File test_sgmllib.py of Package python-sgmllib3k

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File test_sgmllib.py of Package python-sgmllib3k (Revision 3587656e6894ebf5cea31c33ea3d49e1)

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import pprint
import re
import unittest
from test import test_support
sgmllib = test_support.import_module('sgmllib', deprecated=True)

class EventCollector(sgmllib.SGMLParser):

def __init__(self):
        self.events = []
        self.append = self.events.append
        sgmllib.SGMLParser.__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 unknown_starttag(self, tag, attrs):
        self.append(("starttag", tag, attrs))

def unknown_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, decl):
        self.append(("decl", decl))

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 CDATAEventCollector(EventCollector):
    def start_cdata(self, attrs):
        self.append(("starttag", "cdata", attrs))
        self.setliteral()

class HTMLEntityCollector(EventCollector):

entity_or_charref = re.compile('(?:&([a-zA-Z][-.a-zA-Z0-9]*)'
        '|&#(x[0-9a-zA-Z]+|[0-9]+))(;?)')

def convert_charref(self, name):
        self.append(("charref", "convert", name))
        if name[0] != "x":
            return EventCollector.convert_charref(self, name)

def convert_codepoint(self, codepoint):
        self.append(("codepoint", "convert", codepoint))
        EventCollector.convert_codepoint(self, codepoint)

def convert_entityref(self, name):
        self.append(("entityref", "convert", name))
        return EventCollector.convert_entityref(self, name)

# These to record that they were called, then pass the call along
    # to the default implementation so that it's actions can be
    # recorded.

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

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

class SGMLParserTestCase(unittest.TestCase):

collector = EventCollector

def get_events(self, source):
        parser = self.collector()
        try:
            for s in source:
                parser.feed(s)
            parser.close()
        except:
            #self.events = parser.events
            raise
        return parser.get_events()

def check_events(self, source, expected_events):
        try:
            events = self.get_events(source)
        except:
            #import sys
            #print >>sys.stderr, pprint.pformat(self.events)
            raise
        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 check_parse_error(self, source):
        parser = EventCollector()
        try:
            parser.feed(source)
            parser.close()
        except sgmllib.SGMLParseError:
            pass
        else:
            self.fail("expected SGMLParseError for %r\nReceived:\n%s"
                      % (source, pprint.pformat(parser.get_events())))

def test_doctype_decl_internal(self):
 inside = """\
DOCTYPE html PUBLIC '-//W3C//DTD HTML 4.01//EN'
 SYSTEM 'http://www.w3.org/TR/html401/strict.dtd' [
 <!ELEMENT html - O EMPTY>
 <!ATTLIST html
 version CDATA #IMPLIED
 profile CDATA 'DublinCore'>
 <!NOTATION datatype SYSTEM 'http://xml.python.org/notations/python-module'>
 <!ENTITY myEntity 'internal parsed entity'>
 <!ENTITY anEntity SYSTEM 'http://xml.python.org/entities/something.xml'>
 <!ENTITY % paramEntity 'name|name|name'>
 %paramEntity;
 
]"""
 self.check_events(["<!%s>" % inside], [
 ("decl", inside),
 ])

def test_doctype_decl_external(self):
 inside = "DOCTYPE html PUBLIC '-//W3C//DTD HTML 4.01//EN'"
 self.check_events("<!%s>" % inside, [
 ("decl", inside),
 ])

def test_underscore_in_attrname(self):
 # SF bug #436621
 """Make sure attribute names with underscores are accepted"""
 self.check_events("<a has_under _under>", [
 ("starttag", "a", [("has_under", "has_under"),
 ("_under", "_under")]),
 ])

def test_underscore_in_tagname(self):
 # SF bug #436621
 """Make sure tag names with underscores are accepted"""
 self.check_events("<has_under></has_under>", [
 ("starttag", "has_under", []),
 ("endtag", "has_under"),
 ])

def test_quotes_in_unquoted_attrs(self):
 # SF bug #436621
 """Be sure quotes in unquoted attributes are made part of the value"""
 self.check_events("<a href=foo'bar\"baz>", [
 ("starttag", "a", [("href", "foo'bar\"baz")]),
 ])

def test_xhtml_empty_tag(self):
 """Handling of XHTML-style empty start tags"""
 self.check_events(" text", [
 ("starttag", "br", []),
 ("data", "text"),
 ("starttag", "i", []),
 ("endtag", "i"),
 ])

def test_processing_instruction_only(self):
 self.check_events("<?processing instruction>", [
 ("pi", "processing instruction"),
 ])

def test_bad_nesting(self):
 self.check_events("<a></a>", [
 ("starttag", "a", []),
 ("starttag", "b", []),
 ("endtag", "a"),
 ("endtag", "b"),
 ])

