modules[name] = dumper
temp = pickle.dumps(obj)
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")
self.assertTrue(hasattr(element, "tag"), msg="no tag member")
self.assertTrue(hasattr(element, "attrib"), msg="no attrib member")
self.assertTrue(hasattr(element, "text"), msg="no text member")
self.assertTrue(hasattr(element, "tail"), msg="no tail member")
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 't\xe4g' at 0x.*>$")
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)
self.assertEqual(ET.XMLParser, ET.XMLTreeBuilder)
def test_simpleops(self):
# Basic method sanity checks.
elem = ET.XML("<body><tag/></body>")
self.serialize_check(elem, '<body><tag /></body>')
e = ET.Element("tag2")
elem.append(e)
self.serialize_check(elem, '<body><tag /><tag2 /></body>')
elem.remove(e)
self.serialize_check(elem, '<body><tag /></body>')
elem.insert(0, e)
self.serialize_check(elem, '<body><tag2 /><tag /></body>')
elem.remove(e)
elem.extend([e])
self.serialize_check(elem, '<body><tag /><tag2 /></body>')
elem.remove(e)
element = ET.Element("tag", key="value")
self.serialize_check(element, '<tag key="value" />') # 1
subelement = ET.Element("subtag")
element.append(subelement)
self.serialize_check(element, '<tag key="value"><subtag /></tag>') # 2
element.insert(0, subelement)
self.serialize_check(element,
'<tag key="value"><subtag /><subtag /></tag>') # 3
element.remove(subelement)
self.serialize_check(element, '<tag key="value"><subtag /></tag>') # 4
element.remove(subelement)
self.serialize_check(element, '<tag key="value" />') # 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, '<tag key="value" />') # 6
element[0:0] = [subelement, subelement, subelement]
self.serialize_check(element[1], '<subtag />')
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,
'<tag key="value"><subtag /><subtag /></tag>')
def test_cdata(self):
# Test CDATA handling (etc).
self.serialize_check(ET.XML("<tag>hello</tag>"),
'<tag>hello</tag>')
self.serialize_check(ET.XML("<tag>&#104;&#101;&#108;&#108;&#111;</tag>"),
'<tag>hello</tag>')
self.serialize_check(ET.XML("<tag><![CDATA[hello]]></tag>"),
'<tag>hello</tag>')
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("<tag>hello<foo/></tag>")
e2 = copy.copy(e1)
e3 = copy.deepcopy(e1)
e1.find("foo").tag = "bar"
self.serialize_check(e1, '<tag>hello<bar /></tag>')
self.serialize_check(e2, '<tag>hello<bar /></tag>')
self.serialize_check(e3, '<tag>hello<foo /></tag>')
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'<test testa="testval" testb="test2">aa</test>')
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'<test testa="testval" testb="test1" testc="test2">aa</test>')
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, '<tag><subtag key="value" /></tag>')
elem.clear()
self.serialize_check(elem, '<tag />')
elem.append(subelem)
self.serialize_check(elem, '<tag><subtag key="value" /></tag>')
elem.extend([subelem, subelem])
self.serialize_check(elem,
'<tag><subtag key="value" /><subtag key="value" /><subtag key="value" /></tag>')
elem[:] = [subelem]
self.serialize_check(elem, '<tag><subtag key="value" /></tag>')
elem[:] = tuple([subelem])
self.serialize_check(elem, '<tag><subtag key="value" /></tag>')
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(),
'<root>\n'
' <element key="value">text</element>\n'
' <element>text</element>tail\n'
' <empty-element />\n'
'</root>')
tree = ET.parse(SIMPLE_NS_XMLFILE)
stream = io.StringIO()
tree.write(stream, encoding='unicode')
self.assertEqual(stream.getvalue(),
'<ns0:root xmlns:ns0="namespace">\n'
' <ns0:element key="value">text</ns0:element>\n'
' <ns0:element>text</ns0:element>tail\n'
' <ns0:empty-element />\n'
'</ns0:root>')
