[damned-lies] Fixed object sortability on Python 3

[Claude Paroz <claudep src gnome org>]

commit 9d04bdc18e17108374f65edd628f38b17ad74c02
Author: Claude Paroz <claude 2xlibre net>
Date:   Wed Feb 22 14:44:28 2017 +0100

    Fixed object sortability on Python 3

 stats/models.py      |    8 ++++----
 stats/tests/tests.py |   20 ++++++++++++++++++++
 2 files changed, 24 insertions(+), 4 deletions(-)
---
diff --git a/stats/models.py b/stats/models.py
index c3f5ddb..1e092af 100644
--- a/stats/models.py
+++ b/stats/models.py
@@ -101,8 +101,8 @@ class Module(models.Model):
     def __str__(self):
         return self.name
 
-    def __cmp__(self, other):
-        return cmp(self.name, other.name)
+    def __lt__(self, other):
+        return self.name < other.name
 
     def get_absolute_url(self):
         return reverse('module', args=[self.name])
@@ -1867,8 +1867,8 @@ class Information(models.Model):
                 info_dict[info.statistics_id] = [info]
         return info_dict
 
-    def __cmp__(self, other):
-        return cmp(self.statistics.module_name, other.statistics.module_name)
+    def __lt__(self, other):
+        return self.statistics.module_name < other.statistics.module_name
 
     def get_icon(self):
         return "%simg/%s.png" % (settings.STATIC_URL, self.type.split("-")[0])
diff --git a/stats/tests/tests.py b/stats/tests/tests.py
index 08e121b..0139951 100644
--- a/stats/tests/tests.py
+++ b/stats/tests/tests.py
@@ -34,6 +34,7 @@ from django.test import TestCase
 
 from stats.models import (
     Module, Domain, Branch, Release, CategoryName, Statistics, FakeLangStatistics,
+    Information,
 )
 from stats import utils
 from languages.models import Language
@@ -115,6 +116,10 @@ class ModuleTestCase(TestCase):
     def test_module_methods(self):
         self.assertEqual(self.mod.get_description(), 'gnome-hello')
 
+    def test_module_comparable(self):
+        modules = [Module.objects.get(name='zenity'), Module.objects.get(name='gnome-hello')]
+        self.assertEqual(sorted(modules)[0].name, 'gnome-hello')
+
     def test_modules_list(self):
         response = self.client.get(reverse('modules'))
         self.assertContains(response, '<li><a href="/module/zenity/">zenity</a></li>')
@@ -507,6 +512,21 @@ class StatisticsTests(TestCase):
         self.assertEqual(len(state), 1)
         self.assertTrue(isinstance(state[0], StateTranslating))
 
+    def test_information_comparable(self):
+        infos = [
+            Information.objects.create(
+                statistics=Statistics.objects.filter(branch__module__name='zenity').first(),
+                type='info',
+                description="Some information",
+            ),
+            Information.objects.create(
+                statistics=Statistics.objects.filter(branch__module__name='gnome-hello').first(),
+                type='info',
+                description="Other information",
+            ),
+        ]
+        self.assertEqual(sorted(infos)[0].statistics.branch.module.name, 'gnome-hello')
+
 class FigureTests(TestCase):
     fixtures = ['sample_data.json']
     def test_figure_view(self):