1"""Tests for HTMLParser.py."""
2
3import HTMLParser
4import pprint
5import unittest
6from test import test_support
7
8
9class EventCollector(HTMLParser.HTMLParser):
10
11    def __init__(self):
12        self.events = []
13        self.append = self.events.append
14        HTMLParser.HTMLParser.__init__(self)
15
16    def get_events(self):
17        # Normalize the list of events so that buffer artefacts don't
18        # separate runs of contiguous characters.
19        L = []
20        prevtype = None
21        for event in self.events:
22            type = event[0]
23            if type == prevtype == "data":
24                L[-1] = ("data", L[-1][1] + event[1])
25            else:
26                L.append(event)
27            prevtype = type
28        self.events = L
29        return L
30
31    # structure markup
32
33    def handle_starttag(self, tag, attrs):
34        self.append(("starttag", tag, attrs))
35
36    def handle_startendtag(self, tag, attrs):
37        self.append(("startendtag", tag, attrs))
38
39    def handle_endtag(self, tag):
40        self.append(("endtag", tag))
41
42    # all other markup
43
44    def handle_comment(self, data):
45        self.append(("comment", data))
46
47    def handle_charref(self, data):
48        self.append(("charref", data))
49
50    def handle_data(self, data):
51        self.append(("data", data))
52
53    def handle_decl(self, data):
54        self.append(("decl", data))
55
56    def handle_entityref(self, data):
57        self.append(("entityref", data))
58
59    def handle_pi(self, data):
60        self.append(("pi", data))
61
62    def unknown_decl(self, decl):
63        self.append(("unknown decl", decl))
64
65
66class EventCollectorExtra(EventCollector):
67
68    def handle_starttag(self, tag, attrs):
69        EventCollector.handle_starttag(self, tag, attrs)
70        self.append(("starttag_text", self.get_starttag_text()))
71
72
73class TestCaseBase(unittest.TestCase):
74
75    def _run_check(self, source, expected_events, collector=EventCollector):
76        parser = collector()
77        for s in source:
78            parser.feed(s)
79        parser.close()
80        events = parser.get_events()
81        if events != expected_events:
82            self.fail("received events did not match expected events\n"
83                      "Expected:\n" + pprint.pformat(expected_events) +
84                      "\nReceived:\n" + pprint.pformat(events))
85
86    def _run_check_extra(self, source, events):
87        self._run_check(source, events, EventCollectorExtra)
88
89    def _parse_error(self, source):
90        def parse(source=source):
91            parser = HTMLParser.HTMLParser()
92            parser.feed(source)
93            parser.close()
94        self.assertRaises(HTMLParser.HTMLParseError, parse)
95
96
97class HTMLParserTestCase(TestCaseBase):
98
99    def test_processing_instruction_only(self):
100        self._run_check("<?processing instruction>", [
101            ("pi", "processing instruction"),
102            ])
103        self._run_check("<?processing instruction ?>", [
104            ("pi", "processing instruction ?"),
105            ])
106
107    def test_simple_html(self):
108        self._run_check("""
109<!DOCTYPE html PUBLIC 'foo'>
110<HTML>&entity;&#32;
111<!--comment1a
112-></foo><bar>&lt;<?pi?></foo<bar
113comment1b-->
114<Img sRc='Bar' isMAP>sample
115text
116&#x201C;
117<!--comment2a-- --comment2b-->
118</Html>
119""", [
120    ("data", "\n"),
121    ("decl", "DOCTYPE html PUBLIC 'foo'"),
122    ("data", "\n"),
123    ("starttag", "html", []),
124    ("entityref", "entity"),
125    ("charref", "32"),
126    ("data", "\n"),
127    ("comment", "comment1a\n-></foo><bar>&lt;<?pi?></foo<bar\ncomment1b"),
128    ("data", "\n"),
129    ("starttag", "img", [("src", "Bar"), ("ismap", None)]),
130    ("data", "sample\ntext\n"),
131    ("charref", "x201C"),
132    ("data", "\n"),
133    ("comment", "comment2a-- --comment2b"),
134    ("data", "\n"),
135    ("endtag", "html"),
136    ("data", "\n"),
137    ])
138
139    def test_unclosed_entityref(self):
140        self._run_check("&entityref foo", [
141            ("entityref", "entityref"),
142            ("data", " foo"),
143            ])
144
145    def test_bad_nesting(self):
146        # Strangely, this *is* supposed to test that overlapping
147        # elements are allowed.  HTMLParser is more geared toward
148        # lexing the input that parsing the structure.
