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# -*- coding: utf-8 -*-
from __future__ import unicode_literals
from unittest import skipUnless
import warnings
from django.test import SimpleTestCase
from django.utils import six, text
from django.utils.deprecation import RemovedInDjango19Warning
IS_WIDE_BUILD = (len('\U0001F4A9') == 1)
class TestUtilsText(SimpleTestCase):
def test_truncate_chars(self):
truncator = text.Truncator(
'The quick brown fox jumped over the lazy dog.'
)
self.assertEqual('The quick brown fox jumped over the lazy dog.',
truncator.chars(100)),
self.assertEqual('The quick brown fox ...',
truncator.chars(23)),
self.assertEqual('The quick brown fo.....',
truncator.chars(23, '.....')),
# Ensure that we normalize our unicode data first
nfc = text.Truncator('o\xfco\xfco\xfco\xfc')
nfd = text.Truncator('ou\u0308ou\u0308ou\u0308ou\u0308')
self.assertEqual('oüoüoüoü', nfc.chars(8))
self.assertEqual('oüoüoüoü', nfd.chars(8))
self.assertEqual('oü...', nfc.chars(5))
self.assertEqual('oü...', nfd.chars(5))
# Ensure the final length is calculated correctly when there are
# combining characters with no precomposed form, and that combining
# characters are not split up.
truncator = text.Truncator('-B\u030AB\u030A----8')
self.assertEqual('-B\u030A...', truncator.chars(5))
self.assertEqual('-B\u030AB\u030A-...', truncator.chars(7))
self.assertEqual('-B\u030AB\u030A----8', truncator.chars(8))
# Ensure the length of the end text is correctly calculated when it
# contains combining characters with no precomposed form.
truncator = text.Truncator('-----')
self.assertEqual('---B\u030A', truncator.chars(4, 'B\u030A'))
self.assertEqual('-----', truncator.chars(5, 'B\u030A'))
# Make a best effort to shorten to the desired length, but requesting
# a length shorter than the ellipsis shouldn't break
self.assertEqual('...', text.Truncator('asdf').chars(1))
def test_truncate_words(self):
truncator = text.Truncator('The quick brown fox jumped over the lazy '
'dog.')
self.assertEqual('The quick brown fox jumped over the lazy dog.',
truncator.words(10))
self.assertEqual('The quick brown fox...', truncator.words(4))
self.assertEqual('The quick brown fox[snip]',
truncator.words(4, '[snip]'))
def test_truncate_html_words(self):
truncator = text.Truncator('<p id="par"><strong><em>The quick brown fox'
' jumped over the lazy dog.</em></strong></p>')
self.assertEqual('<p id="par"><strong><em>The quick brown fox jumped over'
' the lazy dog.</em></strong></p>', truncator.words(10, html=True))
self.assertEqual('<p id="par"><strong><em>The quick brown fox...</em>'
'</strong></p>', truncator.words(4, html=True))
self.assertEqual('<p id="par"><strong><em>The quick brown fox....</em>'
'</strong></p>', truncator.words(4, '....', html=True))
self.assertEqual('<p id="par"><strong><em>The quick brown fox</em>'
'</strong></p>', truncator.words(4, '', html=True))
# Test with new line inside tag
truncator = text.Truncator('<p>The quick <a href="xyz.html"\n'
'id="mylink">brown fox</a> jumped over the lazy dog.</p>')
self.assertEqual('<p>The quick <a href="xyz.html"\n'
'id="mylink">brown...</a></p>', truncator.words(3, '...', html=True))
# Test self-closing tags
truncator = text.Truncator('<br/>The <hr />quick brown fox jumped over'
' the lazy dog.')
self.assertEqual('<br/>The <hr />quick brown...',
truncator.words(3, '...', html=True))
truncator = text.Truncator('<br>The <hr/>quick <em>brown fox</em> '
'jumped over the lazy dog.')
self.assertEqual('<br>The <hr/>quick <em>brown...</em>',
truncator.words(3, '...', html=True))
# Test html entities
truncator = text.Truncator('<i>Buenos días!'