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

def test_bare_pointy_brackets(self):
 self.check_events("this < text > contains < bare>pointy< brackets", [
 ("data", "this < text > contains < bare>pointy< brackets"),
 ])

def test_attr_syntax(self):
 output = [
 ("starttag", "a", [("b", "v"), ("c", "v"), ("d", "v"), ("e", "e")])
 ]
 self.check_events("""<a b='v' c="v" d=v e>""", output)
 self.check_events("""<a b = 'v' c = "v" d = v e>""", output)
 self.check_events("""<a\nb\n=\n'v'\nc\n=\n"v"\nd\n=\nv\ne>""", output)
 self.check_events("""<a\tb\t=\t'v'\tc\t=\t"v"\td\t=\tv\te>""", output)

def test_attr_values(self):
 self.check_events("""<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.check_events("""<a b='' c="">""", [
 ("starttag", "a", [("b", ""), ("c", "")]),
 ])
 # URL construction stuff from RFC 1808:
 safe = "$-_.+"
 extra = "!*'(),"
 reserved = ";/?:@&="
 url = "http://example.com:8080/path/to/file?%s%s%s" % (
 safe, extra, reserved)
 self.check_events("""<e a=%s>""" % url, [
 ("starttag", "e", [("a", url)]),
 ])
 # Regression test for SF patch #669683.
 self.check_events("<e a=rgb(1,2,3)>", [
 ("starttag", "e", [("a", "rgb(1,2,3)")]),
 ])

def test_attr_values_entities(self):
 """Substitution of entities and charrefs in attribute values"""
 # SF bug #1452246
 self.check_events("""<a b=&lt; c=&lt;&gt; d=&lt-&gt; e='&lt; '
 f="&xxx;" g='&#32;&#33;' h='&#500;'
 i='x?a=b&c=d;'
 j='&amp;#42;' k='&#38;#42;'>""",
 [("starttag", "a", [("b", "<"),
 ("c", "<>"),
 ("d", "&lt->"),
 ("e", "< "),
 ("f", "&xxx;"),
 ("g", " !"),
 ("h", "&#500;"),
 ("i", "x?a=b&c=d;"),
 ("j", "&#42;"),
 ("k", "&#42;"),
 ])])

def test_convert_overrides(self):
 # This checks that the character and entity reference
 # conversion helpers are called at the documented times. No
 # attempt is made to really change what the parser accepts.
 #
 self.collector = HTMLEntityCollector
 self.check_events(('<a title="&ldquo;test&#x201d;">foo</a>'
 '&foobar;&#42;'), [
 ('entityref', 'convert', 'ldquo'),
 ('charref', 'convert', 'x201d'),
 ('starttag', 'a', [('title', '&ldquo;test&#x201d;')]),
 ('data', 'foo'),
 ('endtag', 'a'),
 ('entityref', 'foobar'),
 ('entityref', 'convert', 'foobar'),
 ('charref', '42'),
 ('charref', 'convert', '42'),
 ('codepoint', 'convert', 42),
 ])

def test_attr_funky_names(self):
 self.check_events("""<a a.b='v' c:d=v e-f=v>""", [
 ("starttag", "a", [("a.b", "v"), ("c:d", "v"), ("e-f", "v")]),
 ])

def test_attr_value_ip6_url(self):
 # http://www.python.org/sf/853506
 self.check_events(("<a href='http://[1080::8:800:200C:417A]/'>"
 "<a href=http://[1080::8:800:200C:417A]/>"), [
 ("starttag", "a", [("href", "http://[1080::8:800:200C:417A]/")]),
 ("starttag", "a", [("href", "http://[1080::8:800:200C:417A]/")]),
 ])

def test_weird_starttags(self):
 self.check_events("<a<a>", [
 ("starttag", "a", []),
 ("starttag", "a", []),
 ])
 self.check_events("</a<a>", [
 ("endtag", "a"),
 ("starttag", "a", []),
 ])

def test_declaration_junk_chars(self):
 self.check_parse_error("<!DOCTYPE foo $ >")

def test_get_starttag_text(self):
 s = """<foobar \n one="1"\ttwo=2 >"""
 self.check_events(s, [
 ("starttag", "foobar", [("one", "1"), ("two", "2")]),
 ])

