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# xml.etree test.  This file contains enough tests to make sure that
# all included components work as they should.
# Large parts are extracted from the upstream test suite.

# IMPORTANT: the same doctests 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.
# Don't re-import "xml.etree.ElementTree" module in the docstring,
# except if the test is specific to the Python implementation.

import sys
import cgi

from test import test_support
from test.test_support import findfile

from xml.etree import ElementTree as ET

SIMPLE_XMLFILE = findfile("simple.xml", subdir="xmltestdata")
SIMPLE_NS_XMLFILE = findfile("simple-ns.xml", subdir="xmltestdata")

SAMPLE_XML = """\

  text
  
  
    subtext
  

"""

SAMPLE_SECTION = """\

  subtext
  
  
    
  

"""

SAMPLE_XML_NS = """

  text
  
  
    subtext
  

"""


def sanity():
    """
    Import sanity.

    >>> from xml.etree import ElementTree
    >>> from xml.etree import ElementInclude
    >>> from xml.etree import ElementPath
    """

def check_method(method):
    if not hasattr(method, '__call__'):
        print method, "not callable"

def serialize(elem, to_string=True, **options):
    import StringIO
    file = StringIO.StringIO()
    tree = ET.ElementTree(elem)
    tree.write(file, **options)
    if to_string:
        return file.getvalue()
    else:
        file.seek(0)
        return file

def summarize(elem):
    if elem.tag == ET.Comment:
        return ""
    return elem.tag

def summarize_list(seq):
    return [summarize(elem) for elem in seq]

def normalize_crlf(tree):
    for elem in tree.iter():
        if elem.text:
            elem.text = elem.text.replace("\r\n", "\n")
        if elem.tail:
            elem.tail = elem.tail.replace("\r\n", "\n")

def check_string(string):
    len(string)
    for char in string:
        if len(char) != 1:
            print "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"
    if mapping["key"] != "value":
        print "expected value string, got %r" % mapping["key"]

def check_element(element):
    if not ET.iselement(element):
        print "not an element"
    if not hasattr(element, "tag"):
        print "no tag member"
    if not hasattr(element, "attrib"):
        print "no attrib member"
    if not hasattr(element, "text"):
        print "no text member"
    if not hasattr(element, "tail"):
        print "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 tree tests

def interface():
    r"""
    Test element tree interface.

    >>> 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)
    >>> repr(element)   # doctest: +ELLIPSIS
    ""
    >>> element = ET.Element("tag", key="value")

    Make sure all standard element methods exist.

    >>> 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.

    >>> check_method(element.iter("tag").next)
    >>> check_method(element.iterfind("tag").next)
    >>> check_method(element.iterfind("*").next)
    >>> check_method(tree.iter("tag").next)
    >>> check_method(tree.iterfind("tag").next)
    >>> check_method(tree.iterfind("*").next)

    These aliases are provided:

    >>> assert ET.XML == ET.fromstring
    >>> assert ET.PI == ET.ProcessingInstruction
    >>> assert ET.XMLParser == ET.XMLTreeBuilder
    """

def simpleops():
    """
    Basic method sanity checks.

    >>> elem = ET.XML("")
    >>> serialize(elem)
    ''
    >>> e = ET.Element("tag2")
    >>> elem.append(e)
    >>> serialize(elem)
    ''
    >>> elem.remove(e)
    >>> serialize(elem)
    ''
    >>> elem.insert(0, e)
    >>> serialize(elem)
    ''
    >>> elem.remove(e)
    >>> elem.extend([e])
    >>> serialize(elem)
    ''
    >>> elem.remove(e)

    >>> element = ET.Element("tag", key="value")
    >>> serialize(element) # 1
    ''
    >>> subelement = ET.Element("subtag")
    >>> element.append(subelement)
    >>> serialize(element) # 2
    ''
    >>> element.insert(0, subelement)
    >>> serialize(element) # 3
    ''
    >>> element.remove(subelement)
    >>> serialize(element) # 4
    ''
    >>> element.remove(subelement)
    >>> serialize(element) # 5
    ''
    >>> element.remove(subelement)
    Traceback (most recent call last):
    ValueError: list.remove(x): x not in list
    >>> serialize(element) # 6
    ''
    >>> element[0:0] = [subelement, subelement, subelement]
    >>> serialize(element[1])
    ''
    >>> element[1:9] == [element[1], element[2]]
    True
    >>> element[:9:2] == [element[0], element[2]]
    True
    >>> del element[1:2]
    >>> serialize(element)
    ''
    """

def cdata():
    """
    Test CDATA handling (etc).

    >>> serialize(ET.XML("hello"))
    'hello'
    >>> serialize(ET.XML("hello"))
    'hello'
    >>> serialize(ET.XML(""))
    'hello'
    """

# Only with Python implementation
def simplefind():
    """
    Test find methods using the elementpath fallback.

    >>> from xml.etree import ElementTree

    >>> CurrentElementPath = ElementTree.ElementPath
    >>> ElementTree.ElementPath = ElementTree._SimpleElementPath()
    >>> elem = ElementTree.XML(SAMPLE_XML)
    >>> elem.find("tag").tag
    'tag'
    >>> ElementTree.ElementTree(elem).find("tag").tag
    'tag'
    >>> elem.findtext("tag")
    'text'
    >>> elem.findtext("tog")
    >>> elem.findtext("tog", "default")
    'default'
    >>> ElementTree.ElementTree(elem).findtext("tag")
    'text'
    >>> summarize_list(elem.findall("tag"))
    ['tag', 'tag']
    >>> summarize_list(elem.findall(".//tag"))
    ['tag', 'tag', 'tag']

    Path syntax doesn't work in this case.

    >>> elem.find("section/tag")
    >>> elem.findtext("section/tag")
    >>> summarize_list(elem.findall("section/tag"))
    []

    >>> ElementTree.ElementPath = CurrentElementPath
    """

def find():
    """
    Test find methods (including xpath syntax).

