Mercurial > cpython-lru_cache-weakref

annotate Lib/test/test_htmlparser.py @ 71285:8bc9dbc61ba6 3.2

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Issue #12326: document the recommended idiom for checking sys.platform on Unix systems. Also, point to the various alternatives.
author Antoine Pitrou <solipsis@pitrou.net>
date Sat, 09 Jul 2011 15:54:23 +0200
parents 225400cb6e84
children 9896fc2a8167
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1 """Tests for HTMLParser.py."""
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2
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3 import html.parser
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4 import pprint
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5 import unittest
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6 from test import support
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7
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8
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9 class EventCollector(html.parser.HTMLParser):
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10
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11 def __init__(self, *args, **kw):
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12 self.events = []
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13 self.append = self.events.append
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14 html.parser.HTMLParser.__init__(self, *args, **kw)
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15
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16 def get_events(self):
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17 # Normalize the list of events so that buffer artefacts don't
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18 # separate runs of contiguous characters.
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19 L = []
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20 prevtype = None
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21 for event in self.events:
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22 type = event[0]
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23 if type == prevtype == "data":
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24 L[-1] = ("data", L[-1][1] + event[1])
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25 else:
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26 L.append(event)
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27 prevtype = type
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28 self.events = L
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29 return L
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30
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31 # structure markup
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32
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33 def handle_starttag(self, tag, attrs):
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34 self.append(("starttag", tag, attrs))
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35
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36 def handle_startendtag(self, tag, attrs):
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37 self.append(("startendtag", tag, attrs))
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38
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39 def handle_endtag(self, tag):
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40 self.append(("endtag", tag))
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41
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42 # all other markup
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43
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44 def handle_comment(self, data):
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45 self.append(("comment", data))
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46
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47 def handle_charref(self, data):
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48 self.append(("charref", data))
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49
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50 def handle_data(self, data):
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51 self.append(("data", data))
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52
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53 def handle_decl(self, data):
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54 self.append(("decl", data))
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55
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56 def handle_entityref(self, data):
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57 self.append(("entityref", data))
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58
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59 def handle_pi(self, data):
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60 self.append(("pi", data))
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61
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62 def unknown_decl(self, decl):
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63 self.append(("unknown decl", decl))
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64
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65
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66 class EventCollectorExtra(EventCollector):
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67
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68 def handle_starttag(self, tag, attrs):
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69 EventCollector.handle_starttag(self, tag, attrs)
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70 self.append(("starttag_text", self.get_starttag_text()))
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71
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72
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73 class TestCaseBase(unittest.TestCase):
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74
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75 def _run_check(self, source, expected_events, collector=None):
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76 if collector is None:
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77 collector = EventCollector()
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78 parser = collector
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79 for s in source:
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80 parser.feed(s)
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81 parser.close()
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82 events = parser.get_events()
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83 if events != expected_events:
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84 self.fail("received events did not match expected events\n"
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85 "Expected:\n" + pprint.pformat(expected_events) +
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86 "\nReceived:\n" + pprint.pformat(events))
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87
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88 def _run_check_extra(self, source, events):
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89 self._run_check(source, events, EventCollectorExtra())
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90
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91 def _parse_error(self, source):
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92 def parse(source=source):
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93 parser = html.parser.HTMLParser()
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94 parser.feed(source)
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95 parser.close()
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96 self.assertRaises(html.parser.HTMLParseError, parse)
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97
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98
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99 class HTMLParserTestCase(TestCaseBase):
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100
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101 def test_processing_instruction_only(self):
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102 self._run_check("<?processing instruction>", [
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103 ("pi", "processing instruction"),
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104 ])
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105 self._run_check("<?processing instruction ?>", [
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106 ("pi", "processing instruction ?"),