def test_cdata_content(self):
 s = ("<cdata>  &not-an-entity-ref; </cdata>"
 "<notcdata>  </notcdata>")
 self.collector = CDATAEventCollector
 self.check_events(s, [
 ("starttag", "cdata", []),
 ("data", "  &not-an-entity-ref; "),
 ("endtag", "cdata"),
 ("starttag", "notcdata", []),
 ("data", " "),
 ("comment", " comment "),
 ("data", " "),
 ("endtag", "notcdata"),
 ])
 s = """<cdata> <not a='start tag'> </cdata>"""
 self.check_events(s, [
 ("starttag", "cdata", []),
 ("data", " <not a='start tag'> "),
 ("endtag", "cdata"),
 ])

def test_illegal_declarations(self):
 s = 'abc<!spacer type="block" height="25">def'
 self.check_events(s, [
 ("data", "abc"),
 ("unknown decl", 'spacer type="block" height="25"'),
 ("data", "def"),
 ])

def test_enumerated_attr_type(self):
 s = "<!DOCTYPE doc [<!ATTLIST doc attr (a | b) >]>"
 self.check_events(s, [
 ('decl', 'DOCTYPE doc [<!ATTLIST doc attr (a | b) >]'),
 ])

def test_read_chunks(self):
        # SF bug #1541697, this caused sgml parser to hang
        # Just verify this code doesn't cause a hang.
        CHUNK = 1024  # increasing this to 8212 makes the problem go away

f = open(test_support.findfile('sgml_input.html'))
        fp = sgmllib.SGMLParser()
        while 1:
            data = f.read(CHUNK)
            fp.feed(data)
            if len(data) != CHUNK:
                break

def test_only_decode_ascii(self):
 # SF bug #1651995, make sure non-ascii character references are not decoded
 s = '<signs exclamation="&#33" copyright="&#169" quoteleft="&#8216;">'
 self.check_events(s, [
 ('starttag', 'signs',
 [('exclamation', '!'), ('copyright', '&#169'),
 ('quoteleft', '&#8216;')]),
 ])

# XXX These tests have been disabled by prefixing their names with
    # an underscore.  The first two exercise outstanding bugs in the
    # sgmllib module, and the third exhibits questionable behavior
    # that needs to be carefully considered before changing it.

def _test_starttag_end_boundary(self):
 self.check_events("<a b='<'>", [("starttag", "a", [("b", "<")])])
 self.check_events("<a b='>'>", [("starttag", "a", [("b", ">")])])

def _test_buffer_artefacts(self):
 output = [("starttag", "a", [("b", "<")])]
 self.check_events(["<a b='<'>"], output)
 self.check_events(["<a ", "b='<'>"], output)
 self.check_events(["<a b", "='<'>"], output)
 self.check_events(["<a b=", "'<'>"], output)
 self.check_events(["<a b='<", "'>"], output)
 self.check_events(["<a b='<'", ">"], output)

output = [("starttag", "a", [("b", ">")])]
 self.check_events(["<a b='>'>"], output)
 self.check_events(["<a ", "b='>'>"], output)
 self.check_events(["<a b", "='>'>"], output)
 self.check_events(["<a b=", "'>'>"], output)
 self.check_events(["<a b='>", "'>"], output)
 self.check_events(["<a b='>'", ">"], output)

output = [("comment", "abc")]
 self.check_events(["", ""], output)
 self.check_events(["<", "!--abc-->"], output)
 self.check_events(["<!", "--abc-->"], output)
 self.check_events(["<!-", "-abc-->"], output)
 self.check_events([""], output)
 self.check_events([""], output)
 self.check_events([""], output)
 self.check_events([""], output)
 self.check_events(["", ""], output)

def _test_starttag_junk_chars(self):
 self.check_parse_error("<")
 self.check_parse_error("<>")
 self.check_parse_error("</$>")
 self.check_parse_error("</")
 self.check_parse_error("</a")
 self.check_parse_error("<$")
 self.check_parse_error("<$>")
 self.check_parse_error("<!")
 self.check_parse_error("<a $>")
 self.check_parse_error("<a")
 self.check_parse_error("<a foo='bar'")
 self.check_parse_error("<a foo='bar")
 self.check_parse_error("<a foo='>'")
 self.check_parse_error("<a foo='>")
 self.check_parse_error("<a foo=>")

def test_main():
    test_support.run_unittest(SGMLParserTestCase)

if __name__ == "__main__":
    test_main()

Places

File test_sgmllib.py of Package python-sgmllib3k (Revision 3587656e6894ebf5cea31c33ea3d49e1)

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