    >>> elem = ET.XML(SAMPLE_XML)
    >>> elem.find("tag").tag
    'tag'
    >>> ET.ElementTree(elem).find("tag").tag
    'tag'
    >>> elem.find("section/tag").tag
    'tag'
    >>> elem.find("./tag").tag
    'tag'
    >>> ET.ElementTree(elem).find("./tag").tag
    'tag'
    >>> ET.ElementTree(elem).find("/tag").tag
    'tag'
    >>> elem[2] = ET.XML(SAMPLE_SECTION)
    >>> elem.find("section/nexttag").tag
    'nexttag'
    >>> ET.ElementTree(elem).find("section/tag").tag
    'tag'
    >>> ET.ElementTree(elem).find("tog")
    >>> ET.ElementTree(elem).find("tog/foo")
    >>> elem.findtext("tag")
    'text'
    >>> elem.findtext("section/nexttag")
    ''
    >>> elem.findtext("section/nexttag", "default")
    ''
    >>> elem.findtext("tog")
    >>> elem.findtext("tog", "default")
    'default'
    >>> ET.ElementTree(elem).findtext("tag")
    'text'
    >>> ET.ElementTree(elem).findtext("tog/foo")
    >>> ET.ElementTree(elem).findtext("tog/foo", "default")
    'default'
    >>> ET.ElementTree(elem).findtext("./tag")
    'text'
    >>> ET.ElementTree(elem).findtext("/tag")
    'text'
    >>> elem.findtext("section/tag")
    'subtext'
    >>> ET.ElementTree(elem).findtext("section/tag")
    'subtext'
    >>> summarize_list(elem.findall("."))
    ['body']
    >>> summarize_list(elem.findall("tag"))
    ['tag', 'tag']
    >>> summarize_list(elem.findall("tog"))
    []
    >>> summarize_list(elem.findall("tog/foo"))
    []
    >>> summarize_list(elem.findall("*"))
    ['tag', 'tag', 'section']
    >>> summarize_list(elem.findall(".//tag"))
    ['tag', 'tag', 'tag', 'tag']
    >>> summarize_list(elem.findall("section/tag"))
    ['tag']
    >>> summarize_list(elem.findall("section//tag"))
    ['tag', 'tag']
    >>> summarize_list(elem.findall("section/*"))
    ['tag', 'nexttag', 'nextsection']
    >>> summarize_list(elem.findall("section//*"))
    ['tag', 'nexttag', 'nextsection', 'tag']
    >>> summarize_list(elem.findall("section/.//*"))
    ['tag', 'nexttag', 'nextsection', 'tag']
    >>> summarize_list(elem.findall("*/*"))
    ['tag', 'nexttag', 'nextsection']
    >>> summarize_list(elem.findall("*//*"))
    ['tag', 'nexttag', 'nextsection', 'tag']
    >>> summarize_list(elem.findall("*/tag"))
    ['tag']
    >>> summarize_list(elem.findall("*/./tag"))
    ['tag']
    >>> summarize_list(elem.findall("./tag"))
    ['tag', 'tag']
    >>> summarize_list(elem.findall(".//tag"))
    ['tag', 'tag', 'tag', 'tag']
    >>> summarize_list(elem.findall("././tag"))
    ['tag', 'tag']
    >>> summarize_list(elem.findall(".//tag[@class]"))
    ['tag', 'tag', 'tag']
    >>> summarize_list(elem.findall(".//tag[@class='a']"))
    ['tag']
    >>> summarize_list(elem.findall(".//tag[@class='b']"))
    ['tag', 'tag']
    >>> summarize_list(elem.findall(".//tag[@id]"))
    ['tag']
    >>> summarize_list(elem.findall(".//section[tag]"))
    ['section']
    >>> summarize_list(elem.findall(".//section[element]"))
    []
    >>> summarize_list(elem.findall("../tag"))
    []
    >>> summarize_list(elem.findall("section/../tag"))
    ['tag', 'tag']
    >>> summarize_list(ET.ElementTree(elem).findall("./tag"))
    ['tag', 'tag']

    Following example is invalid in 1.2.
    A leading '*' is assumed in 1.3.

    >>> elem.findall("section//") == elem.findall("section//*")
    True

    ET's Path module handles this case incorrectly; this gives
    a warning in 1.3, and the behaviour will be modified in 1.4.

    >>> summarize_list(ET.ElementTree(elem).findall("/tag"))
    ['tag', 'tag']

    >>> elem = ET.XML(SAMPLE_XML_NS)
    >>> summarize_list(elem.findall("tag"))
    []
    >>> summarize_list(elem.findall("{http://effbot.org/ns}tag"))
    ['{http://effbot.org/ns}tag', '{http://effbot.org/ns}tag']
    >>> summarize_list(elem.findall(".//{http://effbot.org/ns}tag"))
    ['{http://effbot.org/ns}tag', '{http://effbot.org/ns}tag', '{http://effbot.org/ns}tag']
    """

def file_init():
    """
    >>> import StringIO

    >>> stringfile = StringIO.StringIO(SAMPLE_XML)
    >>> tree = ET.ElementTree(file=stringfile)
    >>> tree.find("tag").tag
    'tag'
    >>> tree.find("section/tag").tag
    'tag'

    >>> tree = ET.ElementTree(file=SIMPLE_XMLFILE)
    >>> tree.find("element").tag
    'element'
    >>> tree.find("element/../empty-element").tag
    'empty-element'
    """

def bad_find():
    """
    Check bad or unsupported path expressions.

    >>> elem = ET.XML(SAMPLE_XML)
    >>> elem.findall("/tag")
    Traceback (most recent call last):
    SyntaxError: cannot use absolute path on element
    """

def path_cache():
    """
    Check that the path cache behaves sanely.

    >>> elem = ET.XML(SAMPLE_XML)
    >>> for i in range(10): ET.ElementTree(elem).find('./'+str(i))
    >>> cache_len_10 = len(ET.ElementPath._cache)
    >>> for i in range(10): ET.ElementTree(elem).find('./'+str(i))
    >>> len(ET.ElementPath._cache) == cache_len_10
    True
    >>> for i in range(20): ET.ElementTree(elem).find('./'+str(i))
    >>> len(ET.ElementPath._cache) > cache_len_10
    True
    >>> for i in range(600): ET.ElementTree(elem).find('./'+str(i))
    >>> len(ET.ElementPath._cache) < 500
    True
    """

def copy():
    """
    Test copy handling (etc).

