Add simple tests for admin views.

Make sure the admin views load without error. (Not really trying to test content right now.)

This includes failing test cases for:
* brack3t/Djrill#8: admin.autodiscover() fails without django-adminplus or DjrillAdminSite
* brack3t/Djrill#14: Django 1.5 doesn't support adminmedia template tag

djrill/test_admin_urls.py

@@ -0,0 +1,16 @@
+try:
+    from django.conf.urls import include, patterns, url
+except ImportError:
+    # Django 1.3
+    from django.conf.urls.defaults import include, patterns, url
+
+from django.contrib import admin
+
+from djrill import DjrillAdminSite
+
+admin.site = DjrillAdminSite()
+admin.autodiscover()
+
+urlpatterns = patterns('',
+    url(r'^admin/', include(admin.site.urls)),
+)

djrill/tests.py

@@ -1,6 +1,9 @@
 from mock import patch
+import sys
 
 from django.conf import settings
+from django.contrib import admin
+from django.contrib.auth.models import User
 from django.core import mail
 from django.core.exceptions import ImproperlyConfigured
 from django.test import TestCase
@@ -13,8 +16,9 @@ class DjrillBackendMockAPITestCase(TestCase):
 
     class MockResponse:
         """requests.post return value mock sufficient for DjrillBackend"""
-        def __init__(self, status_code=200):
+        def __init__(self, status_code=200, content="{}"):
             self.status_code = status_code
+            self.content = content
 
     def setUp(self):
         self.patch = patch('requests.post')
@@ -146,6 +150,71 @@ class DjrillBackendTests(DjrillBackendMockAPITestCase):
         self.assertEqual(sent, 0)
 
 
+def reset_admin_site():
+    """Return the Django admin globals to their original state"""
+    admin.site = admin.AdminSite() # restore default
+    if 'djrill.admin' in sys.modules:
+        del sys.modules['djrill.admin'] # force autodiscover to re-import
+
+
+class DjrillAdminTests(DjrillBackendMockAPITestCase):
+    """Test the Djrill admin site"""
+
+    # These tests currently just verify that the admin site pages load
+    # without error -- they don't test any Mandrill-supplied content.
+    # (Future improvements could mock the Mandrill responses.)
+
+    # These urls set up the DjrillAdminSite as suggested in the readme
+    urls = 'djrill.test_admin_urls'
+
+    @classmethod
+    def setUpClass(cls):
+        # Other test cases may muck with the Django admin site globals,
+        # so return it to the default state before loading test_admin_urls
+        reset_admin_site()
+
+    def setUp(self):
+        super(DjrillAdminTests, self).setUp()
+        # Must be authenticated staff to access admin site...
+        admin = User.objects.create_user('admin', 'admin@example.com', 'secret')
+        admin.is_staff = True
+        admin.save()
+        self.client.login(username='admin', password='secret')
+
+    def test_admin_senders(self):
+        response = self.client.get('/admin/djrill/senders/')
+        self.assertEqual(response.status_code, 200)
+        self.assertContains(response, "Senders")
+
+    def test_admin_status(self):
+        response = self.client.get('/admin/djrill/status/')
+        self.assertEqual(response.status_code, 200)
+        self.assertContains(response, "Status")
+
+    def test_admin_tags(self):
+        response = self.client.get('/admin/djrill/tags/')
+        self.assertEqual(response.status_code, 200)
+        self.assertContains(response, "Tags")
+
+    def test_admin_urls(self):
+        response = self.client.get('/admin/djrill/urls/')
+        self.assertEqual(response.status_code, 200)
+        self.assertContains(response, "URLs")
+
+    def test_admin_index(self):
+        """Make sure Djrill section is included in the admin index page"""
+        response = self.client.get('/admin/')
+        self.assertEqual(response.status_code, 200)
+        self.assertContains(response, "Djrill")
+
+
+class DjrillNoAdminTests(TestCase):
+    def test_admin_autodiscover_without_djrill(self):
+        """Make sure autodiscover doesn't die without DjrillAdminSite"""
+        reset_admin_site()
+        admin.autodiscover() # test: this shouldn't error
+
+
 class DjrillMessageTests(TestCase):
     def setUp(self):
         self.subject = "Djrill baby djrill."