149        self._run_check("<a><b></a></b>", [
150            ("starttag", "a", []),
151            ("starttag", "b", []),
152            ("endtag", "a"),
153            ("endtag", "b"),
154            ])
155
156    def test_bare_ampersands(self):
157        self._run_check("this text & contains & ampersands &", [
158            ("data", "this text & contains & ampersands &"),
159            ])
160
161    def test_bare_pointy_brackets(self):
162        self._run_check("this < text > contains < bare>pointy< brackets", [
163            ("data", "this < text > contains < bare>pointy< brackets"),
164            ])
165
166    def test_illegal_declarations(self):
167        self._run_check('<!spacer type="block" height="25">',
168                        [('comment', 'spacer type="block" height="25"')])
169
170    def test_starttag_end_boundary(self):
171        self._run_check("""<a b='<'>""", [("starttag", "a", [("b", "<")])])
172        self._run_check("""<a b='>'>""", [("starttag", "a", [("b", ">")])])
173
174    def test_buffer_artefacts(self):
175        output = [("starttag", "a", [("b", "<")])]
176        self._run_check(["<a b='<'>"], output)
177        self._run_check(["<a ", "b='<'>"], output)
178        self._run_check(["<a b", "='<'>"], output)
179        self._run_check(["<a b=", "'<'>"], output)
180        self._run_check(["<a b='<", "'>"], output)
181        self._run_check(["<a b='<'", ">"], output)
182
183        output = [("starttag", "a", [("b", ">")])]
184        self._run_check(["<a b='>'>"], output)
185        self._run_check(["<a ", "b='>'>"], output)
186        self._run_check(["<a b", "='>'>"], output)
187        self._run_check(["<a b=", "'>'>"], output)
188        self._run_check(["<a b='>", "'>"], output)
189        self._run_check(["<a b='>'", ">"], output)
190
191        output = [("comment", "abc")]
192        self._run_check(["", "<!--abc-->"], output)
193        self._run_check(["<", "!--abc-->"], output)
194        self._run_check(["<!", "--abc-->"], output)
195        self._run_check(["<!-", "-abc-->"], output)
196        self._run_check(["<!--", "abc-->"], output)
197        self._run_check(["<!--a", "bc-->"], output)
198        self._run_check(["<!--ab", "c-->"], output)
199        self._run_check(["<!--abc", "-->"], output)
200        self._run_check(["<!--abc-", "->"], output)
201        self._run_check(["<!--abc--", ">"], output)
202        self._run_check(["<!--abc-->", ""], output)
203
204    def test_starttag_junk_chars(self):
205        self._run_check("</>", [])
206        self._run_check("</$>", [('comment', '$')])
207        self._run_check("</", [('data', '</')])
208        self._run_check("</a", [('data', '</a')])
209        # XXX this might be wrong
210        self._run_check("<a<a>", [('data', '<a'), ('starttag', 'a', [])])
211        self._run_check("</a<a>", [('endtag', 'a<a')])
212        self._run_check("<!", [('data', '<!')])
