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annotate planemo/lib/python3.7/site-packages/bs4/tests/test_htmlparser.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 html.parser tree builder generates good
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2 trees."""
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3
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4 from pdb import set_trace
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5 import pickle
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6 from bs4.testing import SoupTest, HTMLTreeBuilderSmokeTest
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7 from bs4.builder import HTMLParserTreeBuilder
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8 from bs4.builder._htmlparser import BeautifulSoupHTMLParser
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9
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10 class HTMLParserTreeBuilderSmokeTest(SoupTest, HTMLTreeBuilderSmokeTest):
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11
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12 default_builder = HTMLParserTreeBuilder
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13
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14 def test_namespaced_system_doctype(self):
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15 # html.parser can't handle namespaced doctypes, so skip this one.
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16 pass
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17
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18 def test_namespaced_public_doctype(self):
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19 # html.parser can't handle namespaced doctypes, so skip this one.
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20 pass
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21
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22 def test_builder_is_pickled(self):
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23 """Unlike most tree builders, HTMLParserTreeBuilder and will
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24 be restored after pickling.
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25 """
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26 tree = self.soup("<a><b>foo</a>")
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27 dumped = pickle.dumps(tree, 2)
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28 loaded = pickle.loads(dumped)
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29 self.assertTrue(isinstance(loaded.builder, type(tree.builder)))
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30
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31 def test_redundant_empty_element_closing_tags(self):
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32 self.assertSoupEquals('<br></br><br></br><br></br>', "<br/><br/><br/>")
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33 self.assertSoupEquals('</br></br></br>', "")
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34
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35 def test_empty_element(self):
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36 # This verifies that any buffered data present when the parser
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37 # finishes working is handled.
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38 self.assertSoupEquals("foo &# bar", "foo &amp;# bar")
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39
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40 def test_tracking_line_numbers(self):
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41 # The html.parser TreeBuilder keeps track of line number and
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42 # position of each element.
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43 markup = "\n <p>\n\n<sourceline>\n<b>text</b></sourceline><sourcepos></p>"
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44 soup = self.soup(markup)
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45 self.assertEqual(2, soup.p.sourceline)
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46 self.assertEqual(3, soup.p.sourcepos)
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47 self.assertEqual("sourceline", soup.p.find('sourceline').name)
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48
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49 # You can deactivate this behavior.
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50 soup = self.soup(markup, store_line_numbers=False)
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51 self.assertEqual("sourceline", soup.p.sourceline.name)
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52 self.assertEqual("sourcepos", soup.p.sourcepos.name)
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53
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54 def test_on_duplicate_attribute(self):
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55 # The html.parser tree builder has a variety of ways of
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56 # handling a tag that contains the same attribute multiple times.
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57
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58 markup = '<a class="cls" href="url1" href="url2" href="url3" id="id">'
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59
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60 # If you don't provide any particular value for
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61 # on_duplicate_attribute, later values replace earlier values.
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62 soup = self.soup(markup)
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63 self.assertEqual("url3", soup.a['href'])
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64 self.assertEqual(["cls"], soup.a['class'])
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65 self.assertEqual("id", soup.a['id'])
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66
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67 # You can also get this behavior explicitly.
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68 def assert_attribute(on_duplicate_attribute, expected):
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69 soup = self.soup(
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70 markup, on_duplicate_attribute=on_duplicate_attribute
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71 )
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72 self.assertEqual(expected, soup.a['href'])
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73
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74 # Verify that non-duplicate attributes are treated normally.
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75 self.assertEqual(["cls"], soup.a['class'])
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76 self.assertEqual("id", soup.a['id'])
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77 assert_attribute(None, "url3")
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78 assert_attribute(BeautifulSoupHTMLParser.REPLACE, "url3")
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79
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80 # You can ignore subsequent values in favor of the first.
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81 assert_attribute(BeautifulSoupHTMLParser.IGNORE, "url1")
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82
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83 # And you can pass in a callable that does whatever you want.
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84 def accumulate(attrs, key, value):
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85 if not isinstance(attrs[key], list):
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86 attrs[key] = [attrs[key]]
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87 attrs[key].append(value)
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88 assert_attribute(accumulate, ["url1", "url2", "url3"])
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89
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90
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91 class TestHTMLParserSubclass(SoupTest):
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92 def test_error(self):
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93 """Verify that our HTMLParser subclass implements error() in a way
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94 that doesn't cause a crash.
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95 """
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96 parser = BeautifulSoupHTMLParser()
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97 parser.error("don't crash")