    >>> import copy
    >>> e1 = ET.XML("hello")
    >>> e2 = copy.copy(e1)
    >>> e3 = copy.deepcopy(e1)
    >>> e1.find("foo").tag = "bar"
    >>> serialize(e1)
    'hello'
    >>> serialize(e2)
    'hello'
    >>> serialize(e3)
    'hello'

    """

def attrib():
    """
    Test attribute handling.

    >>> elem = ET.Element("tag")
    >>> elem.get("key") # 1.1
    >>> elem.get("key", "default") # 1.2
    'default'
    >>> elem.set("key", "value")
    >>> elem.get("key") # 1.3
    'value'

    >>> elem = ET.Element("tag", key="value")
    >>> elem.get("key") # 2.1
    'value'
    >>> elem.attrib # 2.2
    {'key': 'value'}

    >>> attrib = {"key": "value"}
    >>> elem = ET.Element("tag", attrib)
    >>> attrib.clear() # check for aliasing issues
    >>> elem.get("key") # 3.1
    'value'
    >>> elem.attrib # 3.2
    {'key': 'value'}

    >>> attrib = {"key": "value"}
    >>> elem = ET.Element("tag", **attrib)
    >>> attrib.clear() # check for aliasing issues
    >>> elem.get("key") # 4.1
    'value'
    >>> elem.attrib # 4.2
    {'key': 'value'}

    >>> elem = ET.Element("tag", {"key": "other"}, key="value")
    >>> elem.get("key") # 5.1
    'value'
    >>> elem.attrib # 5.2
    {'key': 'value'}

    >>> elem = ET.Element('test')
    >>> elem.text = "aa"
    >>> elem.set('testa', 'testval')
    >>> elem.set('testb', 'test2')
    >>> ET.tostring(elem)
    'aa'
    >>> sorted(elem.keys())
    ['testa', 'testb']
    >>> sorted(elem.items())
    [('testa', 'testval'), ('testb', 'test2')]
    >>> elem.attrib['testb']
    'test2'
    >>> elem.attrib['testb'] = 'test1'
    >>> elem.attrib['testc'] = 'test2'
    >>> ET.tostring(elem)
    'aa'
    """

def makeelement():
    """
    Test makeelement handling.

    >>> elem = ET.Element("tag")
    >>> attrib = {"key": "value"}
    >>> subelem = elem.makeelement("subtag", attrib)
    >>> if subelem.attrib is attrib:
    ...     print "attrib aliasing"
    >>> elem.append(subelem)
    >>> serialize(elem)
    ''

    >>> elem.clear()
    >>> serialize(elem)
    ''
    >>> elem.append(subelem)
    >>> serialize(elem)
    ''
    >>> elem.extend([subelem, subelem])
    >>> serialize(elem)
    ''
    >>> elem[:] = [subelem]
    >>> serialize(elem)
    ''
    >>> elem[:] = tuple([subelem])
    >>> serialize(elem)
    ''

    """

def parsefile():
    """
    Test parsing from file.

    >>> tree = ET.parse(SIMPLE_XMLFILE)
    >>> normalize_crlf(tree)
    >>> tree.write(sys.stdout)
    
       text
       texttail
       
    
    >>> tree = ET.parse(SIMPLE_NS_XMLFILE)
    >>> normalize_crlf(tree)
    >>> tree.write(sys.stdout)
    
       text
       texttail
       
    

    >>> with open(SIMPLE_XMLFILE) as f:
    ...     data = f.read()

    >>> parser = ET.XMLParser()
    >>> parser.version  # doctest: +ELLIPSIS
    'Expat ...'
    >>> parser.feed(data)
    >>> print serialize(parser.close())
    
       text
       texttail
       
    

    >>> parser = ET.XMLTreeBuilder() # 1.2 compatibility
    >>> parser.feed(data)
    >>> print serialize(parser.close())
    
       text
       texttail
       
    

    >>> target = ET.TreeBuilder()
    >>> parser = ET.XMLParser(target=target)
    >>> parser.feed(data)
    >>> print serialize(parser.close())
    
       text
       texttail
       
    
    """

def parseliteral():
    """
    >>> element = ET.XML("text")
    >>> ET.ElementTree(element).write(sys.stdout)
    text
    >>> element = ET.fromstring("text")
    >>> ET.ElementTree(element).write(sys.stdout)
    text
    >>> sequence = ["", "text"]
    >>> element = ET.fromstringlist(sequence)
    >>> print ET.tostring(element)
    text
    >>> print "".join(ET.tostringlist(element))
    text
    >>> ET.tostring(element, "ascii")
    "\\ntext"
    >>> _, ids = ET.XMLID("text")
    >>> len(ids)
    0
    >>> _, ids = ET.XMLID("text")
    >>> len(ids)
    1
    >>> ids["body"].tag
    'body'
    """

def iterparse():
    """
    Test iterparse interface.

    >>> iterparse = ET.iterparse

    >>> context = iterparse(SIMPLE_XMLFILE)
    >>> action, elem = next(context)
    >>> print action, elem.tag
    end element
    >>> for action, elem in context:
    ...   print action, elem.tag
    end element
    end empty-element
    end root
    >>> context.root.tag
    'root'

    >>> context = iterparse(SIMPLE_NS_XMLFILE)
    >>> for action, elem in context:
    ...   print action, elem.tag
    end {namespace}element
    end {namespace}element
    end {namespace}empty-element
    end {namespace}root

    >>> events = ()
    >>> context = iterparse(SIMPLE_XMLFILE, events)
    >>> for action, elem in context:
    ...   print action, elem.tag

    >>> events = ()
    >>> context = iterparse(SIMPLE_XMLFILE, events=events)
    >>> for action, elem in context:
    ...   print action, elem.tag

