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1035 lines
42 KiB
Python
1035 lines
42 KiB
Python
# encoding: utf-8
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"""Helper classes for tests."""
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# Use of this source code is governed by the MIT license.
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__license__ = "MIT"
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import pickle
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import copy
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import functools
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import unittest
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from unittest import TestCase
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from bs4 import BeautifulSoup
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from bs4.element import (
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CharsetMetaAttributeValue,
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Comment,
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ContentMetaAttributeValue,
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Doctype,
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SoupStrainer,
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Script,
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Stylesheet,
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Tag
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)
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from bs4.builder import HTMLParserTreeBuilder
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default_builder = HTMLParserTreeBuilder
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BAD_DOCUMENT = """A bare string
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<!DOCTYPE xsl:stylesheet SYSTEM "htmlent.dtd">
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<!DOCTYPE xsl:stylesheet PUBLIC "htmlent.dtd">
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<div><![CDATA[A CDATA section where it doesn't belong]]></div>
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<div><svg><![CDATA[HTML5 does allow CDATA sections in SVG]]></svg></div>
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<div>A <meta> tag</div>
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<div>A <br> tag that supposedly has contents.</br></div>
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<div>AT&T</div>
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<div><textarea>Within a textarea, markup like <b> tags and <&<& should be treated as literal</textarea></div>
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<div><script>if (i < 2) { alert("<b>Markup within script tags should be treated as literal.</b>"); }</script></div>
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<div>This numeric entity is missing the final semicolon: <x t="piñata"></div>
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<div><a href="http://example.com/</a> that attribute value never got closed</div>
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<div><a href="foo</a>, </a><a href="bar">that attribute value was closed by the subsequent tag</a></div>
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<! This document starts with a bogus declaration ><div>a</div>
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<div>This document contains <!an incomplete declaration <div>(do you see it?)</div>
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<div>This document ends with <!an incomplete declaration
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<div><a style={height:21px;}>That attribute value was bogus</a></div>
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<! DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN">The doctype is invalid because it contains extra whitespace
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<div><table><td nowrap>That boolean attribute had no value</td></table></div>
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<div>Here's a nonexistent entity: &#foo; (do you see it?)</div>
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<div>This document ends before the entity finishes: >
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<div><p>Paragraphs shouldn't contain block display elements, but this one does: <dl><dt>you see?</dt></p>
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<b b="20" a="1" b="10" a="2" a="3" a="4">Multiple values for the same attribute.</b>
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<div><table><tr><td>Here's a table</td></tr></table></div>
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<div><table id="1"><tr><td>Here's a nested table:<table id="2"><tr><td>foo</td></tr></table></td></div>
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<div>This tag contains nothing but whitespace: <b> </b></div>
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<div><blockquote><p><b>This p tag is cut off by</blockquote></p>the end of the blockquote tag</div>
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<div><table><div>This table contains bare markup</div></table></div>
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<div><div id="1">\n <a href="link1">This link is never closed.\n</div>\n<div id="2">\n <div id="3">\n <a href="link2">This link is closed.</a>\n </div>\n</div></div>
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<div>This document contains a <!DOCTYPE surprise>surprise doctype</div>
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<div><a><B><Cd><EFG>Mixed case tags are folded to lowercase</efg></CD></b></A></div>
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<div><our\u2603>Tag name contains Unicode characters</our\u2603></div>
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<div><a \u2603="snowman">Attribute name contains Unicode characters</a></div>
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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
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"""
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class SoupTest(unittest.TestCase):
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@property
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def default_builder(self):
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return default_builder
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def soup(self, markup, **kwargs):
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"""Build a Beautiful Soup object from markup."""
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builder = kwargs.pop('builder', self.default_builder)
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return BeautifulSoup(markup, builder=builder, **kwargs)
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def document_for(self, markup, **kwargs):
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"""Turn an HTML fragment into a document.
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The details depend on the builder.
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"""
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return self.default_builder(**kwargs).test_fragment_to_document(markup)
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def assertSoupEquals(self, to_parse, compare_parsed_to=None):
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builder = self.default_builder
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obj = BeautifulSoup(to_parse, builder=builder)
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if compare_parsed_to is None:
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compare_parsed_to = to_parse
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self.assertEqual(obj.decode(), self.document_for(compare_parsed_to))
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def assertConnectedness(self, element):
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"""Ensure that next_element and previous_element are properly
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set for all descendants of the given element.
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"""
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earlier = None
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for e in element.descendants:
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if earlier:
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self.assertEqual(e, earlier.next_element)
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self.assertEqual(earlier, e.previous_element)
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earlier = e
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def linkage_validator(self, el, _recursive_call=False):
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"""Ensure proper linkage throughout the document."""
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descendant = None
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# Document element should have no previous element or previous sibling.
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# It also shouldn't have a next sibling.
