beautifulsoup4-4.12.3/CHANGELOG0000644000000000000000000021375513615410400012723 0ustar00= 4.12.3 (20240117) * The Beautiful Soup documentation now has a Spanish translation, thanks to Carlos Romero. Delong Wang's Chinese translation has been updated to cover Beautiful Soup 4.12.0. * Fixed a regression such that if you set .hidden on a tag, the tag becomes invisible but its contents are still visible. User manipulation of .hidden is not a documented or supported feature, so don't do this, but it wasn't too difficult to keep the old behavior working. * Fixed a case found by Mengyuhan where html.parser giving up on markup would result in an AssertionError instead of a ParserRejectedMarkup exception. * Added the correct stacklevel to instances of the XMLParsedAsHTMLWarning. [bug=2034451] * Corrected the syntax of the license definition in pyproject.toml. Patch by Louis Maddox. [bug=2032848] * Corrected a typo in a test that was causing test failures when run against libxml2 2.12.1. [bug=2045481] = 4.12.2 (20230407) * Fixed an unhandled exception in BeautifulSoup.decode_contents and methods that call it. [bug=2015545] = 4.12.1 (20230405) NOTE: the following things are likely to be dropped in the next feature release of Beautiful Soup: Official support for Python 3.6. Inclusion of unit tests and test data in the wheel file. Two scripts: demonstrate_parser_differences.py and test-all-versions. Changes: * This version of Beautiful Soup replaces setup.py and setup.cfg with pyproject.toml. Beautiful Soup now uses tox as its test backend and hatch to do builds. * The main functional improvement in this version is a nonrecursive technique for regenerating a tree. This technique is used to avoid situations where, in previous versions, doing something to a very deeply nested tree would overflow the Python interpreter stack: 1. Outputting a tree as a string, e.g. with BeautifulSoup.encode() [bug=1471755] 2. Making copies of trees (copy.copy() and copy.deepcopy() from the Python standard library). [bug=1709837] 3. Pickling a BeautifulSoup object. (Note that pickling a Tag object can still cause an overflow.) * Making a copy of a BeautifulSoup object no longer parses the document again, which should improve performance significantly. * When a BeautifulSoup object is unpickled, Beautiful Soup now tries to associate an appropriate TreeBuilder object with it. * Tag.prettify() will now consistently end prettified markup with a newline. * Added unit tests for fuzz test cases created by third parties. Some of these tests are skipped since they point to problems outside of Beautiful Soup, but this change puts them all in one convenient place. * PageElement now implements the known_xml attribute. (This was technically a bug, but it shouldn't be an issue in normal use.) [bug=2007895] * The demonstrate_parser_differences.py script was still written in Python 2. I've converted it to Python 3, but since no one has mentioned this over the years, it's a sign that no one uses this script and it's not serving its purpose. = 4.12.0 (20230320) * Introduced the .css property, which centralizes all access to the Soup Sieve API. This allows Beautiful Soup to give direct access to as much of Soup Sieve that makes sense, without cluttering the BeautifulSoup and Tag classes with a lot of new methods. This does mean one addition to the BeautifulSoup and Tag classes (the .css property itself), so this might be a breaking change if you happen to use Beautiful Soup to parse XML that includes a tag called . In particular, code like this will stop working in 4.12.0: soup.css['id'] Code like this will work just as before: soup.find_one('css')['id'] The Soup Sieve methods supported through the .css property are select(), select_one(), iselect(), closest(), match(), filter(), escape(), and compile(). The BeautifulSoup and Tag classes still support the select() and select_one() methods; they have not been deprecated, but they have been demoted to convenience methods. [bug=2003677] * When the html.parser parser decides it can't parse a document, Beautiful Soup now consistently propagates this fact by raising a ParserRejectedMarkup error. [bug=2007343] * Removed some error checking code from diagnose(), which is redundant with similar (but more Pythonic) code in the BeautifulSoup constructor. [bug=2007344] * Added intersphinx references to the documentation so that other projects have a target to point to when they reference Beautiful Soup classes. [bug=1453370] = 4.11.2 (20230131) * Fixed test failures caused by nondeterministic behavior of UnicodeDammit's character detection, depending on the platform setup. [bug=1973072] * Fixed another crash when overriding multi_valued_attributes and using the html5lib parser. [bug=1948488] * The HTMLFormatter and XMLFormatter constructors no longer return a value. [bug=1992693] * Tag.interesting_string_types is now propagated when a tag is copied. [bug=1990400] * Warnings now do their best to provide an appropriate stacklevel, improving the usefulness of the message. [bug=1978744] * Passing a Tag's .contents into PageElement.extend() now works the same way as passing the Tag itself. * Soup Sieve tests will be skipped if the library is not installed. = 4.11.1 (20220408) This release was done to ensure that the unit tests are packaged along with the released source. There are no functionality changes in this release, but there are a few other packaging changes: * The Japanese and Korean translations of the documentation are included. * The changelog is now packaged as CHANGELOG, and the license file is packaged as LICENSE. NEWS.txt and COPYING.txt are still present, but may be removed in the future. * TODO.txt is no longer packaged, since a TODO is not relevant for released code. = 4.11.0 (20220407) * Ported unit tests to use pytest. * Added special string classes, RubyParenthesisString and RubyTextString, to make it possible to treat ruby text specially in get_text() calls. [bug=1941980] * It's now possible to customize the way output is indented by providing a value for the 'indent' argument to the Formatter constructor. The 'indent' argument works very similarly to the argument of the same name in the Python standard library's json.dump() function. [bug=1955497] * If the charset-normalizer Python module (https://pypi.org/project/charset-normalizer/) is installed, Beautiful Soup will use it to detect the character sets of incoming documents. This is also the module used by newer versions of the Requests library. For the sake of backwards compatibility, chardet and cchardet both take precedence if installed. [bug=1955346] * Added a workaround for an lxml bug (https://bugs.launchpad.net/lxml/+bug/1948551) that causes problems when parsing a Unicode string beginning with BYTE ORDER MARK. [bug=1947768] * Issue a warning when an HTML parser is used to parse a document that looks like XML but not XHTML. [bug=1939121] * Do a better job of keeping track of namespaces as an XML document is parsed, so that CSS selectors that use namespaces will do the right thing more often. [bug=1946243] * Some time ago, the misleadingly named "text" argument to find-type methods was renamed to the more accurate "string." But this supposed "renaming" didn't make it into important places like the method signatures or the docstrings. That's corrected in this version. "text" still works, but will give a DeprecationWarning. [bug=1947038] * Fixed a crash when pickling a BeautifulSoup object that has no tree builder. [bug=1934003] * Fixed a crash when overriding multi_valued_attributes and using the html5lib parser. [bug=1948488] * Standardized the wording of the MarkupResemblesLocatorWarning warnings to omit untrusted input and make the warnings less judgmental about what you ought to be doing. [bug=1955450] * Removed support for the iconv_codec library, which doesn't seem to exist anymore and was never put up on PyPI. (The closest replacement on PyPI, iconv_codecs, is GPL-licensed, so we can't use it--it's also quite old.) = 4.10.0 (20210907) * This is the first release of Beautiful Soup to only support Python 3. I dropped Python 2 support to maintain support for newer versions (58 and up) of setuptools. See: https://github.com/pypa/setuptools/issues/2769 [bug=1942919] * The behavior of methods like .get_text() and .strings now differs depending on the type of tag. The change is visible with HTML tags like
This numeric entity is missing the final semicolon:
, that attribute value was closed by the subsequent tag
a
This document contains (do you see it?)
This document ends with That attribute value was bogus
The doctype is invalid because it contains extra whitespace
That boolean attribute had no value
Here's a nonexistent entity: &#foo; (do you see it?)
This document ends before the entity finishes: >

Paragraphs shouldn't contain block display elements, but this one does:

you see?

