[1.2.X] Migrated urlpatterns_reverse doctests. Thanks to Stephan Jaekel.

Backport of r13893 from trunk.

git-svn-id: http://code.djangoproject.com/svn/django/branches/releases/1.2.X@13914 bcc190cf-cafb-0310-a4f2-bffc1f526a37

tests/regressiontests/urlpatterns_reverse/tests.py

@@ -1,19 +1,6 @@
 """
 Unit tests for reverse URL lookups.
 """
-__test__ = {'API_TESTS': """
-
-RegexURLResolver should raise an exception when no urlpatterns exist.
-
->>> from django.core.urlresolvers import RegexURLResolver
->>> no_urls = 'regressiontests.urlpatterns_reverse.no_urls'
->>> resolver = RegexURLResolver(r'^$', no_urls)
->>> resolver.url_patterns
-Traceback (most recent call last):
-...
-ImproperlyConfigured: The included urlconf regressiontests.urlpatterns_reverse.no_urls doesn't have any patterns in it
-"""}
-
 import unittest
 
 from django.conf import settings
@@ -107,6 +94,27 @@ test_data = (
 
 )
 
+class NoURLPatternsTests(TestCase):
+    urls = 'regressiontests.urlpatterns_reverse.no_urls'
+
+    def assertRaisesErrorWithMessage(self, error, message, callable,
+        *args, **kwargs):
+        self.assertRaises(error, callable, *args, **kwargs)
+        try:
+            callable(*args, **kwargs)
+        except error, e:
+            self.assertEqual(message, str(e))
+
+    def test_no_urls_exception(self):
+        """
+        RegexURLResolver should raise an exception when no urlpatterns exist.
+        """
+        resolver = RegexURLResolver(r'^$', self.urls)
+
+        self.assertRaisesErrorWithMessage(ImproperlyConfigured,
+            "The included urlconf regressiontests.urlpatterns_reverse.no_urls "\
+            "doesn't have any patterns in it", getattr, resolver, 'url_patterns')
+
 class URLPatternReverse(TestCase):
     urls = 'regressiontests.urlpatterns_reverse.urls'