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107 ])
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108
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109 def test_simple_html(self):
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110 self._run_check("""
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111 <!DOCTYPE html PUBLIC 'foo'>
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112 <HTML>&entity;&#32;
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113 <!--comment1a
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114 -></foo><bar>&lt;<?pi?></foo<bar
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115 comment1b-->
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116 <Img sRc='Bar' isMAP>sample
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117 text
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118 &#x201C;
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119 <!--comment2a-- --comment2b--><!>
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120 </Html>
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121 """, [
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122 ("data", "\n"),
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123 ("decl", "DOCTYPE html PUBLIC 'foo'"),
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124 ("data", "\n"),
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125 ("starttag", "html", []),
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126 ("entityref", "entity"),
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127 ("charref", "32"),
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128 ("data", "\n"),
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129 ("comment", "comment1a\n-></foo><bar>&lt;<?pi?></foo<bar\ncomment1b"),
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130 ("data", "\n"),
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131 ("starttag", "img", [("src", "Bar"), ("ismap", None)]),
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132 ("data", "sample\ntext\n"),
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133 ("charref", "x201C"),
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134 ("data", "\n"),
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135 ("comment", "comment2a-- --comment2b"),
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136 ("data", "\n"),
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137 ("endtag", "html"),
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138 ("data", "\n"),
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139 ])
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140
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141 def test_malformatted_charref(self):
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142 self._run_check("<p>&#bad;</p>", [
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143 ("starttag", "p", []),
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144 ("data", "&#bad;"),
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145 ("endtag", "p"),
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146 ])
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147
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148 def test_unclosed_entityref(self):
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149 self._run_check("&entityref foo", [
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150 ("entityref", "entityref"),
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151 ("data", " foo"),
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152 ])
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153
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154 def test_doctype_decl(self):
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155 inside = """\
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156 DOCTYPE html [
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157 <!ELEMENT html - O EMPTY>
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158 <!ATTLIST html
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159 version CDATA #IMPLIED
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160 profile CDATA 'DublinCore'>
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161 <!NOTATION datatype SYSTEM 'http://xml.python.org/notations/python-module'>
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162 <!ENTITY myEntity 'internal parsed entity'>
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163 <!ENTITY anEntity SYSTEM 'http://xml.python.org/entities/something.xml'>
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164 <!ENTITY % paramEntity 'name|name|name'>
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165 %paramEntity;
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166 <!-- comment -->
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167 ]"""
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168 self._run_check("<!%s>" % inside, [
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169 ("decl", inside),
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170 ])
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171
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172 def test_bad_nesting(self):
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173 # Strangely, this *is* supposed to test that overlapping
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174 # elements are allowed. HTMLParser is more geared toward
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175 # lexing the input that parsing the structure.
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176 self._run_check("<a><b></a></b>", [
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177 ("starttag", "a", []),
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178 ("starttag", "b", []),
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179 ("endtag", "a"),
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180 ("endtag", "b"),
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181 ])
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182
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183 def test_bare_ampersands(self):
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184 self._run_check("this text & contains & ampersands &", [
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185 ("data", "this text & contains & ampersands &"),
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186 ])
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187
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188 def test_bare_pointy_brackets(self):
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189 self._run_check("this < text > contains < bare>pointy< brackets", [
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190 ("data", "this < text > contains < bare>pointy< brackets"),
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191 ])
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192
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193 def test_attr_syntax(self):
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194 output = [
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195 ("starttag", "a", [("b", "v"), ("c", "v"), ("d", "v"), ("e", None)])
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196 ]
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197 self._run_check("""<a b='v' c="v" d=v e>""", output)
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198 self._run_check("""<a b = 'v' c = "v" d = v e>""", output)
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199 self._run_check("""<a\nb\n=\n'v'\nc\n=\n"v"\nd\n=\nv\ne>""", output)
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200 self._run_check("""<a\tb\t=\t'v'\tc\t=\t"v"\td\t=\tv\te>""", output)
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201
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202 def test_attr_values(self):
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203 self._run_check("""<a b='xxx\n\txxx' c="yyy\t\nyyy" d='\txyz\n'>""",
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204 [("starttag", "a", [("b", "xxx\n\txxx"),
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205 ("c", "yyy\t\nyyy"),
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206 ("d", "\txyz\n")])
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207 ])
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208 self._run_check("""<a b='' c="">""", [
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209 ("starttag", "a", [("b", ""), ("c", "")]),
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210 ])
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211 # Regression test for SF patch #669683.
