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"""Tests to ensure that the lxml tree builder generates good trees.""" import re import warnings try: import lxml.etree LXML_PRESENT = True LXML_VERSION = lxml.etree.LXML_VERSION except ImportError as e: LXML_PRESENT = False LXML_VERSION = (0,) if LXML_PRESENT: from bs4.builder import LXMLTreeBuilder, LXMLTreeBuilderForXML from bs4 import ( BeautifulSoup, BeautifulStoneSoup, ) from bs4.element import Comment, Doctype, SoupStrainer from bs4.testing import skipIf from bs4.tests import test_htmlparser from bs4.testing import ( HTMLTreeBuilderSmokeTest, XMLTreeBuilderSmokeTest, SoupTest, skipIf, ) @skipIf( not LXML_PRESENT, "lxml seems not to be present, not testing its tree builder.") class LXMLTreeBuilderSmokeTest(SoupTest, HTMLTreeBuilderSmokeTest): """See ``HTMLTreeBuilderSmokeTest``.""" @property def default_builder(self): return LXMLTreeBuilder() def test_out_of_range_entity(self): self.assertSoupEquals( "<p>foo�bar</p>", "<p>foobar</p>") self.assertSoupEquals( "<p>foo�bar</p>", "<p>foobar</p>") self.assertSoupEquals( "<p>foo�bar</p>", "<p>foobar</p>") # In lxml < 2.3.5, an empty doctype causes a segfault. Skip this # test if an old version of lxml is installed. @skipIf( not LXML_PRESENT or LXML_VERSION < (2,3,5,0), "Skipping doctype test for old version of lxml to avoid segfault.") def test_empty_doctype(self): soup = self.soup("<!DOCTYPE>") doctype = soup.contents[0] self.assertEqual("", doctype.strip()) def test_beautifulstonesoup_is_xml_parser(self): # Make sure that the deprecated BSS class uses an xml builder # if one is installed. with warnings.catch_warnings(record=True) as w: soup = BeautifulStoneSoup("<b />") self.assertEqual("<b/>", str(soup.b)) self.assertTrue("BeautifulStoneSoup class is deprecated" in str(w[0].message)) @skipIf( not LXML_PRESENT, "lxml seems not to be present, not testing its XML tree builder.") class LXMLXMLTreeBuilderSmokeTest(SoupTest, XMLTreeBuilderSmokeTest): """See ``HTMLTreeBuilderSmokeTest``.""" @property def default_builder(self): return LXMLTreeBuilderForXML()