213        self._run_check("<a", [('data', '<a')])
214        self._run_check("<a foo='bar'", [('data', "<a foo='bar'")])
215        self._run_check("<a foo='bar", [('data', "<a foo='bar")])
216        self._run_check("<a foo='>'", [('data', "<a foo='>'")])
217        self._run_check("<a foo='>", [('data', "<a foo='>")])
218
219    def test_valid_doctypes(self):
220        # from http://www.w3.org/QA/2002/04/valid-dtd-list.html
221        dtds = ['HTML',  # HTML5 doctype
222                ('HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" '
223                 '"http://www.w3.org/TR/html4/strict.dtd"'),
224                ('HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" '
225                 '"http://www.w3.org/TR/html4/loose.dtd"'),
226                ('html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" '
227                 '"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"'),
228                ('html PUBLIC "-//W3C//DTD XHTML 1.0 Frameset//EN" '
229                 '"http://www.w3.org/TR/xhtml1/DTD/xhtml1-frameset.dtd"'),
230                ('math PUBLIC "-//W3C//DTD MathML 2.0//EN" '
231                 '"http://www.w3.org/Math/DTD/mathml2/mathml2.dtd"'),
232                ('html PUBLIC "-//W3C//DTD '
233                 'XHTML 1.1 plus MathML 2.0 plus SVG 1.1//EN" '
234                 '"http://www.w3.org/2002/04/xhtml-math-svg/xhtml-math-svg.dtd"'),
235                ('svg PUBLIC "-//W3C//DTD SVG 1.1//EN" '
236                 '"http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd"'),
237                'html PUBLIC "-//IETF//DTD HTML 2.0//EN"',
238                'html PUBLIC "-//W3C//DTD HTML 3.2 Final//EN"']
239        for dtd in dtds:
240            self._run_check("<!DOCTYPE %s>" % dtd,
241                            [('decl', 'DOCTYPE ' + dtd)])
242
243    def test_slashes_in_starttag(self):
244        self._run_check('<a foo="var"/>', [('startendtag', 'a', [('foo', 'var')])])
245        html = ('<img width=902 height=250px '
246                'src="/sites/default/files/images/homepage/foo.jpg" '
247                '/*what am I doing here*/ />')
248        expected = [(
249            'startendtag', 'img',
250            [('width', '902'), ('height', '250px'),
251             ('src', '/sites/default/files/images/homepage/foo.jpg'),
252             ('*what', None), ('am', None), ('i', None),
253             ('doing', None), ('here*', None)]
254        )]
255        self._run_check(html, expected)
256        html = ('<a / /foo/ / /=/ / /bar/ / />'
257                '<a / /foo/ / /=/ / /bar/ / >')
258        expected = [
259            ('startendtag', 'a', [('foo', None), ('=', None), ('bar', None)]),
260            ('starttag', 'a', [('foo', None), ('=', None), ('bar', None)])
261        ]
262        self._run_check(html, expected)
263        #see issue #14538
264        html = ('<meta><meta / ><meta // ><meta / / >'
265                '<meta/><meta /><meta //><meta//>')
266        expected = [
267            ('starttag', 'meta', []), ('starttag', 'meta', []),
268            ('starttag', 'meta', []), ('starttag', 'meta', []),
269            ('startendtag', 'meta', []), ('startendtag', 'meta', []),
270            ('startendtag', 'meta', []), ('startendtag', 'meta', []),
271        ]
272        self._run_check(html, expected)
273
274    def test_declaration_junk_chars(self):
275        self._run_check("<!DOCTYPE foo $ >", [('decl', 'DOCTYPE foo $ ')])
276
277    def test_startendtag(self):
278        self._run_check("<p/>", [
279            ("startendtag", "p", []),
280            ])
281        self._run_check("<p></p>", [
282            ("starttag", "p", []),
283            ("endtag", "p"),
284            ])
285        self._run_check("<p><img src='foo' /></p>", [
286            ("starttag", "p", []),
287            ("startendtag", "img", [("src", "foo")]),
288            ("endtag", "p"),
289            ])
290
291    def test_invalid_end_tags(self):
292        # A collection of broken end tags. <br> is used as separator.
293        # see http://www.w3.org/TR/html5/tokenization.html#end-tag-open-state
294        # and #13993
295        html = ('<br></label</p><br></div end tmAd-leaderBoard><br></<h4><br>'
296                '</li class="unit"><br></li\r\n\t\t\t\t\t\t</ul><br></><br>')
297        expected = [('starttag', 'br', []),
298                    # < is part of the name, / is discarded, p is an attribute
299                    ('endtag', 'label<'),
300                    ('starttag', 'br', []),
301                    # text and attributes are discarded
302                    ('endtag', 'div'),
303                    ('starttag', 'br', []),
304                    # comment because the first char after </ is not a-zA-Z
305                    ('comment', '<h4'),
306                    ('starttag', 'br', []),
307                    # attributes are discarded
308                    ('endtag', 'li'),
309                    ('starttag', 'br', []),
310                    # everything till ul (included) is discarded
311                    ('endtag', 'li'),
312                    ('starttag', 'br', []),
313                    # </> is ignored
314                    ('starttag', 'br', [])]
315        self._run_check(html, expected)
316
317    def test_broken_invalid_end_tag(self):
318        # This is technically wrong (the "> shouldn't be included in the 'data')
319        # but is probably not worth fixing it (in addition to all the cases of
320        # the previous test, it would require a full attribute parsing).
