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|
"""Tests for HTMLParser.py."""
import HTMLParser
import pprint
import unittest
from test import test_support
class EventCollector(HTMLParser.HTMLParser):
def __init__(self):
self.events = []
self.append = self.events.append
HTMLParser.HTMLParser.__init__(self)
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 TestCaseBase(unittest.TestCase):
def _run_check(self, source, expected_events, collector=EventCollector):
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\n"
"Expected:\n" + pprint.pformat(expected_events) +
"\nReceived:\n" + pprint.pformat(events))
def _run_check_extra(self, source, events):
self._run_check(source, events, EventCollectorExtra)
def _parse_error(self, source):
def parse(source=source):
parser = HTMLParser.HTMLParser()
parser.feed(source)
parser.close()
self.assertRaises(HTMLParser.HTMLParseError, parse)
class HTMLParserTestCase(TestCaseBase):
def test_processing_instruction_only(self):
self._run_check("<?processing instruction>", [
("pi", "processing instruction"),
])
self._run_check("<?processing instruction ?>", [
("pi", "processing instruction ?"),
])
def test_simple_html(self):
self._run_check("""
<!DOCTYPE html PUBLIC 'foo'>
<HTML>&entity; 
<!--comment1a
-></foo><bar><<?pi?></foo<bar
comment1b-->
<Img sRc='Bar' isMAP>sample
text
“
<!--comment2a-- --comment2b-->
</Html>
""", [
("data", "\n"),
("decl", "DOCTYPE html PUBLIC 'foo'"),
("data", "\n"),
("starttag", "html", []),
("entityref", "entity"),
("charref", "32"),
("data", "\n"),
("comment", "comment1a\n-></foo><bar><<?pi?></foo<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_unclosed_entityref(self):
self._run_check("&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("<a><b></a></b>", [
("starttag", "a", []),
("starttag", "b", []),
("endtag", "a"),
("endtag", "b"),
])
def test_bare_ampersands(self):
self._run_check("this text & contains & ampersands &", [
("data", "this text & contains & ampersands &"),
])
def test_bare_pointy_brackets(self):
self._run_check("this < text > contains < bare>pointy< brackets", [
("data", "this < text > contains < bare>pointy< brackets"),
])
def test_illegal_declarations(self):
self._run_check('<!spacer type="block" height="25">',
[('comment', 'spacer type="block" height="25"')])
def test_starttag_end_boundary(self):
self._run_check("""<a b='<'>""", [("starttag", "a", [("b", "<")])])
self._run_check("""<a b='>'>""", [("starttag", "a", [("b", ">")])])
def test_buffer_artefacts(self):
output = [("starttag", "a", [("b", "<")])]
self._run_check(["<a b='<'>"], output)
self._run_check(["<a ", "b='<'>"], output)
self._run_check(["<a b", "='<'>"], output)
self._run_check(["<a b=", "'<'>"], output)
self._run_check(["<a b='<", "'>"], output)
self._run_check(["<a b='<'", ">"], output)
output = [("starttag", "a", [("b", ">")])]
self._run_check(["<a b='>'>"], output)
self._run_check(["<a ", "b='>'>"], output)
self._run_check(["<a b", "='>'>"], output)
self._run_check(["<a b=", "'>'>"], output)
self._run_check(["<a b='>", "'>"], output)
self._run_check(["<a b='>'", ">"], output)
output = [("comment", "abc")]
self._run_check(["", "<!--abc-->"], output)
self._run_check(["<", "!--abc-->"], output)
self._run_check(["<!", "--abc-->"], output)
self._run_check(["<!-", "-abc-->"], output)
self._run_check(["<!--", "abc-->"], output)
self._run_check(["<!--a", "bc-->"], output)
self._run_check(["<!--ab", "c-->"], output)
self._run_check(["<!--abc", "-->"], output)
self._run_check(["<!--abc-", "->"], output)
self._run_check(["<!--abc--", ">"], output)
self._run_check(["<!--abc-->", ""], output)
def test_starttag_junk_chars(self):
self._run_check("</>", [])
self._run_check("</$>", [('comment', '$')])
self._run_check("</", [('data', '</')])
self._run_check("</a", [('data', '</a')])
# XXX this might be wrong
self._run_check("<a<a>", [('data', '<a'), ('starttag', 'a', [])])
self._run_check("</a<a>", [('endtag', 'a<a')])
self._run_check("<!", [('data', '<!')])