    >>> events = ("start", "end")
    >>> context = iterparse(SIMPLE_XMLFILE, events)
    >>> for action, elem in context:
    ...   print action, elem.tag
    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)
    >>> for action, elem in context:
    ...   if action in ("start", "end"):
    ...     print action, elem.tag
    ...   else:
    ...     print action, elem
    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

    >>> import StringIO

    >>> events = ('start-ns', 'end-ns')
    >>> context = ET.iterparse(StringIO.StringIO(r""), events)
    >>> for action, elem in context:
    ...   print action, elem
    start-ns ('', '')
    end-ns None

    >>> events = ("start", "end", "bogus")
    >>> with open(SIMPLE_XMLFILE, "rb") as f:
    ...     iterparse(f, events)
    Traceback (most recent call last):
    ValueError: unknown event 'bogus'

    >>> source = StringIO.StringIO(
    ...     "\\n"
    ...     "text\\n")
    >>> events = ("start-ns",)
    >>> context = iterparse(source, events)
    >>> for action, elem in context:
    ...     print action, elem
    start-ns ('', u'http://\\xe9ffbot.org/ns')
    start-ns (u'cl\\xe9', 'http://effbot.org/ns')

    >>> source = StringIO.StringIO("junk")
    >>> try:
    ...   for action, elem in iterparse(source):
    ...     print action, elem.tag
    ... except ET.ParseError, v:
    ...   print v
    end document
    junk after document element: line 1, column 12
    """

def writefile():
    """
    >>> elem = ET.Element("tag")
    >>> elem.text = "text"
    >>> serialize(elem)
    'text'
    >>> ET.SubElement(elem, "subtag").text = "subtext"
    >>> serialize(elem)
    'textsubtext'

    Test tag suppression
    >>> elem.tag = None
    >>> serialize(elem)
    'textsubtext'
    >>> elem.insert(0, ET.Comment("comment"))
    >>> serialize(elem)     # assumes 1.3
    'textsubtext'
    >>> elem[0] = ET.PI("key", "value")
    >>> serialize(elem)
    'textsubtext'
    """

def custom_builder():
    """
    Test parser w. custom builder.

    >>> with open(SIMPLE_XMLFILE) as f:
    ...     data = f.read()
    >>> class Builder:
    ...     def start(self, tag, attrib):
    ...         print "start", tag
    ...     def end(self, tag):
    ...         print "end", tag
    ...     def data(self, text):
    ...         pass
    >>> builder = Builder()
    >>> parser = ET.XMLParser(target=builder)
    >>> parser.feed(data)
    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:
    ...     def start(self, tag, attrib):
    ...         print "start", tag
    ...     def end(self, tag):
    ...         print "end", tag
    ...     def data(self, text):
    ...         pass
    ...     def pi(self, target, data):
    ...         print "pi", target, repr(data)
    ...     def comment(self, data):
    ...         print "comment", repr(data)
    >>> builder = Builder()
    >>> parser = ET.XMLParser(target=builder)
    >>> parser.feed(data)
    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 getchildren():
    """
    Test Element.getchildren()

    >>> with open(SIMPLE_XMLFILE, "r") as f:
    ...     tree = ET.parse(f)
    >>> for elem in tree.getroot().iter():
    ...     summarize_list(elem.getchildren())
    ['element', 'element', 'empty-element']
    []
    []
    []
    >>> for elem in tree.getiterator():
    ...     summarize_list(elem.getchildren())
    ['element', 'element', 'empty-element']
    []
    []
    []

    >>> elem = ET.XML(SAMPLE_XML)
    >>> len(elem.getchildren())
    3
    >>> len(elem[2].getchildren())
    1
    >>> elem[:] == elem.getchildren()
    True
    >>> child1 = elem[0]
    >>> child2 = elem[2]
    >>> del elem[1:2]
    >>> len(elem.getchildren())
    2
    >>> child1 == elem[0]
    True
    >>> child2 == elem[1]
    True
    >>> elem[0:2] = [child2, child1]
    >>> child2 == elem[0]
    True
    >>> child1 == elem[1]
    True
    >>> child1 == elem[0]
    False
    >>> elem.clear()
    >>> elem.getchildren()
    []
    """

def writestring():
    """
    >>> elem = ET.XML("text")
    >>> ET.tostring(elem)
    'text'
    >>> elem = ET.fromstring("text")
    >>> ET.tostring(elem)
    'text'
    """

def check_encoding(encoding):
    """
    >>> check_encoding("ascii")
    >>> check_encoding("us-ascii")
    >>> check_encoding("iso-8859-1")
    >>> check_encoding("iso-8859-15")
    >>> check_encoding("cp437")
    >>> check_encoding("mac-roman")
    >>> check_encoding("gbk")
    Traceback (most recent call last):
    ValueError: multi-byte encodings are not supported
    >>> check_encoding("cp037")
    Traceback (most recent call last):
    ParseError: unknown encoding: line 1, column 30
    """
    ET.XML("" % encoding)

def encoding():
    r"""
    Test encoding issues.

    >>> elem = ET.Element("tag")
    >>> elem.text = u"abc"
    >>> serialize(elem)
    'abc'
    >>> serialize(elem, encoding="utf-8")
    'abc'
    >>> serialize(elem, encoding="us-ascii")
    'abc'
    >>> serialize(elem, encoding="iso-8859-1")
    "\nabc"

    >>> elem.text = "<&\"\'>"
    >>> serialize(elem)
    '<&"\'>'
    >>> serialize(elem, encoding="utf-8")
    '<&"\'>'
    >>> serialize(elem, encoding="us-ascii") # cdata characters
    '<&"\'>'
    >>> serialize(elem, encoding="iso-8859-1")
    '\n<&"\'>'

    >>> elem.attrib["key"] = "<&\"\'>"
    >>> elem.text = None
    >>> serialize(elem)
    ''
    >>> serialize(elem, encoding="utf-8")
    ''
    >>> serialize(elem, encoding="us-ascii")
    ''
    >>> serialize(elem, encoding="iso-8859-1")
    '\n'

    >>> elem.text = u'\xe5\xf6\xf6<>'
    >>> elem.attrib.clear()
    >>> serialize(elem)
    'åöö<>'
    >>> serialize(elem, encoding="utf-8")
    '\xc3\xa5\xc3\xb6\xc3\xb6<>'
    >>> serialize(elem, encoding="us-ascii")
    'åöö<>'
    >>> serialize(elem, encoding="iso-8859-1")
    "\n\xe5\xf6\xf6<>"

    >>> elem.attrib["key"] = u'\xe5\xf6\xf6<>'
    >>> elem.text = None
    >>> serialize(elem)
    ''
    >>> serialize(elem, encoding="utf-8")
    ''
    >>> serialize(elem, encoding="us-ascii")
    ''
    >>> serialize(elem, encoding="iso-8859-1")
    '\n'
    """

def methods():
    r"""
    Test serialization methods.