321        # see #13993
322        html = '<b>This</b attr=">"> confuses the parser'
323        expected = [('starttag', 'b', []),
324                    ('data', 'This'),
325                    ('endtag', 'b'),
326                    ('data', '"> confuses the parser')]
327        self._run_check(html, expected)
328
329    def test_get_starttag_text(self):
330        s = """<foo:bar   \n   one="1"\ttwo=2   >"""
331        self._run_check_extra(s, [
332            ("starttag", "foo:bar", [("one", "1"), ("two", "2")]),
333            ("starttag_text", s)])
334
335    def test_cdata_content(self):
336        contents = [
337            '<!-- not a comment --> &not-an-entity-ref;',
338            "<not a='start tag'>",
339            '<a href="" /> <p> <span></span>',
340            'foo = "</scr" + "ipt>";',
341            'foo = "</SCRIPT" + ">";',
342            'foo = <\n/script> ',
343            '<!-- document.write("</scr" + "ipt>"); -->',
344            ('\n//<![CDATA[\n'
345             'document.write(\'<s\'+\'cript type="text/javascript" '
346             'src="http://www.example.org/r=\'+new '
347             'Date().getTime()+\'"><\\/s\'+\'cript>\');\n//]]>'),
348            '\n<!-- //\nvar foo = 3.14;\n// -->\n',
349            'foo = "</sty" + "le>";',
350            u'<!-- \u2603 -->',
351            # these two should be invalid according to the HTML 5 spec,
352            # section 8.1.2.2
353            #'foo = </\nscript>',
354            #'foo = </ script>',
355        ]
356        elements = ['script', 'style', 'SCRIPT', 'STYLE', 'Script', 'Style']
357        for content in contents:
358            for element in elements:
359                element_lower = element.lower()
360                s = u'<{element}>{content}</{element}>'.format(element=element,
361                                                               content=content)
362                self._run_check(s, [("starttag", element_lower, []),
363                                    ("data", content),
364                                    ("endtag", element_lower)])
365
366    def test_cdata_with_closing_tags(self):
367        # see issue #13358
368        # make sure that HTMLParser calls handle_data only once for each CDATA.
369        # The normal event collector normalizes the events in get_events,
370        # so we override it to return the original list of events.
371        class Collector(EventCollector):
372            def get_events(self):
373                return self.events
374
375        content = """<!-- not a comment --> &not-an-entity-ref;
376                  <a href="" /> </p><p> &amp; <span></span></style>
377                  '</script' + '>' </html> </head> </scripter>!"""
378        for element in [' script', 'script ', ' script ',
379                        '\nscript', 'script\n', '\nscript\n']:
380            s = u'<script>{content}</{element}>'.format(element=element,
381                                                        content=content)
382            self._run_check(s, [("starttag", "script", []),
383                                ("data", content),
384                                ("endtag", "script")],
385                            collector=Collector)
386
387    def test_malformatted_charref(self):
388        self._run_check("<p>&#bad;</p>", [
389            ("starttag", "p", []),
390            ("data", "&#bad;"),
391            ("endtag", "p"),
392        ])
393
394    def test_unescape_function(self):
395        parser = HTMLParser.HTMLParser()
396        self.assertEqual(parser.unescape('&#bad;'),'&#bad;')
397        self.assertEqual(parser.unescape('&#0038;'),'&')
398
399
400
401class AttributesTestCase(TestCaseBase):
402
403    def test_attr_syntax(self):
404        output = [
405          ("starttag", "a", [("b", "v"), ("c", "v"), ("d", "v"), ("e", None)])
406        ]
407        self._run_check("""<a b='v' c="v" d=v e>""", output)
408        self._run_check("""<a  b = 'v' c = "v" d = v e>""", output)
409        self._run_check("""<a\nb\n=\n'v'\nc\n=\n"v"\nd\n=\nv\ne>""", output)
410        self._run_check("""<a\tb\t=\t'v'\tc\t=\t"v"\td\t=\tv\te>""", output)
411
412    def test_attr_values(self):
413        self._run_check("""<a b='xxx\n\txxx' c="yyy\t\nyyy" d='\txyz\n'>""",
414                        [("starttag", "a", [("b", "xxx\n\txxx"),
415                                            ("c", "yyy\t\nyyy"),
416                                            ("d", "\txyz\n")])])
417        self._run_check("""<a b='' c="">""",
418                        [("starttag", "a", [("b", ""), ("c", "")])])
419        # Regression test for SF patch #669683.
420        self._run_check("<e a=rgb(1,2,3)>",
421                        [("starttag", "e", [("a", "rgb(1,2,3)")])])
422        # Regression test for SF bug #921657.
