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227 lines
8.2 KiB
227 lines
8.2 KiB
from __future__ import absolute_import, division, unicode_literals
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import os
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import json
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import pytest
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from .support import get_data_files
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from html5lib import constants
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from html5lib.filters.lint import Filter as Lint
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from html5lib.serializer import HTMLSerializer, serialize
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from html5lib.treewalkers.base import TreeWalker
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# pylint:disable=wrong-import-position
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optionals_loaded = []
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try:
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from lxml import etree
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optionals_loaded.append("lxml")
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except ImportError:
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pass
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# pylint:enable=wrong-import-position
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default_namespace = constants.namespaces["html"]
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class JsonWalker(TreeWalker):
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def __iter__(self):
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for token in self.tree:
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type = token[0]
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if type == "StartTag":
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if len(token) == 4:
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namespace, name, attrib = token[1:4]
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else:
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namespace = default_namespace
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name, attrib = token[1:3]
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yield self.startTag(namespace, name, self._convertAttrib(attrib))
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elif type == "EndTag":
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if len(token) == 3:
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namespace, name = token[1:3]
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else:
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namespace = default_namespace
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name = token[1]
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yield self.endTag(namespace, name)
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elif type == "EmptyTag":
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if len(token) == 4:
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namespace, name, attrib = token[1:]
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else:
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namespace = default_namespace
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name, attrib = token[1:]
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for token in self.emptyTag(namespace, name, self._convertAttrib(attrib)):
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yield token
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elif type == "Comment":
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yield self.comment(token[1])
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elif type in ("Characters", "SpaceCharacters"):
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for token in self.text(token[1]):
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yield token
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elif type == "Doctype":
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if len(token) == 4:
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yield self.doctype(token[1], token[2], token[3])
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elif len(token) == 3:
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yield self.doctype(token[1], token[2])
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else:
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yield self.doctype(token[1])
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else:
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raise ValueError("Unknown token type: " + type)
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def _convertAttrib(self, attribs):
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"""html5lib tree-walkers use a dict of (namespace, name): value for
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attributes, but JSON cannot represent this. Convert from the format
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in the serializer tests (a list of dicts with "namespace", "name",
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and "value" as keys) to html5lib's tree-walker format."""
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attrs = {}
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for attrib in attribs:
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name = (attrib["namespace"], attrib["name"])
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assert(name not in attrs)
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attrs[name] = attrib["value"]
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return attrs
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def serialize_html(input, options):
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options = {str(k): v for k, v in options.items()}
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encoding = options.get("encoding", None)
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if "encoding" in options:
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del options["encoding"]
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stream = Lint(JsonWalker(input), False)
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serializer = HTMLSerializer(alphabetical_attributes=True, **options)
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return serializer.render(stream, encoding)
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def throwsWithLatin1(input):
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with pytest.raises(UnicodeEncodeError):
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serialize_html(input, {"encoding": "iso-8859-1"})
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def testDoctypeName():
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throwsWithLatin1([["Doctype", "\u0101"]])
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def testDoctypePublicId():
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throwsWithLatin1([["Doctype", "potato", "\u0101"]])
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def testDoctypeSystemId():
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throwsWithLatin1([["Doctype", "potato", "potato", "\u0101"]])
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def testCdataCharacters():
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test_serializer([["StartTag", "http://www.w3.org/1999/xhtml", "style", {}], ["Characters", "\u0101"]],
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["<style>ā"], {"encoding": "iso-8859-1"})
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def testCharacters():
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test_serializer([["Characters", "\u0101"]],
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["ā"], {"encoding": "iso-8859-1"})
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def testStartTagName():