    >>> e = ET.XML("")
    >>> e.tail = "\n"
    >>> serialize(e)
    '\n'
    >>> serialize(e, method=None)
    '\n'
    >>> serialize(e, method="xml")
    '\n'
    >>> serialize(e, method="html")
    '\n'
    >>> serialize(e, method="text")
    '1 < 2\n'
    """

def iterators():
    """
    Test iterators.

    >>> e = ET.XML("this is a paragraph...")
    >>> summarize_list(e.iter())
    ['html', 'body', 'i']
    >>> summarize_list(e.find("body").iter())
    ['body', 'i']
    >>> summarize(next(e.iter()))
    'html'
    >>> "".join(e.itertext())
    'this is a paragraph...'
    >>> "".join(e.find("body").itertext())
    'this is a paragraph.'
    >>> next(e.itertext())
    'this is a '

    Method iterparse should return an iterator. See bug 6472.

    >>> sourcefile = serialize(e, to_string=False)
    >>> next(ET.iterparse(sourcefile))  # doctest: +ELLIPSIS
    ('end', )

    >>> tree = ET.ElementTree(None)
    >>> tree.iter()
    Traceback (most recent call last):
    AttributeError: 'NoneType' object has no attribute 'iter'
    """

ENTITY_XML = """\

%user-entities;
]>
&entity;
"""

def entity():
    """
    Test entity handling.

    1) good entities

    >>> e = ET.XML("test")
    >>> serialize(e)
    'test'

    2) bad entities

    >>> ET.XML("&entity;")
    Traceback (most recent call last):
    ParseError: undefined entity: line 1, column 10

    >>> ET.XML(ENTITY_XML)
    Traceback (most recent call last):
    ParseError: undefined entity &entity;: line 5, column 10

    3) custom entity

    >>> parser = ET.XMLParser()
    >>> parser.entity["entity"] = "text"
    >>> parser.feed(ENTITY_XML)
    >>> root = parser.close()
    >>> serialize(root)
    'text'
    """

def error(xml):
    """

    Test error handling.

    >>> issubclass(ET.ParseError, SyntaxError)
    True
    >>> error("foo").position
    (1, 0)
    >>> error("&foo;").position
    (1, 5)
    >>> error("foobar<").position
    (1, 6)

    """
    try:
        ET.XML(xml)
    except ET.ParseError:
        return sys.exc_value

def namespace():
    """
    Test namespace issues.

    1) xml namespace

    >>> elem = ET.XML("")
    >>> serialize(elem) # 1.1
    ''

    2) other "well-known" namespaces

    >>> elem = ET.XML("")
    >>> serialize(elem) # 2.1
    ''

    >>> elem = ET.XML("")
    >>> serialize(elem) # 2.2
    ''

    >>> elem = ET.XML("")
    >>> serialize(elem) # 2.3
    ''

    3) unknown namespaces
    >>> elem = ET.XML(SAMPLE_XML_NS)
    >>> print serialize(elem)
    
      text
      
      
        subtext
      
    
    """

def qname():
    """
    Test QName handling.

    1) decorated tags

    >>> elem = ET.Element("{uri}tag")
    >>> serialize(elem) # 1.1
    ''
    >>> elem = ET.Element(ET.QName("{uri}tag"))
    >>> serialize(elem) # 1.2
    ''
    >>> elem = ET.Element(ET.QName("uri", "tag"))
    >>> serialize(elem) # 1.3
    ''
    >>> elem = ET.Element(ET.QName("uri", "tag"))
    >>> subelem = ET.SubElement(elem, ET.QName("uri", "tag1"))
    >>> subelem = ET.SubElement(elem, ET.QName("uri", "tag2"))
    >>> serialize(elem) # 1.4
    ''

    2) decorated attributes

    >>> elem.clear()
    >>> elem.attrib["{uri}key"] = "value"
    >>> serialize(elem) # 2.1
    ''

    >>> elem.clear()
    >>> elem.attrib[ET.QName("{uri}key")] = "value"
    >>> serialize(elem) # 2.2
    ''

    3) decorated values are not converted by default, but the
       QName wrapper can be used for values

    >>> elem.clear()
    >>> elem.attrib["{uri}key"] = "{uri}value"
    >>> serialize(elem) # 3.1
    ''

    >>> elem.clear()
    >>> elem.attrib["{uri}key"] = ET.QName("{uri}value")
    >>> serialize(elem) # 3.2
    ''

    >>> elem.clear()
    >>> subelem = ET.Element("tag")
    >>> subelem.attrib["{uri1}key"] = ET.QName("{uri2}value")
    >>> elem.append(subelem)
    >>> elem.append(subelem)
    >>> serialize(elem) # 3.3
    ''

    4) Direct QName tests

    >>> str(ET.QName('ns', 'tag'))
    '{ns}tag'
    >>> str(ET.QName('{ns}tag'))
    '{ns}tag'
    >>> q1 = ET.QName('ns', 'tag')
    >>> q2 = ET.QName('ns', 'tag')
    >>> q1 == q2
    True
    >>> q2 = ET.QName('ns', 'other-tag')
    >>> q1 == q2
    False
    >>> q1 == 'ns:tag'
    False
    >>> q1 == '{ns}tag'
    True
    """

def doctype_public():
    """
    Test PUBLIC doctype.

    >>> elem = ET.XML(''
    ...   'text')

    """

def xpath_tokenizer(p):
    """
    Test the XPath tokenizer.

