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"""
Tests for django.utils.
"""
from unittest import TestCase
from django.utils import html
class TestUtilsHtml(TestCase):
def check_output(self, function, value, output=None):
"""
Check that function(value) equals output. If output is None,
check that function(value) equals value.
"""
if output is None:
output = value
self.assertEqual(function(value), output)
def test_escape(self):
f = html.escape
items = (
('&','&'),
('<', '<'),
('>', '>'),
('"', '"'),
("'", '''),
)
# Substitution patterns for testing the above items.
patterns = ("%s", "asdf%sfdsa", "%s1", "1%sb")
for value, output in items:
for pattern in patterns:
self.check_output(f, pattern % value, pattern % output)
# Check repeated values.
self.check_output(f, value * 2, output * 2)
# Verify it doesn't double replace &.
self.check_output(f, '<&', '<&')
def test_linebreaks(self):
f = html.linebreaks
items = (
("para1\n\npara2\r\rpara3", "<p>para1</p>\n\n<p>para2</p>\n\n<p>para3</p>"),
("para1\nsub1\rsub2\n\npara2", "<p>para1<br />sub1<br />sub2</p>\n\n<p>para2</p>"),
("para1\r\n\r\npara2\rsub1\r\rpara4", "<p>para1</p>\n\n<p>para2<br />sub1</p>\n\n<p>para4</p>"),
("para1\tmore\n\npara2", "<p>para1\tmore</p>\n\n<p>para2</p>"),
)
for value, output in items:
self.check_output(f, value, output)
def test_strip_tags(self):
f = html.strip_tags
items = (
('<adf>a', 'a'),
('</adf>a', 'a'),
('<asdf><asdf>e', 'e'),
('<f', '<f'),
('</fe', '</fe'),
('<x>b<y>', 'b'),
)
for value, output in items:
self.check_output(f, value, output)
def test_strip_spaces_between_tags(self):
f = html.strip_spaces_between_tags
# Strings that should come out untouched.
items = (' <adf>', '<adf> ', ' </adf> ', ' <f> x</f>')
for value in items:
self.check_output(f, value)
# Strings that have spaces to strip.
items = (
('<d> </d>', '<d></d>'),
('<p>hello </p>\n<p> world</p>', '<p>hello </p><p> world</p>'),
('\n<p>\t</p>\n<p> </p>\n', '\n<p></p><p></p>\n'),
)
for value, output in items:
self.check_output(f, value, output)
def test_strip_entities(self):
f = html.strip_entities
# Strings that should come out untouched.
values = ("&", "&a", "&a", "a&#a")
for value in values:
self.check_output(f, value)
# Valid entities that should be stripped from the patterns.
entities = ("", "", "&a;", "&fdasdfasdfasdf;")
patterns = (
("asdf %(entity)s ", "asdf "),
("%(entity)s%(entity)s", ""),
("&%(entity)s%(entity)s", "&"),
("%(entity)s3", "3"),
)
for entity in entities:
for in_pattern, output in patterns:
self.check_output(f, in_pattern % {'entity': entity}, output)
def test_fix_ampersands(self):
f = html.fix_ampersands
# Strings without ampersands or with ampersands already encoded.
values = ("a", "b", "&a;", "& &x; ", "asdf")
patterns = (
("%s", "%s"),
("&%s", "&%s"),
("&%s&", "&%s&"),
)
for value in values:
for in_pattern, out_pattern in patterns:
self.check_output(f, in_pattern % value, out_pattern % value)
# Strings with ampersands that need encoding.
items = (
("&#;", "&#;"),
("ͫ ;", "&#875 ;"),
("abc;", "&#4abc;"),
)
for value, output in items:
self.check_output(f, value, output)
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