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116 lines
4.0 KiB
Python
116 lines
4.0 KiB
Python
5 years ago
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"""Tests to ensure that the lxml tree builder generates good trees."""
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import re
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import warnings
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try:
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import lxml.etree
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LXML_PRESENT = True
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LXML_VERSION = lxml.etree.LXML_VERSION
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except ImportError as e:
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LXML_PRESENT = False
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LXML_VERSION = (0,)
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if LXML_PRESENT:
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from bs4.builder import LXMLTreeBuilder, LXMLTreeBuilderForXML
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from bs4 import (
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BeautifulSoup,
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BeautifulStoneSoup,
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)
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from bs4.element import Comment, Doctype, SoupStrainer
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from bs4.testing import skipIf
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from bs4.tests import test_htmlparser
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from bs4.testing import (
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HTMLTreeBuilderSmokeTest,
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XMLTreeBuilderSmokeTest,
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SoupTest,
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skipIf,
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)
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@skipIf(
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not LXML_PRESENT,
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"lxml seems not to be present, not testing its tree builder.")
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class LXMLTreeBuilderSmokeTest(SoupTest, HTMLTreeBuilderSmokeTest):
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"""See ``HTMLTreeBuilderSmokeTest``."""
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@property
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def default_builder(self):
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return LXMLTreeBuilder
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def test_out_of_range_entity(self):
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self.assertSoupEquals(
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"<p>foo�bar</p>", "<p>foobar</p>")
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self.assertSoupEquals(
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"<p>foo�bar</p>", "<p>foobar</p>")
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self.assertSoupEquals(
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"<p>foo�bar</p>", "<p>foobar</p>")
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def test_entities_in_foreign_document_encoding(self):
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# We can't implement this case correctly because by the time we
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# hear about markup like "“", it's been (incorrectly) converted into
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# a string like u'\x93'
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pass
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# In lxml < 2.3.5, an empty doctype causes a segfault. Skip this
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# test if an old version of lxml is installed.
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@skipIf(
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not LXML_PRESENT or LXML_VERSION < (2,3,5,0),
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"Skipping doctype test for old version of lxml to avoid segfault.")
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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_beautifulstonesoup_is_xml_parser(self):
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# Make sure that the deprecated BSS class uses an xml builder
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# if one is installed.
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with warnings.catch_warnings(record=True) as w:
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soup = BeautifulStoneSoup("<b />")
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self.assertEqual("<b/>", str(soup.b))
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self.assertTrue("BeautifulStoneSoup class is deprecated" in str(w[0].message))
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def test_tracking_line_numbers(self):
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# The lxml TreeBuilder cannot keep track of line numbers from
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# the original markup. Even if you ask for line numbers, we
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# don't have 'em.
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#
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# This means that if you have a tag like <sourceline> or
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# <sourcepos>, attribute access will find it rather than
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# giving you a numeric answer.
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soup = self.soup(
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"\n <p>\n\n<sourceline>\n<b>text</b></sourceline><sourcepos></p>",
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store_line_numbers=True
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)
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self.assertEqual("sourceline", soup.p.sourceline.name)
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self.assertEqual("sourcepos", soup.p.sourcepos.name)
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@skipIf(
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not LXML_PRESENT,
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"lxml seems not to be present, not testing its XML tree builder.")
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class LXMLXMLTreeBuilderSmokeTest(SoupTest, XMLTreeBuilderSmokeTest):
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"""See ``HTMLTreeBuilderSmokeTest``."""
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@property
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def default_builder(self):
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return LXMLTreeBuilderForXML
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def test_namespace_indexing(self):
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# We should not track un-prefixed namespaces as we can only hold one
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# and it will be recognized as the default namespace by soupsieve,
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# which may be confusing in some situations. When no namespace is provided
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# for a selector, the default namespace (if defined) is assumed.
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soup = self.soup(
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'<?xml version="1.1"?>\n'
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'<root>'
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'<tag xmlns="http://unprefixed-namespace.com">content</tag>'
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'<prefix:tag xmlns:prefix="http://prefixed-namespace.com">content</tag>'
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'</root>'
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)
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self.assertEqual(
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soup._namespaces,
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{'xml': 'http://www.w3.org/XML/1998/namespace', 'prefix': 'http://prefixed-namespace.com'}
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)
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