423        self._run_check(
424            "<a href=mailto:xyz@example.com>",
425            [("starttag", "a", [("href", "mailto:xyz@example.com")])])
426
427    def test_attr_nonascii(self):
428        # see issue 7311
429        self._run_check(
430            u"<img src=/foo/bar.png alt=\u4e2d\u6587>",
431            [("starttag", "img", [("src", "/foo/bar.png"),
432                                  ("alt", u"\u4e2d\u6587")])])
433        self._run_check(
434            u"<a title='\u30c6\u30b9\u30c8' href='\u30c6\u30b9\u30c8.html'>",
435            [("starttag", "a", [("title", u"\u30c6\u30b9\u30c8"),
436                                ("href", u"\u30c6\u30b9\u30c8.html")])])
437        self._run_check(
438            u'<a title="\u30c6\u30b9\u30c8" href="\u30c6\u30b9\u30c8.html">',
439            [("starttag", "a", [("title", u"\u30c6\u30b9\u30c8"),
440                                ("href", u"\u30c6\u30b9\u30c8.html")])])
441
442    def test_attr_entity_replacement(self):
443        self._run_check(
444            "<a b='&amp;&gt;&lt;&quot;&apos;'>",
445            [("starttag", "a", [("b", "&><\"'")])])
446
447    def test_attr_funky_names(self):
448        self._run_check(
449            "<a a.b='v' c:d=v e-f=v>",
450            [("starttag", "a", [("a.b", "v"), ("c:d", "v"), ("e-f", "v")])])
451        self._run_check(
452            "<a $><b $=%><c \=/>",
453            [("starttag", "a", [("$", None)]),
454             ("starttag", "b", [("$", "%")]),
455             ("starttag", "c", [("\\", "/")])])
456
457    def test_entityrefs_in_attributes(self):
458        self._run_check(
459            "<html foo='&euro;&amp;&#97;&#x61;&unsupported;'>",
460            [("starttag", "html", [("foo", u"\u20AC&aa&unsupported;")])])
461
462    def test_entities_in_attribute_value(self):
463        # see #1200313
464        for entity in ['&', '&amp;', '&#38;', '&#x26;']:
465            self._run_check('<a href="%s">' % entity,
466                            [("starttag", "a", [("href", "&")])])
467            self._run_check("<a href='%s'>" % entity,
468                            [("starttag", "a", [("href", "&")])])
469            self._run_check("<a href=%s>" % entity,
470                            [("starttag", "a", [("href", "&")])])
471
472    def test_malformed_attributes(self):
473        # see #13357
474        html = (
475            "<a href=test'style='color:red;bad1'>test - bad1</a>"
476            "<a href=test'+style='color:red;ba2'>test - bad2</a>"
477            "<a href=test'&nbsp;style='color:red;bad3'>test - bad3</a>"
478            "<a href = test'&nbsp;style='color:red;bad4'  >test - bad4</a>"
479        )
480        expected = [
481            ('starttag', 'a', [('href', "test'style='color:red;bad1'")]),
482            ('data', 'test - bad1'), ('endtag', 'a'),
483            ('starttag', 'a', [('href', "test'+style='color:red;ba2'")]),
484            ('data', 'test - bad2'), ('endtag', 'a'),
485            ('starttag', 'a', [('href', u"test'\xa0style='color:red;bad3'")]),
486            ('data', 'test - bad3'), ('endtag', 'a'),
487            ('starttag', 'a', [('href', u"test'\xa0style='color:red;bad4'")]),
488            ('data', 'test - bad4'), ('endtag', 'a')
489        ]
490        self._run_check(html, expected)
491
492    def test_malformed_adjacent_attributes(self):
493        # see #12629
494        self._run_check('<x><y z=""o"" /></x>',
495                        [('starttag', 'x', []),
496                            ('startendtag', 'y', [('z', ''), ('o""', None)]),
497                            ('endtag', 'x')])
498        self._run_check('<x><y z="""" /></x>',
499                        [('starttag', 'x', []),
500                            ('startendtag', 'y', [('z', ''), ('""', None)]),
501                            ('endtag', 'x')])
502
503    # see #755670 for the following 3 tests
504    def test_adjacent_attributes(self):
505        self._run_check('<a width="100%"cellspacing=0>',
506                        [("starttag", "a",
507                          [("width", "100%"), ("cellspacing","0")])])
508
509        self._run_check('<a id="foo"class="bar">',
510                        [("starttag", "a",
511                          [("id", "foo"), ("class","bar")])])
512
513    def test_missing_attribute_value(self):
514        self._run_check('<a v=>',
