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annotate planemo/lib/python3.7/site-packages/bs4/tests/test_html5lib.py @ 0:d30785e31577 draft

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"planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
author guerler
date Fri, 31 Jul 2020 00:18:57 -0400
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Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 """Tests to ensure that the html5lib tree builder generates good trees."""
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2
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3 import warnings
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4
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5 try:
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6 from bs4.builder import HTML5TreeBuilder
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7 HTML5LIB_PRESENT = True
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8 except ImportError as e:
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9 HTML5LIB_PRESENT = False
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10 from bs4.element import SoupStrainer
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11 from bs4.testing import (
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12 HTML5TreeBuilderSmokeTest,
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13 SoupTest,
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14 skipIf,
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15 )
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16
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17 @skipIf(
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18 not HTML5LIB_PRESENT,
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19 "html5lib seems not to be present, not testing its tree builder.")
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20 class HTML5LibBuilderSmokeTest(SoupTest, HTML5TreeBuilderSmokeTest):
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21 """See ``HTML5TreeBuilderSmokeTest``."""
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22
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23 @property
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24 def default_builder(self):
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25 return HTML5TreeBuilder
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26
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27 def test_soupstrainer(self):
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28 # The html5lib tree builder does not support SoupStrainers.
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29 strainer = SoupStrainer("b")
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30 markup = "<p>A <b>bold</b> statement.</p>"
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31 with warnings.catch_warnings(record=True) as w:
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32 soup = self.soup(markup, parse_only=strainer)
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33 self.assertEqual(
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34 soup.decode(), self.document_for(markup))
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35
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36 self.assertTrue(
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37 "the html5lib tree builder doesn't support parse_only" in
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38 str(w[0].message))
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39
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40 def test_correctly_nested_tables(self):
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41 """html5lib inserts <tbody> tags where other parsers don't."""
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42 markup = ('<table id="1">'
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43 '<tr>'
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44 "<td>Here's another table:"
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45 '<table id="2">'
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46 '<tr><td>foo</td></tr>'
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47 '</table></td>')
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48
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49 self.assertSoupEquals(
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50 markup,
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51 '<table id="1"><tbody><tr><td>Here\'s another table:'
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52 '<table id="2"><tbody><tr><td>foo</td></tr></tbody></table>'
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53 '</td></tr></tbody></table>')
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54
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55 self.assertSoupEquals(
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56 "<table><thead><tr><td>Foo</td></tr></thead>"
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57 "<tbody><tr><td>Bar</td></tr></tbody>"
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58 "<tfoot><tr><td>Baz</td></tr></tfoot></table>")
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59
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60 def test_xml_declaration_followed_by_doctype(self):
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61 markup = '''<?xml version="1.0" encoding="utf-8"?>
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62 <!DOCTYPE html>
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63 <html>
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64 <head>
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65 </head>
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66 <body>
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67 <p>foo</p>
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68 </body>
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69 </html>'''
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70 soup = self.soup(markup)
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71 # Verify that we can reach the <p> tag; this means the tree is connected.
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72 self.assertEqual(b"<p>foo</p>", soup.p.encode())
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73
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74 def test_reparented_markup(self):
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75 markup = '<p><em>foo</p>\n<p>bar<a></a></em></p>'
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76 soup = self.soup(markup)
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77 self.assertEqual("<body><p><em>foo</em></p><em>\n</em><p><em>bar<a></a></em></p></body>", soup.body.decode())
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78 self.assertEqual(2, len(soup.find_all('p')))
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79
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80
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81 def test_reparented_markup_ends_with_whitespace(self):
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82 markup = '<p><em>foo</p>\n<p>bar<a></a></em></p>\n'
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83 soup = self.soup(markup)
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84 self.assertEqual("<body><p><em>foo</em></p><em>\n</em><p><em>bar<a></a></em></p>\n</body>", soup.body.decode())
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85 self.assertEqual(2, len(soup.find_all('p')))
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86
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87 def test_reparented_markup_containing_identical_whitespace_nodes(self):
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88 """Verify that we keep the two whitespace nodes in this
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89 document distinct when reparenting the adjacent <tbody> tags.