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(),
'<root>\n'
' <element key="value">text</element>\n'
' <element>text</element>tail\n'
' <empty-element />\n'
'</root>')
parser = ET.XMLTreeBuilder() # 1.2 compatibility
parser.feed(data)
self.serialize_check(parser.close(),
'<root>\n'
' <element key="value">text</element>\n'
' <element>text</element>tail\n'
' <empty-element />\n'
'</root>')
target = ET.TreeBuilder()
parser = ET.XMLParser(target=target)
parser.feed(data)
self.serialize_check(parser.close(),
'<root>\n'
' <element key="value">text</element>\n'
' <element>text</element>tail\n'
' <empty-element />\n'
'</root>')
def test_parseliteral(self):
element = ET.XML("<html><body>text</body></html>")
self.assertEqual(ET.tostring(element, encoding='unicode'),
'<html><body>text</body></html>')
element = ET.fromstring("<html><body>text</body></html>")
self.assertEqual(ET.tostring(element, encoding='unicode'),
'<html><body>text</body></html>')
sequence = ["<html><body>", "text</bo", "dy></html>"]
element = ET.fromstringlist(sequence)
self.assertEqual(ET.tostring(element),
b'<html><body>text</body></html>')
self.assertEqual(b"".join(ET.tostringlist(element)),
b'<html><body>text</body></html>')
self.assertEqual(ET.tostring(element, "ascii"),
b"<?xml version='1.0' encoding='ascii'?>\n"
b"<html><body>text</body></html>")
_, ids = ET.XMLID("<html><body>text</body></html>")
self.assertEqual(len(ids), 0)
_, ids = ET.XMLID("<html><body id='body'>text</body></html>")
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", "end", "bogus")
with self.assertRaises(ValueError) as cm:
with open(SIMPLE_XMLFILE, "rb") as f:
iterparse(f, events)
self.assertEqual(str(cm.exception), "unknown event 'bogus'")
source = io.BytesIO(
b"<?xml version='1.0' encoding='iso-8859-1'?>\n"
b"<body xmlns='http://&#233;ffbot.org/ns'\n"
b" xmlns:cl\xe9='http://effbot.org/ns'>text</body>\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("<document />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')
def test_writefile(self):
elem = ET.Element("tag")
elem.text = "text"
self.serialize_check(elem, '<tag>text</tag>')
ET.SubElement(elem, "subtag").text = "subtext"
self.serialize_check(elem, '<tag>text<subtag>subtext</subtag></tag>')
# Test tag suppression
elem.tag = None
self.serialize_check(elem, 'text<subtag>subtext</subtag>')
elem.insert(0, ET.Comment("comment"))
self.serialize_check(elem,
'text<!--comment--><subtag>subtext</subtag>') # assumes 1.3
elem[0] = ET.PI("key", "value")
self.serialize_check(elem, 'text<?key value?><subtag>subtext</subtag>')
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'),
])
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("<html><body>text</body></html>")
self.assertEqual(ET.tostring(elem), b'<html><body>text</body></html>')
elem = ET.fromstring("<html><body>text</body></html>")
self.assertEqual(ET.tostring(elem), b'<html><body>text</body></html>')
def test_encoding(encoding):
def check(encoding):
ET.XML("<?xml version='1.0' encoding='%s'?><xml />" % encoding)
check("ascii")
check("us-ascii")
check("iso-8859-1")
check("iso-8859-15")
check("cp437")
check("mac-roman")
def test_methods(self):
# Test serialization methods.
e = ET.XML("<html><link/><script>1 &lt; 2</script></html>")
e.tail = "\n"
self.assertEqual(serialize(e),
'<html><link /><script>1 &lt; 2</script></html>\n')
self.assertEqual(serialize(e, method=None),
'<html><link /><script>1 &lt; 2</script></html>\n')
self.assertEqual(serialize(e, method="xml"),
'<html><link /><script>1 &lt; 2</script></html>\n')
self.assertEqual(serialize(e, method="html"),
'<html><link><script>1 < 2</script></html>\n')
self.assertEqual(serialize(e, method="text"), '1 < 2\n')
def test_entity(self):