515                        [("starttag", "a", [("v", "")])])
516
517    def test_javascript_attribute_value(self):
518        self._run_check("<a href=javascript:popup('/popup/help.html')>",
519                        [("starttag", "a",
520                          [("href", "javascript:popup('/popup/help.html')")])])
521
522    def test_end_tag_in_attribute_value(self):
523        # see #1745761
524        self._run_check("<a href='http://www.example.org/\">;'>spam</a>",
525                        [("starttag", "a",
526                          [("href", "http://www.example.org/\">;")]),
527                         ("data", "spam"), ("endtag", "a")])
528
529    def test_comments(self):
530        html = ("<!-- I'm a valid comment -->"
531                '<!--me too!-->'
532                '<!------>'
533                '<!---->'
534                '<!----I have many hyphens---->'
535                '<!-- I have a > in the middle -->'
536                '<!-- and I have -- in the middle! -->')
537        expected = [('comment', " I'm a valid comment "),
538                    ('comment', 'me too!'),
539                    ('comment', '--'),
540                    ('comment', ''),
541                    ('comment', '--I have many hyphens--'),
542                    ('comment', ' I have a > in the middle '),
543                    ('comment', ' and I have -- in the middle! ')]
544        self._run_check(html, expected)
545
546    def test_broken_comments(self):
547        html = ('<! not really a comment >'
548                '<! not a comment either -->'
549                '<! -- close enough -->'
550                '<!><!<-- this was an empty comment>'
551                '<!!! another bogus comment !!!>')
552        expected = [
553            ('comment', ' not really a comment '),
554            ('comment', ' not a comment either --'),
555            ('comment', ' -- close enough --'),
556            ('comment', ''),
557            ('comment', '<-- this was an empty comment'),
558            ('comment', '!! another bogus comment !!!'),
559        ]
560        self._run_check(html, expected)
561
562    def test_condcoms(self):
563        html = ('<!--[if IE & !(lte IE 8)]>aren\'t<![endif]-->'
564                '<!--[if IE 8]>condcoms<![endif]-->'
565                '<!--[if lte IE 7]>pretty?<![endif]-->')
566        expected = [('comment', "[if IE & !(lte IE 8)]>aren't<![endif]"),
567                    ('comment', '[if IE 8]>condcoms<![endif]'),
568                    ('comment', '[if lte IE 7]>pretty?<![endif]')]
569        self._run_check(html, expected)
570
571    def test_broken_condcoms(self):
572        # these condcoms are missing the '--' after '<!' and before the '>'
573        html = ('<![if !(IE)]>broken condcom<![endif]>'
574                '<![if ! IE]><link href="favicon.tiff"/><![endif]>'
575                '<![if !IE 6]><img src="firefox.png" /><![endif]>'
576                '<![if !ie 6]><b>foo</b><![endif]>'
577                '<![if (!IE)|(lt IE 9)]><img src="mammoth.bmp" /><![endif]>')
578        # According to the HTML5 specs sections "8.2.4.44 Bogus comment state"
579        # and "8.2.4.45 Markup declaration open state", comment tokens should
580        # be emitted instead of 'unknown decl', but calling unknown_decl
581        # provides more flexibility.
582        # See also Lib/_markupbase.py:parse_declaration
583        expected = [
584            ('unknown decl', 'if !(IE)'),
585            ('data', 'broken condcom'),
586            ('unknown decl', 'endif'),
587            ('unknown decl', 'if ! IE'),
588            ('startendtag', 'link', [('href', 'favicon.tiff')]),
589            ('unknown decl', 'endif'),
590            ('unknown decl', 'if !IE 6'),
591            ('startendtag', 'img', [('src', 'firefox.png')]),
592            ('unknown decl', 'endif'),
593            ('unknown decl', 'if !ie 6'),
594            ('starttag', 'b', []),
595            ('data', 'foo'),
596            ('endtag', 'b'),
597            ('unknown decl', 'endif'),
598            ('unknown decl', 'if (!IE)|(lt IE 9)'),
599            ('startendtag', 'img', [('src', 'mammoth.bmp')]),
600            ('unknown decl', 'endif')
601        ]
602        self._run_check(html, expected)
603
604
605def test_main():
606    test_support.run_unittest(HTMLParserTestCase, AttributesTestCase)
607
608
609if __name__ == "__main__":
610    test_main()
611