diff --git a/django/contrib/auth/tests/views.py b/django/contrib/auth/tests/views.py
index b8a16a8c17..ea550f955d 100644
--- a/django/contrib/auth/tests/views.py
+++ b/django/contrib/auth/tests/views.py
@@ -114,8 +114,7 @@ class PasswordResetTest(AuthViewsTestCase):
         url, path = self._test_confirm_start()
         response = self.client.get(path)
         # redirect to a 'complete' page:
-        self.assertEqual(response.status_code, 200)
-        self.assertTrue("Please enter your new password" in response.content)
+        self.assertContains(response, "Please enter your new password")
 
     def test_confirm_invalid(self):
         url, path = self._test_confirm_start()
@@ -124,20 +123,17 @@ class PasswordResetTest(AuthViewsTestCase):
         path = path[:-5] + ("0" * 4) + path[-1]
 
         response = self.client.get(path)
-        self.assertEqual(response.status_code, 200)
-        self.assertTrue("The password reset link was invalid" in response.content)
+        self.assertContains(response, "The password reset link was invalid")
 
     def test_confirm_invalid_user(self):
         # Ensure that we get a 200 response for a non-existant user, not a 404
         response = self.client.get('/reset/123456-1-1/')
-        self.assertEqual(response.status_code, 200)
-        self.assertTrue("The password reset link was invalid" in response.content)
+        self.assertContains(response, "The password reset link was invalid")
 
     def test_confirm_overflow_user(self):
         # Ensure that we get a 200 response for a base36 user id that overflows int
         response = self.client.get('/reset/zzzzzzzzzzzzz-1-1/')
-        self.assertEqual(response.status_code, 200)
-        self.assertTrue("The password reset link was invalid" in response.content)
+        self.assertContains(response, "The password reset link was invalid")
 
     def test_confirm_invalid_post(self):
         # Same as test_confirm_invalid, but trying
@@ -165,14 +161,12 @@ class PasswordResetTest(AuthViewsTestCase):
 
         # Check we can't use the link again
         response = self.client.get(path)
-        self.assertEqual(response.status_code, 200)
-        self.assertTrue("The password reset link was invalid" in response.content)
+        self.assertContains(response, "The password reset link was invalid")
 
     def test_confirm_different_passwords(self):
         url, path = self._test_confirm_start()
         response = self.client.post(path, {'new_password1': 'anewpassword',
                                            'new_password2': 'x'})
-        self.assertEqual(response.status_code, 200)
         self.assertContainsEscaped(response, SetPasswordForm.error_messages['password_mismatch'])
 
 
@@ -183,7 +177,6 @@ class ChangePasswordTest(AuthViewsTestCase):
             'username': 'testclient',
             'password': password,
         })
-        self.assertEqual(response.status_code, 200)
         self.assertContainsEscaped(response, AuthenticationForm.error_messages['invalid_login'])
 
     def logout(self):
@@ -196,7 +189,6 @@ class ChangePasswordTest(AuthViewsTestCase):
             'new_password1': 'password1',
             'new_password2': 'password1',
         })
-        self.assertEqual(response.status_code, 200)
         self.assertContainsEscaped(response, PasswordChangeForm.error_messages['password_incorrect'])
 
     def test_password_change_fails_with_mismatched_passwords(self):
@@ -206,7 +198,6 @@ class ChangePasswordTest(AuthViewsTestCase):
             'new_password1': 'password1',
             'new_password2': 'donuts',
         })
-        self.assertEqual(response.status_code, 200)
         self.assertContainsEscaped(response, SetPasswordForm.error_messages['password_mismatch'])
 
     def test_password_change_succeeds(self):
@@ -363,8 +354,7 @@ class LogoutTest(AuthViewsTestCase):
         "Logout without next_page option renders the default template"
         self.login()
         response = self.client.get('/logout/')
-        self.assertEqual(200, response.status_code)
-        self.assertTrue('Logged out' in response.content)
+        self.assertContains(response, 'Logged out')
         self.confirm_logged_out()
 
     def test_14377(self):
diff --git a/tests/modeltests/test_client/models.py b/tests/modeltests/test_client/models.py
index df872cd190..02666cef52 100644
--- a/tests/modeltests/test_client/models.py
+++ b/tests/modeltests/test_client/models.py
@@ -75,7 +75,7 @@ class ClientTest(TestCase):
         self.assertEqual(response.status_code, 200)
         self.assertEqual(response.context['data'], '37')
         self.assertEqual(response.templates[0].name, 'POST Template')
-        self.assertTrue('Data received' in response.content)
+        self.assertContains(response, 'Data received')
 