self._run_check("<a", [('data', '<a')])
self._run_check("<a foo='bar'", [('data', "<a foo='bar'")])
self._run_check("<a foo='bar", [('data', "<a foo='bar")])
self._run_check("<a foo='>'", [('data', "<a foo='>'")])
self._run_check("<a foo='>", [('data', "<a foo='>")])
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("<!DOCTYPE %s>" % dtd,
[('decl', 'DOCTYPE ' + dtd)])
def test_slashes_in_starttag(self):
self._run_check('<a foo="var"/>', [('startendtag', 'a', [('foo', 'var')])])
html = ('<img width=902 height=250px '
'src="/sites/default/files/images/homepage/foo.jpg" '
'/*what am I doing here*/ />')
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 = ('<a / /foo/ / /=/ / /bar/ / />'
'<a / /foo/ / /=/ / /bar/ / >')
expected = [
('startendtag', 'a', [('foo', None), ('=', None), ('bar', None)]),
('starttag', 'a', [('foo', None), ('=', None), ('bar', None)])
]
self._run_check(html, expected)
#see issue #14538
html = ('<meta><meta / ><meta // ><meta / / >'
'<meta/><meta /><meta //><meta//>')
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("<!DOCTYPE foo $ >", [('decl', 'DOCTYPE foo $ ')])
def test_startendtag(self):
self._run_check("<p/>", [
("startendtag", "p", []),
])
self._run_check("<p></p>", [
("starttag", "p", []),
("endtag", "p"),
])
self._run_check("<p><img src='foo' /></p>", [
("starttag", "p", []),
("startendtag", "img", [("src", "foo")]),
("endtag", "p"),
])
def test_invalid_end_tags(self):
# A collection of broken end tags. <br> is used as separator.
# see http://www.w3.org/TR/html5/tokenization.html#end-tag-open-state
# and #13993
html = ('<br></label</p><br></div end tmAd-leaderBoard><br></<h4><br>'
'</li class="unit"><br></li\r\n\t\t\t\t\t\t</ul><br></><br>')
expected = [('starttag', 'br', []),
# < is part of the name, / is discarded, p is an attribute
('endtag', 'label<'),
('starttag', 'br', []),
# text and attributes are discarded
('endtag', 'div'),
('starttag', 'br', []),
# comment because the first char after </ is not a-zA-Z
('comment', '<h4'),
('starttag', 'br', []),
# attributes are discarded
('endtag', 'li'),
('starttag', 'br', []),
# everything till ul (included) is discarded
('endtag', 'li'),
('starttag', 'br', []),
# </> is ignored
('starttag', 'br', [])]
self._run_check(html, expected)
def test_broken_invalid_end_tag(self):
# This is technically wrong (the "> 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 = '<b>This</b attr=">"> confuses the parser'
expected = [('starttag', 'b', []),
('data', 'This'),
('endtag', 'b'),
('data', '"> confuses the parser')]
self._run_check(html, expected)
def test_get_starttag_text(self):
s = """<foo:bar \n one="1"\ttwo=2 >"""
self._run_check_extra(s, [
("starttag", "foo:bar", [("one", "1"), ("two", "2")]),
("starttag_text", s)])
def test_cdata_content(self):
contents = [
'<!-- not a comment --> ¬-an-entity-ref;',
"<not a='start tag'>",
'<a href="" /> <p> <span></span>',
'foo = "</scr" + "ipt>";',
'foo = "</SCRIPT" + ">";',
'foo = <\n/script> ',
'<!-- document.write("</scr" + "ipt>"); -->',
('\n//<![CDATA[\n'
'document.write(\'<s\'+\'cript type="text/javascript" '
'src="http://www.example.org/r=\'+new '
'Date().getTime()+\'"><\\/s\'+\'cript>\');\n//]]>'),
'\n<!-- //\nvar foo = 3.14;\n// -->\n',
'foo = "</sty" + "le>";',
u'<!-- \u2603 -->',
# these two should be invalid according to the HTML 5 spec,
# section 8.1.2.2
#'foo = </\nscript>',
#'foo = </ script>',
]
elements = ['script', 'style', 'SCRIPT', 'STYLE', 'Script', 'Style']
for content in contents:
for element in elements:
element_lower = element.lower()
s = u'<{element}>{content}</{element}>'.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 = """<!-- not a comment --> ¬-an-entity-ref;
<a href="" /> </p><p> & <span></span></style>
'</script' + '>' </html> </head> </scripter>!"""
