<html><head><meta name="color-scheme" content="light dark"></head><body><pre style="word-wrap: break-word; white-space: pre-wrap;">"""Tests for HTMLParser.py."""

import html.parser
import pprint
import unittest


class EventCollector(html.parser.HTMLParser):

    def __init__(self, *args, **kw):
        self.events = []
        self.append = self.events.append
        html.parser.HTMLParser.__init__(self, *args, **kw)

    def get_events(self):
        # Normalize the list of events so that buffer artefacts don't
        # separate runs of contiguous characters.
        L = []
        prevtype = None
        for event in self.events:
            type = event[0]
            if type == prevtype == "data":
                L[-1] = ("data", L[-1][1] + event[1])
            else:
                L.append(event)
            prevtype = type
        self.events = L
        return L

    # structure markup

    def handle_starttag(self, tag, attrs):
        self.append(("starttag", tag, attrs))

    def handle_startendtag(self, tag, attrs):
        self.append(("startendtag", tag, attrs))

    def handle_endtag(self, tag):
        self.append(("endtag", tag))

    # all other markup

    def handle_comment(self, data):
        self.append(("comment", data))

    def handle_charref(self, data):
        self.append(("charref", data))

    def handle_data(self, data):
        self.append(("data", data))

    def handle_decl(self, data):
        self.append(("decl", data))

    def handle_entityref(self, data):
        self.append(("entityref", data))

    def handle_pi(self, data):
        self.append(("pi", data))

    def unknown_decl(self, decl):
        self.append(("unknown decl", decl))


class EventCollectorExtra(EventCollector):

    def handle_starttag(self, tag, attrs):
        EventCollector.handle_starttag(self, tag, attrs)
        self.append(("starttag_text", self.get_starttag_text()))


class EventCollectorCharrefs(EventCollector):

    def handle_charref(self, data):
        self.fail('This should never be called with convert_charrefs=True')

    def handle_entityref(self, data):
        self.fail('This should never be called with convert_charrefs=True')


class TestCaseBase(unittest.TestCase):

    def get_collector(self):
        return EventCollector(convert_charrefs=False)

    def _run_check(self, source, expected_events, collector=None):
        if collector is None:
            collector = self.get_collector()
        parser = collector
        for s in source:
            parser.feed(s)
        parser.close()
        events = parser.get_events()
        if events != expected_events:
            self.fail("received events did not match expected events" +
                      "\nSource:\n" + repr(source) +
                      "\nExpected:\n" + pprint.pformat(expected_events) +
                      "\nReceived:\n" + pprint.pformat(events))

    def _run_check_extra(self, source, events):
        self._run_check(source, events,
                        EventCollectorExtra(convert_charrefs=False))


class HTMLParserTestCase(TestCaseBase):

    def test_processing_instruction_only(self):
        self._run_check("&lt;?processing instruction&gt;", [
            ("pi", "processing instruction"),
            ])
        self._run_check("&lt;?processing instruction ?&gt;", [
            ("pi", "processing instruction ?"),
            ])

    def test_simple_html(self):
        self._run_check("""
&lt;!DOCTYPE html PUBLIC 'foo'&gt;
&lt;HTML&gt;&amp;entity;&amp;#32;
&lt;!--comment1a
-&gt;&lt;/foo&gt;&lt;bar&gt;&amp;lt;&lt;?pi?&gt;&lt;/foo&lt;bar
comment1b--&gt;
&lt;Img sRc='Bar' isMAP&gt;sample
text
&amp;#x201C;
&lt;!--comment2a-- --comment2b--&gt;
&lt;/Html&gt;
""", [
    ("data", "\n"),
    ("decl", "DOCTYPE html PUBLIC 'foo'"),
    ("data", "\n"),
    ("starttag", "html", []),
    ("entityref", "entity"),
    ("charref", "32"),
    ("data", "\n"),
    ("comment", "comment1a\n-&gt;&lt;/foo&gt;&lt;bar&gt;&amp;lt;&lt;?pi?&gt;&lt;/foo&lt;bar\ncomment1b"),
    ("data", "\n"),
    ("starttag", "img", [("src", "Bar"), ("ismap", None)]),
    ("data", "sample\ntext\n"),
    ("charref", "x201C"),
    ("data", "\n"),
    ("comment", "comment2a-- --comment2b"),
    ("data", "\n"),
    ("endtag", "html"),
    ("data", "\n"),
    ])

    def test_malformatted_charref(self):
        self._run_check("&lt;p&gt;&amp;#bad;&lt;/p&gt;", [
            ("starttag", "p", []),
            ("data", "&amp;#bad;"),
            ("endtag", "p"),
        ])
        # add the [] as a workaround to avoid buffering (see #20288)
        self._run_check(["&lt;div&gt;&amp;#bad;&lt;/div&gt;"], [
            ("starttag", "div", []),
            ("data", "&amp;#bad;"),
            ("endtag", "div"),
        ])

