Fixed #15826 -- Made `assertContains` and `assertNotContains` work with `SimpleTemplateResponse` by forcing it to be rendered if it hasn't been rendered yet. Thanks to bmihelac for the report, to mmcnickle for the initial patch and tests, and to Carl Meyer for the guidance.

git-svn-id: http://code.djangoproject.com/svn/django/trunk@17025 bcc190cf-cafb-0310-a4f2-bffc1f526a37

django/test/testcases.py

@@ -500,6 +500,13 @@ class TransactionTestCase(SimpleTestCase):
         If ``count`` is None, the count doesn't matter - the assertion is true
         if the text occurs at least once in the response.
         """
+
+        # If the response supports deferred rendering and hasn't been rendered
+        # yet, then ensure that it does get rendered before proceeding further.
+        if (hasattr(response, 'render') and callable(response.render)
+            and not response.is_rendered):
+            response.render()
+
         if msg_prefix:
             msg_prefix += ": "
 
@@ -523,6 +530,13 @@ class TransactionTestCase(SimpleTestCase):
         successfully, (i.e., the HTTP status code was as expected), and that
         ``text`` doesn't occurs in the content of the response.
         """
+
+        # If the response supports deferred rendering and hasn't been rendered
+        # yet, then ensure that it does get rendered before proceeding further.
+        if (hasattr(response, 'render') and callable(response.render)
+            and not response.is_rendered):
+            response.render()
+
         if msg_prefix:
             msg_prefix += ": "
 

tests/regressiontests/test_client_regress/models.py

@@ -14,6 +14,8 @@ import django.template.context
 from django.test import Client, TestCase
 from django.test.client import encode_file, RequestFactory
 from django.test.utils import ContextList, override_settings
+from django.template.response import SimpleTemplateResponse
+from django.http import HttpResponse
 
 
 class AssertContainsTests(TestCase):
@@ -130,6 +132,37 @@ class AssertContainsTests(TestCase):
         self.assertNotContains(r, u'はたけ')
         self.assertNotContains(r, '\xe3\x81\xaf\xe3\x81\x9f\xe3\x81\x91'.decode('utf-8'))
 
+    def test_assert_contains_renders_template_response(self):
+        """ Test that we can pass in an unrendered SimpleTemplateReponse
+            without throwing an error.
+            Refs #15826.
+        """
+        response = SimpleTemplateResponse(Template('Hello'), status=200)
+        self.assertContains(response, 'Hello')
+
+    def test_assert_contains_using_non_template_response(self):
+        """ Test that auto-rendering does not affect responses that aren't
+            instances (or subclasses) of SimpleTemplateResponse.
+            Refs #15826.
+        """
+        response = HttpResponse('Hello')
+        self.assertContains(response, 'Hello')
+
+    def test_assert_not_contains_renders_template_response(self):
+        """ Test that we can pass in an unrendered SimpleTemplateReponse
+            without throwing an error.
+            Refs #15826.
+        """
+        response = SimpleTemplateResponse(Template('Hello'), status=200)
+        self.assertNotContains(response, 'Bye')
+
+    def test_assert_not_contains_using_non_template_response(self):
+        """ Test that auto-rendering does not affect responses that aren't
+            instances (or subclasses) of SimpleTemplateResponse.
+            Refs #15826.
+        """
+        response = HttpResponse('Hello')
+        self.assertNotContains(response, 'Bye')
 
 class AssertTemplateUsedTests(TestCase):
     fixtures = ['testdata.json']