     def test_response_headers(self):
         "Check the value of HTTP headers returned in a response"
diff --git a/tests/regressiontests/admin_views/tests.py b/tests/regressiontests/admin_views/tests.py
index 7a0a3bf868..55a2639028 100644
--- a/tests/regressiontests/admin_views/tests.py
+++ b/tests/regressiontests/admin_views/tests.py
@@ -92,9 +92,8 @@ class AdminViewBasicTest(TestCase):
     def testAddWithGETArgs(self):
         response = self.client.get('/test_admin/%s/admin_views/section/add/' % self.urlbit, {'name': 'My Section'})
         self.assertEqual(response.status_code, 200)
-        self.assertTrue(
-            'value="My Section"' in response.content,
-            "Couldn't find an input with the right value in the response."
+        self.assertContains(response, 'value="My Section"',
+            msg_prefix="Couldn't find an input with the right value in the response"
         )
 
     def testBasicEditGet(self):
@@ -393,13 +392,11 @@ class AdminViewBasicTest(TestCase):
         """
         response = self.client.get('/test_admin/%s/admin_views/thing/' % self.urlbit)
         self.assertEqual(response.status_code, 200)
-        self.assertTrue(
-            '<div id="changelist-filter">' in response.content,
-            "Expected filter not found in changelist view."
+        self.assertContains(response, '<div id="changelist-filter">',
+            msg_prefix="Expected filter not found in changelist view"
         )
-        self.assertFalse(
-            '<a href="?color__id__exact=3">Blue</a>' in response.content,
-            "Changelist filter not correctly limited by limit_choices_to."
+        self.assertNotContains(response, '<a href="?color__id__exact=3">Blue</a>',
+            msg_prefix="Changelist filter not correctly limited by limit_choices_to"
         )
 
     def testRelationSpanningFilters(self):
@@ -459,16 +456,16 @@ class AdminViewBasicTest(TestCase):
         """Ensure is_null is handled correctly."""
         Article.objects.create(title="I Could Go Anywhere", content="Versatile", date=datetime.datetime.now())
         response = self.client.get('/test_admin/%s/admin_views/article/' % self.urlbit)
-        self.assertTrue('4 articles' in response.content, '"4 articles" missing from response')
+        self.assertContains(response, '4 articles')
         response = self.client.get('/test_admin/%s/admin_views/article/' % self.urlbit, {'section__isnull': 'false'})
-        self.assertTrue('3 articles' in response.content, '"3 articles" missing from response')
+        self.assertContains(response, '3 articles')
         response = self.client.get('/test_admin/%s/admin_views/article/' % self.urlbit, {'section__isnull': 'true'})
-        self.assertTrue('1 article' in response.content, '"1 article" missing from response')
+        self.assertContains(response, '1 article')
 
     def testLogoutAndPasswordChangeURLs(self):
         response = self.client.get('/test_admin/%s/admin_views/article/' % self.urlbit)
-        self.assertFalse('<a href="/test_admin/%s/logout/">' % self.urlbit not in response.content)
-        self.assertFalse('<a href="/test_admin/%s/password_change/">' % self.urlbit not in response.content)
+        self.assertContains(response, '<a href="/test_admin/%s/logout/">' % self.urlbit)
+        self.assertContains(response, '<a href="/test_admin/%s/password_change/">' % self.urlbit)
 
     def testNamedGroupFieldChoicesChangeList(self):
         """
@@ -491,10 +488,7 @@ class AdminViewBasicTest(TestCase):
         """
         response = self.client.get('/test_admin/%s/admin_views/fabric/' % self.urlbit)
         self.assertEqual(response.status_code, 200)
-        self.assertTrue(
-            '<div id="changelist-filter">' in response.content,
-            "Expected filter not found in changelist view."
-        )
+        self.assertContains(response, '<div id="changelist-filter">')
         self.assertTrue(
             '<a href="?surface__exact=x">Horizontal</a>' in response.content and
             '<a href="?surface__exact=y">Vertical</a>' in response.content,
@@ -507,7 +501,7 @@ class AdminViewBasicTest(TestCase):
         # against the 'admin2' custom admin (which doesn't have the
         # Post model).
         response = self.client.get("/test_admin/admin/admin_views/post/")
-        self.assertTrue('icon-unknown.gif' in response.content)
+        self.assertContains(response, 'icon-unknown.gif')
 
     def testI18NLanguageNonEnglishDefault(self):
         """
@@ -759,7 +753,7 @@ class CustomModelAdminTest(AdminViewBasicTest):
     def testCustomAdminSiteView(self):
         self.client.login(username='super', password='secret')
         response = self.client.get('/test_admin/%s/my_view/' % self.urlbit)
-        self.assertTrue(response.content == "Django is a magical pony!", response.content)
+        self.assertEqual(response.content, "Django is a magical pony!")
 