    def test_unclosed_entityref(self):
        self._run_check("&amp;entityref foo", [
            ("entityref", "entityref"),
            ("data", " foo"),
            ])

    def test_bad_nesting(self):
        # Strangely, this *is* supposed to test that overlapping
        # elements are allowed.  HTMLParser is more geared toward
        # lexing the input that parsing the structure.
        self._run_check("&lt;a&gt;&lt;b&gt;&lt;/a&gt;&lt;/b&gt;", [
            ("starttag", "a", []),
            ("starttag", "b", []),
            ("endtag", "a"),
            ("endtag", "b"),
            ])

    def test_bare_ampersands(self):
        self._run_check("this text &amp; contains &amp; ampersands &amp;", [
            ("data", "this text &amp; contains &amp; ampersands &amp;"),
            ])

    def test_bare_pointy_brackets(self):
        self._run_check("this &lt; text &gt; contains &lt; bare&gt;pointy&lt; brackets", [
            ("data", "this &lt; text &gt; contains &lt; bare&gt;pointy&lt; brackets"),
            ])

    def test_starttag_end_boundary(self):
        self._run_check("""&lt;a b='&lt;'&gt;""", [("starttag", "a", [("b", "&lt;")])])
        self._run_check("""&lt;a b='&gt;'&gt;""", [("starttag", "a", [("b", "&gt;")])])

    def test_buffer_artefacts(self):
        output = [("starttag", "a", [("b", "&lt;")])]
        self._run_check(["&lt;a b='&lt;'&gt;"], output)
        self._run_check(["&lt;a ", "b='&lt;'&gt;"], output)
        self._run_check(["&lt;a b", "='&lt;'&gt;"], output)
        self._run_check(["&lt;a b=", "'&lt;'&gt;"], output)
        self._run_check(["&lt;a b='&lt;", "'&gt;"], output)
        self._run_check(["&lt;a b='&lt;'", "&gt;"], output)

        output = [("starttag", "a", [("b", "&gt;")])]
        self._run_check(["&lt;a b='&gt;'&gt;"], output)
        self._run_check(["&lt;a ", "b='&gt;'&gt;"], output)
        self._run_check(["&lt;a b", "='&gt;'&gt;"], output)
        self._run_check(["&lt;a b=", "'&gt;'&gt;"], output)
        self._run_check(["&lt;a b='&gt;", "'&gt;"], output)
        self._run_check(["&lt;a b='&gt;'", "&gt;"], output)

        output = [("comment", "abc")]
        self._run_check(["", "&lt;!--abc--&gt;"], output)
        self._run_check(["&lt;", "!--abc--&gt;"], output)
        self._run_check(["&lt;!", "--abc--&gt;"], output)
        self._run_check(["&lt;!-", "-abc--&gt;"], output)
        self._run_check(["&lt;!--", "abc--&gt;"], output)
        self._run_check(["&lt;!--a", "bc--&gt;"], output)
        self._run_check(["&lt;!--ab", "c--&gt;"], output)
        self._run_check(["&lt;!--abc", "--&gt;"], output)
        self._run_check(["&lt;!--abc-", "-&gt;"], output)
        self._run_check(["&lt;!--abc--", "&gt;"], output)
        self._run_check(["&lt;!--abc--&gt;", ""], output)

    def test_valid_doctypes(self):
        # from http://www.w3.org/QA/2002/04/valid-dtd-list.html
        dtds = ['HTML',  # HTML5 doctype
                ('HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" '
                 '"http://www.w3.org/TR/html4/strict.dtd"'),
                ('HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" '
                 '"http://www.w3.org/TR/html4/loose.dtd"'),
                ('html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" '
                 '"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"'),
                ('html PUBLIC "-//W3C//DTD XHTML 1.0 Frameset//EN" '
                 '"http://www.w3.org/TR/xhtml1/DTD/xhtml1-frameset.dtd"'),
                ('math PUBLIC "-//W3C//DTD MathML 2.0//EN" '
                 '"http://www.w3.org/Math/DTD/mathml2/mathml2.dtd"'),
                ('html PUBLIC "-//W3C//DTD '
                 'XHTML 1.1 plus MathML 2.0 plus SVG 1.1//EN" '
                 '"http://www.w3.org/2002/04/xhtml-math-svg/xhtml-math-svg.dtd"'),
                ('svg PUBLIC "-//W3C//DTD SVG 1.1//EN" '
                 '"http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd"'),
                'html PUBLIC "-//IETF//DTD HTML 2.0//EN"',
                'html PUBLIC "-//W3C//DTD HTML 3.2 Final//EN"']
        for dtd in dtds:
            self._run_check("&lt;!DOCTYPE %s&gt;" % dtd,
                            [('decl', 'DOCTYPE ' + dtd)])