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if el.parent is None:
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assert el.previous_element is None,\
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"Bad previous_element\nNODE: {}\nPREV: {}\nEXPECTED: {}".format(
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el, el.previous_element, None
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)
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assert el.previous_sibling is None,\
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"Bad previous_sibling\nNODE: {}\nPREV: {}\nEXPECTED: {}".format(
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el, el.previous_sibling, None
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)
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assert el.next_sibling is None,\
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"Bad next_sibling\nNODE: {}\nNEXT: {}\nEXPECTED: {}".format(
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el, el.next_sibling, None
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)
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idx = 0
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child = None
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last_child = None
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last_idx = len(el.contents) - 1
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for child in el.contents:
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descendant = None
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# Parent should link next element to their first child
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# That child should have no previous sibling
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if idx == 0:
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if el.parent is not None:
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assert el.next_element is child,\
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"Bad next_element\nNODE: {}\nNEXT: {}\nEXPECTED: {}".format(
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el, el.next_element, child
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)
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assert child.previous_element is el,\
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"Bad previous_element\nNODE: {}\nPREV: {}\nEXPECTED: {}".format(
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child, child.previous_element, el
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)
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assert child.previous_sibling is None,\
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"Bad previous_sibling\nNODE: {}\nPREV {}\nEXPECTED: {}".format(
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child, child.previous_sibling, None
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)
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# If not the first child, previous index should link as sibling to this index
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# Previous element should match the last index or the last bubbled up descendant
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else:
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assert child.previous_sibling is el.contents[idx - 1],\
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"Bad previous_sibling\nNODE: {}\nPREV {}\nEXPECTED {}".format(
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child, child.previous_sibling, el.contents[idx - 1]
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)
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assert el.contents[idx - 1].next_sibling is child,\
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"Bad next_sibling\nNODE: {}\nNEXT {}\nEXPECTED {}".format(
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el.contents[idx - 1], el.contents[idx - 1].next_sibling, child
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)
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if last_child is not None:
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assert child.previous_element is last_child,\
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"Bad previous_element\nNODE: {}\nPREV {}\nEXPECTED {}\nCONTENTS {}".format(
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child, child.previous_element, last_child, child.parent.contents
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)
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assert last_child.next_element is child,\
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"Bad next_element\nNODE: {}\nNEXT {}\nEXPECTED {}".format(
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last_child, last_child.next_element, child
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)
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if isinstance(child, Tag) and child.contents:
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descendant = self.linkage_validator(child, True)
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# A bubbled up descendant should have no next siblings
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assert descendant.next_sibling is None,\
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"Bad next_sibling\nNODE: {}\nNEXT {}\nEXPECTED {}".format(
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descendant, descendant.next_sibling, None
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)
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# Mark last child as either the bubbled up descendant or the current child
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if descendant is not None:
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last_child = descendant
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else:
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last_child = child
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# If last child, there are non next siblings
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if idx == last_idx:
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assert child.next_sibling is None,\
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"Bad next_sibling\nNODE: {}\nNEXT {}\nEXPECTED {}".format(
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child, child.next_sibling, None
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)
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idx += 1
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child = descendant if descendant is not None else child
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if child is None:
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child = el
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if not _recursive_call and child is not None:
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target = el
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while True:
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if target is None:
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assert child.next_element is None, \
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"Bad next_element\nNODE: {}\nNEXT {}\nEXPECTED {}".format(
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child, child.next_element, None
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)
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break
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elif target.next_sibling is not None:
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assert child.next_element is target.next_sibling, \
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"Bad next_element\nNODE: {}\nNEXT {}\nEXPECTED {}".format(
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child, child.next_element, target.next_sibling
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)
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break
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target = target.parent
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# We are done, so nothing to return
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return None
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else:
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# Return the child to the recursive caller
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return child
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class HTMLTreeBuilderSmokeTest(object):
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"""A basic test of a treebuilder's competence.
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Any HTML treebuilder, present or future, should be able to pass
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these tests. With invalid markup, there's room for interpretation,
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and different parsers can handle it differently. But with the
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markup in these tests, there's not much room for interpretation.
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"""
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def test_empty_element_tags(self):
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"""Verify that all HTML4 and HTML5 empty element (aka void element) tags
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are handled correctly.
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"""
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for name in [
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'area', 'base', 'br', 'col', 'embed', 'hr', 'img', 'input', 'keygen', 'link', 'menuitem', 'meta', 'param', 'source', 'track', 'wbr',
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'spacer', 'frame'
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]:
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soup = self.soup("")
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new_tag = soup.new_tag(name)
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self.assertEqual(True, new_tag.is_empty_element)
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def test_special_string_containers(self):
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soup = self.soup(
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"<style>Some CSS</style><script>Some Javascript</script>"
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)
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assert isinstance(soup.style.string, Stylesheet)
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assert isinstance(soup.script.string, Script)
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soup = self.soup(
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"<style><!--Some CSS--></style>"
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)
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assert isinstance(soup.style.string, Stylesheet)
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# The contents of the style tag resemble an HTML comment, but
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# it's not treated as a comment.
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self.assertEqual("<!--Some CSS-->", soup.style.string)
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assert isinstance(soup.style.string, Stylesheet)
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def test_pickle_and_unpickle_identity(self):
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# Pickling a tree, then unpickling it, yields a tree identical
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# to the original.
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tree = self.soup("<a><b>foo</a>")
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dumped = pickle.dumps(tree, 2)
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loaded = pickle.loads(dumped)
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self.assertEqual(loaded.__class__, BeautifulSoup)
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self.assertEqual(loaded.decode(), tree.decode())
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def assertDoctypeHandled(self, doctype_fragment):
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"""Assert that a given doctype string is handled correctly."""
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doctype_str, soup = self._document_with_doctype(doctype_fragment)
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# Make sure a Doctype object was created.
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doctype = soup.contents[0]
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self.assertEqual(doctype.__class__, Doctype)
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self.assertEqual(doctype, doctype_fragment)
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self.assertEqual(
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soup.encode("utf8")[:len(doctype_str)],
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doctype_str
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)
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# Make sure that the doctype was correctly associated with the
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# parse tree and that the rest of the document parsed.
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self.assertEqual(soup.p.contents[0], 'foo')
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def _document_with_doctype(self, doctype_fragment, doctype_string="DOCTYPE"):
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"""Generate and parse a document with the given doctype."""
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doctype = '<!%s %s>' % (doctype_string, doctype_fragment)
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markup = doctype + '\n<p>foo</p>'
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soup = self.soup(markup)
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return doctype.encode("utf8"), soup
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def test_normal_doctypes(self):
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"""Make sure normal, everyday HTML doctypes are handled correctly."""
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self.assertDoctypeHandled("html")
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self.assertDoctypeHandled(
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'html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"')
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def test_empty_doctype(self):
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soup = self.soup("<!DOCTYPE>")
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doctype = soup.contents[0]
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self.assertEqual("", doctype.strip())
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def test_mixed_case_doctype(self):
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# A lowercase or mixed-case doctype becomes a Doctype.