Multiple values for the same attribute.
Here's a table
This tag contains nothing but whitespace:

This p tag is cut off by

the end of the blockquote tag
Here's a nested table:
foo
This table contains bare markup
This document contains a surprise doctype
Tag name contains Unicode characters
""" class SoupTest(object): @property def default_builder(self): return default_builder def soup(self, markup, **kwargs): """Build a Beautiful Soup object from markup.""" builder = kwargs.pop('builder', self.default_builder) return BeautifulSoup(markup, builder=builder, **kwargs) def document_for(self, markup, **kwargs): """Turn an HTML fragment into a document. The details depend on the builder. """ return self.default_builder(**kwargs).test_fragment_to_document(markup) def assert_soup(self, to_parse, compare_parsed_to=None): """Parse some markup using Beautiful Soup and verify that the output markup is as expected. """ builder = self.default_builder obj = BeautifulSoup(to_parse, builder=builder) if compare_parsed_to is None: compare_parsed_to = to_parse # Verify that the documents come out the same. assert obj.decode() == self.document_for(compare_parsed_to) # Also run some checks on the BeautifulSoup object itself: # Verify that every tag that was opened was eventually closed. # There are no tags in the open tag counter. assert all(v==0 for v in list(obj.open_tag_counter.values())) # The only tag in the tag stack is the one for the root # document. assert [obj.ROOT_TAG_NAME] == [x.name for x in obj.tagStack] assertSoupEquals = assert_soup def assertConnectedness(self, element): """Ensure that next_element and previous_element are properly set for all descendants of the given element. """ earlier = None for e in element.descendants: if earlier: assert e == earlier.next_element assert earlier == e.previous_element earlier = e def linkage_validator(self, el, _recursive_call=False): """Ensure proper linkage throughout the document.""" descendant = None # Document element should have no previous element or previous sibling. # It also shouldn't have a next sibling. if el.parent is None: assert el.previous_element is None,\ "Bad previous_element\nNODE: {}\nPREV: {}\nEXPECTED: {}".format( el, el.previous_element, None ) assert el.previous_sibling is None,\ "Bad previous_sibling\nNODE: {}\nPREV: {}\nEXPECTED: {}".format( el, el.previous_sibling, None ) assert el.next_sibling is None,\ "Bad next_sibling\nNODE: {}\nNEXT: {}\nEXPECTED: {}".format( el, el.next_sibling, None ) idx = 0 child = None last_child = None last_idx = len(el.contents) - 1 for child in el.contents: descendant = None # Parent should link next element to their first child # That child should have no previous sibling if idx == 0: if el.parent is not None: assert el.next_element is child,\ "Bad next_element\nNODE: {}\nNEXT: {}\nEXPECTED: {}".format( el, el.next_element, child ) assert child.previous_element is el,\ "Bad previous_element\nNODE: {}\nPREV: {}\nEXPECTED: {}".format( child, child.previous_element, el ) assert child.previous_sibling is None,\ "Bad previous_sibling\nNODE: {}\nPREV {}\nEXPECTED: {}".format( child, child.previous_sibling, None ) # If not the first child, previous index should link as sibling to this index # Previous element should match the last index or the last bubbled up descendant else: assert child.previous_sibling is el.contents[idx - 1],\ "Bad previous_sibling\nNODE: {}\nPREV {}\nEXPECTED {}".format( child, child.previous_sibling, el.contents[idx - 1] ) assert el.contents[idx - 1].next_sibling is child,\ "Bad next_sibling\nNODE: {}\nNEXT {}\nEXPECTED {}".format( el.contents[idx - 1], el.contents[idx - 1].next_sibling, child ) if last_child is not None: assert child.previous_element is last_child,\ "Bad previous_element\nNODE: {}\nPREV {}\nEXPECTED {}\nCONTENTS {}".format( child, child.previous_element, last_child, child.parent.contents ) assert last_child.next_element is child,\ "Bad next_element\nNODE: {}\nNEXT {}\nEXPECTED {}".format( last_child, last_child.next_element, child ) if isinstance(child, Tag) and child.contents: descendant = self.linkage_validator(child, True) # A bubbled up descendant should have no next siblings assert descendant.next_sibling is None,\ "Bad next_sibling\nNODE: {}\nNEXT {}\nEXPECTED {}".format( descendant, descendant.next_sibling, None ) # Mark last child as either the bubbled up descendant or the current child if descendant is not None: last_child = descendant else: last_child = child # If last child, there are non next siblings if idx == last_idx: assert child.next_sibling is None,\ "Bad next_sibling\nNODE: {}\nNEXT {}\nEXPECTED {}".format( child, child.next_sibling, None ) idx += 1 child = descendant if descendant is not None else child if child is None: child = el if not _recursive_call and child is not None: target = el while True: if target is None: assert child.next_element is None, \ "Bad next_element\nNODE: {}\nNEXT {}\nEXPECTED {}".format( child, child.next_element, None ) break elif target.next_sibling is not None: assert child.next_element is target.next_sibling, \ "Bad next_element\nNODE: {}\nNEXT {}\nEXPECTED {}".format( child, child.next_element, target.next_sibling ) break target = target.parent # We are done, so nothing to return return None else: # Return the child to the recursive caller return child def assert_selects(self, tags, should_match): """Make sure that the given tags have the correct text. This is used in tests that define a bunch of tags, each containing a single string, and then select certain strings by some mechanism. """ assert [tag.string for tag in tags] == should_match def assert_selects_ids(self, tags, should_match): """Make sure that the given tags have the correct IDs. This is used in tests that define a bunch of tags, each containing a single string, and then select certain strings by some mechanism. """ assert [tag['id'] for tag in tags] == should_match class TreeBuilderSmokeTest(object): # Tests that are common to HTML and XML tree builders. @pytest.mark.parametrize( "multi_valued_attributes", [None, {}, dict(b=['class']), {'*': ['notclass']}] ) def test_attribute_not_multi_valued(self, multi_valued_attributes): markup = '' soup = self.soup(markup, multi_valued_attributes=multi_valued_attributes) assert soup.a['class'] == 'a b c' @pytest.mark.parametrize( "multi_valued_attributes", [dict(a=['class']), {'*': ['class']}] ) def test_attribute_multi_valued(self, multi_valued_attributes): markup = '' soup = self.soup( markup, multi_valued_attributes=multi_valued_attributes ) assert soup.a['class'] == ['a', 'b', 'c'] def test_invalid_doctype(self): markup = 'content' markup = '' soup = self.soup(markup) class HTMLTreeBuilderSmokeTest(TreeBuilderSmokeTest): """A basic test of a treebuilder's competence. Any HTML treebuilder, present or future, should be able to pass these tests. With invalid markup, there's room for interpretation, and different parsers can handle it differently. But with the markup in these tests, there's not much room for interpretation. """ def test_empty_element_tags(self): """Verify that all HTML4 and HTML5 empty element (aka void element) tags are handled correctly. """ for name in [ 'area', 'base', 'br', 'col', 'embed', 'hr', 'img', 'input', 'keygen', 'link', 'menuitem', 'meta', 'param', 'source', 'track', 'wbr', 'spacer', 'frame' ]: soup = self.soup("") new_tag = soup.new_tag(name) assert new_tag.is_empty_element == True def test_special_string_containers(self): soup = self.soup( "" ) assert isinstance(soup.style.string, Stylesheet) assert isinstance(soup.script.string, Script) soup = self.soup( "" ) assert isinstance(soup.style.string, Stylesheet) # The contents of the style tag resemble an HTML comment, but # it's not treated as a comment. assert soup.style.string == "" assert isinstance(soup.style.string, Stylesheet) def test_pickle_and_unpickle_identity(self): # Pickling a tree, then unpickling it, yields a tree identical # to the original. tree = self.soup("foo") dumped = pickle.dumps(tree, 2) loaded = pickle.loads(dumped) assert loaded.__class__ == BeautifulSoup assert loaded.decode() == tree.decode() def assertDoctypeHandled(self, doctype_fragment): """Assert that a given doctype string is handled correctly.""" doctype_str, soup = self._document_with_doctype(doctype_fragment) # Make sure a Doctype object was created. doctype = soup.contents[0] assert doctype.__class__ == Doctype assert doctype == doctype_fragment assert soup.encode("utf8")[:len(doctype_str)] == doctype_str # Make sure that the doctype was correctly associated with the # parse tree and that the rest of the document parsed. assert soup.p.contents[0] == 'foo' def _document_with_doctype(self, doctype_fragment, doctype_string="DOCTYPE"): """Generate and parse a document with the given doctype.""" doctype = '' % (doctype_string, doctype_fragment) markup = doctype + '\n