    >>> # tests from the xml specification
    >>> xpath_tokenizer("*")
    ['*']
    >>> xpath_tokenizer("text()")
    ['text', '()']
    >>> xpath_tokenizer("@name")
    ['@', 'name']
    >>> xpath_tokenizer("@*")
    ['@', '*']
    >>> xpath_tokenizer("para[1]")
    ['para', '[', '1', ']']
    >>> xpath_tokenizer("para[last()]")
    ['para', '[', 'last', '()', ']']
    >>> xpath_tokenizer("*/para")
    ['*', '/', 'para']
    >>> xpath_tokenizer("/doc/chapter[5]/section[2]")
    ['/', 'doc', '/', 'chapter', '[', '5', ']', '/', 'section', '[', '2', ']']
    >>> xpath_tokenizer("chapter//para")
    ['chapter', '//', 'para']
    >>> xpath_tokenizer("//para")
    ['//', 'para']
    >>> xpath_tokenizer("//olist/item")
    ['//', 'olist', '/', 'item']
    >>> xpath_tokenizer(".")
    ['.']
    >>> xpath_tokenizer(".//para")
    ['.', '//', 'para']
    >>> xpath_tokenizer("..")
    ['..']
    >>> xpath_tokenizer("../@lang")
    ['..', '/', '@', 'lang']
    >>> xpath_tokenizer("chapter[title]")
    ['chapter', '[', 'title', ']']
    >>> xpath_tokenizer("employee[@secretary and @assistant]")
    ['employee', '[', '@', 'secretary', '', 'and', '', '@', 'assistant', ']']

    >>> # additional tests
    >>> xpath_tokenizer("{http://spam}egg")
    ['{http://spam}egg']
    >>> xpath_tokenizer("./spam.egg")
    ['.', '/', 'spam.egg']
    >>> xpath_tokenizer(".//{http://spam}egg")
    ['.', '//', '{http://spam}egg']
    """
    from xml.etree import ElementPath
    out = []
    for op, tag in ElementPath.xpath_tokenizer(p):
        out.append(op or tag)
    return out

def processinginstruction():
    """
    Test ProcessingInstruction directly

    >>> ET.tostring(ET.ProcessingInstruction('test', 'instruction'))
    ''
    >>> ET.tostring(ET.PI('test', 'instruction'))
    ''

    Issue #2746

    >>> ET.tostring(ET.PI('test', ''))
    '?>'
    >>> ET.tostring(ET.PI('test', u'\xe3'), 'latin1')
    "\\n\\xe3?>"
    """

#
# xinclude tests (samples from appendix C of the xinclude specification)

XINCLUDE = {}

XINCLUDE["C1.xml"] = """\


  120 Mz is adequate for an average home user.
  

"""

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


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

"""

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


  This document has been accessed
   times.

"""

XINCLUDE["count.txt"] = "324387"

XINCLUDE["C2b.xml"] = """\


  This document has been accessed
   times.

"""

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


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

"""

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


  

"""

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


  
    
      
        Report error
      
    
  

"""

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


  Example.
  

""".format(cgi.escape(SIMPLE_XMLFILE, True))

def xinclude_loader(href, parse="xml", encoding=None):
    try:
        data = XINCLUDE[href]
    except KeyError:
        raise IOError("resource not found")
    if parse == "xml":
        from xml.etree.ElementTree import XML
        return XML(data)
    return data

def xinclude():
    r"""
    Basic inclusion example (XInclude C.1)

    >>> from xml.etree import ElementTree as ET
    >>> from xml.etree import ElementInclude

    >>> document = xinclude_loader("C1.xml")
    >>> ElementInclude.include(document, xinclude_loader)
    >>> print serialize(document) # C1
    
      120 Mz is adequate for an average home user.
      
      The opinions represented herein represent those of the individual
      and should not be interpreted as official policy endorsed by this
      organization.
    
    

    Textual inclusion example (XInclude C.2)

    >>> document = xinclude_loader("C2.xml")
    >>> ElementInclude.include(document, xinclude_loader)
    >>> print serialize(document) # C2
    
      This document has been accessed
      324387 times.
    

    Textual inclusion after sibling element (based on modified XInclude C.2)

    >>> document = xinclude_loader("C2b.xml")
    >>> ElementInclude.include(document, xinclude_loader)
    >>> print(serialize(document)) # C2b
    
      This document has been accessed
      324387 times.
    

    Textual inclusion of XML example (XInclude C.3)

    >>> document = xinclude_loader("C3.xml")
    >>> ElementInclude.include(document, xinclude_loader)
    >>> print serialize(document) # C3
    
      The following is the source of the "data.xml" resource:
      <?xml version='1.0'?>
    <data>
      <item><![CDATA[Brooks & Shields]]></item>
    </data>
    
    

    Fallback example (XInclude C.5)
    Note! Fallback support is not yet implemented

    >>> document = xinclude_loader("C5.xml")
    >>> ElementInclude.include(document, xinclude_loader)
    Traceback (most recent call last):
    IOError: resource not found
    >>> # print serialize(document) # C5
    """

def xinclude_default():
    """
    >>> from xml.etree import ElementInclude

    >>> document = xinclude_loader("default.xml")
    >>> ElementInclude.include(document)
    >>> print serialize(document) # default
    
      Example.
      
       text
       texttail
       
    
    
    """

#
# badly formatted xi:include tags

XINCLUDE_BAD = {}

XINCLUDE_BAD["B1.xml"] = """\


  120 Mz is adequate for an average home user.
  

"""

XINCLUDE_BAD["B2.xml"] = """\


    

"""

def xinclude_failures():
    r"""
    Test failure to locate included XML file.

    >>> from xml.etree import ElementInclude

    >>> def none_loader(href, parser, encoding=None):
    ...     return None

    >>> document = ET.XML(XINCLUDE["C1.xml"])
    >>> ElementInclude.include(document, loader=none_loader)
    Traceback (most recent call last):
    FatalIncludeError: cannot load 'disclaimer.xml' as 'xml'

    Test failure to locate included text file.