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for doctype_fragment in ("doctype", "DocType"):
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doctype_str, soup = self._document_with_doctype(
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"html", doctype_fragment
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)
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# Make sure a Doctype object was created and that the DOCTYPE
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# is uppercase.
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doctype = soup.contents[0]
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self.assertEqual(doctype.__class__, Doctype)
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self.assertEqual(doctype, "html")
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self.assertEqual(
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soup.encode("utf8")[:len(doctype_str)],
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b"<!DOCTYPE html>"
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)
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# Make sure that the doctype was correctly associated with the
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# parse tree and that the rest of the document parsed.
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self.assertEqual(soup.p.contents[0], 'foo')
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def test_public_doctype_with_url(self):
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doctype = 'html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"'
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self.assertDoctypeHandled(doctype)
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def test_system_doctype(self):
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self.assertDoctypeHandled('foo SYSTEM "http://www.example.com/"')
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def test_namespaced_system_doctype(self):
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# We can handle a namespaced doctype with a system ID.
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self.assertDoctypeHandled('xsl:stylesheet SYSTEM "htmlent.dtd"')
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def test_namespaced_public_doctype(self):
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# Test a namespaced doctype with a public id.
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self.assertDoctypeHandled('xsl:stylesheet PUBLIC "htmlent.dtd"')
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def test_real_xhtml_document(self):
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"""A real XHTML document should come out more or less the same as it went in."""
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markup = b"""<?xml version="1.0" encoding="utf-8"?>
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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN">
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<html xmlns="http://www.w3.org/1999/xhtml">
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<head><title>Hello.</title></head>
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<body>Goodbye.</body>
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</html>"""
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soup = self.soup(markup)
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self.assertEqual(
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soup.encode("utf-8").replace(b"\n", b""),
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markup.replace(b"\n", b""))
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def test_namespaced_html(self):
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"""When a namespaced XML document is parsed as HTML it should
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be treated as HTML with weird tag names.
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"""
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markup = b"""<ns1:foo>content</ns1:foo><ns1:foo/><ns2:foo/>"""
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soup = self.soup(markup)
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self.assertEqual(2, len(soup.find_all("ns1:foo")))
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def test_processing_instruction(self):
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# We test both Unicode and bytestring to verify that
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# process_markup correctly sets processing_instruction_class
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# even when the markup is already Unicode and there is no
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# need to process anything.
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markup = """<?PITarget PIContent?>"""
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soup = self.soup(markup)
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self.assertEqual(markup, soup.decode())
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markup = b"""<?PITarget PIContent?>"""
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soup = self.soup(markup)
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self.assertEqual(markup, soup.encode("utf8"))
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def test_deepcopy(self):
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"""Make sure you can copy the tree builder.
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This is important because the builder is part of a
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BeautifulSoup object, and we want to be able to copy that.
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"""
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copy.deepcopy(self.default_builder)
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def test_p_tag_is_never_empty_element(self):
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"""A <p> tag is never designated as an empty-element tag.
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Even if the markup shows it as an empty-element tag, it
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shouldn't be presented that way.
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"""
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soup = self.soup("<p/>")
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self.assertFalse(soup.p.is_empty_element)
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self.assertEqual(str(soup.p), "<p></p>")
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def test_unclosed_tags_get_closed(self):
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"""A tag that's not closed by the end of the document should be closed.
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This applies to all tags except empty-element tags.
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"""
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self.assertSoupEquals("<p>", "<p></p>")
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self.assertSoupEquals("<b>", "<b></b>")
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self.assertSoupEquals("<br>", "<br/>")
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def test_br_is_always_empty_element_tag(self):
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"""A <br> tag is designated as an empty-element tag.
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Some parsers treat <br></br> as one <br/> tag, some parsers as
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two tags, but it should always be an empty-element tag.
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"""
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soup = self.soup("<br></br>")
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self.assertTrue(soup.br.is_empty_element)
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self.assertEqual(str(soup.br), "<br/>")
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def test_nested_formatting_elements(self):
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self.assertSoupEquals("<em><em></em></em>")
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def test_double_head(self):
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html = '''<!DOCTYPE html>
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<html>
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<head>
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<title>Ordinary HEAD element test</title>
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</head>
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<script type="text/javascript">
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alert("Help!");
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</script>
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<body>
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Hello, world!
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</body>
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</html>
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'''
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soup = self.soup(html)
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self.assertEqual("text/javascript", soup.find('script')['type'])
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def test_comment(self):
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# Comments are represented as Comment objects.
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markup = "<p>foo<!--foobar-->baz</p>"
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self.assertSoupEquals(markup)
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soup = self.soup(markup)
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comment = soup.find(text="foobar")
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self.assertEqual(comment.__class__, Comment)
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# The comment is properly integrated into the tree.
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foo = soup.find(text="foo")
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self.assertEqual(comment, foo.next_element)
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baz = soup.find(text="baz")
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self.assertEqual(comment, baz.previous_element)
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def test_preserved_whitespace_in_pre_and_textarea(self):
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"""Whitespace must be preserved in <pre> and <textarea> tags,
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even if that would mean not prettifying the markup.