foo

' soup = self.soup(markup) return doctype.encode("utf8"), soup def test_normal_doctypes(self): """Make sure normal, everyday HTML doctypes are handled correctly.""" self.assertDoctypeHandled("html") self.assertDoctypeHandled( 'html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"') def test_empty_doctype(self): soup = self.soup("") doctype = soup.contents[0] assert "" == doctype.strip() def test_mixed_case_doctype(self): # A lowercase or mixed-case doctype becomes a Doctype. for doctype_fragment in ("doctype", "DocType"): doctype_str, soup = self._document_with_doctype( "html", doctype_fragment ) # Make sure a Doctype object was created and that the DOCTYPE # is uppercase. doctype = soup.contents[0] assert doctype.__class__ == Doctype assert doctype == "html" assert soup.encode("utf8")[:len(doctype_str)] == b"" # Make sure that the doctype was correctly associated with the # parse tree and that the rest of the document parsed. assert soup.p.contents[0] == 'foo' def test_public_doctype_with_url(self): doctype = 'html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"' self.assertDoctypeHandled(doctype) def test_system_doctype(self): self.assertDoctypeHandled('foo SYSTEM "http://www.example.com/"') def test_namespaced_system_doctype(self): # We can handle a namespaced doctype with a system ID. self.assertDoctypeHandled('xsl:stylesheet SYSTEM "htmlent.dtd"') def test_namespaced_public_doctype(self): # Test a namespaced doctype with a public id. self.assertDoctypeHandled('xsl:stylesheet PUBLIC "htmlent.dtd"') def test_real_xhtml_document(self): """A real XHTML document should come out more or less the same as it went in.""" markup = b""" Hello. Goodbye. """ with warnings.catch_warnings(record=True) as w: soup = self.soup(markup) assert soup.encode("utf-8").replace(b"\n", b"") == markup.replace(b"\n", b"") # No warning was issued about parsing an XML document as HTML, # because XHTML is both. assert w == [] def test_namespaced_html(self): # When a namespaced XML document is parsed as HTML it should # be treated as HTML with weird tag names. markup = b"""content""" with warnings.catch_warnings(record=True) as w: soup = self.soup(markup) assert 2 == len(soup.find_all("ns1:foo")) # n.b. no "you're parsing XML as HTML" warning was given # because there was no XML declaration. assert [] == w def test_detect_xml_parsed_as_html(self): # A warning is issued when parsing an XML document as HTML, # but basic stuff should still work. markup = b"""string""" with warnings.catch_warnings(record=True) as w: soup = self.soup(markup) assert soup.tag.string == 'string' [warning] = w assert isinstance(warning.message, XMLParsedAsHTMLWarning) assert str(warning.message) == XMLParsedAsHTMLWarning.MESSAGE # NOTE: the warning is not issued if the document appears to # be XHTML (tested with test_real_xhtml_document in the # superclass) or if there is no XML declaration (tested with # test_namespaced_html in the superclass). def test_processing_instruction(self): # We test both Unicode and bytestring to verify that # process_markup correctly sets processing_instruction_class # even when the markup is already Unicode and there is no # need to process anything. markup = """""" soup = self.soup(markup) assert markup == soup.decode() markup = b"""""" soup = self.soup(markup) assert markup == soup.encode("utf8") def test_deepcopy(self): """Make sure you can copy the tree builder. This is important because the builder is part of a BeautifulSoup object, and we want to be able to copy that. """ copy.deepcopy(self.default_builder) def test_p_tag_is_never_empty_element(self): """A

tag is never designated as an empty-element tag. Even if the markup shows it as an empty-element tag, it shouldn't be presented that way. """ soup = self.soup("

") assert not soup.p.is_empty_element assert str(soup.p) == "

" def test_unclosed_tags_get_closed(self): """A tag that's not closed by the end of the document should be closed. This applies to all tags except empty-element tags. """ self.assert_soup("

", "

") self.assert_soup("", "") self.assert_soup("
", "
") def test_br_is_always_empty_element_tag(self): """A
tag is designated as an empty-element tag. Some parsers treat

as one
tag, some parsers as two tags, but it should always be an empty-element tag. """ soup = self.soup("

