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annotate planemo/lib/python3.7/site-packages/bs4/tests/test_lxml.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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1 """Tests to ensure that the lxml tree builder generates good trees."""
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2
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3 import re
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4 import warnings
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5
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6 try:
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7 import lxml.etree
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8 LXML_PRESENT = True
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9 LXML_VERSION = lxml.etree.LXML_VERSION
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10 except ImportError as e:
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11 LXML_PRESENT = False
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12 LXML_VERSION = (0,)
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13
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14 if LXML_PRESENT:
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15 from bs4.builder import LXMLTreeBuilder, LXMLTreeBuilderForXML
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16
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17 from bs4 import (
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18 BeautifulSoup,
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19 BeautifulStoneSoup,
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20 )
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21 from bs4.element import Comment, Doctype, SoupStrainer
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22 from bs4.testing import skipIf
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23 from bs4.tests import test_htmlparser
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24 from bs4.testing import (
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25 HTMLTreeBuilderSmokeTest,
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26 XMLTreeBuilderSmokeTest,
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27 SoupTest,
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28 skipIf,
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29 )
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30
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31 @skipIf(
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32 not LXML_PRESENT,
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33 "lxml seems not to be present, not testing its tree builder.")
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34 class LXMLTreeBuilderSmokeTest(SoupTest, HTMLTreeBuilderSmokeTest):
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35 """See ``HTMLTreeBuilderSmokeTest``."""
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36
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37 @property
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38 def default_builder(self):
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39 return LXMLTreeBuilder
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40
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41 def test_out_of_range_entity(self):
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42 self.assertSoupEquals(
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43 "<p>foo&#10000000000000;bar</p>", "<p>foobar</p>")
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44 self.assertSoupEquals(
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45 "<p>foo&#x10000000000000;bar</p>", "<p>foobar</p>")
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46 self.assertSoupEquals(
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47 "<p>foo&#1000000000;bar</p>", "<p>foobar</p>")
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48
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49 def test_entities_in_foreign_document_encoding(self):
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50 # We can't implement this case correctly because by the time we
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51 # hear about markup like "&#147;", it's been (incorrectly) converted into
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52 # a string like u'\x93'
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53 pass
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54
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55 # In lxml < 2.3.5, an empty doctype causes a segfault. Skip this
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56 # test if an old version of lxml is installed.
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57
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58 @skipIf(
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59 not LXML_PRESENT or LXML_VERSION < (2,3,5,0),
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60 "Skipping doctype test for old version of lxml to avoid segfault.")
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61 def test_empty_doctype(self):
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62 soup = self.soup("<!DOCTYPE>")
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63 doctype = soup.contents[0]
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64 self.assertEqual("", doctype.strip())
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65
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66 def test_beautifulstonesoup_is_xml_parser(self):
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67 # Make sure that the deprecated BSS class uses an xml builder
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68 # if one is installed.
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69 with warnings.catch_warnings(record=True) as w:
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70 soup = BeautifulStoneSoup("<b />")
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71 self.assertEqual("<b/>", str(soup.b))
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72 self.assertTrue("BeautifulStoneSoup class is deprecated" in str(w[0].message))
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73
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74 def test_tracking_line_numbers(self):
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75 # The lxml TreeBuilder cannot keep track of line numbers from
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76 # the original markup. Even if you ask for line numbers, we
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77 # don't have 'em.
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78 #
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79 # This means that if you have a tag like <sourceline> or
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80 # <sourcepos>, attribute access will find it rather than
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81 # giving you a numeric answer.
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82 soup = self.soup(
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83 "\n <p>\n\n<sourceline>\n<b>text</b></sourceline><sourcepos></p>",
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84 store_line_numbers=True
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85 )
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86 self.assertEqual("sourceline", soup.p.sourceline.name)
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87 self.assertEqual("sourcepos", soup.p.sourcepos.name)
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88
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89 @skipIf(
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90 not LXML_PRESENT,
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91 "lxml seems not to be present, not testing its XML tree builder.")
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92 class LXMLXMLTreeBuilderSmokeTest(SoupTest, XMLTreeBuilderSmokeTest):
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93 """See ``HTMLTreeBuilderSmokeTest``."""
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94
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95 @property
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96 def default_builder(self):
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97 return LXMLTreeBuilderForXML
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98
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99 def test_namespace_indexing(self):
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100 # We should not track un-prefixed namespaces as we can only hold one
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101 # and it will be recognized as the default namespace by soupsieve,
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102 # which may be confusing in some situations. When no namespace is provided
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103 # for a selector, the default namespace (if defined) is assumed.
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104
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105 soup = self.soup(
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106 '<?xml version="1.1"?>\n'
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107 '<root>'
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108 '<tag xmlns="http://unprefixed-namespace.com">content</tag>'
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109 '<prefix:tag xmlns:prefix="http://prefixed-namespace.com">content</tag>'
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110 '</root>'
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111 )
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112 self.assertEqual(
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113 soup._namespaces,
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114 {'xml': 'http://www.w3.org/XML/1998/namespace', 'prefix': 'http://prefixed-namespace.com'}
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115 )