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"""
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pre_markup = "<pre> </pre>"
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textarea_markup = "<textarea> woo\nwoo </textarea>"
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self.assertSoupEquals(pre_markup)
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self.assertSoupEquals(textarea_markup)
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soup = self.soup(pre_markup)
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self.assertEqual(soup.pre.prettify(), pre_markup)
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soup = self.soup(textarea_markup)
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self.assertEqual(soup.textarea.prettify(), textarea_markup)
|
|
|
|
soup = self.soup("<textarea></textarea>")
|
|
self.assertEqual(soup.textarea.prettify(), "<textarea></textarea>")
|
|
|
|
def test_nested_inline_elements(self):
|
|
"""Inline elements can be nested indefinitely."""
|
|
b_tag = "<b>Inside a B tag</b>"
|
|
self.assertSoupEquals(b_tag)
|
|
|
|
nested_b_tag = "<p>A <i>nested <b>tag</b></i></p>"
|
|
self.assertSoupEquals(nested_b_tag)
|
|
|
|
double_nested_b_tag = "<p>A <a>doubly <i>nested <b>tag</b></i></a></p>"
|
|
self.assertSoupEquals(nested_b_tag)
|
|
|
|
def test_nested_block_level_elements(self):
|
|
"""Block elements can be nested."""
|
|
soup = self.soup('<blockquote><p><b>Foo</b></p></blockquote>')
|
|
blockquote = soup.blockquote
|
|
self.assertEqual(blockquote.p.b.string, 'Foo')
|
|
self.assertEqual(blockquote.b.string, 'Foo')
|
|
|
|
def test_correctly_nested_tables(self):
|
|
"""One table can go inside another one."""
|
|
markup = ('<table id="1">'
|
|
'<tr>'
|
|
"<td>Here's another table:"
|
|
'<table id="2">'
|
|
'<tr><td>foo</td></tr>'
|
|
'</table></td>')
|
|
|
|
self.assertSoupEquals(
|
|
markup,
|
|
'<table id="1"><tr><td>Here\'s another table:'
|
|
'<table id="2"><tr><td>foo</td></tr></table>'
|
|
'</td></tr></table>')
|
|
|
|
self.assertSoupEquals(
|
|
"<table><thead><tr><td>Foo</td></tr></thead>"
|
|
"<tbody><tr><td>Bar</td></tr></tbody>"
|
|
"<tfoot><tr><td>Baz</td></tr></tfoot></table>")
|
|
|
|
def test_multivalued_attribute_with_whitespace(self):
|
|
# Whitespace separating the values of a multi-valued attribute
|
|
# should be ignored.
|
|
|
|
markup = '<div class=" foo bar "></a>'
|
|
soup = self.soup(markup)
|
|
self.assertEqual(['foo', 'bar'], soup.div['class'])
|
|
|
|
# If you search by the literal name of the class it's like the whitespace
|
|
# wasn't there.
|
|
self.assertEqual(soup.div, soup.find('div', class_="foo bar"))
|
|
|
|
def test_deeply_nested_multivalued_attribute(self):
|
|
# html5lib can set the attributes of the same tag many times
|
|
# as it rearranges the tree. This has caused problems with
|
|
# multivalued attributes.
|
|
markup = '<table><div><div class="css"></div></div></table>'
|
|
soup = self.soup(markup)
|
|
self.assertEqual(["css"], soup.div.div['class'])
|
|
|
|
def test_multivalued_attribute_on_html(self):
|
|
# html5lib uses a different API to set the attributes ot the
|
|
# <html> tag. This has caused problems with multivalued
|
|
# attributes.
|
|
markup = '<html class="a b"></html>'
|
|
soup = self.soup(markup)
|
|
self.assertEqual(["a", "b"], soup.html['class'])
|
|
|
|
def test_angle_brackets_in_attribute_values_are_escaped(self):
|
|
self.assertSoupEquals('<a b="<a>"></a>', '<a b="<a>"></a>')
|
|
|
|
def test_strings_resembling_character_entity_references(self):
|
|
# "&T" and "&p" look like incomplete character entities, but they are
|
|
# not.
|
|
self.assertSoupEquals(
|
|
"<p>• AT&T is in the s&p 500</p>",
|
|
"<p>\u2022 AT&T is in the s&p 500</p>"
|
|
)
|
|
|
|
def test_apos_entity(self):
|
|
self.assertSoupEquals(
|
|
"<p>Bob's Bar</p>",
|
|
"<p>Bob's Bar</p>",
|
|
)
|
|
|
|
def test_entities_in_foreign_document_encoding(self):
|
|
# “ and ” are invalid numeric entities referencing
|
|
# Windows-1252 characters. - references a character common
|
|
# to Windows-1252 and Unicode, and ☃ references a
|
|
# character only found in Unicode.
|
|
#
|
|
# All of these entities should be converted to Unicode
|
|
# characters.
|
|
markup = "<p>“Hello” -☃</p>"
|
|
soup = self.soup(markup)
|
|
self.assertEqual("“Hello” -☃", soup.p.string)
|
|
|
|
def test_entities_in_attributes_converted_to_unicode(self):
|
|
expect = '<p id="pi\N{LATIN SMALL LETTER N WITH TILDE}ata"></p>'
|
|
self.assertSoupEquals('<p id="piñata"></p>', expect)
|
|
self.assertSoupEquals('<p id="piñata"></p>', expect)
|
|
self.assertSoupEquals('<p id="piñata"></p>', expect)
|
|
self.assertSoupEquals('<p id="piñata"></p>', expect)
|
|
|
|
def test_entities_in_text_converted_to_unicode(self):
|
|
expect = '<p>pi\N{LATIN SMALL LETTER N WITH TILDE}ata</p>'
|
|
self.assertSoupEquals("<p>piñata</p>", expect)
|
|
self.assertSoupEquals("<p>piñata</p>", expect)
|
|
self.assertSoupEquals("<p>piñata</p>", expect)
|
|
self.assertSoupEquals("<p>piñata</p>", expect)
|
|
|
|
def test_quot_entity_converted_to_quotation_mark(self):
|
|
self.assertSoupEquals("<p>I said "good day!"</p>",
|
|
'<p>I said "good day!"</p>')
|
|
|
|
def test_out_of_range_entity(self):
|
|
expect = "\N{REPLACEMENT CHARACTER}"
|
|
self.assertSoupEquals("�", expect)
|
|
self.assertSoupEquals("�", expect)
|
|
self.assertSoupEquals("�", expect)
|
|
|
|
def test_multipart_strings(self):
|
|
"Mostly to prevent a recurrence of a bug in the html5lib treebuilder."
