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217 lines
9.1 KiB
Python
217 lines
9.1 KiB
Python
# -*- coding: utf-8 -*-
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from __future__ import unicode_literals
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from datetime import datetime
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import os
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from unittest import TestCase
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import warnings
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from django.utils import html, safestring
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from django.utils._os import upath
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from django.utils.deprecation import RemovedInDjango18Warning
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from django.utils.encoding import force_text
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class TestUtilsHtml(TestCase):
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def check_output(self, function, value, output=None):
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"""
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Check that function(value) equals output. If output is None,
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check that function(value) equals value.
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"""
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if output is None:
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output = value
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self.assertEqual(function(value), output)
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def test_escape(self):
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f = html.escape
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items = (
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('&', '&'),
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('<', '<'),
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('>', '>'),
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('"', '"'),
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("'", '''),
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)
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# Substitution patterns for testing the above items.
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patterns = ("%s", "asdf%sfdsa", "%s1", "1%sb")
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for value, output in items:
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for pattern in patterns:
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self.check_output(f, pattern % value, pattern % output)
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# Check repeated values.
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self.check_output(f, value * 2, output * 2)
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# Verify it doesn't double replace &.
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self.check_output(f, '<&', '<&')
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def test_format_html(self):
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self.assertEqual(
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html.format_html("{0} {1} {third} {fourth}",
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"< Dangerous >",
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html.mark_safe("<b>safe</b>"),
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third="< dangerous again",
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fourth=html.mark_safe("<i>safe again</i>")
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),
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"< Dangerous > <b>safe</b> < dangerous again <i>safe again</i>"
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)
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def test_linebreaks(self):
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f = html.linebreaks
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items = (
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("para1\n\npara2\r\rpara3", "<p>para1</p>\n\n<p>para2</p>\n\n<p>para3</p>"),
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("para1\nsub1\rsub2\n\npara2", "<p>para1<br />sub1<br />sub2</p>\n\n<p>para2</p>"),
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("para1\r\n\r\npara2\rsub1\r\rpara4", "<p>para1</p>\n\n<p>para2<br />sub1</p>\n\n<p>para4</p>"),
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("para1\tmore\n\npara2", "<p>para1\tmore</p>\n\n<p>para2</p>"),
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)
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for value, output in items:
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self.check_output(f, value, output)
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def test_strip_tags(self):
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f = html.strip_tags
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items = (
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('<p>See: 'é is an apostrophe followed by e acute</p>',
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'See: 'é is an apostrophe followed by e acute'),
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('<adf>a', 'a'),
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('</adf>a', 'a'),
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('<asdf><asdf>e', 'e'),
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('hi, <f x', 'hi, <f x'),
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('234<235, right?', '234<235, right?'),
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('a4<a5 right?', 'a4<a5 right?'),
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('b7>b2!', 'b7>b2!'),
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('</fe', '</fe'),
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('<x>b<y>', 'b'),
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('a<p onclick="alert(\'<test>\')">b</p>c', 'abc'),
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('a<p a >b</p>c', 'abc'),
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('d<a:b c:d>e</p>f', 'def'),
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('<strong>foo</strong><a href="http://example.com">bar</a>', 'foobar'),
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)
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for value, output in items:
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self.check_output(f, value, output)
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# Some convoluted syntax for which parsing may differ between python versions
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output = html.strip_tags('<sc<!-- -->ript>test<<!-- -->/script>')
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self.assertNotIn('<script>', output)
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self.assertIn('test', output)
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output = html.strip_tags('<script>alert()</script>&h')
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self.assertNotIn('<script>', output)
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self.assertIn('alert()', output)
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# Test with more lengthy content (also catching performance regressions)
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for filename in ('strip_tags1.html', 'strip_tags2.txt'):
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path = os.path.join(os.path.dirname(upath(__file__)), 'files', filename)
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with open(path, 'r') as fp:
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content = force_text(fp.read())
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start = datetime.now()
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stripped = html.strip_tags(content)
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elapsed = datetime.now() - start
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self.assertEqual(elapsed.seconds, 0)
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self.assertIn("Please try again.", stripped)
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self.assertNotIn('<', stripped)
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def test_strip_spaces_between_tags(self):
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f = html.strip_spaces_between_tags
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# Strings that should come out untouched.
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items = (' <adf>', '<adf> ', ' </adf> ', ' <f> x</f>')
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for value in items:
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self.check_output(f, value)
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# Strings that have spaces to strip.