# Test entity handling.
# 1) good entities
e = ET.XML("<document title='&#x8230;'>test</document>")
self.assertEqual(serialize(e, encoding="us-ascii"),
b'<document title="&#33328;">test</document>')
self.serialize_check(e, '<document title="\u8230">test</document>')
# 2) bad entities
with self.assertRaises(ET.ParseError) as cm:
ET.XML("<document>&entity;</document>")
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, '<document>text</document>')
def test_namespace(self):
# Test namespace issues.
# 1) xml namespace
elem = ET.XML("<tag xml:lang='en' />")
self.serialize_check(elem, '<tag xml:lang="en" />') # 1.1
# 2) other "well-known" namespaces
elem = ET.XML("<rdf:RDF xmlns:rdf='http://www.w3.org/1999/02/22-rdf-syntax-ns#' />")
self.serialize_check(elem,
'<rdf:RDF xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" />') # 2.1
elem = ET.XML("<html:html xmlns:html='http://www.w3.org/1999/xhtml' />")
self.serialize_check(elem,
'<html:html xmlns:html="http://www.w3.org/1999/xhtml" />') # 2.2
elem = ET.XML("<soap:Envelope xmlns:soap='http://schemas.xmlsoap.org/soap/envelope' />")
self.serialize_check(elem,
'<ns0:Envelope xmlns:ns0="http://schemas.xmlsoap.org/soap/envelope" />') # 2.3
# 3) unknown namespaces
elem = ET.XML(SAMPLE_XML_NS)
self.serialize_check(elem,
'<ns0:body xmlns:ns0="http://effbot.org/ns">\n'
' <ns0:tag>text</ns0:tag>\n'
' <ns0:tag />\n'
' <ns0:section>\n'
' <ns0:tag>subtext</ns0:tag>\n'
' </ns0:section>\n'
'</ns0:body>')
def test_qname(self):
# Test QName handling.
# 1) decorated tags
elem = ET.Element("{uri}tag")
self.serialize_check(elem, '<ns0:tag xmlns:ns0="uri" />') # 1.1
elem = ET.Element(ET.QName("{uri}tag"))
self.serialize_check(elem, '<ns0:tag xmlns:ns0="uri" />') # 1.2
elem = ET.Element(ET.QName("uri", "tag"))
self.serialize_check(elem, '<ns0:tag xmlns:ns0="uri" />') # 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,
'<ns0:tag xmlns:ns0="uri"><ns0:tag1 /><ns0:tag2 /></ns0:tag>') # 1.4
# 2) decorated attributes
elem.clear()
elem.attrib["{uri}key"] = "value"
self.serialize_check(elem,
'<ns0:tag xmlns:ns0="uri" ns0:key="value" />') # 2.1
elem.clear()
elem.attrib[ET.QName("{uri}key")] = "value"
self.serialize_check(elem,
'<ns0:tag xmlns:ns0="uri" ns0:key="value" />') # 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,
'<ns0:tag xmlns:ns0="uri" ns0:key="{uri}value" />') # 3.1
elem.clear()
elem.attrib["{uri}key"] = ET.QName("{uri}value")
self.serialize_check(elem,
'<ns0:tag xmlns:ns0="uri" ns0:key="ns0:value" />') # 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,
'<ns0:tag xmlns:ns0="uri" xmlns:ns1="uri1" xmlns:ns2="uri2">'
'<tag ns1:key="ns2:value" />'
'<tag ns1:key="ns2:value" />'
'</ns0:tag>') # 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('<!DOCTYPE html PUBLIC'
' "-//W3C//DTD XHTML 1.0 Transitional//EN"'
' "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">'
'<html>text</html>')
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'<?test instruction?>')
self.assertEqual(ET.tostring(ET.PI('test', 'instruction')),
b'<?test instruction?>')
# Issue #2746
self.assertEqual(ET.tostring(ET.PI('test', '<testing&>')),
b'<?test <testing&>?>')
self.assertEqual(ET.tostring(ET.PI('test', '<testing&>\xe3'), 'latin-1'),
b"<?xml version='1.0' encoding='latin-1'?>\n"