|
|
soup = self.soup("<html><h2>\nfoo</h2><p></p></html>")
|
|
self.assertEqual("p", soup.h2.string.next_element.name)
|
|
self.assertEqual("p", soup.p.name)
|
|
self.assertConnectedness(soup)
|
|
|
|
def test_empty_element_tags(self):
|
|
"""Verify consistent handling of empty-element tags,
|
|
no matter how they come in through the markup.
|
|
"""
|
|
self.assertSoupEquals('<br/><br/><br/>', "<br/><br/><br/>")
|
|
self.assertSoupEquals('<br /><br /><br />', "<br/><br/><br/>")
|
|
|
|
def test_head_tag_between_head_and_body(self):
|
|
"Prevent recurrence of a bug in the html5lib treebuilder."
|
|
content = """<html><head></head>
|
|
<link></link>
|
|
<body>foo</body>
|
|
</html>
|
|
"""
|
|
soup = self.soup(content)
|
|
self.assertNotEqual(None, soup.html.body)
|
|
self.assertConnectedness(soup)
|
|
|
|
def test_multiple_copies_of_a_tag(self):
|
|
"Prevent recurrence of a bug in the html5lib treebuilder."
|
|
content = """<!DOCTYPE html>
|
|
<html>
|
|
<body>
|
|
<article id="a" >
|
|
<div><a href="1"></div>
|
|
<footer>
|
|
<a href="2"></a>
|
|
</footer>
|
|
</article>
|
|
</body>
|
|
</html>
|
|
"""
|
|
soup = self.soup(content)
|
|
self.assertConnectedness(soup.article)
|
|
|
|
def test_basic_namespaces(self):
|
|
"""Parsers don't need to *understand* namespaces, but at the
|
|
very least they should not choke on namespaces or lose
|
|
data."""
|
|
|
|
markup = b'<html xmlns="http://www.w3.org/1999/xhtml" xmlns:mathml="http://www.w3.org/1998/Math/MathML" xmlns:svg="http://www.w3.org/2000/svg"><head></head><body><mathml:msqrt>4</mathml:msqrt><b svg:fill="red"></b></body></html>'
|
|
soup = self.soup(markup)
|
|
self.assertEqual(markup, soup.encode())
|
|
html = soup.html
|
|
self.assertEqual('http://www.w3.org/1999/xhtml', soup.html['xmlns'])
|
|
self.assertEqual(
|
|
'http://www.w3.org/1998/Math/MathML', soup.html['xmlns:mathml'])
|
|
self.assertEqual(
|
|
'http://www.w3.org/2000/svg', soup.html['xmlns:svg'])
|
|
|
|
def test_multivalued_attribute_value_becomes_list(self):
|
|
markup = b'<a class="foo bar">'
|
|
soup = self.soup(markup)
|
|
self.assertEqual(['foo', 'bar'], soup.a['class'])
|
|
|
|
#
|
|
# Generally speaking, tests below this point are more tests of
|
|
# Beautiful Soup than tests of the tree builders. But parsers are
|
|
# weird, so we run these tests separately for every tree builder
|
|
# to detect any differences between them.
|
|
#
|
|
|
|
def test_can_parse_unicode_document(self):
|
|
# A seemingly innocuous document... but it's in Unicode! And
|
|
# it contains characters that can't be represented in the
|
|
# encoding found in the declaration! The horror!
|
|
markup = '<html><head><meta encoding="euc-jp"></head><body>Sacr\N{LATIN SMALL LETTER E WITH ACUTE} bleu!</body>'
|
|
soup = self.soup(markup)
|
|
self.assertEqual('Sacr\xe9 bleu!', soup.body.string)
|
|
|
|
def test_soupstrainer(self):
|
|
"""Parsers should be able to work with SoupStrainers."""
|
|
strainer = SoupStrainer("b")
|
|
soup = self.soup("A <b>bold</b> <meta/> <i>statement</i>",
|
|
parse_only=strainer)
|
|
self.assertEqual(soup.decode(), "<b>bold</b>")
|
|
|
|
def test_single_quote_attribute_values_become_double_quotes(self):
|
|
self.assertSoupEquals("<foo attr='bar'></foo>",
|
|
'<foo attr="bar"></foo>')
|
|
|
|
def test_attribute_values_with_nested_quotes_are_left_alone(self):
|
|
text = """<foo attr='bar "brawls" happen'>a</foo>"""
|
|
self.assertSoupEquals(text)
|
|
|
|
def test_attribute_values_with_double_nested_quotes_get_quoted(self):
|
|
text = """<foo attr='bar "brawls" happen'>a</foo>"""
|
|
soup = self.soup(text)
|
|
soup.foo['attr'] = 'Brawls happen at "Bob\'s Bar"'
|
|
self.assertSoupEquals(
|
|
soup.foo.decode(),
|
|
"""<foo attr="Brawls happen at "Bob\'s Bar"">a</foo>""")
|
|
|
|
def test_ampersand_in_attribute_value_gets_escaped(self):
|
|
self.assertSoupEquals('<this is="really messed up & stuff"></this>',
|
|
'<this is="really messed up & stuff"></this>')
|
|
|
|
self.assertSoupEquals(
|
|
'<a href="http://example.org?a=1&b=2;3">foo</a>',
|
|
'<a href="http://example.org?a=1&b=2;3">foo</a>')
|
|
|
|
def test_escaped_ampersand_in_attribute_value_is_left_alone(self):
|
|
self.assertSoupEquals('<a href="http://example.org?a=1&b=2;3"></a>')
|
|
|
|
def test_entities_in_strings_converted_during_parsing(self):