    def test_startendtag(self):
        self._run_check("&lt;p/&gt;", [
            ("startendtag", "p", []),
            ])
        self._run_check("&lt;p&gt;&lt;/p&gt;", [
            ("starttag", "p", []),
            ("endtag", "p"),
            ])
        self._run_check("&lt;p&gt;&lt;img src='foo' /&gt;&lt;/p&gt;", [
            ("starttag", "p", []),
            ("startendtag", "img", [("src", "foo")]),
            ("endtag", "p"),
            ])

    def test_get_starttag_text(self):
        s = """&lt;foo:bar   \n   one="1"\ttwo=2   &gt;"""
        self._run_check_extra(s, [
            ("starttag", "foo:bar", [("one", "1"), ("two", "2")]),
            ("starttag_text", s)])

    def test_cdata_content(self):
        contents = [
            '&lt;!-- not a comment --&gt; &amp;not-an-entity-ref;',
            "&lt;not a='start tag'&gt;",
            '&lt;a href="" /&gt; &lt;p&gt; &lt;span&gt;&lt;/span&gt;',
            'foo = "&lt;/scr" + "ipt&gt;";',
            'foo = "&lt;/SCRIPT" + "&gt;";',
            'foo = &lt;\n/script&gt; ',
            '&lt;!-- document.write("&lt;/scr" + "ipt&gt;"); --&gt;',
            ('\n//&lt;![CDATA[\n'
             'document.write(\'&lt;s\'+\'cript type="text/javascript" '
             'src="http://www.example.org/r=\'+new '
             'Date().getTime()+\'"&gt;&lt;\\/s\'+\'cript&gt;\');\n//]]&gt;'),
            '\n&lt;!-- //\nvar foo = 3.14;\n// --&gt;\n',
            'foo = "&lt;/sty" + "le&gt;";',
            '&lt;!-- \u2603 --&gt;',
            # these two should be invalid according to the HTML 5 spec,
            # section 8.1.2.2
            #'foo = &lt;/\nscript&gt;',
            #'foo = &lt;/ script&gt;',
        ]
        elements = ['script', 'style', 'SCRIPT', 'STYLE', 'Script', 'Style']
        for content in contents:
            for element in elements:
                element_lower = element.lower()
                s = '&lt;{element}&gt;{content}&lt;/{element}&gt;'.format(element=element,
                                                               content=content)
                self._run_check(s, [("starttag", element_lower, []),
                                    ("data", content),
                                    ("endtag", element_lower)])

    def test_cdata_with_closing_tags(self):
        # see issue #13358
        # make sure that HTMLParser calls handle_data only once for each CDATA.
        # The normal event collector normalizes  the events in get_events,
        # so we override it to return the original list of events.
        class Collector(EventCollector):
            def get_events(self):
                return self.events

        content = """&lt;!-- not a comment --&gt; &amp;not-an-entity-ref;
                  &lt;a href="" /&gt; &lt;/p&gt;&lt;p&gt; &lt;span&gt;&lt;/span&gt;&lt;/style&gt;
                  '&lt;/script' + '&gt;'"""
        for element in [' script', 'script ', ' script ',
                        '\nscript', 'script\n', '\nscript\n']:
            element_lower = element.lower().strip()
            s = '&lt;script&gt;{content}&lt;/{element}&gt;'.format(element=element,
                                                       content=content)
            self._run_check(s, [("starttag", element_lower, []),
                                ("data", content),
                                ("endtag", element_lower)],
                            collector=Collector(convert_charrefs=False))

    def test_comments(self):
        html = ("&lt;!-- I'm a valid comment --&gt;"
                '&lt;!--me too!--&gt;'
                '&lt;!------&gt;'
                '&lt;!----&gt;'
                '&lt;!----I have many hyphens----&gt;'
                '&lt;!-- I have a &gt; in the middle --&gt;'
                '&lt;!-- and I have -- in the middle! --&gt;')
        expected = [('comment', " I'm a valid comment "),
                    ('comment', 'me too!'),
                    ('comment', '--'),
                    ('comment', ''),
                    ('comment', '--I have many hyphens--'),
                    ('comment', ' I have a &gt; in the middle '),
                    ('comment', ' and I have -- in the middle! ')]
        self._run_check(html, expected)