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90 """
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91 markup = '<table> <tbody><tbody><ims></tbody> </table>'
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92 soup = self.soup(markup)
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93 space1, space2 = soup.find_all(string=' ')
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94 tbody1, tbody2 = soup.find_all('tbody')
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95 assert space1.next_element is tbody1
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96 assert tbody2.next_element is space2
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97
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98 def test_reparented_markup_containing_children(self):
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99 markup = '<div><a>aftermath<p><noscript>target</noscript>aftermath</a></p></div>'
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100 soup = self.soup(markup)
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101 noscript = soup.noscript
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102 self.assertEqual("target", noscript.next_element)
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103 target = soup.find(string='target')
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104
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105 # The 'aftermath' string was duplicated; we want the second one.
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106 final_aftermath = soup.find_all(string='aftermath')[-1]
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107
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108 # The <noscript> tag was moved beneath a copy of the <a> tag,
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109 # but the 'target' string within is still connected to the
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110 # (second) 'aftermath' string.
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111 self.assertEqual(final_aftermath, target.next_element)
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112 self.assertEqual(target, final_aftermath.previous_element)
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113
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114 def test_processing_instruction(self):
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115 """Processing instructions become comments."""
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116 markup = b"""<?PITarget PIContent?>"""
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117 soup = self.soup(markup)
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118 assert str(soup).startswith("<!--?PITarget PIContent?-->")
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119
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120 def test_cloned_multivalue_node(self):
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121 markup = b"""<a class="my_class"><p></a>"""
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122 soup = self.soup(markup)
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123 a1, a2 = soup.find_all('a')
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124 self.assertEqual(a1, a2)
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125 assert a1 is not a2
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126
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127 def test_foster_parenting(self):
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128 markup = b"""<table><td></tbody>A"""
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129 soup = self.soup(markup)
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130 self.assertEqual("<body>A<table><tbody><tr><td></td></tr></tbody></table></body>", soup.body.decode())
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131
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132 def test_extraction(self):
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133 """
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134 Test that extraction does not destroy the tree.
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135
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136 https://bugs.launchpad.net/beautifulsoup/+bug/1782928
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137 """
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138
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139 markup = """
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140 <html><head></head>
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141 <style>
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142 </style><script></script><body><p>hello</p></body></html>
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143 """
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144 soup = self.soup(markup)
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145 [s.extract() for s in soup('script')]
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146 [s.extract() for s in soup('style')]
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147
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148 self.assertEqual(len(soup.find_all("p")), 1)
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149
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150 def test_empty_comment(self):
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151 """
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152 Test that empty comment does not break structure.
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153
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154 https://bugs.launchpad.net/beautifulsoup/+bug/1806598
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155 """
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156
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157 markup = """
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158 <html>
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159 <body>
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160 <form>
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161 <!----><input type="text">
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162 </form>
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163 </body>
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164 </html>
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165 """
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166 soup = self.soup(markup)
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167 inputs = []
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168 for form in soup.find_all('form'):
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169 inputs.extend(form.find_all('input'))
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170 self.assertEqual(len(inputs), 1)
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171
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172 def test_tracking_line_numbers(self):
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173 # The html.parser TreeBuilder keeps track of line number and
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174 # position of each element.
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175 markup = "\n <p>\n\n<sourceline>\n<b>text</b></sourceline><sourcepos></p>"
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176 soup = self.soup(markup)
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177 self.assertEqual(2, soup.p.sourceline)
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178 self.assertEqual(5, soup.p.sourcepos)
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179 self.assertEqual("sourceline", soup.p.find('sourceline').name)
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180
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181 # You can deactivate this behavior.
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182 soup = self.soup(markup, store_line_numbers=False)
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183 self.assertEqual("sourceline", soup.p.sourceline.name)
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184 self.assertEqual("sourcepos", soup.p.sourcepos.name)
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185
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186 def test_special_string_containers(self):
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187 # The html5lib tree builder doesn't support this standard feature,
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188 # because there's no way of knowing, when a string is created,
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189 # where in the tree it will eventually end up.
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190 pass