    >>> document = ET.XML(XINCLUDE["C2.xml"])
    >>> ElementInclude.include(document, loader=none_loader)
    Traceback (most recent call last):
    FatalIncludeError: cannot load 'count.txt' as 'text'

    Test bad parse type.

    >>> document = ET.XML(XINCLUDE_BAD["B1.xml"])
    >>> ElementInclude.include(document, loader=none_loader)
    Traceback (most recent call last):
    FatalIncludeError: unknown parse type in xi:include tag ('BAD_TYPE')

    Test xi:fallback outside xi:include.

    >>> document = ET.XML(XINCLUDE_BAD["B2.xml"])
    >>> ElementInclude.include(document, loader=none_loader)
    Traceback (most recent call last):
    FatalIncludeError: xi:fallback tag must be child of xi:include ('{http://www.w3.org/2001/XInclude}fallback')
    """

# --------------------------------------------------------------------
# reported bugs

def bug_xmltoolkit21():
    """

    marshaller gives obscure errors for non-string values

    >>> elem = ET.Element(123)
    >>> serialize(elem) # tag
    Traceback (most recent call last):
    TypeError: cannot serialize 123 (type int)
    >>> elem = ET.Element("elem")
    >>> elem.text = 123
    >>> serialize(elem) # text
    Traceback (most recent call last):
    TypeError: cannot serialize 123 (type int)
    >>> elem = ET.Element("elem")
    >>> elem.tail = 123
    >>> serialize(elem) # tail
    Traceback (most recent call last):
    TypeError: cannot serialize 123 (type int)
    >>> elem = ET.Element("elem")
    >>> elem.set(123, "123")
    >>> serialize(elem) # attribute key
    Traceback (most recent call last):
    TypeError: cannot serialize 123 (type int)
    >>> elem = ET.Element("elem")
    >>> elem.set("123", 123)
    >>> serialize(elem) # attribute value
    Traceback (most recent call last):
    TypeError: cannot serialize 123 (type int)

    """

def bug_xmltoolkit25():
    """

    typo in ElementTree.findtext

    >>> elem = ET.XML(SAMPLE_XML)
    >>> tree = ET.ElementTree(elem)
    >>> tree.findtext("tag")
    'text'
    >>> tree.findtext("section/tag")
    'subtext'

    """

def bug_xmltoolkit28():
    """

    .//tag causes exceptions

    >>> tree = ET.XML("")
    >>> summarize_list(tree.findall(".//thead"))
    []
    >>> summarize_list(tree.findall(".//tbody"))
    ['tbody']

    """

def bug_xmltoolkitX1():
    """

    dump() doesn't flush the output buffer

    >>> tree = ET.XML("")
    >>> ET.dump(tree); sys.stdout.write("tail")
    
    tail

    """

def bug_xmltoolkit39():
    """

    non-ascii element and attribute names doesn't work

    >>> tree = ET.XML("")
    >>> ET.tostring(tree, "utf-8")
    ''

    >>> tree = ET.XML("")
    >>> tree.attrib
    {u'\\xe4ttr': u'v\\xe4lue'}
    >>> ET.tostring(tree, "utf-8")
    ''

    >>> tree = ET.XML("text")
    >>> ET.tostring(tree, "utf-8")
    'text'

    >>> tree = ET.Element(u"t\u00e4g")
    >>> ET.tostring(tree, "utf-8")
    ''

    >>> tree = ET.Element("tag")
    >>> tree.set(u"\u00e4ttr", u"v\u00e4lue")
    >>> ET.tostring(tree, "utf-8")
    ''

    """

def bug_xmltoolkit54():
    """

    problems handling internally defined entities

    >>> e = ET.XML("]>&ldots;")
    >>> serialize(e)
    '舰'

    """

def bug_xmltoolkit55():
    """

    make sure we're reporting the first error, not the last

    >>> e = ET.XML("&ldots;&ndots;&rdots;")
    Traceback (most recent call last):
    ParseError: undefined entity &ldots;: line 1, column 36

    """

class ExceptionFile:
    def read(self, x):
        raise IOError

def xmltoolkit60():
    """

    Handle crash in stream source.
    >>> tree = ET.parse(ExceptionFile())
    Traceback (most recent call last):
    IOError

    """

XMLTOOLKIT62_DOC = """



A new cultivar of Begonia plant named ‘BCT9801BEG’.

"""


def xmltoolkit62():
    """

    Don't crash when using custom entities.

    >>> xmltoolkit62()
    u'A new cultivar of Begonia plant named \u2018BCT9801BEG\u2019.'

    """
    ENTITIES = {u'rsquo': u'\u2019', u'lsquo': u'\u2018'}
    parser = ET.XMLTreeBuilder()
    parser.entity.update(ENTITIES)
    parser.feed(XMLTOOLKIT62_DOC)
    t = parser.close()
    return t.find('.//paragraph').text

def xmltoolkit63():
    """

    Check reference leak.
    >>> xmltoolkit63()
    >>> count = sys.getrefcount(None)
    >>> for i in range(1000):
    ...     xmltoolkit63()
    >>> sys.getrefcount(None) - count
    0

    """
    tree = ET.TreeBuilder()
    tree.start("tag", {})
    tree.data("text")
    tree.end("tag")

# --------------------------------------------------------------------


def bug_200708_newline():
    r"""

    Preserve newlines in attributes.