    def test_condcoms(self):
        html = ('&lt;!--[if IE &amp; !(lte IE 8)]&gt;aren\'t&lt;![endif]--&gt;'
                '&lt;!--[if IE 8]&gt;condcoms&lt;![endif]--&gt;'
                '&lt;!--[if lte IE 7]&gt;pretty?&lt;![endif]--&gt;')
        expected = [('comment', "[if IE &amp; !(lte IE 8)]&gt;aren't&lt;![endif]"),
                    ('comment', '[if IE 8]&gt;condcoms&lt;![endif]'),
                    ('comment', '[if lte IE 7]&gt;pretty?&lt;![endif]')]
        self._run_check(html, expected)

    def test_convert_charrefs(self):
        # default value for convert_charrefs is now True
        collector = lambda: EventCollectorCharrefs()
        self.assertTrue(collector().convert_charrefs)
        charrefs = ['&amp;quot;', '&amp;#34;', '&amp;#x22;', '&amp;quot', '&amp;#34', '&amp;#x22']
        # check charrefs in the middle of the text/attributes
        expected = [('starttag', 'a', [('href', 'foo"zar')]),
                    ('data', 'a"z'), ('endtag', 'a')]
        for charref in charrefs:
            self._run_check('&lt;a href="foo{0}zar"&gt;a{0}z&lt;/a&gt;'.format(charref),
                            expected, collector=collector())
        # check charrefs at the beginning/end of the text/attributes
        expected = [('data', '"'),
                    ('starttag', 'a', [('x', '"'), ('y', '"X'), ('z', 'X"')]),
                    ('data', '"'), ('endtag', 'a'), ('data', '"')]
        for charref in charrefs:
            self._run_check('{0}&lt;a x="{0}" y="{0}X" z="X{0}"&gt;'
                            '{0}&lt;/a&gt;{0}'.format(charref),
                            expected, collector=collector())
        # check charrefs in &lt;script&gt;/&lt;style&gt; elements
        for charref in charrefs:
            text = 'X'.join([charref]*3)
            expected = [('data', '"'),
                        ('starttag', 'script', []), ('data', text),
                        ('endtag', 'script'), ('data', '"'),
                        ('starttag', 'style', []), ('data', text),
                        ('endtag', 'style'), ('data', '"')]
            self._run_check('{1}&lt;script&gt;{0}&lt;/script&gt;{1}'
                            '&lt;style&gt;{0}&lt;/style&gt;{1}'.format(text, charref),
                            expected, collector=collector())
        # check truncated charrefs at the end of the file
        html = '&amp;quo &amp;# &amp;#x'
        for x in range(1, len(html)):
            self._run_check(html[:x], [('data', html[:x])],
                            collector=collector())
        # check a string with no charrefs
        self._run_check('no charrefs here', [('data', 'no charrefs here')],
                        collector=collector())

    # the remaining tests were for the "tolerant" parser (which is now
    # the default), and check various kind of broken markup
    def test_tolerant_parsing(self):
        self._run_check('&lt;html &lt;html&gt;te&gt;&gt;xt&amp;a&lt;&lt;bc&lt;/a&gt;&lt;/html&gt;\n'
                        '&lt;img src="URL&gt;&lt;//img&gt;&lt;/html&lt;/html&gt;', [
                            ('starttag', 'html', [('&lt;html', None)]),
                            ('data', 'te&gt;&gt;xt'),
                            ('entityref', 'a'),
                            ('data', '&lt;'),
                            ('starttag', 'bc&lt;', [('a', None)]),
                            ('endtag', 'html'),
                            ('data', '\n&lt;img src="URL&gt;'),
                            ('comment', '/img'),
                            ('endtag', 'html&lt;')])

    def test_starttag_junk_chars(self):
        self._run_check("&lt;/&gt;", [])
        self._run_check("&lt;/$&gt;", [('comment', '$')])
        self._run_check("&lt;/", [('data', '&lt;/')])
        self._run_check("&lt;/a", [('data', '&lt;/a')])
        self._run_check("&lt;a&lt;a&gt;", [('starttag', 'a&lt;a', [])])
        self._run_check("&lt;/a&lt;a&gt;", [('endtag', 'a&lt;a')])
        self._run_check("&lt;!", [('data', '&lt;!')])
        self._run_check("&lt;a", [('data', '&lt;a')])
        self._run_check("&lt;a foo='bar'", [('data', "&lt;a foo='bar'")])
        self._run_check("&lt;a foo='bar", [('data', "&lt;a foo='bar")])
        self._run_check("&lt;a foo='&gt;'", [('data', "&lt;a foo='&gt;'")])
        self._run_check("&lt;a foo='&gt;", [('data', "&lt;a foo='&gt;")])
        self._run_check("&lt;a$&gt;", [('starttag', 'a$', [])])
        self._run_check("&lt;a$b&gt;", [('starttag', 'a$b', [])])
        self._run_check("&lt;a$b/&gt;", [('startendtag', 'a$b', [])])
        self._run_check("&lt;a$b  &gt;", [('starttag', 'a$b', [])])
        self._run_check("&lt;a$b  /&gt;", [('startendtag', 'a$b', [])])