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212 self._run_check("<e a=rgb(1,2,3)>", [
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213 ("starttag", "e", [("a", "rgb(1,2,3)")]),
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214 ])
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215 # Regression test for SF bug #921657.
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216 self._run_check("<a href=mailto:xyz@example.com>", [
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217 ("starttag", "a", [("href", "mailto:xyz@example.com")]),
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218 ])
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219
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220 def test_attr_nonascii(self):
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221 # see issue 7311
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222 self._run_check("<img src=/foo/bar.png alt=\u4e2d\u6587>", [
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223 ("starttag", "img", [("src", "/foo/bar.png"),
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224 ("alt", "\u4e2d\u6587")]),
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225 ])
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226 self._run_check("<a title='\u30c6\u30b9\u30c8' "
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227 "href='\u30c6\u30b9\u30c8.html'>", [
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228 ("starttag", "a", [("title", "\u30c6\u30b9\u30c8"),
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229 ("href", "\u30c6\u30b9\u30c8.html")]),
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230 ])
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231 self._run_check('<a title="\u30c6\u30b9\u30c8" '
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232 'href="\u30c6\u30b9\u30c8.html">', [
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233 ("starttag", "a", [("title", "\u30c6\u30b9\u30c8"),
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234 ("href", "\u30c6\u30b9\u30c8.html")]),
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235 ])
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236
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237 def test_attr_entity_replacement(self):
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238 self._run_check("""<a b='&amp;&gt;&lt;&quot;&apos;'>""", [
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239 ("starttag", "a", [("b", "&><\"'")]),
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240 ])
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241
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242 def test_attr_funky_names(self):
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243 self._run_check("""<a a.b='v' c:d=v e-f=v>""", [
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244 ("starttag", "a", [("a.b", "v"), ("c:d", "v"), ("e-f", "v")]),
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245 ])
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246
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247 def test_illegal_declarations(self):
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248 self._parse_error('<!spacer type="block" height="25">')
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249
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250 def test_starttag_end_boundary(self):
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251 self._run_check("""<a b='<'>""", [("starttag", "a", [("b", "<")])])
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252 self._run_check("""<a b='>'>""", [("starttag", "a", [("b", ">")])])
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253
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254 def test_buffer_artefacts(self):
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255 output = [("starttag", "a", [("b", "<")])]
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256 self._run_check(["<a b='<'>"], output)
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257 self._run_check(["<a ", "b='<'>"], output)
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258 self._run_check(["<a b", "='<'>"], output)
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259 self._run_check(["<a b=", "'<'>"], output)
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260 self._run_check(["<a b='<", "'>"], output)
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261 self._run_check(["<a b='<'", ">"], output)
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262
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263 output = [("starttag", "a", [("b", ">")])]
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264 self._run_check(["<a b='>'>"], output)
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265 self._run_check(["<a ", "b='>'>"], output)
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266 self._run_check(["<a b", "='>'>"], output)
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267 self._run_check(["<a b=", "'>'>"], output)
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268 self._run_check(["<a b='>", "'>"], output)
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269 self._run_check(["<a b='>'", ">"], output)
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270
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271 output = [("comment", "abc")]
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272 self._run_check(["", "<!--abc-->"], output)
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273 self._run_check(["<", "!--abc-->"], output)
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274 self._run_check(["<!", "--abc-->"], output)
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275 self._run_check(["<!-", "-abc-->"], output)
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276 self._run_check(["<!--", "abc-->"], output)
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277 self._run_check(["<!--a", "bc-->"], output)
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278 self._run_check(["<!--ab", "c-->"], output)
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279 self._run_check(["<!--abc", "-->"], output)
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280 self._run_check(["<!--abc-", "->"], output)
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281 self._run_check(["<!--abc--", ">"], output)
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282 self._run_check(["<!--abc-->", ""], output)
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283
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284 def test_starttag_junk_chars(self):
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285 self._parse_error("</>")
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286 self._parse_error("</$>")
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287 self._parse_error("</")
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288 self._parse_error("</a")
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289 self._parse_error("<a<a>")
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290 self._parse_error("</a<a>")
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291 self._parse_error("<!")