|
|
# Both XML and HTML entities are converted to Unicode characters
|
|
# during parsing.
|
|
text = "<p><<sacré bleu!>></p>"
|
|
expected = "<p><<sacr\N{LATIN SMALL LETTER E WITH ACUTE} bleu!>></p>"
|
|
self.assertSoupEquals(text, expected)
|
|
|
|
def test_smart_quotes_converted_on_the_way_in(self):
|
|
# Microsoft smart quotes are converted to Unicode characters during
|
|
# parsing.
|
|
quote = b"<p>\x91Foo\x92</p>"
|
|
soup = self.soup(quote)
|
|
self.assertEqual(
|
|
soup.p.string,
|
|
"\N{LEFT SINGLE QUOTATION MARK}Foo\N{RIGHT SINGLE QUOTATION MARK}")
|
|
|
|
def test_non_breaking_spaces_converted_on_the_way_in(self):
|
|
soup = self.soup("<a> </a>")
|
|
self.assertEqual(soup.a.string, "\N{NO-BREAK SPACE}" * 2)
|
|
|
|
def test_entities_converted_on_the_way_out(self):
|
|
text = "<p><<sacré bleu!>></p>"
|
|
expected = "<p><<sacr\N{LATIN SMALL LETTER E WITH ACUTE} bleu!>></p>".encode("utf-8")
|
|
soup = self.soup(text)
|
|
self.assertEqual(soup.p.encode("utf-8"), expected)
|
|
|
|
def test_real_iso_latin_document(self):
|
|
# Smoke test of interrelated functionality, using an
|
|
# easy-to-understand document.
|
|
|
|
# Here it is in Unicode. Note that it claims to be in ISO-Latin-1.
|
|
unicode_html = '<html><head><meta content="text/html; charset=ISO-Latin-1" http-equiv="Content-type"/></head><body><p>Sacr\N{LATIN SMALL LETTER E WITH ACUTE} bleu!</p></body></html>'
|
|
|
|
# That's because we're going to encode it into ISO-Latin-1, and use
|
|
# that to test.
|
|
iso_latin_html = unicode_html.encode("iso-8859-1")
|
|
|
|
# Parse the ISO-Latin-1 HTML.
|
|
soup = self.soup(iso_latin_html)
|
|
# Encode it to UTF-8.
|
|
result = soup.encode("utf-8")
|
|
|
|
# What do we expect the result to look like? Well, it would
|
|
# look like unicode_html, except that the META tag would say
|
|
# UTF-8 instead of ISO-Latin-1.
|
|
expected = unicode_html.replace("ISO-Latin-1", "utf-8")
|
|
|
|
# And, of course, it would be in UTF-8, not Unicode.
|
|
expected = expected.encode("utf-8")
|
|
|
|
# Ta-da!
|
|
self.assertEqual(result, expected)
|
|
|
|
def test_real_shift_jis_document(self):
|
|
# Smoke test to make sure the parser can handle a document in
|
|
# Shift-JIS encoding, without choking.
|
|
shift_jis_html = (
|
|
b'<html><head></head><body><pre>'
|
|
b'\x82\xb1\x82\xea\x82\xcdShift-JIS\x82\xc5\x83R\x81[\x83f'
|
|
b'\x83B\x83\x93\x83O\x82\xb3\x82\xea\x82\xbd\x93\xfa\x96{\x8c'
|
|
b'\xea\x82\xcc\x83t\x83@\x83C\x83\x8b\x82\xc5\x82\xb7\x81B'
|
|
b'</pre></body></html>')
|
|
unicode_html = shift_jis_html.decode("shift-jis")
|
|
soup = self.soup(unicode_html)
|
|
|
|
# Make sure the parse tree is correctly encoded to various
|
|
# encodings.
|
|
self.assertEqual(soup.encode("utf-8"), unicode_html.encode("utf-8"))
|
|
self.assertEqual(soup.encode("euc_jp"), unicode_html.encode("euc_jp"))
|
|
|
|
def test_real_hebrew_document(self):
|
|
# A real-world test to make sure we can convert ISO-8859-9 (a
|
|
# Hebrew encoding) to UTF-8.
|
|
hebrew_document = b'<html><head><title>Hebrew (ISO 8859-8) in Visual Directionality</title></head><body><h1>Hebrew (ISO 8859-8) in Visual Directionality</h1>\xed\xe5\xec\xf9</body></html>'
|
|
soup = self.soup(
|
|
hebrew_document, from_encoding="iso8859-8")
|
|
# Some tree builders call it iso8859-8, others call it iso-8859-9.
|
|
# That's not a difference we really care about.
|
|
assert soup.original_encoding in ('iso8859-8', 'iso-8859-8')
|
|
self.assertEqual(
|
|
soup.encode('utf-8'),
|
|
hebrew_document.decode("iso8859-8").encode("utf-8"))
|
|
|
|
def test_meta_tag_reflects_current_encoding(self):
|
|
# Here's the <meta> tag saying that a document is
|
|
# encoded in Shift-JIS.
|
|
meta_tag = ('<meta content="text/html; charset=x-sjis" '
|
|
'http-equiv="Content-type"/>')
|
|
|
|
# Here's a document incorporating that meta tag.
|
|
shift_jis_html = (
|
|
'<html><head>\n%s\n'
|
|
'<meta http-equiv="Content-language" content="ja"/>'
|
|
'</head><body>Shift-JIS markup goes here.') % meta_tag
|
|
soup = self.soup(shift_jis_html)
|
|
|
|
# Parse the document, and the charset is seemingly unaffected.
|
|
parsed_meta = soup.find('meta', {'http-equiv': 'Content-type'})
|
|
content = parsed_meta['content']
|
|
self.assertEqual('text/html; charset=x-sjis', content)