    def test_slashes_in_starttag(self):
        self._run_check('&lt;a foo="var"/&gt;', [('startendtag', 'a', [('foo', 'var')])])
        html = ('&lt;img width=902 height=250px '
                'src="/sites/default/files/images/homepage/foo.jpg" '
                '/*what am I doing here*/ /&gt;')
        expected = [(
            'startendtag', 'img',
            [('width', '902'), ('height', '250px'),
             ('src', '/sites/default/files/images/homepage/foo.jpg'),
             ('*what', None), ('am', None), ('i', None),
             ('doing', None), ('here*', None)]
        )]
        self._run_check(html, expected)
        html = ('&lt;a / /foo/ / /=/ / /bar/ / /&gt;'
                '&lt;a / /foo/ / /=/ / /bar/ / &gt;')
        expected = [
            ('startendtag', 'a', [('foo', None), ('=', None), ('bar', None)]),
            ('starttag', 'a', [('foo', None), ('=', None), ('bar', None)])
        ]
        self._run_check(html, expected)
        #see issue #14538
        html = ('&lt;meta&gt;&lt;meta / &gt;&lt;meta // &gt;&lt;meta / / &gt;'
                '&lt;meta/&gt;&lt;meta /&gt;&lt;meta //&gt;&lt;meta//&gt;')
        expected = [
            ('starttag', 'meta', []), ('starttag', 'meta', []),
            ('starttag', 'meta', []), ('starttag', 'meta', []),
            ('startendtag', 'meta', []), ('startendtag', 'meta', []),
            ('startendtag', 'meta', []), ('startendtag', 'meta', []),
        ]
        self._run_check(html, expected)

    def test_declaration_junk_chars(self):
        self._run_check("&lt;!DOCTYPE foo $ &gt;", [('decl', 'DOCTYPE foo $ ')])

    def test_illegal_declarations(self):
        self._run_check('&lt;!spacer type="block" height="25"&gt;',
                        [('comment', 'spacer type="block" height="25"')])

    def test_with_unquoted_attributes(self):
        # see #12008
        html = ("&lt;html&gt;&lt;body bgcolor=d0ca90 text='181008'&gt;"
                "&lt;table cellspacing=0 cellpadding=1 width=100% &gt;&lt;tr&gt;"
                "&lt;td align=left&gt;&lt;font size=-1&gt;"
                "- &lt;a href=/rabota/&gt;&lt;span class=en&gt; software-and-i&lt;/span&gt;&lt;/a&gt;"
                "- &lt;a href='/1/'&gt;&lt;span class=en&gt; library&lt;/span&gt;&lt;/a&gt;&lt;/table&gt;")
        expected = [
            ('starttag', 'html', []),
            ('starttag', 'body', [('bgcolor', 'd0ca90'), ('text', '181008')]),
            ('starttag', 'table',
                [('cellspacing', '0'), ('cellpadding', '1'), ('width', '100%')]),
            ('starttag', 'tr', []),
            ('starttag', 'td', [('align', 'left')]),
            ('starttag', 'font', [('size', '-1')]),
            ('data', '- '), ('starttag', 'a', [('href', '/rabota/')]),
            ('starttag', 'span', [('class', 'en')]), ('data', ' software-and-i'),
            ('endtag', 'span'), ('endtag', 'a'),
            ('data', '- '), ('starttag', 'a', [('href', '/1/')]),
            ('starttag', 'span', [('class', 'en')]), ('data', ' library'),
            ('endtag', 'span'), ('endtag', 'a'), ('endtag', 'table')
        ]
        self._run_check(html, expected)

    def test_comma_between_attributes(self):
        self._run_check('&lt;form action="/xxx.php?a=1&amp;amp;b=2&amp;amp", '
                        'method="post"&gt;', [
                            ('starttag', 'form',
                                [('action', '/xxx.php?a=1&amp;b=2&amp;'),
                                 (',', None), ('method', 'post')])])

    def test_weird_chars_in_unquoted_attribute_values(self):
        self._run_check('&lt;form action=bogus|&amp;#()value&gt;', [
                            ('starttag', 'form',
                                [('action', 'bogus|&amp;#()value')])])