") assert soup.br.is_empty_element assert str(soup.br) == "
" def test_nested_formatting_elements(self): self.assert_soup("") def test_double_head(self): html = ''' Ordinary HEAD element test Hello, world! ''' soup = self.soup(html) assert "text/javascript" == soup.find('script')['type'] def test_comment(self): # Comments are represented as Comment objects. markup = "

foobaz

" self.assert_soup(markup) soup = self.soup(markup) comment = soup.find(string="foobar") assert comment.__class__ == Comment # The comment is properly integrated into the tree. foo = soup.find(string="foo") assert comment == foo.next_element baz = soup.find(string="baz") assert comment == baz.previous_element def test_preserved_whitespace_in_pre_and_textarea(self): """Whitespace must be preserved in 
 and \n"
        self.assert_soup(pre_markup)
        self.assert_soup(textarea_markup)

        soup = self.soup(pre_markup)
        assert soup.pre.prettify() == pre_markup

        soup = self.soup(textarea_markup)
        assert soup.textarea.prettify() == textarea_markup

        soup = self.soup("")
        assert soup.textarea.prettify() == "\n"

    def test_nested_inline_elements(self):
        """Inline elements can be nested indefinitely."""
        b_tag = "Inside a B tag"
        self.assert_soup(b_tag)

        nested_b_tag = "
A nested tag
"
        self.assert_soup(nested_b_tag)

        double_nested_b_tag = "
A doubly nested tag
"
        self.assert_soup(nested_b_tag)

    def test_nested_block_level_elements(self):
        """Block elements can be nested."""
        soup = self.soup('
Foo
')
        blockquote = soup.blockquote
        assert blockquote.p.b.string == 'Foo'
        assert blockquote.b.string == 'Foo'

    def test_correctly_nested_tables(self):
        """One table can go inside another one."""
        markup = (''
                  ''
                  "')

        self.assert_soup(
            markup,
            '
Here's another table:"
                  ''
                  ''
                  '
foo
Here\'s another table:'
            '
foo
'
            '
')

        self.assert_soup(
            ""
            ""
            "
Foo
Bar
Baz
")

    def test_multivalued_attribute_with_whitespace(self):
        # Whitespace separating the values of a multi-valued attribute
        # should be ignored.

        markup = '
'
        soup = self.soup(markup)
        assert ['foo', 'bar'] == soup.div['class']

        # If you search by the literal name of the class it's like the whitespace
        # wasn't there.
        assert 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 = '
'
        soup = self.soup(markup)
        assert ["css"] == soup.div.div['class']

    def test_multivalued_attribute_on_html(self):
        # html5lib uses a different API to set the attributes ot the
        #  tag. This has caused problems with multivalued
        # attributes.
        markup = ''
        soup = self.soup(markup)
        assert ["a", "b"] == soup.html['class']

    def test_angle_brackets_in_attribute_values_are_escaped(self):
        self.assert_soup('', '')

    def test_strings_resembling_character_entity_references(self):
        # "&T" and "&p" look like incomplete character entities, but they are
        # not.
        self.assert_soup(
            "
• AT&T is in the s&p 500
",
            "
\u2022 AT&T is in the s&p 500
"
        )

    def test_apos_entity(self):
        self.assert_soup(
            "
Bob's Bar
",
            "
Bob's Bar
",
        )
        
    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 = "
“Hello” -☃
"
        soup = self.soup(markup)
        assert "“Hello” -☃" == soup.p.string
        
    def test_entities_in_attributes_converted_to_unicode(self):
        expect = '
'
        self.assert_soup('
', expect)
        self.assert_soup('
', expect)
        self.assert_soup('
', expect)
        self.assert_soup('
', expect)

    def test_entities_in_text_converted_to_unicode(self):
        expect = '
pi\N{LATIN SMALL LETTER N WITH TILDE}ata
'
        self.assert_soup("
piñata
", expect)
        self.assert_soup("
piñata
", expect)
        self.assert_soup("
piñata
", expect)
        self.assert_soup("
piñata
", expect)

    def test_quot_entity_converted_to_quotation_mark(self):
        self.assert_soup("
I said "good day!"
",
                              '
I said "good day!"
')

    def test_out_of_range_entity(self):
        expect = "\N{REPLACEMENT CHARACTER}"
        self.assert_soup("�", expect)
        self.assert_soup("�", expect)
        self.assert_soup("�", expect)
       
    def test_multipart_strings(self):
        "Mostly to prevent a recurrence of a bug in the html5lib treebuilder."
        soup = self.soup("
\nfoo
")
        assert "p" == soup.h2.string.next_element.name
        assert "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.assert_soup('


', "


")
        self.assert_soup('


', "


")
        
    def test_head_tag_between_head_and_body(self):
        "Prevent recurrence of a bug in the html5lib treebuilder."
        content = """
  
  foo

"""
        soup = self.soup(content)
        assert soup.html.body is not None
        self.assertConnectedness(soup)

    def test_multiple_copies_of_a_tag(self):
        "Prevent recurrence of a bug in the html5lib treebuilder."
        content = """

 
   
  

"""
        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'4'
        soup = self.soup(markup)
        assert markup == soup.encode()
        html = soup.html
        assert 'http://www.w3.org/1999/xhtml' == soup.html['xmlns']
        assert 'http://www.w3.org/1998/Math/MathML' == soup.html['xmlns:mathml']
        assert 'http://www.w3.org/2000/svg' == soup.html['xmlns:svg']

    def test_multivalued_attribute_value_becomes_list(self):
        markup = b''
        soup = self.soup(markup)
        assert ['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 = 'Sacr\N{LATIN SMALL LETTER E WITH ACUTE} bleu!'
        soup = self.soup(markup)
        assert '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 bold  statement",
                         parse_only=strainer)
        assert soup.decode() == "bold"

    def test_single_quote_attribute_values_become_double_quotes(self):
        self.assert_soup("",
                              '')

    def test_attribute_values_with_nested_quotes_are_left_alone(self):
        text = """a"""
        self.assert_soup(text)

    def test_attribute_values_with_double_nested_quotes_get_quoted(self):
        text = """a"""
        soup = self.soup(text)
        soup.foo['attr'] = 'Brawls happen at "Bob\'s Bar"'
        self.assert_soup(
            soup.foo.decode(),
            """a""")

    def test_ampersand_in_attribute_value_gets_escaped(self):
        self.assert_soup('',
                              '')

        self.assert_soup(
            'foo',
            'foo')

    def test_escaped_ampersand_in_attribute_value_is_left_alone(self):
        self.assert_soup('')

    def test_entities_in_strings_converted_during_parsing(self):
        # Both XML and HTML entities are converted to Unicode characters
        # during parsing.
        text = "
<<sacré bleu!>>
"
        expected = "
<<sacr\N{LATIN SMALL LETTER E WITH ACUTE} bleu!>>
"
        self.assert_soup(text, expected)

    def test_smart_quotes_converted_on_the_way_in(self):
        # Microsoft smart quotes are converted to Unicode characters during
        # parsing.
        quote = b"
\x91Foo\x92
"
        soup = self.soup(quote)
        assert 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("  ")
        assert soup.a.string == "\N{NO-BREAK SPACE}" * 2

    def test_entities_converted_on_the_way_out(self):
        text = "
<<sacré bleu!>>
"
        expected = "
<<sacr\N{LATIN SMALL LETTER E WITH ACUTE} bleu!>>
".encode("utf-8")
        soup = self.soup(text)
        assert soup.p.encode("utf-8") == expected

    def test_real_iso_8859_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-8859-1.
        unicode_html = '
Sacr\N{LATIN SMALL LETTER E WITH ACUTE} bleu!
'