b"<?test <testing&>\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></%s>' % (elem,elem)),
method='html')
self.assertEqual(serialized, expected)
#
# xinclude tests (samples from appendix C of the xinclude specification)
XINCLUDE = {}
XINCLUDE["C1.xml"] = """\
<?xml version='1.0'?>
<document xmlns:xi="http://www.w3.org/2001/XInclude">
<p>120 Mz is adequate for an average home user.</p>
<xi:include href="disclaimer.xml"/>
</document>
"""
XINCLUDE["disclaimer.xml"] = """\
<?xml version='1.0'?>
<disclaimer>
<p>The opinions represented herein represent those of the individual
and should not be interpreted as official policy endorsed by this
organization.</p>
</disclaimer>
"""
XINCLUDE["C2.xml"] = """\
<?xml version='1.0'?>
<document xmlns:xi="http://www.w3.org/2001/XInclude">
<p>This document has been accessed
<xi:include href="count.txt" parse="text"/> times.</p>
</document>
"""
XINCLUDE["count.txt"] = "324387"
XINCLUDE["C2b.xml"] = """\
<?xml version='1.0'?>
<document xmlns:xi="http://www.w3.org/2001/XInclude">
<p>This document has been <em>accessed</em>
<xi:include href="count.txt" parse="text"/> times.</p>
</document>
"""
XINCLUDE["C3.xml"] = """\
<?xml version='1.0'?>
<document xmlns:xi="http://www.w3.org/2001/XInclude">
<p>The following is the source of the "data.xml" resource:</p>
<example><xi:include href="data.xml" parse="text"/></example>
</document>
"""
XINCLUDE["data.xml"] = """\
<?xml version='1.0'?>
<data>
<item><![CDATA[Brooks & Shields]]></item>
</data>
"""
XINCLUDE["C5.xml"] = """\
<?xml version='1.0'?>
<div xmlns:xi="http://www.w3.org/2001/XInclude">
<xi:include href="example.txt" parse="text">
<xi:fallback>
<xi:include href="fallback-example.txt" parse="text">
<xi:fallback><a href="mailto:bob@example.org">Report error</a></xi:fallback>
</xi:include>
</xi:fallback>
</xi:include>
</div>
"""
XINCLUDE["default.xml"] = """\
<?xml version='1.0'?>
<document xmlns:xi="http://www.w3.org/2001/XInclude">
<p>Example.</p>
<xi:include href="{}"/>
</document>
""".format(html.escape(SIMPLE_XMLFILE, True))
#
# badly formatted xi:include tags
XINCLUDE_BAD = {}
XINCLUDE_BAD["B1.xml"] = """\
<?xml version='1.0'?>
<document xmlns:xi="http://www.w3.org/2001/XInclude">
<p>120 Mz is adequate for an average home user.</p>
<xi:include href="disclaimer.xml" parse="BAD_TYPE"/>
</document>
"""
XINCLUDE_BAD["B2.xml"] = """\
<?xml version='1.0'?>
<div xmlns:xi="http://www.w3.org/2001/XInclude">
<xi:fallback></xi:fallback>
</div>
"""
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),
'<document>\n'
' <p>Example.</p>\n'
' <root>\n'
' <element key="value">text</element>\n'
' <element>text</element>tail\n'
' <empty-element />\n'
'</root>\n'
'</document>')
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),
'<document>\n'
' <p>120 Mz is adequate for an average home user.</p>\n'
' <disclaimer>\n'
' <p>The opinions represented herein represent those of the individual\n'
' and should not be interpreted as official policy endorsed by this\n'
' organization.</p>\n'
'</disclaimer>\n'
'</document>') # C1
# Textual inclusion example (XInclude C.2)
document = self.xinclude_loader("C2.xml")
ElementInclude.include(document, self.xinclude_loader)
self.assertEqual(serialize(document),