    def test_invalid_end_tags(self):
        # A collection of broken end tags. &lt;br&gt; is used as separator.
        # see http://www.w3.org/TR/html5/tokenization.html#end-tag-open-state
        # and #13993
        html = ('&lt;br&gt;&lt;/label&lt;/p&gt;&lt;br&gt;&lt;/div end tmAd-leaderBoard&gt;&lt;br&gt;&lt;/&lt;h4&gt;&lt;br&gt;'
                '&lt;/li class="unit"&gt;&lt;br&gt;&lt;/li\r\n\t\t\t\t\t\t&lt;/ul&gt;&lt;br&gt;&lt;/&gt;&lt;br&gt;')
        expected = [('starttag', 'br', []),
                    # &lt; is part of the name, / is discarded, p is an attribute
                    ('endtag', 'label&lt;'),
                    ('starttag', 'br', []),
                    # text and attributes are discarded
                    ('endtag', 'div'),
                    ('starttag', 'br', []),
                    # comment because the first char after &lt;/ is not a-zA-Z
                    ('comment', '&lt;h4'),
                    ('starttag', 'br', []),
                    # attributes are discarded
                    ('endtag', 'li'),
                    ('starttag', 'br', []),
                    # everything till ul (included) is discarded
                    ('endtag', 'li'),
                    ('starttag', 'br', []),
                    # &lt;/&gt; is ignored
                    ('starttag', 'br', [])]
        self._run_check(html, expected)

    def test_broken_invalid_end_tag(self):
        # This is technically wrong (the "&gt; shouldn't be included in the 'data')
        # but is probably not worth fixing it (in addition to all the cases of
        # the previous test, it would require a full attribute parsing).
        # see #13993
        html = '&lt;b&gt;This&lt;/b attr="&gt;"&gt; confuses the parser'
        expected = [('starttag', 'b', []),
                    ('data', 'This'),
                    ('endtag', 'b'),
                    ('data', '"&gt; confuses the parser')]
        self._run_check(html, expected)

    def test_correct_detection_of_start_tags(self):
        # see #13273
        html = ('&lt;div style=""    &gt;&lt;b&gt;The &lt;a href="some_url"&gt;rain&lt;/a&gt; '
                '&lt;br /&gt; in &lt;span&gt;Spain&lt;/span&gt;&lt;/b&gt;&lt;/div&gt;')
        expected = [
            ('starttag', 'div', [('style', '')]),
            ('starttag', 'b', []),
            ('data', 'The '),
            ('starttag', 'a', [('href', 'some_url')]),
            ('data', 'rain'),
            ('endtag', 'a'),
            ('data', ' '),
            ('startendtag', 'br', []),
            ('data', ' in '),
            ('starttag', 'span', []),
            ('data', 'Spain'),
            ('endtag', 'span'),
            ('endtag', 'b'),
            ('endtag', 'div')
        ]
        self._run_check(html, expected)

        html = '&lt;div style="", foo = "bar" &gt;&lt;b&gt;The &lt;a href="some_url"&gt;rain&lt;/a&gt;'
        expected = [
            ('starttag', 'div', [('style', ''), (',', None), ('foo', 'bar')]),
            ('starttag', 'b', []),
            ('data', 'The '),
            ('starttag', 'a', [('href', 'some_url')]),
            ('data', 'rain'),
            ('endtag', 'a'),
        ]
        self._run_check(html, expected)

    def test_EOF_in_charref(self):
        # see #17802
        # This test checks that the UnboundLocalError reported in the issue
        # is not raised, however I'm not sure the returned values are correct.
        # Maybe HTMLParser should use self.unescape for these
        data = [
            ('a&amp;', [('data', 'a&amp;')]),
            ('a&amp;b', [('data', 'ab')]),
            ('a&amp;b ', [('data', 'a'), ('entityref', 'b'), ('data', ' ')]),
            ('a&amp;b;', [('data', 'a'), ('entityref', 'b')]),
        ]
        for html, expected in data:
            self._run_check(html, expected)

    def test_unescape_method(self):
        from html import unescape
        p = self.get_collector()
        with self.assertWarns(DeprecationWarning):
            s = '&amp;quot;&amp;#34;&amp;#x22;&amp;quot&amp;#34&amp;#x22&amp;#bad;'
            self.assertEqual(p.unescape(s), unescape(s))

    def test_broken_comments(self):
        html = ('&lt;! not really a comment &gt;'
                '&lt;! not a comment either --&gt;'
                '&lt;! -- close enough --&gt;'
                '&lt;!&gt;&lt;!&lt;-- this was an empty comment&gt;'
                '&lt;!!! another bogus comment !!!&gt;')
        expected = [
            ('comment', ' not really a comment '),
            ('comment', ' not a comment either --'),
            ('comment', ' -- close enough --'),
            ('comment', ''),
            ('comment', '&lt;-- this was an empty comment'),
            ('comment', '!! another bogus comment !!!'),
        ]
        self._run_check(html, expected)