        # That's because we're going to encode it into ISO-8859-1,
        # and use that to test.
        iso_latin_html = unicode_html.encode("iso-8859-1")

        # Parse the ISO-8859-1 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-8859-1.
        expected = unicode_html.replace("ISO-8859-1", "utf-8")

        # And, of course, it would be in UTF-8, not Unicode.
        expected = expected.encode("utf-8")

        # Ta-da!
        assert 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'
'
            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'
')
        unicode_html = shift_jis_html.decode("shift-jis")
        soup = self.soup(unicode_html)

        # Make sure the parse tree is correctly encoded to various
        # encodings.
        assert soup.encode("utf-8") == unicode_html.encode("utf-8")
        assert 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'Hebrew (ISO 8859-8) in Visual Directionality
Hebrew (ISO 8859-8) in Visual Directionality
\xed\xe5\xec\xf9'
        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')
        assert soup.encode('utf-8') == (
            hebrew_document.decode("iso8859-8").encode("utf-8")
        )

    def test_meta_tag_reflects_current_encoding(self):
        # Here's the  tag saying that a document is
        # encoded in Shift-JIS.
        meta_tag = ('')

        # Here's a document incorporating that meta tag.
        shift_jis_html = (
            '\n%s\n'
            ''
            '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']
        assert 'text/html; charset=x-sjis' == content

        # But that value is actually a ContentMetaAttributeValue object.
        assert isinstance(content, ContentMetaAttributeValue)

        # And it will take on a value that reflects its current
        # encoding.
        assert '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  tag saying that a document is
        # encoded in Shift-JIS.
        meta_tag = ('')

        # Here's a document incorporating that meta tag.
        shift_jis_html = (
            '\n%s\n'
            ''
            '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']
        assert 'x-sjis' == charset

        # But that value is actually a CharsetMetaAttributeValue object.
        assert isinstance(charset, CharsetMetaAttributeValue)

        # And it will take on a value that reflects its current
        # encoding.
        assert 'utf8' == charset.encode("utf8")

    def test_python_specific_encodings_not_used_in_charset(self):
        # You can encode an HTML document using a Python-specific
        # encoding, but that encoding won't be mentioned _inside_ the
        # resulting document. Instead, the document will appear to
        # have no encoding.
        for markup in [
            b''
            b''
        ]:
            soup = self.soup(markup)
            for encoding in PYTHON_SPECIFIC_ENCODINGS:
                if encoding in (
                    'idna', 'mbcs', 'oem', 'undefined',
                    'string_escape', 'string-escape'
                ):
                    # For one reason or another, these will raise an
                    # exception if we actually try to use them, so don't
                    # bother.
                    continue
                encoded = soup.encode(encoding)
                assert b'meta charset=""' in encoded
                assert encoding.encode("ascii") not in encoded
        
    def test_tag_with_no_attributes_can_have_attributes_added(self):
        data = self.soup("text")
        data.a['foo'] = 'bar'
        assert 'text' == data.a.decode()

    def test_closing_tag_with_no_opening_tag(self):
        # Without BeautifulSoup.open_tag_counter, the  tag will
        # cause _popToTag to be called over and over again as we look
        # for a  tag that wasn't there. The result is that 'text2'
        # will show up outside the body of the document.
        soup = self.soup("
text1
text2
")
        assert "
text1
text2
" == soup.body.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(TreeBuilderSmokeTest):

    def test_pickle_and_unpickle_identity(self):
        # Pickling a tree, then unpickling it, yields a tree identical
        # to the original.
        tree = self.soup("foo")
        dumped = pickle.dumps(tree, 2)
        loaded = pickle.loads(dumped)
        assert loaded.__class__ == BeautifulSoup
        assert loaded.decode() == tree.decode()

    def test_docstring_generated(self):
        soup = self.soup("")
        assert soup.encode() == b'\n'

    def test_xml_declaration(self):
        markup = b"""\n"""
        soup = self.soup(markup)
        assert markup == soup.encode("utf8")

    def test_python_specific_encodings_not_used_in_xml_declaration(self):
        # You can encode an XML document using a Python-specific
        # encoding, but that encoding won't be mentioned _inside_ the
        # resulting document.
        markup = b"""\n"""
        soup = self.soup(markup)
        for encoding in PYTHON_SPECIFIC_ENCODINGS:
            if encoding in (
                'idna', 'mbcs', 'oem', 'undefined',
                'string_escape', 'string-escape'
            ):
                # For one reason or another, these will raise an
                # exception if we actually try to use them, so don't
                # bother.
                continue
            encoded = soup.encode(encoding)
            assert b'' in encoded
            assert encoding.encode("ascii") not in encoded

    def test_processing_instruction(self):
        markup = b"""\n"""
        soup = self.soup(markup)
        assert 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"""


Hello.
Goodbye.
"""
        soup = self.soup(markup)
        assert soup.encode("utf-8") == markup
       
    def test_nested_namespaces(self):
        doc = b"""





"""
        soup = self.soup(doc)
        assert doc == soup.encode()
        
    def test_formatter_processes_script_tag_for_xml_documents(self):
        doc = """
  
"""
        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()
        assert b"< < hey > >" in encoded

    def test_can_parse_unicode_document(self):
        markup = 'Sacr\N{LATIN SMALL LETTER E WITH ACUTE} bleu!'
        soup = self.soup(markup)
        assert 'Sacr\xe9 bleu!' == soup.root.string

    def test_can_parse_unicode_document_begining_with_bom(self):
        markup = '\N{BYTE ORDER MARK}Sacr\N{LATIN SMALL LETTER E WITH ACUTE} bleu!'
        soup = self.soup(markup)
        assert 'Sacr\xe9 bleu!' == soup.root.string
        
    def test_popping_namespaced_tag(self):
        markup = 'b2012-07-02T20:33:42Zcd'
        soup = self.soup(markup)
        assert str(soup.rss) == markup

    def test_docstring_includes_correct_encoding(self):
        soup = self.soup("")
        assert soup.encode("latin1") == b'\n'

    def test_large_xml_document(self):
        """A large XML document should come out the same as it went in."""
        markup = (b'\n'
                  + b'0' * (2**12)
                  + b'')
        soup = self.soup(markup)
        assert soup.encode("utf-8") == markup

    def test_tags_are_empty_element_if_and_only_if_they_are_empty(self):
        self.assert_soup("
", "
")
        self.assert_soup("
foo
")

    def test_namespaces_are_preserved(self):
        markup = 'This tag is in the a namespaceThis tag is in the b namespace'
        soup = self.soup(markup)
        root = soup.root
        assert "http://example.com/" == root['xmlns:a']
        assert "http://example.net/" == root['xmlns:b']

    def test_closing_namespaced_tag(self):
        markup = '
20010504
'
        soup = self.soup(markup)
        assert str(soup.p) == markup

    def test_namespaced_attributes(self):
        markup = ''
        soup = self.soup(markup)
        assert str(soup.foo) == markup

    def test_namespaced_attributes_xml_namespace(self):
        markup = 'bar'
        soup = self.soup(markup)
        assert str(soup.foo) == markup

    def test_find_by_prefixed_name(self):
        doc = """

    foo
    bar
    baz

"""
        soup = self.soup(doc)