'<document>\n'
' <p>This document has been accessed\n'
' 324387 times.</p>\n'
'</document>') # 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),
'<document>\n'
' <p>This document has been <em>accessed</em>\n'
' 324387 times.</p>\n'
'</document>') # 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),
'<document>\n'
' <p>The following is the source of the "data.xml" resource:</p>\n'
" <example>&lt;?xml version='1.0'?&gt;\n"
'&lt;data&gt;\n'
' &lt;item&gt;&lt;![CDATA[Brooks &amp; Shields]]&gt;&lt;/item&gt;\n'
'&lt;/data&gt;\n'
'</example>\n'
'</document>') # 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),
'<div xmlns:ns0="http://www.w3.org/2001/XInclude">\n'
' <ns0:include href="example.txt" parse="text">\n'
' <ns0:fallback>\n'
' <ns0:include href="fallback-example.txt" parse="text">\n'
' <ns0:fallback><a href="mailto:bob@example.org">Report error</a></ns0:fallback>\n'
' </ns0:include>\n'
' </ns0:fallback>\n'
' </ns0:include>\n'
'</div>') # 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("<doc><table><tbody/></table></doc>")
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("<doc><table><tbody/></table></doc>")
with support.captured_stdout() as stdout:
ET.dump(tree)
self.assertEqual(stdout.getvalue(), '<doc><table><tbody /></table></doc>\n')
def test_bug_xmltoolkit39(self):
# non-ascii element and attribute names doesn't work
tree = ET.XML(b"<?xml version='1.0' encoding='iso-8859-1'?><t\xe4g />")
self.assertEqual(ET.tostring(tree, "utf-8"), b'<t\xc3\xa4g />')
tree = ET.XML(b"<?xml version='1.0' encoding='iso-8859-1'?>"
b"<tag \xe4ttr='v&#228;lue' />")
self.assertEqual(tree.attrib, {'\xe4ttr': 'v\xe4lue'})
self.assertEqual(ET.tostring(tree, "utf-8"),
b'<tag \xc3\xa4ttr="v\xc3\xa4lue" />')
tree = ET.XML(b"<?xml version='1.0' encoding='iso-8859-1'?>"
b'<t\xe4g>text</t\xe4g>')
self.assertEqual(ET.tostring(tree, "utf-8"),
b'<t\xc3\xa4g>text</t\xc3\xa4g>')
tree = ET.Element("t\u00e4g")
self.assertEqual(ET.tostring(tree, "utf-8"), b'<t\xc3\xa4g />')
tree = ET.Element("tag")
tree.set("\u00e4ttr", "v\u00e4lue")
self.assertEqual(ET.tostring(tree, "utf-8"),
b'<tag \xc3\xa4ttr="v\xc3\xa4lue" />')
def test_bug_xmltoolkit54(self):
# problems handling internally defined entities
e = ET.XML("<!DOCTYPE doc [<!ENTITY ldots '&#x8230;'>]>"
'<doc>&ldots;</doc>')
self.assertEqual(serialize(e, encoding="us-ascii"),
b'<doc>&#33328;</doc>')
self.assertEqual(serialize(e), '<doc>\u8230</doc>')
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"<!DOCTYPE doc SYSTEM 'doc.dtd'>"
b'<doc>&ldots;&ndots;&rdots;</doc>')
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.XMLTreeBuilder()
parser.entity.update(ENTITIES)
parser.feed("""<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE patent-application-publication SYSTEM "pap-v15-2001-01-31.dtd" []>
<patent-application-publication>
<subdoc-abstract>
<paragraph id="A-0001" lvl="0">A new cultivar of Begonia plant named &lsquo;BCT9801BEG&rsquo;.</paragraph>
</subdoc-abstract>
</patent-application-publication>""")
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'<SomeTag text="def _f():&#10; return 3&#10;" />')
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'<SomeTag text="def _f():&#10; return 3&#10;" />')
def test_bug_200708_close(self):