    def test_broken_condcoms(self):
        # these condcoms are missing the '--' after '&lt;!' and before the '&gt;'
        html = ('&lt;![if !(IE)]&gt;broken condcom&lt;![endif]&gt;'
                '&lt;![if ! IE]&gt;&lt;link href="favicon.tiff"/&gt;&lt;![endif]&gt;'
                '&lt;![if !IE 6]&gt;&lt;img src="firefox.png" /&gt;&lt;![endif]&gt;'
                '&lt;![if !ie 6]&gt;&lt;b&gt;foo&lt;/b&gt;&lt;![endif]&gt;'
                '&lt;![if (!IE)|(lt IE 9)]&gt;&lt;img src="mammoth.bmp" /&gt;&lt;![endif]&gt;')
        # According to the HTML5 specs sections "8.2.4.44 Bogus comment state"
        # and "8.2.4.45 Markup declaration open state", comment tokens should
        # be emitted instead of 'unknown decl', but calling unknown_decl
        # provides more flexibility.
        # See also Lib/_markupbase.py:parse_declaration
        expected = [
            ('unknown decl', 'if !(IE)'),
            ('data', 'broken condcom'),
            ('unknown decl', 'endif'),
            ('unknown decl', 'if ! IE'),
            ('startendtag', 'link', [('href', 'favicon.tiff')]),
            ('unknown decl', 'endif'),
            ('unknown decl', 'if !IE 6'),
            ('startendtag', 'img', [('src', 'firefox.png')]),
            ('unknown decl', 'endif'),
            ('unknown decl', 'if !ie 6'),
            ('starttag', 'b', []),
            ('data', 'foo'),
            ('endtag', 'b'),
            ('unknown decl', 'endif'),
            ('unknown decl', 'if (!IE)|(lt IE 9)'),
            ('startendtag', 'img', [('src', 'mammoth.bmp')]),
            ('unknown decl', 'endif')
        ]
        self._run_check(html, expected)

    def test_convert_charrefs_dropped_text(self):
        # #23144: make sure that all the events are triggered when
        # convert_charrefs is True, even if we don't call .close()
        parser = EventCollector(convert_charrefs=True)
        # before the fix, bar &amp; baz was missing
        parser.feed("foo &lt;a&gt;link&lt;/a&gt; bar &amp;amp; baz")
        self.assertEqual(
            parser.get_events(),
            [('data', 'foo '), ('starttag', 'a', []), ('data', 'link'),
             ('endtag', 'a'), ('data', ' bar &amp; baz')]
        )


class AttributesTestCase(TestCaseBase):

    def test_attr_syntax(self):
        output = [
          ("starttag", "a", [("b", "v"), ("c", "v"), ("d", "v"), ("e", None)])
        ]
        self._run_check("""&lt;a b='v' c="v" d=v e&gt;""", output)
        self._run_check("""&lt;a  b = 'v' c = "v" d = v e&gt;""", output)
        self._run_check("""&lt;a\nb\n=\n'v'\nc\n=\n"v"\nd\n=\nv\ne&gt;""", output)
        self._run_check("""&lt;a\tb\t=\t'v'\tc\t=\t"v"\td\t=\tv\te&gt;""", output)

    def test_attr_values(self):
        self._run_check("""&lt;a b='xxx\n\txxx' c="yyy\t\nyyy" d='\txyz\n'&gt;""",
                        [("starttag", "a", [("b", "xxx\n\txxx"),
                                            ("c", "yyy\t\nyyy"),
                                            ("d", "\txyz\n")])])
        self._run_check("""&lt;a b='' c=""&gt;""",
                        [("starttag", "a", [("b", ""), ("c", "")])])
        # Regression test for SF patch #669683.
        self._run_check("&lt;e a=rgb(1,2,3)&gt;",
                        [("starttag", "e", [("a", "rgb(1,2,3)")])])
        # Regression test for SF bug #921657.
        self._run_check(
            "&lt;a href=mailto:xyz@example.com&gt;",
            [("starttag", "a", [("href", "mailto:xyz@example.com")])])

    def test_attr_nonascii(self):
        # see issue 7311
        self._run_check(
            "&lt;img src=/foo/bar.png alt=\u4e2d\u6587&gt;",
            [("starttag", "img", [("src", "/foo/bar.png"),
                                  ("alt", "\u4e2d\u6587")])])
        self._run_check(
            "&lt;a title='\u30c6\u30b9\u30c8' href='\u30c6\u30b9\u30c8.html'&gt;",
            [("starttag", "a", [("title", "\u30c6\u30b9\u30c8"),
                                ("href", "\u30c6\u30b9\u30c8.html")])])
        self._run_check(
            '&lt;a title="\u30c6\u30b9\u30c8" href="\u30c6\u30b9\u30c8.html"&gt;',
            [("starttag", "a", [("title", "\u30c6\u30b9\u30c8"),
                                ("href", "\u30c6\u30b9\u30c8.html")])])