        # There are three  tags.
        assert 3 == len(soup.find_all('tag'))

        # But two of them are ns1:tag and one of them is ns2:tag.
        assert 2 == len(soup.find_all('ns1:tag'))
        assert 1 == len(soup.find_all('ns2:tag'))
        
        assert 1, len(soup.find_all('ns2:tag', key='value'))
        assert 3, len(soup.find_all(['ns1:tag', 'ns2:tag']))
        
    def test_copy_tag_preserves_namespace(self):
        xml = """
"""
    
        soup = self.soup(xml)
        tag = soup.document
        duplicate = copy.copy(tag)

        # The two tags have the same namespace prefix.
        assert 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 = ""
        soup = self.soup(markup)
        assert "http://www.w3.org/1999/xhtml" == soup.a.namespace

    def test_svg_tags_have_namespace(self):
        markup = ''
        soup = self.soup(markup)
        namespace = "http://www.w3.org/2000/svg"
        assert namespace == soup.svg.namespace
        assert namespace == soup.circle.namespace


    def test_mathml_tags_have_namespace(self):
        markup = '5'
        soup = self.soup(markup)
        namespace = 'http://www.w3.org/1998/Math/MathML'
        assert namespace == soup.math.namespace
        assert namespace == soup.msqrt.namespace

    def test_xml_declaration_becomes_comment(self):
        markup = ''
        soup = self.soup(markup)
        assert isinstance(soup.contents[0], Comment)
        assert soup.contents[0] == '?xml version="1.0" encoding="utf-8"?'
        assert "html" == soup.contents[0].next_element.name
beautifulsoup4-4.12.3/bs4/tests/test_builder.py0000644000000000000000000000213313615410400016364 0ustar00import pytest
from unittest.mock import patch
from bs4.builder import DetectsXMLParsedAsHTML

class TestDetectsXMLParsedAsHTML(object):

    @pytest.mark.parametrize(
        "markup,looks_like_xml",
        [("No xml declaration", False),
         ("obviously HTMLActually XHTML", False),
         ("            <    html>Tricky XHTML", False),
         ("", True),
        ]
    )
    def test_warn_if_markup_looks_like_xml(self, markup, looks_like_xml):
        # Test of our ability to guess at whether markup looks XML-ish
        # _and_ not HTML-ish.
        with patch('bs4.builder.DetectsXMLParsedAsHTML._warn') as mock:
            for data in markup, markup.encode('utf8'):
                result = DetectsXMLParsedAsHTML.warn_if_markup_looks_like_xml(
                    data
                )
                assert result == looks_like_xml
                if looks_like_xml:
                    assert mock.called
                else:
                    assert not mock.called
                mock.reset_mock()
beautifulsoup4-4.12.3/bs4/tests/test_builder_registry.py0000644000000000000000000001177213615410400020325 0ustar00"""Tests of the builder registry."""

import pytest
import warnings

from bs4 import BeautifulSoup
from bs4.builder import (
    builder_registry as registry,
    HTMLParserTreeBuilder,
    TreeBuilderRegistry,
)

from . import (
    HTML5LIB_PRESENT,
    LXML_PRESENT,
)

if HTML5LIB_PRESENT:
    from bs4.builder import HTML5TreeBuilder

if LXML_PRESENT:
    from bs4.builder import (
        LXMLTreeBuilderForXML,
        LXMLTreeBuilder,
        )


# TODO: Split out the lxml and html5lib tests into their own classes
# and gate with pytest.mark.skipIf.
class TestBuiltInRegistry(object):
    """Test the built-in registry with the default builders registered."""

    def test_combination(self):
        assert registry.lookup('strict', 'html') == HTMLParserTreeBuilder
        if LXML_PRESENT:
            assert registry.lookup('fast', 'html') == LXMLTreeBuilder
            assert registry.lookup('permissive', 'xml') == LXMLTreeBuilderForXML
        if HTML5LIB_PRESENT:
            assert registry.lookup('html5lib', 'html') == HTML5TreeBuilder

    def test_lookup_by_markup_type(self):
        if LXML_PRESENT:
            assert registry.lookup('html') == LXMLTreeBuilder
            assert registry.lookup('xml') == LXMLTreeBuilderForXML
        else:
            assert registry.lookup('xml') == None
            if HTML5LIB_PRESENT:
                assert registry.lookup('html') == HTML5TreeBuilder
            else:
                assert registry.lookup('html') == HTMLParserTreeBuilder

    def test_named_library(self):
        if LXML_PRESENT:
            assert registry.lookup('lxml', 'xml') == LXMLTreeBuilderForXML
            assert registry.lookup('lxml', 'html') == LXMLTreeBuilder
        if HTML5LIB_PRESENT:
            assert registry.lookup('html5lib') == HTML5TreeBuilder

        assert registry.lookup('html.parser') == HTMLParserTreeBuilder

    def test_beautifulsoup_constructor_does_lookup(self):

        with warnings.catch_warnings(record=True) as w:
            # This will create a warning about not explicitly
            # specifying a parser, but we'll ignore it.