# Test default builder.
parser = ET.XMLParser() # default
parser.feed("<element>some text</element>")
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("<element>some text</element>")
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
'<elem xmlns="default"><elem /></elem>')
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
'<elem xmlns="default" xmlns:ns1="not-default">'
'<elem />'
'<ns1:elem />'
'</elem>')
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'<ns0:title xmlns:ns0="http://namespace.invalid/does/not/exist/" />')
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'<foo:title xmlns:foo="http://namespace.invalid/does/not/exist/" />')
# 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'<dc:title xmlns:dc="http://purl.org/dc/elements/1.1/" />')
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), '<tag />')
def test_issue6233(self):
e = ET.XML(b"<?xml version='1.0' encoding='utf-8'?>"
b'<body>t\xc3\xa3g</body>')
self.assertEqual(ET.tostring(e, 'ascii'),
b"<?xml version='1.0' encoding='ascii'?>\n"
b'<body>t&#227;g</body>')
e = ET.XML(b"<?xml version='1.0' encoding='iso-8859-1'?>"
b'<body>t\xe3g</body>')
self.assertEqual(ET.tostring(e, 'ascii'),
b"<?xml version='1.0' encoding='ascii'?>\n"
b'<body>t&#227;g</body>')
def test_issue3151(self):
e = ET.XML('<prefix:localname xmlns:prefix="${stuff}"/>')
self.assertEqual(e.tag, '{${stuff}}localname')
t = ET.ElementTree(e)
self.assertEqual(ET.tostring(e), b'<ns0:localname xmlns:ns0="${stuff}" />')
def test_issue6565(self):
elem = ET.XML("<body><tag/></body>")
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 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)
self.assertEqual(e2.tag, 'foo')
self.assertEqual(e2.attrib['bar'], 42)
self.assertEqual(len(e2), 2)
self.assertEqualElements(e, e2)
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('<tag><empty /></tag>').findtext('empty'), '')
def test_find_xpath(self):
LINEAR_XML = '''
<body>
<tag class='a'/>
<tag class='b'/>
<tag class='c'/>
<tag class='d'/>
</body>'''
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')
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_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("<html><body>this is a <i>paragraph</i>.</body>..</html>")
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("<root>a&amp;<sub>b&amp;</sub>c&amp;</root>")
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('''
<document>
<house>
<room>bedroom1</room>
<room>bedroom2</room>
</house>
<shed>nothing here
</shed>
<house>
<room>bedroom8</room>
</house>
</document>''')
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 = ('<!DOCTYPE html PUBLIC'
' "-//W3C//DTD XHTML 1.0 Transitional//EN"'
' "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">'
'<html>text<div>subtext</div>tail</html>')
sample2 = '''<toplevel>sometext</toplevel>'''
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_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
# 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 = '<file><line>22</line></file>'
sample2 = ('<!DOCTYPE html PUBLIC'
' "-//W3C//DTD XHTML 1.0 Transitional//EN"'
' "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">'
'<html>text</html>')
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_subclass_doctype(self):
_doctype = None
class MyParserWithDoctype(ET.XMLParser):
def doctype(self, name, pubid, system):
nonlocal _doctype
_doctype = (name, pubid, system)
parser = MyParserWithDoctype()
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'))
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), '<tag>abc</tag>')
