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from django.test import TestCase
from askbot.tests.utils import with_settings
from askbot.utils.url_utils import urls_equal
from askbot.utils.html import absolutize_urls
from askbot.utils.html import replace_links_with_text
from askbot.conf import settings as askbot_settings

class UrlUtilsTests(TestCase):
    
    def tests_urls_equal(self):
        e = urls_equal
        self.assertTrue(e('', ''))
        self.assertTrue(e('', '/', True))
        self.assertTrue(e('http://cnn.com', 'http://cnn.com/', True))

        self.assertFalse(e('https://cnn.com', 'http://cnn.com'))
        self.assertFalse(e('http://cnn.com:80', 'http://cnn.com:8000'))

        self.assertTrue(e('http://cnn.com/path', 'http://cnn.com/path/', True))
        self.assertFalse(e('http://cnn.com/path', 'http://cnn.com/path/'))


class ReplaceLinksWithTextTests(TestCase):
    """testing correctness of `askbot.utils.html.replace_links_with_text"""

    def test_local_link_not_replaced(self):
        text = '<a href="/some-link">some link</a>'
        self.assertEqual(replace_links_with_text(text), text) 

    def test_link_without_url_replaced(self):
        text = '<a>some link</a>'
        self.assertEqual(replace_links_with_text(text), 'some link') 

    def test_external_link_without_text_replaced(self):
        text = '<a href="https://example.com/"></a>'
        #in this case we delete the link
        self.assertEqual(replace_links_with_text(text), '') 

    def test_external_link_with_text_replaced(self):
        text = '<a href="https://example.com/">some link</a>'
        self.assertEqual(
            replace_links_with_text(text),
            'https://example.com/ (some link)'
        )

    def test_local_image_not_replaced(self):
        text = '<img src="/some-image.gif"/>'
        self.assertEqual(replace_links_with_text(text), text) 

    def test_local_url_with_hotlinked_image_replaced(self):
        text = '<a href="/some-link"><img src="http://example.com/img.png" alt="picture""> some text</a>'
        self.assertEqual(
            replace_links_with_text(text),
            '<a href="/some-link">http://example.com/img.png (picture) some text</a>'
        )

    def test_hotlinked_image_without_alt_replaced(self):
        text = '<img src="https://example.com/some-image.gif"/>'
        self.assertEqual(
            replace_links_with_text(text),
            'https://example.com/some-image.gif'
        )

    def test_hotlinked_image_with_alt_replaced(self):
        text = '<img src="https://example.com/some-image.gif" alt="picture"/>'
        self.assertEqual(
            replace_links_with_text(text),
            'https://example.com/some-image.gif (picture)'
        )

class HTMLUtilsTests(TestCase):
    """tests for :mod:`askbot.utils.html` module"""
    @with_settings(APP_URL='http://example.com')
    def test_absolutize_urls(self):
        text = """<img class="junk" src="/some.gif"> <img class="junk" src="/cat.gif"> <IMG SRC='/some.png'>"""
        #jinja register.filter decorator works in a weird way
        self.assertEqual(
            absolutize_urls(text),
            '<img class="junk" src="http://example.com/some.gif" style="max-width:500px;"> <img class="junk" src="http://example.com/cat.gif" style="max-width:500px;"> <IMG SRC="http://example.com/some.png" style="max-width:500px;">'
        )

        text = """<a class="junk" href="/something">link</a> <A HREF='/something'>link</A>"""
        #jinja register.filter decorator works in a weird way
        self.assertEqual(
            absolutize_urls(text),
            '<a class="junk" href="http://example.com/something">link</a> <A HREF="http://example.com/something">link</A>'
        )

        text = '<img src="/upfiles/13487900323638005.png" alt="" />'
        self.assertEqual(
            absolutize_urls(text),
            '<img src="http://example.com/upfiles/13487900323638005.png" style="max-width:500px;" alt="" />'
        )

        text = 'ohaouhaosthoanstoahuaou<br /><img src="/upfiles/13487906221942257.png" alt="" /><img class="gravatar" title="Evgeny4" src="http://kp-dev.askbot.com/avatar/render_primary/5/32/" alt="Evgeny4 gravatar image" width="32" height="32" />'
        self.assertEqual(
            absolutize_urls(text),
            'ohaouhaosthoanstoahuaou<br /><img src="http://example.com/upfiles/13487906221942257.png" style="max-width:500px;" alt="" /><img class="gravatar" title="Evgeny4" src="http://kp-dev.askbot.com/avatar/render_primary/5/32/" alt="Evgeny4 gravatar image" width="32" height="32" />'
        )

        text = '<a href="/upfiles/13487909784287052.png"><img src="/upfiles/13487909942351405.png" alt="" /></a><img src="http://i2.cdn.turner.com/cnn/dam/assets/120927033530-ryder-cup-captains-wall-4-tease.jpg" alt="" width="160" height="90" border="0" />and some text<br />aouaosutoaehut'
        self.assertEqual(
            absolutize_urls(text),
            '<a href="http://example.com/upfiles/13487909784287052.png"><img src="http://example.com/upfiles/13487909942351405.png" style="max-width:500px;" alt="" /></a><img src="http://i2.cdn.turner.com/cnn/dam/assets/120927033530-ryder-cup-captains-wall-4-tease.jpg" alt="" width="160" height="90" border="0" />and some text<br />aouaosutoaehut'
        )