    >>> e = ET.Element('SomeTag', text="def _f():\n  return 3\n")
    >>> ET.tostring(e)
    ''
    >>> ET.XML(ET.tostring(e)).get("text")
    'def _f():\n  return 3\n'
    >>> ET.tostring(ET.XML(ET.tostring(e)))
    ''

    """

def bug_200708_close():
    """

    Test default builder.
    >>> parser = ET.XMLParser() # default
    >>> parser.feed("some text")
    >>> summarize(parser.close())
    'element'

    Test custom builder.
    >>> class EchoTarget:
    ...     def close(self):
    ...         return ET.Element("element") # simulate root
    >>> parser = ET.XMLParser(EchoTarget())
    >>> parser.feed("some text")
    >>> summarize(parser.close())
    'element'

    """

def bug_200709_default_namespace():
    """

    >>> e = ET.Element("{default}elem")
    >>> s = ET.SubElement(e, "{default}elem")
    >>> serialize(e, default_namespace="default") # 1
    ''

    >>> e = ET.Element("{default}elem")
    >>> s = ET.SubElement(e, "{default}elem")
    >>> s = ET.SubElement(e, "{not-default}elem")
    >>> serialize(e, default_namespace="default") # 2
    ''

    >>> e = ET.Element("{default}elem")
    >>> s = ET.SubElement(e, "{default}elem")
    >>> s = ET.SubElement(e, "elem") # unprefixed name
    >>> serialize(e, default_namespace="default") # 3
    Traceback (most recent call last):
    ValueError: cannot use non-qualified names with default_namespace option

    """

def bug_200709_register_namespace():
    """

    >>> ET.tostring(ET.Element("{http://namespace.invalid/does/not/exist/}title"))
    ''
    >>> ET.register_namespace("foo", "http://namespace.invalid/does/not/exist/")
    >>> ET.tostring(ET.Element("{http://namespace.invalid/does/not/exist/}title"))
    ''

    And the Dublin Core namespace is in the default list:

    >>> ET.tostring(ET.Element("{http://purl.org/dc/elements/1.1/}title"))
    ''

    """

def bug_200709_element_comment():
    """

    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'))
    >>> a[0].tag == ET.Comment
    True

    >>> a = ET.Element('a')
    >>> a.append(ET.PI('foo'))
    >>> a[0].tag == ET.PI
    True

    """

def bug_200709_element_insert():
    """

    >>> a = ET.Element('a')
    >>> b = ET.SubElement(a, 'b')
    >>> c = ET.SubElement(a, 'c')
    >>> d = ET.Element('d')
    >>> a.insert(0, d)
    >>> summarize_list(a)
    ['d', 'b', 'c']
    >>> a.insert(-1, d)
    >>> summarize_list(a)
    ['d', 'b', 'd', 'c']

    """

def bug_200709_iter_comment():
    """

    >>> a = ET.Element('a')
    >>> b = ET.SubElement(a, 'b')
    >>> comment_b = ET.Comment("TEST-b")
    >>> b.append(comment_b)
    >>> summarize_list(a.iter(ET.Comment))
    ['']

    """

def bug_18347():
    """

    >>> e = ET.XML('text')
    >>> serialize(e)
    'text'
    >>> serialize(e, method="html")
    'text'
    """

# --------------------------------------------------------------------
# reported on bugs.python.org

def bug_1534630():
    """

    >>> bob = ET.TreeBuilder()
    >>> e = bob.data("data")
    >>> e = bob.start("tag", {})
    >>> e = bob.end("tag")
    >>> e = bob.close()
    >>> serialize(e)
    ''

    """

def check_issue6233():
    """

    >>> e = ET.XML("t\\xc3\\xa3g")
    >>> ET.tostring(e, 'ascii')
    "\\ntãg"
    >>> e = ET.XML("t\\xe3g")
    >>> ET.tostring(e, 'ascii')
    "\\ntãg"

    """

def check_issue3151():
    """

    >>> e = ET.XML('')
    >>> e.tag
    '{${stuff}}localname'
    >>> t = ET.ElementTree(e)
    >>> ET.tostring(e)
    ''

    """

def check_issue6565():
    """

    >>> elem = ET.XML("")
    >>> summarize_list(elem)
    ['tag']
    >>> newelem = ET.XML(SAMPLE_XML)
    >>> elem[:] = newelem[:]
    >>> summarize_list(elem)
    ['tag', 'tag', 'section']

    """

def check_html_empty_elems_serialization(self):
    # issue 15970
    # from http://www.w3.org/TR/html401/index/elements.html
    """

    >>> empty_elems = ['AREA', 'BASE', 'BASEFONT', 'BR', 'COL', 'FRAME', 'HR',
    ...                'IMG', 'INPUT', 'ISINDEX', 'LINK', 'META', 'PARAM']
    >>> elems = ''.join('<%s />' % elem for elem in empty_elems)
    >>> serialize(ET.XML('%s' % elems), method='html')
    '
'
    >>> serialize(ET.XML('%s' % elems.lower()), method='html')
    '
'
    >>> elems = ''.join('<%s>' % (elem, elem) for elem in empty_elems)
    >>> serialize(ET.XML('%s' % elems), method='html')
    '
'
    >>> serialize(ET.XML('%s' % elems.lower()), method='html')
    '
'

    """

# --------------------------------------------------------------------


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),
            # XMLParser.doctype() is deprecated.
            ("This method of XMLParser is deprecated.  Define doctype.. "
             "method on the TreeBuilder target.", DeprecationWarning))
        self.checkwarnings = test_support.check_warnings(*deprecations,
                                                         quiet=quiet)

    def __enter__(self):
        from xml.etree import ElementTree
        self._nsmap = ElementTree._namespace_map
        self._path_cache = ElementTree.ElementPath._cache
        # Copy the default namespace mapping
        ElementTree._namespace_map = self._nsmap.copy()
        # Copy the path cache (should be empty)
        ElementTree.ElementPath._cache = self._path_cache.copy()
        self.checkwarnings.__enter__()

    def __exit__(self, *args):
        from xml.etree import ElementTree
        # Restore mapping and path cache
        ElementTree._namespace_map = self._nsmap
        ElementTree.ElementPath._cache = self._path_cache
        self.checkwarnings.__exit__(*args)


def test_main(module_name='xml.etree.ElementTree'):
    from test import test_xml_etree

    use_py_module = (module_name == 'xml.etree.ElementTree')

    # The same doctests are used for both the Python and the C implementations
    assert test_xml_etree.ET.__name__ == module_name

    # XXX the C module should give the same warnings as the Python module
    with CleanContext(quiet=not use_py_module):
        test_support.run_doctest(test_xml_etree, verbosity=True)

    # The module should not be changed by the tests
    assert test_xml_etree.ET.__name__ == module_name

if __name__ == '__main__':
    test_main()