    def test_attr_entity_replacement(self):
        self._run_check(
            "&lt;a b='&amp;amp;&amp;gt;&amp;lt;&amp;quot;&amp;apos;'&gt;",
            [("starttag", "a", [("b", "&amp;&gt;&lt;\"'")])])

    def test_attr_funky_names(self):
        self._run_check(
            "&lt;a a.b='v' c:d=v e-f=v&gt;",
            [("starttag", "a", [("a.b", "v"), ("c:d", "v"), ("e-f", "v")])])

    def test_entityrefs_in_attributes(self):
        self._run_check(
            "&lt;html foo='&amp;euro;&amp;amp;&amp;#97;&amp;#x61;&amp;unsupported;'&gt;",
            [("starttag", "html", [("foo", "\u20AC&amp;aa&amp;unsupported;")])])


    def test_attr_funky_names2(self):
        self._run_check(
            r"&lt;a $&gt;&lt;b $=%&gt;&lt;c \=/&gt;",
            [("starttag", "a", [("$", None)]),
             ("starttag", "b", [("$", "%")]),
             ("starttag", "c", [("\\", "/")])])

    def test_entities_in_attribute_value(self):
        # see #1200313
        for entity in ['&amp;', '&amp;amp;', '&amp;#38;', '&amp;#x26;']:
            self._run_check('&lt;a href="%s"&gt;' % entity,
                            [("starttag", "a", [("href", "&amp;")])])
            self._run_check("&lt;a href='%s'&gt;" % entity,
                            [("starttag", "a", [("href", "&amp;")])])
            self._run_check("&lt;a href=%s&gt;" % entity,
                            [("starttag", "a", [("href", "&amp;")])])

    def test_malformed_attributes(self):
        # see #13357
        html = (
            "&lt;a href=test'style='color:red;bad1'&gt;test - bad1&lt;/a&gt;"
            "&lt;a href=test'+style='color:red;ba2'&gt;test - bad2&lt;/a&gt;"
            "&lt;a href=test'&amp;nbsp;style='color:red;bad3'&gt;test - bad3&lt;/a&gt;"
            "&lt;a href = test'&amp;nbsp;style='color:red;bad4'  &gt;test - bad4&lt;/a&gt;"
        )
        expected = [
            ('starttag', 'a', [('href', "test'style='color:red;bad1'")]),
            ('data', 'test - bad1'), ('endtag', 'a'),
            ('starttag', 'a', [('href', "test'+style='color:red;ba2'")]),
            ('data', 'test - bad2'), ('endtag', 'a'),
            ('starttag', 'a', [('href', "test'\xa0style='color:red;bad3'")]),
            ('data', 'test - bad3'), ('endtag', 'a'),
            ('starttag', 'a', [('href', "test'\xa0style='color:red;bad4'")]),
            ('data', 'test - bad4'), ('endtag', 'a')
        ]
        self._run_check(html, expected)

    def test_malformed_adjacent_attributes(self):
        # see #12629
        self._run_check('&lt;x&gt;&lt;y z=""o"" /&gt;&lt;/x&gt;',
                        [('starttag', 'x', []),
                            ('startendtag', 'y', [('z', ''), ('o""', None)]),
                            ('endtag', 'x')])
        self._run_check('&lt;x&gt;&lt;y z="""" /&gt;&lt;/x&gt;',
                        [('starttag', 'x', []),
                            ('startendtag', 'y', [('z', ''), ('""', None)]),
                            ('endtag', 'x')])

    # see #755670 for the following 3 tests
    def test_adjacent_attributes(self):
        self._run_check('&lt;a width="100%"cellspacing=0&gt;',
                        [("starttag", "a",
                          [("width", "100%"), ("cellspacing","0")])])

        self._run_check('&lt;a id="foo"class="bar"&gt;',
                        [("starttag", "a",
                          [("id", "foo"), ("class","bar")])])

    def test_missing_attribute_value(self):
        self._run_check('&lt;a v=&gt;',
                        [("starttag", "a", [("v", "")])])

    def test_javascript_attribute_value(self):
        self._run_check("&lt;a href=javascript:popup('/popup/help.html')&gt;",
                        [("starttag", "a",
                          [("href", "javascript:popup('/popup/help.html')")])])

    def test_end_tag_in_attribute_value(self):
        # see #1745761
        self._run_check("&lt;a href='http://www.example.org/\"&gt;;'&gt;spam&lt;/a&gt;",
                        [("starttag", "a",
                          [("href", "http://www.example.org/\"&gt;;")]),
                         ("data", "spam"), ("endtag", "a")])


if __name__ == "__main__":
    unittest.main()
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