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throwsWithLatin1([["StartTag", "http://www.w3.org/1999/xhtml", "\u0101", []]])
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def testAttributeName():
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throwsWithLatin1([["StartTag", "http://www.w3.org/1999/xhtml", "span", [{"namespace": None, "name": "\u0101", "value": "potato"}]]])
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def testAttributeValue():
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test_serializer([["StartTag", "http://www.w3.org/1999/xhtml", "span",
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[{"namespace": None, "name": "potato", "value": "\u0101"}]]],
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["<span potato=ā>"], {"encoding": "iso-8859-1"})
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def testEndTagName():
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throwsWithLatin1([["EndTag", "http://www.w3.org/1999/xhtml", "\u0101"]])
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def testComment():
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throwsWithLatin1([["Comment", "\u0101"]])
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def testThrowsUnknownOption():
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with pytest.raises(TypeError):
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HTMLSerializer(foobar=None)
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@pytest.mark.parametrize("c", list("\t\n\u000C\x20\r\"'=<>`"))
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def testSpecQuoteAttribute(c):
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input_ = [["StartTag", "http://www.w3.org/1999/xhtml", "span",
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[{"namespace": None, "name": "foo", "value": c}]]]
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if c == '"':
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output_ = ["<span foo='%s'>" % c]
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else:
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output_ = ['<span foo="%s">' % c]
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options_ = {"quote_attr_values": "spec"}
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test_serializer(input_, output_, options_)
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@pytest.mark.parametrize("c", list("\t\n\u000C\x20\r\"'=<>`"
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"\x00\x01\x02\x03\x04\x05\x06\x07\x08\t\n"
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"\x0b\x0c\r\x0e\x0f\x10\x11\x12\x13\x14\x15"
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"\x16\x17\x18\x19\x1a\x1b\x1c\x1d\x1e\x1f"
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"\x20\x2f\x60\xa0\u1680\u180e\u180f\u2000"
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"\u2001\u2002\u2003\u2004\u2005\u2006\u2007"
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"\u2008\u2009\u200a\u2028\u2029\u202f\u205f"
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"\u3000"))
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def testLegacyQuoteAttribute(c):
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input_ = [["StartTag", "http://www.w3.org/1999/xhtml", "span",
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[{"namespace": None, "name": "foo", "value": c}]]]
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if c == '"':
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output_ = ["<span foo='%s'>" % c]
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else:
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output_ = ['<span foo="%s">' % c]
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options_ = {"quote_attr_values": "legacy"}
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test_serializer(input_, output_, options_)
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@pytest.fixture
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def lxml_parser():
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return etree.XMLParser(resolve_entities=False)
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@pytest.mark.skipif("lxml" not in optionals_loaded, reason="lxml not importable")
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def testEntityReplacement(lxml_parser):
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doc = '<!DOCTYPE html SYSTEM "about:legacy-compat"><html>β</html>'
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tree = etree.fromstring(doc, parser=lxml_parser).getroottree()
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result = serialize(tree, tree="lxml", omit_optional_tags=False)
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assert result == '<!DOCTYPE html SYSTEM "about:legacy-compat"><html>\u03B2</html>'
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@pytest.mark.skipif("lxml" not in optionals_loaded, reason="lxml not importable")
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def testEntityXML(lxml_parser):
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doc = '<!DOCTYPE html SYSTEM "about:legacy-compat"><html>></html>'
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tree = etree.fromstring(doc, parser=lxml_parser).getroottree()
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result = serialize(tree, tree="lxml", omit_optional_tags=False)
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assert result == '<!DOCTYPE html SYSTEM "about:legacy-compat"><html>></html>'
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@pytest.mark.skipif("lxml" not in optionals_loaded, reason="lxml not importable")
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def testEntityNoResolve(lxml_parser):
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doc = '<!DOCTYPE html SYSTEM "about:legacy-compat"><html>β</html>'
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tree = etree.fromstring(doc, parser=lxml_parser).getroottree()
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result = serialize(tree, tree="lxml", omit_optional_tags=False,
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resolve_entities=False)
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assert result == '<!DOCTYPE html SYSTEM "about:legacy-compat"><html>β</html>'
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def param_serializer():
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for filename in get_data_files('serializer-testdata', '*.test', os.path.dirname(__file__)):
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with open(filename) as fp:
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tests = json.load(fp)
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for test in tests['tests']:
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yield test["input"], test["expected"], test.get("options", {})
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@pytest.mark.parametrize("input, expected, options", param_serializer())
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def test_serializer(input, expected, options):
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encoding = options.get("encoding", None)
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if encoding:
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expected = list(map(lambda x: x.encode(encoding), expected))
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result = serialize_html(input, options)
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if len(expected) == 1:
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assert expected[0] == result, "Expected:\n%s\nActual:\n%s\nOptions:\n%s" % (expected[0], result, str(options))
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elif result not in expected:
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assert False, "Expected: %s, Received: %s" % (expected, result)
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