self.assertEqual(serialize(elem, encoding="utf-8"),
b'<tag>abc</tag>')
self.assertEqual(serialize(elem, encoding="us-ascii"),
b'<tag>abc</tag>')
for enc in ("iso-8859-1", "utf-16", "utf-32"):
self.assertEqual(serialize(elem, encoding=enc),
("<?xml version='1.0' encoding='%s'?>\n"
"<tag>abc</tag>" % enc).encode(enc))
elem = ET.Element("tag")
elem.text = "<&\"\'>"
self.assertEqual(serialize(elem), '<tag>&lt;&amp;"\'&gt;</tag>')
self.assertEqual(serialize(elem, encoding="utf-8"),
b'<tag>&lt;&amp;"\'&gt;</tag>')
self.assertEqual(serialize(elem, encoding="us-ascii"),
b'<tag>&lt;&amp;"\'&gt;</tag>')
for enc in ("iso-8859-1", "utf-16", "utf-32"):
self.assertEqual(serialize(elem, encoding=enc),
("<?xml version='1.0' encoding='%s'?>\n"
"<tag>&lt;&amp;\"'&gt;</tag>" % enc).encode(enc))
elem = ET.Element("tag")
elem.attrib["key"] = "<&\"\'>"
self.assertEqual(serialize(elem), '<tag key="&lt;&amp;&quot;\'&gt;" />')
self.assertEqual(serialize(elem, encoding="utf-8"),
b'<tag key="&lt;&amp;&quot;\'&gt;" />')
self.assertEqual(serialize(elem, encoding="us-ascii"),
b'<tag key="&lt;&amp;&quot;\'&gt;" />')
for enc in ("iso-8859-1", "utf-16", "utf-32"):
self.assertEqual(serialize(elem, encoding=enc),
("<?xml version='1.0' encoding='%s'?>\n"
"<tag key=\"&lt;&amp;&quot;'&gt;\" />" % enc).encode(enc))
elem = ET.Element("tag")
elem.text = '\xe5\xf6\xf6<>'
self.assertEqual(serialize(elem), '<tag>\xe5\xf6\xf6&lt;&gt;</tag>')
self.assertEqual(serialize(elem, encoding="utf-8"),
b'<tag>\xc3\xa5\xc3\xb6\xc3\xb6&lt;&gt;</tag>')
self.assertEqual(serialize(elem, encoding="us-ascii"),
b'<tag>&#229;&#246;&#246;&lt;&gt;</tag>')
for enc in ("iso-8859-1", "utf-16", "utf-32"):
self.assertEqual(serialize(elem, encoding=enc),
("<?xml version='1.0' encoding='%s'?>\n"
"<tag>åöö&lt;&gt;</tag>" % enc).encode(enc))
elem = ET.Element("tag")
elem.attrib["key"] = '\xe5\xf6\xf6<>'
self.assertEqual(serialize(elem), '<tag key="\xe5\xf6\xf6&lt;&gt;" />')
self.assertEqual(serialize(elem, encoding="utf-8"),
b'<tag key="\xc3\xa5\xc3\xb6\xc3\xb6&lt;&gt;" />')
self.assertEqual(serialize(elem, encoding="us-ascii"),
b'<tag key="&#229;&#246;&#246;&lt;&gt;" />')
for enc in ("iso-8859-1", "utf-16", "utf-16le", "utf-16be", "utf-32"):
self.assertEqual(serialize(elem, encoding=enc),
("<?xml version='1.0' encoding='%s'?>\n"
"<tag key=\"åöö&lt;&gt;\" />" % enc).encode(enc))
def test_write_to_filename(self):
tree = ET.ElementTree(ET.XML('''<site />'''))
tree.write(TESTFN)
with open(TESTFN, 'rb') as f:
self.assertEqual(f.read(), b'''<site />''')
def test_write_to_text_file(self):
tree = ET.ElementTree(ET.XML('''<site />'''))
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'''<site />''')
def test_write_to_binary_file(self):
tree = ET.ElementTree(ET.XML('''<site />'''))
with open(TESTFN, 'wb') as f:
tree.write(f)
self.assertFalse(f.closed)
with open(TESTFN, 'rb') as f:
self.assertEqual(f.read(), b'''<site />''')
def test_write_to_binary_file_with_bom(self):
tree = ET.ElementTree(ET.XML('''<site />'''))
# 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(),
'''<?xml version='1.0' encoding='utf-16'?>\n'''
'''<site />'''.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(),
'''<?xml version='1.0' encoding='utf-16'?>\n'''
'''<site />'''.encode("utf-16"))
def test_read_from_stringio(self):
tree = ET.ElementTree()
stream = io.StringIO('''<?xml version="1.0"?><site></site>''')
tree.parse(stream)
self.assertEqual(tree.getroot().tag, 'site')
def test_write_to_stringio(self):
tree = ET.ElementTree(ET.XML('''<site />'''))
stream = io.StringIO()
tree.write(stream, encoding='unicode')
self.assertEqual(stream.getvalue(), '''<site />''')