            # You can pass in a string.
            BeautifulSoup("", features="html")
            # Or a list of strings.
            BeautifulSoup("", features=["html", "fast"])
            pass
            
        # You'll get an exception if BS can't find an appropriate
        # builder.
        with pytest.raises(ValueError):
            BeautifulSoup("", features="no-such-feature")

class TestRegistry(object):
    """Test the TreeBuilderRegistry class in general."""

    def setup_method(self):
        self.registry = TreeBuilderRegistry()

    def builder_for_features(self, *feature_list):
        cls = type('Builder_' + '_'.join(feature_list),
                   (object,), {'features' : feature_list})

        self.registry.register(cls)
        return cls

    def test_register_with_no_features(self):
        builder = self.builder_for_features()

        # Since the builder advertises no features, you can't find it
        # by looking up features.
        assert self.registry.lookup('foo') is None

        # But you can find it by doing a lookup with no features, if
        # this happens to be the only registered builder.
        assert self.registry.lookup() == builder

    def test_register_with_features_makes_lookup_succeed(self):
        builder = self.builder_for_features('foo', 'bar')
        assert self.registry.lookup('foo') is builder
        assert self.registry.lookup('bar') is builder

    def test_lookup_fails_when_no_builder_implements_feature(self):
        builder = self.builder_for_features('foo', 'bar')
        assert self.registry.lookup('baz') is None

    def test_lookup_gets_most_recent_registration_when_no_feature_specified(self):
        builder1 = self.builder_for_features('foo')
        builder2 = self.builder_for_features('bar')
        assert self.registry.lookup() == builder2

    def test_lookup_fails_when_no_tree_builders_registered(self):
        assert self.registry.lookup() is None

    def test_lookup_gets_most_recent_builder_supporting_all_features(self):
        has_one = self.builder_for_features('foo')
        has_the_other = self.builder_for_features('bar')
        has_both_early = self.builder_for_features('foo', 'bar', 'baz')
        has_both_late = self.builder_for_features('foo', 'bar', 'quux')
        lacks_one = self.builder_for_features('bar')
        has_the_other = self.builder_for_features('foo')

        # There are two builders featuring 'foo' and 'bar', but
        # the one that also features 'quux' was registered later.
        assert self.registry.lookup('foo', 'bar') == has_both_late

        # There is only one builder featuring 'foo', 'bar', and 'baz'.
        assert self.registry.lookup('foo', 'bar', 'baz') == has_both_early

    def test_lookup_fails_when_cannot_reconcile_requested_features(self):
        builder1 = self.builder_for_features('foo', 'bar')
        builder2 = self.builder_for_features('foo', 'baz')
        assert self.registry.lookup('bar', 'baz') is None
beautifulsoup4-4.12.3/bs4/tests/test_css.py0000644000000000000000000004157713615410400015545 0ustar00import pytest
import types
from unittest.mock import MagicMock

from bs4 import (
    CSS,
    BeautifulSoup,
    ResultSet,
)

from . import (
    SoupTest,
    SOUP_SIEVE_PRESENT,
)

if SOUP_SIEVE_PRESENT:
    from soupsieve import SelectorSyntaxError


@pytest.mark.skipif(not SOUP_SIEVE_PRESENT, reason="Soup Sieve not installed")
class TestCSSSelectors(SoupTest):
    """Test basic CSS selector functionality.

    This functionality is implemented in soupsieve, which has a much
    more comprehensive test suite, so this is basically an extra check
    that soupsieve works as expected.
    """

    HTML = """



The title



Hello there.





An H1


Some text


Some more text


An H2


Another

Bob

Another H2

me

span1a1
span1a2 test

span2a1

















English


English UK


English US


French





"""

    def setup_method(self):
        self.soup = BeautifulSoup(self.HTML, 'html.parser')

    def assert_selects(self, selector, expected_ids, **kwargs):
        results = self.soup.select(selector, **kwargs)
        assert isinstance(results, ResultSet)
        el_ids = [el['id'] for el in results]
        el_ids.sort()
        expected_ids.sort()
        assert expected_ids == el_ids, "Selector %s, expected [%s], got [%s]" % (
                selector, ', '.join(expected_ids), ', '.join(el_ids)
        )

    assertSelect = assert_selects

    def assert_select_multiple(self, *tests):
        for selector, expected_ids in tests:
            self.assert_selects(selector, expected_ids)

    def test_precompiled(self):
        sel = self.soup.css.compile('div')

        els = self.soup.select(sel)
        assert len(els) == 4
        for div in els:
            assert div.name == 'div'

        el = self.soup.select_one(sel)
        assert 'main' == el['id']

    def test_one_tag_one(self):
        els = self.soup.select('title')
        assert len(els) == 1
        assert els[0].name == 'title'
        assert els[0].contents == ['The title']

    def test_one_tag_many(self):
        els = self.soup.select('div')
        assert len(els) == 4
        for div in els:
            assert div.name == 'div'

        el = self.soup.select_one('div')
        assert 'main' == el['id']

    def test_select_one_returns_none_if_no_match(self):
        match = self.soup.select_one('nonexistenttag')
        assert None == match


    def test_tag_in_tag_one(self):
        els = self.soup.select('div div')
        self.assert_selects('div div', ['inner', 'data1'])

    def test_tag_in_tag_many(self):
        for selector in ('html div', 'html body div', 'body div'):
            self.assert_selects(selector, ['data1', 'main', 'inner', 'footer'])


    def test_limit(self):
        self.assert_selects('html div', ['main'], limit=1)
        self.assert_selects('html body div', ['inner', 'main'], limit=2)
        self.assert_selects('body div', ['data1', 'main', 'inner', 'footer'],
                           limit=10)

    def test_tag_no_match(self):
        assert len(self.soup.select('del')) == 0

    def test_invalid_tag(self):
        with pytest.raises(SelectorSyntaxError):
            self.soup.select('tag%t')

    def test_select_dashed_tag_ids(self):
        self.assert_selects('custom-dashed-tag', ['dash1', 'dash2'])

    def test_select_dashed_by_id(self):
        dashed = self.soup.select('custom-dashed-tag[id=\"dash2\"]')
        assert dashed[0].name == 'custom-dashed-tag'
        assert dashed[0]['id'] == 'dash2'

    def test_dashed_tag_text(self):
        assert self.soup.select('body > custom-dashed-tag')[0].text == 'Hello there.'

    def test_select_dashed_matches_find_all(self):
        assert self.soup.select('custom-dashed-tag') == self.soup.find_all('custom-dashed-tag')

    def test_header_tags(self):
        self.assert_select_multiple(
            ('h1', ['header1']),
            ('h2', ['header2', 'header3']),
        )

    def test_class_one(self):
        for selector in ('.onep', 'p.onep', 'html p.onep'):
            els = self.soup.select(selector)
            assert len(els) == 1
            assert els[0].name == 'p'
            assert els[0]['class'] == ['onep']

    def test_class_mismatched_tag(self):
        els = self.soup.select('div.onep')
        assert len(els) == 0

    def test_one_id(self):
        for selector in ('div#inner', '#inner', 'div div#inner'):
            self.assert_selects(selector, ['inner'])

    def test_bad_id(self):
        els = self.soup.select('#doesnotexist')
        assert len(els) == 0

    def test_items_in_id(self):
        els = self.soup.select('div#inner p')
        assert len(els) == 3
        for el in els:
            assert el.name == 'p'
        assert els[1]['class'] == ['onep']
        assert not els[0].has_attr('class')

    def test_a_bunch_of_emptys(self):
        for selector in ('div#main del', 'div#main div.oops', 'div div#main'):
            assert len(self.soup.select(selector)) == 0

    def test_multi_class_support(self):
        for selector in ('.class1', 'p.class1', '.class2', 'p.class2',
            '.class3', 'p.class3', 'html p.class2', 'div#inner .class2'):
            self.assert_selects(selector, ['pmulti'])