|
|
|
|
# But that value is actually a ContentMetaAttributeValue object.
|
|
self.assertTrue(isinstance(content, ContentMetaAttributeValue))
|
|
|
|
# And it will take on a value that reflects its current
|
|
# encoding.
|
|
self.assertEqual('text/html; charset=utf8', content.encode("utf8"))
|
|
|
|
# For the rest of the story, see TestSubstitutions in
|
|
# test_tree.py.
|
|
|
|
def test_html5_style_meta_tag_reflects_current_encoding(self):
|
|
# Here's the <meta> tag saying that a document is
|
|
# encoded in Shift-JIS.
|
|
meta_tag = ('<meta id="encoding" charset="x-sjis" />')
|
|
|
|
# Here's a document incorporating that meta tag.
|
|
shift_jis_html = (
|
|
'<html><head>\n%s\n'
|
|
'<meta http-equiv="Content-language" content="ja"/>'
|
|
'</head><body>Shift-JIS markup goes here.') % meta_tag
|
|
soup = self.soup(shift_jis_html)
|
|
|
|
# Parse the document, and the charset is seemingly unaffected.
|
|
parsed_meta = soup.find('meta', id="encoding")
|
|
charset = parsed_meta['charset']
|
|
self.assertEqual('x-sjis', charset)
|
|
|
|
# But that value is actually a CharsetMetaAttributeValue object.
|
|
self.assertTrue(isinstance(charset, CharsetMetaAttributeValue))
|
|
|
|
# And it will take on a value that reflects its current
|
|
# encoding.
|
|
self.assertEqual('utf8', charset.encode("utf8"))
|
|
|
|
def test_tag_with_no_attributes_can_have_attributes_added(self):
|
|
data = self.soup("<a>text</a>")
|
|
data.a['foo'] = 'bar'
|
|
self.assertEqual('<a foo="bar">text</a>', data.a.decode())
|
|
|
|
def test_worst_case(self):
|
|
"""Test the worst case (currently) for linking issues."""
|
|
|
|
soup = self.soup(BAD_DOCUMENT)
|
|
self.linkage_validator(soup)
|
|
|
|
|
|
class XMLTreeBuilderSmokeTest(object):
|
|
|
|
def test_pickle_and_unpickle_identity(self):
|
|
# Pickling a tree, then unpickling it, yields a tree identical
|
|
# to the original.
|
|
tree = self.soup("<a><b>foo</a>")
|
|
dumped = pickle.dumps(tree, 2)
|
|
loaded = pickle.loads(dumped)
|
|
self.assertEqual(loaded.__class__, BeautifulSoup)
|
|
self.assertEqual(loaded.decode(), tree.decode())
|
|
|
|
def test_docstring_generated(self):
|
|
soup = self.soup("<root/>")
|
|
self.assertEqual(
|
|
soup.encode(), b'<?xml version="1.0" encoding="utf-8"?>\n<root/>')
|
|
|
|
def test_xml_declaration(self):
|
|
markup = b"""<?xml version="1.0" encoding="utf8"?>\n<foo/>"""
|
|
soup = self.soup(markup)
|
|
self.assertEqual(markup, soup.encode("utf8"))
|
|
|
|
def test_processing_instruction(self):
|
|
markup = b"""<?xml version="1.0" encoding="utf8"?>\n<?PITarget PIContent?>"""
|
|
soup = self.soup(markup)
|
|
self.assertEqual(markup, soup.encode("utf8"))
|
|
|
|
def test_real_xhtml_document(self):
|
|
"""A real XHTML document should come out *exactly* the same as it went in."""
|
|
markup = b"""<?xml version="1.0" encoding="utf-8"?>
|
|
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN">
|
|
<html xmlns="http://www.w3.org/1999/xhtml">
|
|
<head><title>Hello.</title></head>
|
|
<body>Goodbye.</body>
|
|
</html>"""
|
|
soup = self.soup(markup)
|
|
self.assertEqual(
|
|
soup.encode("utf-8"), markup)
|
|
|
|
def test_nested_namespaces(self):
|
|
doc = b"""<?xml version="1.0" encoding="utf-8"?>
|
|
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
|
|
<parent xmlns="http://ns1/">
|
|
<child xmlns="http://ns2/" xmlns:ns3="http://ns3/">
|
|
<grandchild ns3:attr="value" xmlns="http://ns4/"/>
|
|
</child>
|
|
</parent>"""
|
|
soup = self.soup(doc)
|
|
self.assertEqual(doc, soup.encode())
|
|
|
|
def test_formatter_processes_script_tag_for_xml_documents(self):
|
|
doc = """
|
|
<script type="text/javascript">
|
|
</script>
|
|
"""
|
|
soup = BeautifulSoup(doc, "lxml-xml")
|
|
# lxml would have stripped this while parsing, but we can add
|
|
# it later.
|
|
soup.script.string = 'console.log("< < hey > > ");'
|
|
encoded = soup.encode()
|
|
self.assertTrue(b"< < hey > >" in encoded)
|
|
|
|
def test_can_parse_unicode_document(self):
|
|
markup = '<?xml version="1.0" encoding="euc-jp"><root>Sacr\N{LATIN SMALL LETTER E WITH ACUTE} bleu!</root>'
|
|
soup = self.soup(markup)
|
|
self.assertEqual('Sacr\xe9 bleu!', soup.root.string)
|
|
|
|
def test_popping_namespaced_tag(self):
|
|
markup = '<rss xmlns:dc="foo"><dc:creator>b</dc:creator><dc:date>2012-07-02T20:33:42Z</dc:date><dc:rights>c</dc:rights><image>d</image></rss>'
|
|
soup = self.soup(markup)
|
|
self.assertEqual(
|
|
str(soup.rss), markup)
|
|
|
|
def test_docstring_includes_correct_encoding(self):
|
|
soup = self.soup("<root/>")
|
|
self.assertEqual(
|
|
soup.encode("latin1"),
|
|
b'<?xml version="1.0" encoding="latin1"?>\n<root/>')
|
|
|
|
def test_large_xml_document(self):
|
|
"""A large XML document should come out the same as it went in."""