def test_read_from_bytesio(self):
tree = ET.ElementTree()
raw = io.BytesIO(b'''<?xml version="1.0"?><site></site>''')
tree.parse(raw)
self.assertEqual(tree.getroot().tag, 'site')
def test_write_to_bytesio(self):
tree = ET.ElementTree(ET.XML('''<site />'''))
raw = io.BytesIO()
tree.write(raw)
self.assertEqual(raw.getvalue(), b'''<site />''')
class dummy:
pass
def test_read_from_user_text_reader(self):
stream = io.StringIO('''<?xml version="1.0"?><site></site>''')
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('''<site />'''))
stream = io.StringIO()
writer = self.dummy()
writer.write = stream.write
tree.write(writer, encoding='unicode')
self.assertEqual(stream.getvalue(), '''<site />''')
def test_read_from_user_binary_reader(self):
raw = io.BytesIO(b'''<?xml version="1.0"?><site></site>''')
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('''<site />'''))
raw = io.BytesIO()
writer = self.dummy()
writer.write = raw.write
tree.write(writer)
self.assertEqual(raw.getvalue(), b'''<site />''')
def test_write_to_user_binary_writer_with_bom(self):
tree = ET.ElementTree(ET.XML('''<site />'''))
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(),
'''<?xml version='1.0' encoding='utf-16'?>\n'''
'''<site />'''.encode("utf-16"))
def test_tostringlist_invariant(self):
root = ET.fromstring('<tag>foo</tag>')
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')))
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('<tag>&foo;</tag>').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("<a>foo</a>")
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):
self.assertEqual(pyET.Element.__module__, 'xml.etree.ElementTree')
self.assertEqual(pyET.SubElement.__module__, 'xml.etree.ElementTree')
# --------------------------------------------------------------------
class CleanContext(object):
"""Provide default namespace mapping and path cache."""
checkwarnings = None
def __init__(self, quiet=False):
if sys.flags.optimize >= 2:
# under -OO, doctests cannot be run and therefore not all warnings
# will be emitted
quiet = True
deprecations = (
# Search behaviour is broken if search path starts with "/".
("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 '.+'", FutureWarning),
# Element.getchildren() and Element.getiterator() are deprecated.
("This method will be removed in future versions. "
"Use .+ instead.", DeprecationWarning),
("This method will be removed in future versions. "
"Use .+ instead.", PendingDeprecationWarning))
self.checkwarnings = support.check_warnings(*deprecations, quiet=quiet)
def __enter__(self):
from xml.etree import ElementPath
self._nsmap = ET.register_namespace._namespace_map
# Copy the default namespace mapping
self._nsmap_copy = self._nsmap.copy()
# Copy the path cache (should be empty)
self._path_cache = ElementPath._cache
ElementPath._cache = self._path_cache.copy()
self.checkwarnings.__enter__()
def __exit__(self, *args):
from xml.etree import ElementPath
# Restore mapping and path cache
self._nsmap.clear()
self._nsmap.update(self._nsmap_copy)
ElementPath._cache = self._path_cache
self.checkwarnings.__exit__(*args)
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,
ElementTreeTest,
IOTest,
ParseErrorTest,
XIncludeTest,
ElementTreeTypeTest,
ElementFindTest,
ElementIterTest,
TreeBuilderTest,
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,
])
try:
# XXX the C module should give the same warnings as the Python module
with CleanContext(quiet=(pyET is not ET)):
support.run_unittest(*test_classes)
finally:
# don't interfere with subsequent tests
ET = pyET = None
if __name__ == '__main__':
test_main()