    def test_multi_class_selection(self):
        for selector in ('.class1.class3', '.class3.class2',
                         '.class1.class2.class3'):
            self.assert_selects(selector, ['pmulti'])

    def test_child_selector(self):
        self.assert_selects('.s1 > a', ['s1a1', 's1a2'])
        self.assert_selects('.s1 > a span', ['s1a2s1'])

    def test_child_selector_id(self):
        self.assert_selects('.s1 > a#s1a2 span', ['s1a2s1'])

    def test_attribute_equals(self):
        self.assert_select_multiple(
            ('p[class="onep"]', ['p1']),
            ('p[id="p1"]', ['p1']),
            ('[class="onep"]', ['p1']),
            ('[id="p1"]', ['p1']),
            ('link[rel="stylesheet"]', ['l1']),
            ('link[type="text/css"]', ['l1']),
            ('link[href="blah.css"]', ['l1']),
            ('link[href="no-blah.css"]', []),
            ('[rel="stylesheet"]', ['l1']),
            ('[type="text/css"]', ['l1']),
            ('[href="blah.css"]', ['l1']),
            ('[href="no-blah.css"]', []),
            ('p[href="no-blah.css"]', []),
            ('[href="no-blah.css"]', []),
        )

    def test_attribute_tilde(self):
        self.assert_select_multiple(
            ('p[class~="class1"]', ['pmulti']),
            ('p[class~="class2"]', ['pmulti']),
            ('p[class~="class3"]', ['pmulti']),
            ('[class~="class1"]', ['pmulti']),
            ('[class~="class2"]', ['pmulti']),
            ('[class~="class3"]', ['pmulti']),
            ('a[rel~="friend"]', ['bob']),
            ('a[rel~="met"]', ['bob']),
            ('[rel~="friend"]', ['bob']),
            ('[rel~="met"]', ['bob']),
        )

    def test_attribute_startswith(self):
        self.assert_select_multiple(
            ('[rel^="style"]', ['l1']),
            ('link[rel^="style"]', ['l1']),
            ('notlink[rel^="notstyle"]', []),
            ('[rel^="notstyle"]', []),
            ('link[rel^="notstyle"]', []),
            ('link[href^="bla"]', ['l1']),
            ('a[href^="http://"]', ['bob', 'me']),
            ('[href^="http://"]', ['bob', 'me']),
            ('[id^="p"]', ['pmulti', 'p1']),
            ('[id^="m"]', ['me', 'main']),
            ('div[id^="m"]', ['main']),
            ('a[id^="m"]', ['me']),
            ('div[data-tag^="dashed"]', ['data1'])
        )

    def test_attribute_endswith(self):
        self.assert_select_multiple(
            ('[href$=".css"]', ['l1']),
            ('link[href$=".css"]', ['l1']),
            ('link[id$="1"]', ['l1']),
            ('[id$="1"]', ['data1', 'l1', 'p1', 'header1', 's1a1', 's2a1', 's1a2s1', 'dash1']),
            ('div[id$="1"]', ['data1']),
            ('[id$="noending"]', []),
        )

    def test_attribute_contains(self):
        self.assert_select_multiple(
            # From test_attribute_startswith
            ('[rel*="style"]', ['l1']),
            ('link[rel*="style"]', ['l1']),
            ('notlink[rel*="notstyle"]', []),
            ('[rel*="notstyle"]', []),
            ('link[rel*="notstyle"]', []),
            ('link[href*="bla"]', ['l1']),
            ('[href*="http://"]', ['bob', 'me']),
            ('[id*="p"]', ['pmulti', 'p1']),
            ('div[id*="m"]', ['main']),
            ('a[id*="m"]', ['me']),
            # From test_attribute_endswith
            ('[href*=".css"]', ['l1']),
            ('link[href*=".css"]', ['l1']),
            ('link[id*="1"]', ['l1']),
            ('[id*="1"]', ['data1', 'l1', 'p1', 'header1', 's1a1', 's1a2', 's2a1', 's1a2s1', 'dash1']),
            ('div[id*="1"]', ['data1']),
            ('[id*="noending"]', []),
            # New for this test
            ('[href*="."]', ['bob', 'me', 'l1']),
            ('a[href*="."]', ['bob', 'me']),
            ('link[href*="."]', ['l1']),
            ('div[id*="n"]', ['main', 'inner']),
            ('div[id*="nn"]', ['inner']),
            ('div[data-tag*="edval"]', ['data1'])
        )

    def test_attribute_exact_or_hypen(self):
        self.assert_select_multiple(
            ('p[lang|="en"]', ['lang-en', 'lang-en-gb', 'lang-en-us']),
            ('[lang|="en"]', ['lang-en', 'lang-en-gb', 'lang-en-us']),
            ('p[lang|="fr"]', ['lang-fr']),
            ('p[lang|="gb"]', []),
        )

    def test_attribute_exists(self):
        self.assert_select_multiple(
            ('[rel]', ['l1', 'bob', 'me']),
            ('link[rel]', ['l1']),
            ('a[rel]', ['bob', 'me']),
            ('[lang]', ['lang-en', 'lang-en-gb', 'lang-en-us', 'lang-fr']),
            ('p[class]', ['p1', 'pmulti']),
            ('[blah]', []),
            ('p[blah]', []),
            ('div[data-tag]', ['data1'])
        )

    def test_quoted_space_in_selector_name(self):
        html = """
nope

        
yes

        """
        soup = BeautifulSoup(html, 'html.parser')
        [chosen] = soup.select('div[style="display: right"]')
        assert "yes" == chosen.string

    def test_unsupported_pseudoclass(self):
        with pytest.raises(NotImplementedError):
            self.soup.select("a:no-such-pseudoclass")

        with pytest.raises(SelectorSyntaxError):
            self.soup.select("a:nth-of-type(a)")

    def test_nth_of_type(self):
        # Try to select first paragraph
        els = self.soup.select('div#inner p:nth-of-type(1)')
        assert len(els) == 1
        assert els[0].string == 'Some text'

        # Try to select third paragraph
        els = self.soup.select('div#inner p:nth-of-type(3)')
        assert len(els) == 1
        assert els[0].string == 'Another'

        # Try to select (non-existent!) fourth paragraph
        els = self.soup.select('div#inner p:nth-of-type(4)')
        assert len(els) == 0

        # Zero will select no tags.
        els = self.soup.select('div p:nth-of-type(0)')
        assert len(els) == 0

    def test_nth_of_type_direct_descendant(self):
        els = self.soup.select('div#inner > p:nth-of-type(1)')
        assert len(els) == 1
        assert els[0].string == 'Some text'

    def test_id_child_selector_nth_of_type(self):
        self.assert_selects('#inner > p:nth-of-type(2)', ['p1'])

    def test_select_on_element(self):
        # Other tests operate on the tree; this operates on an element
        # within the tree.
        inner = self.soup.find("div", id="main")
        selected = inner.select("div")
        # The 
 tag was selected. The