' ¿Cómo está?</i>')
self.assertEqual('<i>Buenos días! ¿Cómo...</i>',
truncator.words(3, '...', html=True))
truncator = text.Truncator('<p>I <3 python, what about you?</p>')
self.assertEqual('<p>I <3 python...</p>',
truncator.words(3, '...', html=True))
def test_wrap(self):
digits = '1234 67 9'
self.assertEqual(text.wrap(digits, 100), '1234 67 9')
self.assertEqual(text.wrap(digits, 9), '1234 67 9')
self.assertEqual(text.wrap(digits, 8), '1234 67\n9')
self.assertEqual(text.wrap('short\na long line', 7),
'short\na long\nline')
self.assertEqual(text.wrap('do-not-break-long-words please? ok', 8),
'do-not-break-long-words\nplease?\nok')
long_word = 'l%sng' % ('o' * 20)
self.assertEqual(text.wrap(long_word, 20), long_word)
self.assertEqual(text.wrap('a %s word' % long_word, 10),
'a\n%s\nword' % long_word)
def test_normalize_newlines(self):
self.assertEqual(text.normalize_newlines("abc\ndef\rghi\r\n"),
"abc\ndef\nghi\n")
self.assertEqual(text.normalize_newlines("\n\r\r\n\r"), "\n\n\n\n")
self.assertEqual(text.normalize_newlines("abcdefghi"), "abcdefghi")
self.assertEqual(text.normalize_newlines(""), "")
def test_normalize_newlines_bytes(self):
"""normalize_newlines should be able to handle bytes too"""
normalized = text.normalize_newlines(b"abc\ndef\rghi\r\n")
self.assertEqual(normalized, "abc\ndef\nghi\n")
self.assertIsInstance(normalized, six.text_type)
def test_slugify(self):
items = (
('Hello, World!', 'hello-world'),
('spam & eggs', 'spam-eggs'),
)
for value, output in items:
self.assertEqual(text.slugify(value), output)
def test_unescape_entities(self):
items = [
('', ''),
('foo', 'foo'),
('&', '&'),
('&', '&'),
('&', '&'),
('foo & bar', 'foo & bar'),
('foo & bar', 'foo & bar'),
]
for value, output in items:
self.assertEqual(text.unescape_entities(value), output)
def test_get_valid_filename(self):
filename = "^&'@{}[],$=!-#()%+~_123.txt"
self.assertEqual(text.get_valid_filename(filename), "-_123.txt")
def test_javascript_quote(self):
input = "<script>alert('Hello \\xff.\n Welcome\there\r');</script>"
output = r"<script>alert(\'Hello \\xff.\n Welcome\there\r\');<\/script>"
with warnings.catch_warnings():
warnings.simplefilter("ignore", RemovedInDjango19Warning)
self.assertEqual(text.javascript_quote(input), output)
# Exercising quote_double_quotes keyword argument
input = '"Text"'
self.assertEqual(text.javascript_quote(input), '"Text"')
self.assertEqual(text.javascript_quote(input, quote_double_quotes=True),
'"Text"')
@skipUnless(IS_WIDE_BUILD, 'Not running in a wide build of Python')
def test_javascript_quote_unicode(self):
input = "<script>alert('Hello \\xff.\n Wel𝕃come\there\r');</script>"
output = r"<script>alert(\'Hello \\xff.\n Wel𝕃come\there\r\');<\/script>"
with warnings.catch_warnings():
warnings.simplefilter("ignore", RemovedInDjango19Warning)
self.assertEqual(text.javascript_quote(input), output)
def test_deprecation(self):
with warnings.catch_warnings(record=True) as w:
warnings.simplefilter("always")
text.javascript_quote('thingy')
self.assertEqual(len(w), 1)
self.assertIn('escapejs()', repr(w[0].message))
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