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292 self._parse_error("<a $>")
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293 self._parse_error("<a")
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294 self._parse_error("<a foo='bar'")
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295 self._parse_error("<a foo='bar")
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296 self._parse_error("<a foo='>'")
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297 self._parse_error("<a foo='>")
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298 self._parse_error("<a foo=>")
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299
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300 def test_declaration_junk_chars(self):
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301 self._parse_error("<!DOCTYPE foo $ >")
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302
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303 def test_startendtag(self):
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304 self._run_check("<p/>", [
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305 ("startendtag", "p", []),
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306 ])
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307 self._run_check("<p></p>", [
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308 ("starttag", "p", []),
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309 ("endtag", "p"),
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310 ])
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311 self._run_check("<p><img src='foo' /></p>", [
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312 ("starttag", "p", []),
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313 ("startendtag", "img", [("src", "foo")]),
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314 ("endtag", "p"),
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315 ])
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316
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317 def test_get_starttag_text(self):
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318 s = """<foo:bar \n one="1"\ttwo=2 >"""
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319 self._run_check_extra(s, [
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320 ("starttag", "foo:bar", [("one", "1"), ("two", "2")]),
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321 ("starttag_text", s)])
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322
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323 def test_cdata_content(self):
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324 s = """<script> <!-- not a comment --> &not-an-entity-ref; </script>"""
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325 self._run_check(s, [
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326 ("starttag", "script", []),
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327 ("data", " <!-- not a comment --> &not-an-entity-ref; "),
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328 ("endtag", "script"),
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329 ])
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330 s = """<script> <not a='start tag'> </script>"""
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331 self._run_check(s, [
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332 ("starttag", "script", []),
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333 ("data", " <not a='start tag'> "),
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334 ("endtag", "script"),
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335 ])
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336
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337 def test_entityrefs_in_attributes(self):
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338 self._run_check("<html foo='&euro;&amp;&#97;&#x61;&unsupported;'>", [
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339 ("starttag", "html", [("foo", "\u20AC&aa&unsupported;")])
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340 ])
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341
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342
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343 class HTMLParserTolerantTestCase(TestCaseBase):
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344
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345 def setUp(self):
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346 self.collector = EventCollector(strict=False)
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347
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348 def test_tolerant_parsing(self):
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349 self._run_check('<html <html>te>>xt&a<<bc</a></html>\n'
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350 '<img src="URL><//img></html</html>', [
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351 ('data', '<html '),
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352 ('starttag', 'html', []),
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353 ('data', 'te>>xt'),
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354 ('entityref', 'a'),
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355 ('data', '<<bc'),
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356 ('endtag', 'a'),
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357 ('endtag', 'html'),
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358 ('data', '\n<img src="URL><//img></html'),
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359 ('endtag', 'html')],
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360 collector = self.collector)
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361
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362 def test_comma_between_attributes(self):
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363 self._run_check('<form action="/xxx.php?a=1&amp;b=2&amp", '
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364 'method="post">', [
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365 ('starttag', 'form',
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366 [('action', '/xxx.php?a=1&b=2&amp'),
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367 ('method', 'post')])],
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368 collector = self.collector)
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369
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370 def test_weird_chars_in_unquoted_attribute_values(self):
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371 self._run_check('<form action=bogus|&#()value>', [
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372 ('starttag', 'form',
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373 [('action', 'bogus|&#()value')])],
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374 collector = self.collector)
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375
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376 def test_unescape_function(self):
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377 p = html.parser.HTMLParser()
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378 self.assertEqual(p.unescape('&#bad;'),'&#bad;')
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379 self.assertEqual(p.unescape('&#0038;'),'&')
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380
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381
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382 def test_main():
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383 support.run_unittest(HTMLParserTestCase, HTMLParserTolerantTestCase)
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384
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385
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386 if __name__ == "__main__":
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387 test_main()