Varia's website
https://varia.zone
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
98 lines
3.8 KiB
98 lines
3.8 KiB
2 weeks ago
|
"""Tests to ensure that the html.parser tree builder generates good
|
||
|
|
trees."""
|
||
|
|
|
||
|
|
from pdb import set_trace
|
||
|
|
import pickle
|
||
|
|
from bs4.testing import SoupTest, HTMLTreeBuilderSmokeTest
|
||
|
|
from bs4.builder import HTMLParserTreeBuilder
|
||
|
|
from bs4.builder._htmlparser import BeautifulSoupHTMLParser
|
||
|
|
|
||
|
|
class HTMLParserTreeBuilderSmokeTest(SoupTest, HTMLTreeBuilderSmokeTest):
|
||
|
|
|
||
|
|
default_builder = HTMLParserTreeBuilder
|
||
|
|
|
||
|
|
def test_namespaced_system_doctype(self):
|
||
|
|
# html.parser can't handle namespaced doctypes, so skip this one.
|
||
|
|
pass
|
||
|
|
|
||
|
|
def test_namespaced_public_doctype(self):
|
||
|
|
# html.parser can't handle namespaced doctypes, so skip this one.
|
||
|
|
pass
|
||
|
|
|
||
|
|
def test_builder_is_pickled(self):
|
||
|
|
"""Unlike most tree builders, HTMLParserTreeBuilder and will
|
||
|
|
be restored after pickling.
|
||
|
|
"""
|
||
|
|
tree = self.soup("<a><b>foo</a>")
|
||
|
|
dumped = pickle.dumps(tree, 2)
|
||
|
|
loaded = pickle.loads(dumped)
|
||
|
|
self.assertTrue(isinstance(loaded.builder, type(tree.builder)))
|
||
|
|
|
||
|
|
def test_redundant_empty_element_closing_tags(self):
|
||
|
|
self.assertSoupEquals('<br></br><br></br><br></br>', "<br/><br/><br/>")
|
||
|
|
self.assertSoupEquals('</br></br></br>', "")
|
||
|
|
|
||
|
|
def test_empty_element(self):
|
||
|
|
# This verifies that any buffered data present when the parser
|
||
|
|
# finishes working is handled.
|
||
|
|
self.assertSoupEquals("foo &# bar", "foo &# bar")
|
||
|
|
|
||
|
|
def test_tracking_line_numbers(self):
|
||
|
|
# The html.parser TreeBuilder keeps track of line number and
|
||
|
|
# position of each element.
|
||
|
|
markup = "\n <p>\n\n<sourceline>\n<b>text</b></sourceline><sourcepos></p>"
|
||
|
|
soup = self.soup(markup)
|
||
|
|
self.assertEqual(2, soup.p.sourceline)
|
||
|
|
self.assertEqual(3, soup.p.sourcepos)
|
||
|
|
self.assertEqual("sourceline", soup.p.find('sourceline').name)
|
||
|
|
|
||
|
|
# You can deactivate this behavior.
|
||
|
|
soup = self.soup(markup, store_line_numbers=False)
|
||
|
|
self.assertEqual("sourceline", soup.p.sourceline.name)
|
||
|
|
self.assertEqual("sourcepos", soup.p.sourcepos.name)
|
||
|
|
|
||
|
|
def test_on_duplicate_attribute(self):
|
||
|
|
# The html.parser tree builder has a variety of ways of
|
||
|
|
# handling a tag that contains the same attribute multiple times.
|
||
|
|
|
||
|
|
markup = '<a class="cls" href="url1" href="url2" href="url3" id="id">'
|
||
|
|
|
||
|
|
# If you don't provide any particular value for
|
||
|
|
# on_duplicate_attribute, later values replace earlier values.
|
||
|
|
soup = self.soup(markup)
|
||
|
|
self.assertEqual("url3", soup.a['href'])
|
||
|
|
self.assertEqual(["cls"], soup.a['class'])
|
||
|
|
self.assertEqual("id", soup.a['id'])
|
||
|
|
|
||
|
|
# You can also get this behavior explicitly.
|
||
|
|
def assert_attribute(on_duplicate_attribute, expected):
|
||
|
|
soup = self.soup(
|
||
|
|
markup, on_duplicate_attribute=on_duplicate_attribute
|
||
|
|
)
|
||
|
|
self.assertEqual(expected, soup.a['href'])
|
||
|
|
|
||
|
|
# Verify that non-duplicate attributes are treated normally.
|
||
|
|
self.assertEqual(["cls"], soup.a['class'])
|
||
|
|
self.assertEqual("id", soup.a['id'])
|
||
|
|
assert_attribute(None, "url3")
|
||
|
|
assert_attribute(BeautifulSoupHTMLParser.REPLACE, "url3")
|
||
|
|
|
||
|
|
# You can ignore subsequent values in favor of the first.
|
||
|
|
assert_attribute(BeautifulSoupHTMLParser.IGNORE, "url1")
|
||
|
|
|
||
|
|
# And you can pass in a callable that does whatever you want.
|
||
|
|
def accumulate(attrs, key, value):
|
||
|
|
if not isinstance(attrs[key], list):
|
||
|
|
attrs[key] = [attrs[key]]
|
||
|
|
attrs[key].append(value)
|
||
|
|
assert_attribute(accumulate, ["url1", "url2", "url3"])
|
||
|
|
|
||
|
|
|
||
|
|
class TestHTMLParserSubclass(SoupTest):
|
||
|
|
def test_error(self):
|
||
|
|
"""Verify that our HTMLParser subclass implements error() in a way
|
||
|
|
that doesn't cause a crash.
|
||
|
|
"""
|
||
|
|
parser = BeautifulSoupHTMLParser()
|
||
|
|
parser.error("don't crash")
|