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items = (
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('<d> </d>', '<d></d>'),
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('<p>hello </p>\n<p> world</p>', '<p>hello </p><p> world</p>'),
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('\n<p>\t</p>\n<p> </p>\n', '\n<p></p><p></p>\n'),
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)
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for value, output in items:
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self.check_output(f, value, output)
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def test_strip_entities(self):
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f = html.strip_entities
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# Strings that should come out untouched.
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values = ("&", "&a", "&a", "a&#a")
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for value in values:
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self.check_output(f, value)
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# Valid entities that should be stripped from the patterns.
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entities = ("", "", "&a;", "&fdasdfasdfasdf;")
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patterns = (
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("asdf %(entity)s ", "asdf "),
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("%(entity)s%(entity)s", ""),
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("&%(entity)s%(entity)s", "&"),
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("%(entity)s3", "3"),
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)
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for entity in entities:
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for in_pattern, output in patterns:
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self.check_output(f, in_pattern % {'entity': entity}, output)
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def test_fix_ampersands(self):
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with warnings.catch_warnings():
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warnings.simplefilter("ignore", RemovedInDjango18Warning)
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f = html.fix_ampersands
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# Strings without ampersands or with ampersands already encoded.
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values = ("a", "b", "&a;", "& &x; ", "asdf")
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patterns = (
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("%s", "%s"),
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("&%s", "&%s"),
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("&%s&", "&%s&"),
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)
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for value in values:
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for in_pattern, out_pattern in patterns:
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self.check_output(f, in_pattern % value, out_pattern % value)
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# Strings with ampersands that need encoding.
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items = (
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("&#;", "&#;"),
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("ͫ ;", "&#875 ;"),
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("abc;", "&#4abc;"),
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)
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for value, output in items:
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self.check_output(f, value, output)
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def test_escapejs(self):
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f = html.escapejs
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items = (
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('"double quotes" and \'single quotes\'', '\\u0022double quotes\\u0022 and \\u0027single quotes\\u0027'),
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(r'\ : backslashes, too', '\\u005C : backslashes, too'),
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('and lots of whitespace: \r\n\t\v\f\b', 'and lots of whitespace: \\u000D\\u000A\\u0009\\u000B\\u000C\\u0008'),
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(r'<script>and this</script>', '\\u003Cscript\\u003Eand this\\u003C/script\\u003E'),
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('paragraph separator:\u2029and line separator:\u2028', 'paragraph separator:\\u2029and line separator:\\u2028'),
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)
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for value, output in items:
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self.check_output(f, value, output)
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def test_clean_html(self):
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f = html.clean_html
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items = (
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('<p>I <i>believe</i> in <b>semantic markup</b>!</p>', '<p>I <em>believe</em> in <strong>semantic markup</strong>!</p>'),
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('I escape & I don\'t <a href="#" target="_blank">target</a>', 'I escape & I don\'t <a href="#" >target</a>'),
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('<p>I kill whitespace</p><br clear="all"><p> </p>', '<p>I kill whitespace</p>'),
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# also a regression test for #7267: this used to raise an UnicodeDecodeError
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('<p>* foo</p><p>* bar</p>', '<ul>\n<li> foo</li><li> bar</li>\n</ul>'),
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)
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with warnings.catch_warnings():
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warnings.simplefilter("ignore", RemovedInDjango18Warning)
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for value, output in items:
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self.check_output(f, value, output)
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def test_remove_tags(self):
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f = html.remove_tags
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items = (
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("<b><i>Yes</i></b>", "b i", "Yes"),
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("<a>x</a> <p><b>y</b></p>", "a b", "x <p>y</p>"),
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)
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for value, tags, output in items:
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self.assertEqual(f(value, tags), output)
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def test_smart_urlquote(self):
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quote = html.smart_urlquote
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# Ensure that IDNs are properly quoted
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self.assertEqual(quote('http://öäü.com/'), 'http://xn--4ca9at.com/')
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self.assertEqual(quote('http://öäü.com/öäü/'), 'http://xn--4ca9at.com/%C3%B6%C3%A4%C3%BC/')
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# Ensure that everything unsafe is quoted, !*'();:@&=+$,/?#[]~ is considered safe as per RFC
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self.assertEqual(quote('http://example.com/path/öäü/'), 'http://example.com/path/%C3%B6%C3%A4%C3%BC/')
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self.assertEqual(quote('http://example.com/%C3%B6/ä/'), 'http://example.com/%C3%B6/%C3%A4/')
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self.assertEqual(quote('http://example.com/?x=1&y=2'), 'http://example.com/?x=1&y=2')
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def test_conditional_escape(self):
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s = '<h1>interop</h1>'
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self.assertEqual(html.conditional_escape(s),
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'<h1>interop</h1>')
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self.assertEqual(html.conditional_escape(safestring.mark_safe(s)), s)
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