|
|
markup = (b'<?xml version="1.0" encoding="utf-8"?>\n<root>'
|
|
+ b'0' * (2**12)
|
|
+ b'</root>')
|
|
soup = self.soup(markup)
|
|
self.assertEqual(soup.encode("utf-8"), markup)
|
|
|
|
|
|
def test_tags_are_empty_element_if_and_only_if_they_are_empty(self):
|
|
self.assertSoupEquals("<p>", "<p/>")
|
|
self.assertSoupEquals("<p>foo</p>")
|
|
|
|
def test_namespaces_are_preserved(self):
|
|
markup = '<root xmlns:a="http://example.com/" xmlns:b="http://example.net/"><a:foo>This tag is in the a namespace</a:foo><b:foo>This tag is in the b namespace</b:foo></root>'
|
|
soup = self.soup(markup)
|
|
root = soup.root
|
|
self.assertEqual("http://example.com/", root['xmlns:a'])
|
|
self.assertEqual("http://example.net/", root['xmlns:b'])
|
|
|
|
def test_closing_namespaced_tag(self):
|
|
markup = '<p xmlns:dc="http://purl.org/dc/elements/1.1/"><dc:date>20010504</dc:date></p>'
|
|
soup = self.soup(markup)
|
|
self.assertEqual(str(soup.p), markup)
|
|
|
|
def test_namespaced_attributes(self):
|
|
markup = '<foo xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"><bar xsi:schemaLocation="http://www.example.com"/></foo>'
|
|
soup = self.soup(markup)
|
|
self.assertEqual(str(soup.foo), markup)
|
|
|
|
def test_namespaced_attributes_xml_namespace(self):
|
|
markup = '<foo xml:lang="fr">bar</foo>'
|
|
soup = self.soup(markup)
|
|
self.assertEqual(str(soup.foo), markup)
|
|
|
|
def test_find_by_prefixed_name(self):
|
|
doc = """<?xml version="1.0" encoding="utf-8"?>
|
|
<Document xmlns="http://example.com/ns0"
|
|
xmlns:ns1="http://example.com/ns1"
|
|
xmlns:ns2="http://example.com/ns2"
|
|
<ns1:tag>foo</ns1:tag>
|
|
<ns1:tag>bar</ns1:tag>
|
|
<ns2:tag key="value">baz</ns2:tag>
|
|
</Document>
|
|
"""
|
|
soup = self.soup(doc)
|
|
|
|
# There are three <tag> tags.
|
|
self.assertEqual(3, len(soup.find_all('tag')))
|
|
|
|
# But two of them are ns1:tag and one of them is ns2:tag.
|
|
self.assertEqual(2, len(soup.find_all('ns1:tag')))
|
|
self.assertEqual(1, len(soup.find_all('ns2:tag')))
|
|
|
|
self.assertEqual(1, len(soup.find_all('ns2:tag', key='value')))
|
|
self.assertEqual(3, len(soup.find_all(['ns1:tag', 'ns2:tag'])))
|
|
|
|
def test_copy_tag_preserves_namespace(self):
|
|
xml = """<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
|
|
<w:document xmlns:w="http://example.com/ns0"/>"""
|
|
|
|
soup = self.soup(xml)
|
|
tag = soup.document
|
|
duplicate = copy.copy(tag)
|
|
|
|
# The two tags have the same namespace prefix.
|
|
self.assertEqual(tag.prefix, duplicate.prefix)
|
|
|
|
def test_worst_case(self):
|
|
"""Test the worst case (currently) for linking issues."""
|
|
|
|
soup = self.soup(BAD_DOCUMENT)
|
|
self.linkage_validator(soup)
|
|
|
|
|
|
class HTML5TreeBuilderSmokeTest(HTMLTreeBuilderSmokeTest):
|
|
"""Smoke test for a tree builder that supports HTML5."""
|
|
|
|
def test_real_xhtml_document(self):
|
|
# Since XHTML is not HTML5, HTML5 parsers are not tested to handle
|
|
# XHTML documents in any particular way.
|
|
pass
|
|
|
|
def test_html_tags_have_namespace(self):
|
|
markup = "<a>"
|
|
soup = self.soup(markup)
|
|
self.assertEqual("http://www.w3.org/1999/xhtml", soup.a.namespace)
|
|
|
|
def test_svg_tags_have_namespace(self):
|
|
markup = '<svg><circle/></svg>'
|
|
soup = self.soup(markup)
|
|
namespace = "http://www.w3.org/2000/svg"
|
|
self.assertEqual(namespace, soup.svg.namespace)
|
|
self.assertEqual(namespace, soup.circle.namespace)
|
|
|
|
|
|
def test_mathml_tags_have_namespace(self):
|
|
markup = '<math><msqrt>5</msqrt></math>'
|
|
soup = self.soup(markup)
|
|
namespace = 'http://www.w3.org/1998/Math/MathML'
|
|
self.assertEqual(namespace, soup.math.namespace)
|
|
self.assertEqual(namespace, soup.msqrt.namespace)
|
|
|
|
def test_xml_declaration_becomes_comment(self):
|
|
markup = '<?xml version="1.0" encoding="utf-8"?><html></html>'
|
|
soup = self.soup(markup)
|
|
self.assertTrue(isinstance(soup.contents[0], Comment))
|
|
self.assertEqual(soup.contents[0], '?xml version="1.0" encoding="utf-8"?')
|
|
self.assertEqual("html", soup.contents[0].next_element.name)
|
|
|
|
def skipIf(condition, reason):
|
|
def nothing(test, *args, **kwargs):
|
|
return None
|
|
|
|
def decorator(test_item):
|
|
if condition:
|
|
return nothing
|
|
else:
|
|
return test_item
|
|
|
|
return decorator
|