for element in [' script', 'script ', ' script ',
'\nscript', 'script\n', '\nscript\n']:
s = u'<script>{content}</{element}>'.format(element=element,
content=content)
self._run_check(s, [("starttag", "script", []),
("data", content),
("endtag", "script")],
collector=Collector)
def test_malformatted_charref(self):
self._run_check("<p>&#bad;</p>", [
("starttag", "p", []),
("data", "&#bad;"),
("endtag", "p"),
])
def test_unescape_function(self):
parser = HTMLParser.HTMLParser()
self.assertEqual(parser.unescape('&#bad;'),'&#bad;')
self.assertEqual(parser.unescape('&'),'&')
class AttributesTestCase(TestCaseBase):
def test_attr_syntax(self):
output = [
("starttag", "a", [("b", "v"), ("c", "v"), ("d", "v"), ("e", None)])
]
self._run_check("""<a b='v' c="v" d=v e>""", output)
self._run_check("""<a b = 'v' c = "v" d = v e>""", output)
self._run_check("""<a\nb\n=\n'v'\nc\n=\n"v"\nd\n=\nv\ne>""", output)
self._run_check("""<a\tb\t=\t'v'\tc\t=\t"v"\td\t=\tv\te>""", output)
def test_attr_values(self):
self._run_check("""<a b='xxx\n\txxx' c="yyy\t\nyyy" d='\txyz\n'>""",
[("starttag", "a", [("b", "xxx\n\txxx"),
("c", "yyy\t\nyyy"),
("d", "\txyz\n")])])
self._run_check("""<a b='' c="">""",
[("starttag", "a", [("b", ""), ("c", "")])])
# Regression test for SF patch #669683.
self._run_check("<e a=rgb(1,2,3)>",
[("starttag", "e", [("a", "rgb(1,2,3)")])])
# Regression test for SF bug #921657.
self._run_check(
"<a href=mailto:xyz@example.com>",
[("starttag", "a", [("href", "mailto:xyz@example.com")])])
def test_attr_nonascii(self):
# see issue 7311
self._run_check(
u"<img src=/foo/bar.png alt=\u4e2d\u6587>",
[("starttag", "img", [("src", "/foo/bar.png"),
("alt", u"\u4e2d\u6587")])])
self._run_check(
u"<a title='\u30c6\u30b9\u30c8' href='\u30c6\u30b9\u30c8.html'>",
[("starttag", "a", [("title", u"\u30c6\u30b9\u30c8"),
("href", u"\u30c6\u30b9\u30c8.html")])])
self._run_check(
u'<a title="\u30c6\u30b9\u30c8" href="\u30c6\u30b9\u30c8.html">',
[("starttag", "a", [("title", u"\u30c6\u30b9\u30c8"),
("href", u"\u30c6\u30b9\u30c8.html")])])
def test_attr_entity_replacement(self):
self._run_check(
"<a b='&><"''>",
[("starttag", "a", [("b", "&><\"'")])])
def test_attr_funky_names(self):
self._run_check(
"<a a.b='v' c:d=v e-f=v>",
[("starttag", "a", [("a.b", "v"), ("c:d", "v"), ("e-f", "v")])])
self._run_check(
"<a $><b $=%><c \=/>",
[("starttag", "a", [("$", None)]),
("starttag", "b", [("$", "%")]),
("starttag", "c", [("\\", "/")])])
def test_entityrefs_in_attributes(self):
self._run_check(
"<html foo='€&aa&unsupported;'>",
[("starttag", "html", [("foo", u"\u20AC&aa&unsupported;")])])
def test_entities_in_attribute_value(self):
# see #1200313
for entity in ['&', '&', '&', '&']:
self._run_check('<a href="%s">' % entity,
[("starttag", "a", [("href", "&")])])
self._run_check("<a href='%s'>" % entity,
[("starttag", "a", [("href", "&")])])
self._run_check("<a href=%s>" % entity,
[("starttag", "a", [("href", "&")])])
def test_malformed_attributes(self):
# see #13357
html = (
"<a href=test'style='color:red;bad1'>test - bad1</a>"
"<a href=test'+style='color:red;ba2'>test - bad2</a>"
"<a href=test' style='color:red;bad3'>test - bad3</a>"
