diff --git a/rhodecode/tests/test_libs.py b/rhodecode/tests/test_libs.py
--- a/rhodecode/tests/test_libs.py
+++ b/rhodecode/tests/test_libs.py
@@ -23,9 +23,10 @@
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
-
-
 import unittest
+import datetime
+import hashlib
+import mock
 from rhodecode.tests import *
 
 proto = 'http'
@@ -116,3 +117,61 @@ class TestLibs(unittest.TestCase):
         'marian.user', 'marco-polo', 'marco_polo'
         ], key=lambda k: k.lower())
         self.assertEqual(s, extract_mentioned_users(sample))
+
+    def test_age(self):
+        import calendar
+        from rhodecode.lib.utils2 import age
+        n = datetime.datetime.now()
+        delt = lambda *args, **kwargs: datetime.timedelta(*args, **kwargs)
+        self.assertEqual(age(n), u'just now')
+        self.assertEqual(age(n - delt(seconds=1)), u'1 second ago')
+        self.assertEqual(age(n - delt(seconds=60 * 2)), u'2 minutes ago')
+        self.assertEqual(age(n - delt(hours=1)), u'1 hour ago')
+        self.assertEqual(age(n - delt(hours=24)), u'1 day ago')
+        self.assertEqual(age(n - delt(hours=24 * 5)), u'5 days ago')
+        self.assertEqual(age(n - delt(hours=24 * (calendar.mdays[n.month-1] + 2))),
+                         u'1 month and 2 days ago')
+        self.assertEqual(age(n - delt(hours=24 * 400)), u'1 year and 1 month ago')
+
+    def test_tag_exctrator(self):
+        sample = (
+            "hello pta[tag] gog [[]] [[] sda ero[or]d [me =>>< sa]"
+            "[requires] [stale] [see<>=>] [see => http://url.com]"
+            "[requires => url] [lang => python] [just a tag]"
+            "[,d] [ => ULR ] [obsolete] [desc]]"
+        )
+        from rhodecode.lib.helpers import desc_stylize
+        res = desc_stylize(sample)
+        self.assertTrue('<div class="metatag" tag="tag">tag</div>' in res)
+        self.assertTrue('<div class="metatag" tag="obsolete">obsolete</div>' in res)
+        self.assertTrue('<div class="metatag" tag="stale">stale</div>' in res)
+        self.assertTrue('<div class="metatag" tag="lang">python</div>' in res)
+        self.assertTrue('<div class="metatag" tag="requires">requires =&gt; <a href="/url">url</a></div>' in res)
+        self.assertTrue('<div class="metatag" tag="tag">tag</div>' in res)
+
+    def test_alternative_gravatar(self):
+        from rhodecode.lib.helpers import gravatar_url
+        _md5 = lambda s: hashlib.md5(s).hexdigest()
+
+        def fake_conf(**kwargs):
+            from pylons import config
+            config['app_conf'] = {}
+            config['app_conf']['use_gravatar'] = True
+            config['app_conf'].update(kwargs)
+            return config
+        fake = fake_conf(alternative_gravatar_url='http://test.com/{email}')
+        with mock.patch('pylons.config', fake):
+            grav = gravatar_url(email_address='test@foo.com', size=24)
+            assert grav == 'http://test.com/test@foo.com'
+
+        fake = fake_conf(alternative_gravatar_url='http://test.com/{md5email}')
+        with mock.patch('pylons.config', fake):
+            em = 'test@foo.com'
+            grav = gravatar_url(email_address=em, size=24)
+            assert grav == 'http://test.com/%s' % (_md5(em))
+
+        fake = fake_conf(alternative_gravatar_url='http://test.com/{md5email}/{size}')
+        with mock.patch('pylons.config', fake):
+            em = 'test@foo.com'
+            grav = gravatar_url(email_address=em, size=24)
+            assert grav == 'http://test.com/%s/%s' % (_md5(em), 24)