mirror of
https://github.com/django/django.git
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233 lines
9.8 KiB
Python
233 lines
9.8 KiB
Python
# -*- coding: utf-8 -*-
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from __future__ import unicode_literals
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import os
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from datetime import datetime
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from django.test import SimpleTestCase
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from django.utils import html, safestring, six
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from django.utils._os import upath
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from django.utils.encoding import force_text
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from django.utils.functional import lazystr
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class TestUtilsHtml(SimpleTestCase):
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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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self.check_output(f, lazystr(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("{} {} {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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self.check_output(f, lazystr(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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# caused infinite loop on Pythons not patched with
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# http://bugs.python.org/issue20288
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('&gotcha&#;<>', '&gotcha&#;<>'),
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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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self.check_output(f, lazystr(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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self.check_output(f, lazystr(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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self.check_output(f, lazystr(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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(
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'and lots of whitespace: \r\n\t\v\f\b',
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'and lots of whitespace: \\u000D\\u000A\\u0009\\u000B\\u000C\\u0008'
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),
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(r'<script>and this</script>', '\\u003Cscript\\u003Eand this\\u003C/script\\u003E'),
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(
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'paragraph separator:\u2029and line separator:\u2028',
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'paragraph separator:\\u2029and line separator:\\u2028'
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),
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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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self.check_output(f, lazystr(value), 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+3&z='), 'http://example.com/?x=1&y=2+3&z=')
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self.assertEqual(quote('http://example.com/?x=<>"\''), 'http://example.com/?x=%3C%3E%22%27')
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self.assertEqual(quote('http://example.com/?q=http://example.com/?x=1%26q=django'),
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'http://example.com/?q=http%3A%2F%2Fexample.com%2F%3Fx%3D1%26q%3Ddjango')
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self.assertEqual(quote('http://example.com/?q=http%3A%2F%2Fexample.com%2F%3Fx%3D1%26q%3Ddjango'),
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'http://example.com/?q=http%3A%2F%2Fexample.com%2F%3Fx%3D1%26q%3Ddjango')
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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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def test_html_safe(self):
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@html.html_safe
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class HtmlClass(object):
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if six.PY2:
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def __unicode__(self):
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return "<h1>I'm a html class!</h1>"
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else:
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def __str__(self):
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return "<h1>I'm a html class!</h1>"
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html_obj = HtmlClass()
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self.assertTrue(hasattr(HtmlClass, '__html__'))
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self.assertTrue(hasattr(html_obj, '__html__'))
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self.assertEqual(force_text(html_obj), html_obj.__html__())
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def test_html_safe_subclass(self):
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if six.PY2:
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class BaseClass(object):
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def __html__(self):
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# defines __html__ on its own
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return 'some html content'
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def __unicode__(self):
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return 'some non html content'
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@html.html_safe
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class Subclass(BaseClass):
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def __unicode__(self):
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# overrides __unicode__ and is marked as html_safe
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return 'some html safe content'
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else:
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class BaseClass(object):
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def __html__(self):
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# defines __html__ on its own
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return 'some html content'
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def __str__(self):
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return 'some non html content'
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@html.html_safe
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class Subclass(BaseClass):
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def __str__(self):
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# overrides __str__ and is marked as html_safe
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return 'some html safe content'
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subclass_obj = Subclass()
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self.assertEqual(force_text(subclass_obj), subclass_obj.__html__())
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def test_html_safe_defines_html_error(self):
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msg = "can't apply @html_safe to HtmlClass because it defines __html__()."
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with self.assertRaisesMessage(ValueError, msg):
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@html.html_safe
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class HtmlClass(object):
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def __html__(self):
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return "<h1>I'm a html class!</h1>"
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def test_html_safe_doesnt_define_str(self):
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method_name = '__unicode__()' if six.PY2 else '__str__()'
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msg = "can't apply @html_safe to HtmlClass because it doesn't define %s." % method_name
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with self.assertRaisesMessage(ValueError, msg):
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@html.html_safe
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class HtmlClass(object):
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pass
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