"<a href = test' style='color:red;bad4' >test - bad4</a>"
)
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', u"test'\xa0style='color:red;bad3'")]),
('data', 'test - bad3'), ('endtag', 'a'),
('starttag', 'a', [('href', u"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('<x><y z=""o"" /></x>',
[('starttag', 'x', []),
('startendtag', 'y', [('z', ''), ('o""', None)]),
('endtag', 'x')])
self._run_check('<x><y z="""" /></x>',
[('starttag', 'x', []),
('startendtag', 'y', [('z', ''), ('""', None)]),
('endtag', 'x')])
# see #755670 for the following 3 tests
def test_adjacent_attributes(self):
self._run_check('<a width="100%"cellspacing=0>',
[("starttag", "a",
[("width", "100%"), ("cellspacing","0")])])
self._run_check('<a id="foo"class="bar">',
[("starttag", "a",
[("id", "foo"), ("class","bar")])])
def test_missing_attribute_value(self):
self._run_check('<a v=>',
[("starttag", "a", [("v", "")])])
def test_javascript_attribute_value(self):
self._run_check("<a href=javascript:popup('/popup/help.html')>",
[("starttag", "a",
[("href", "javascript:popup('/popup/help.html')")])])
def test_end_tag_in_attribute_value(self):
# see #1745761
self._run_check("<a href='http://www.example.org/\">;'>spam</a>",
[("starttag", "a",
[("href", "http://www.example.org/\">;")]),
("data", "spam"), ("endtag", "a")])
def test_comments(self):
html = ("<!-- I'm a valid comment -->"
'<!--me too!-->'
'<!------>'
'<!---->'
'<!----I have many hyphens---->'
'<!-- I have a > in the middle -->'
'<!-- and I have -- in the middle! -->')
expected = [('comment', " I'm a valid comment "),
('comment', 'me too!'),
('comment', '--'),
('comment', ''),
('comment', '--I have many hyphens--'),
('comment', ' I have a > in the middle '),
('comment', ' and I have -- in the middle! ')]
self._run_check(html, expected)
def test_broken_comments(self):
html = ('<! not really a comment >'
'<! not a comment either -->'
'<! -- close enough -->'
'<!><!<-- this was an empty comment>'
'<!!! another bogus comment !!!>')
expected = [
('comment', ' not really a comment '),
('comment', ' not a comment either --'),
('comment', ' -- close enough --'),
('comment', ''),
('comment', '<-- this was an empty comment'),
('comment', '!! another bogus comment !!!'),
]
self._run_check(html, expected)
def test_condcoms(self):
html = ('<!--[if IE & !(lte IE 8)]>aren\'t<![endif]-->'
'<!--[if IE 8]>condcoms<![endif]-->'
'<!--[if lte IE 7]>pretty?<![endif]-->')
expected = [('comment', "[if IE & !(lte IE 8)]>aren't<![endif]"),
('comment', '[if IE 8]>condcoms<![endif]'),
('comment', '[if lte IE 7]>pretty?<![endif]')]
self._run_check(html, expected)
def test_broken_condcoms(self):
# these condcoms are missing the '--' after '<!' and before the '>'
html = ('<![if !(IE)]>broken condcom<![endif]>'
'<![if ! IE]><link href="favicon.tiff"/><![endif]>'
'<![if !IE 6]><img src="firefox.png" /><![endif]>'
'<![if !ie 6]><b>foo</b><![endif]>'
'<![if (!IE)|(lt IE 9)]><img src="mammoth.bmp" /><![endif]>')
# 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_main():
test_support.run_unittest(HTMLParserTestCase, AttributesTestCase)
if __name__ == "__main__":
test_main()
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