 def get_perm(Model, perm):
     """Return the permission object, for the Model"""
@@ -1657,9 +1651,9 @@ class AdminViewListEditable(TestCase):
         # CSRF field = 1
         # field to track 'select all' across paginated views = 1
         # 6 + 3 + 4 + 1 + 2 + 1 + 1 = 18 inputs
-        self.assertEqual(response.content.count("<input"), 18)
+        self.assertContains(response, "<input", count=18)
         # 1 select per object = 3 selects
-        self.assertEqual(response.content.count("<select"), 4)
+        self.assertContains(response, "<select", count=4)
 
     def test_post_messages(self):
         # Ticket 12707: Saving inline editable should not show admin
@@ -2187,7 +2181,8 @@ class AdminActionsTest(TestCase):
         }
         response = self.client.post('/test_admin/admin/admin_views/subscriber/', action_data)
         self.assertTemplateUsed(response, 'admin/delete_selected_confirmation.html')
-        self.assertTrue('value="9999"' in response.content and 'value="2"' in response.content) # Instead of 9,999
+        self.assertContains(response, 'value="9999"') # Instead of 9,999
+        self.assertContains(response, 'value="2"')
         settings.USE_THOUSAND_SEPARATOR = self.old_USE_THOUSAND_SEPARATOR
         settings.USE_L10N = self.old_USE_L10N
 
@@ -2266,27 +2261,23 @@ class AdminActionsTest(TestCase):
         "Tests a ModelAdmin without any action"
         response = self.client.get('/test_admin/admin/admin_views/oldsubscriber/')
         self.assertEqual(response.context["action_form"], None)
-        self.assertTrue(
-            '<input type="checkbox" class="action-select"' not in response.content,
-            "Found an unexpected action toggle checkboxbox in response"
-        )
-        self.assertTrue('action-checkbox-column' not in response.content,
-            "Found unexpected action-checkbox-column class in response")
+        self.assertNotContains(response, '<input type="checkbox" class="action-select"',
+            msg_prefix="Found an unexpected action toggle checkboxbox in response")
+        self.assertNotContains(response, '<input type="checkbox" class="action-select"')
 
     def test_model_without_action_still_has_jquery(self):
         "Tests that a ModelAdmin without any actions still gets jQuery included in page"
         response = self.client.get('/test_admin/admin/admin_views/oldsubscriber/')
         self.assertEqual(response.context["action_form"], None)
-        self.assertTrue('jquery.min.js' in response.content,
-            "jQuery missing from admin pages for model with no admin actions"
+        self.assertContains(response, 'jquery.min.js',
+            msg_prefix="jQuery missing from admin pages for model with no admin actions"
         )
 
     def test_action_column_class(self):
         "Tests that the checkbox column class is present in the response"
         response = self.client.get('/test_admin/admin/admin_views/subscriber/')
         self.assertNotEqual(response.context["action_form"], None)
-        self.assertTrue('action-checkbox-column' in response.content,
-            "Expected an action-checkbox-column in response")
+        self.assertContains(response, 'action-checkbox-column')
 
     def test_multiple_actions_form(self):
         """
@@ -3061,7 +3052,7 @@ class ReadonlyTest(TestCase):
         self.assertNotContains(response, 'name="posted"')
         # 3 fields + 2 submit buttons + 4 inline management form fields, + 2
         # hidden fields for inlines + 1 field for the inline + 2 empty form
-        self.assertEqual(response.content.count("<input"), 14)
+        self.assertContains(response, "<input", count=14)
         self.assertContains(response, formats.localize(datetime.date.today()))
         self.assertContains(response,
             "<label>Awesomeness level:</label>")
@@ -3376,8 +3367,8 @@ class ValidXHTMLTests(TestCase):
     )
     def testLangNamePresent(self):
         response = self.client.get('/test_admin/%s/admin_views/' % self.urlbit)
-        self.assertFalse(' lang=""' in response.content)
-        self.assertFalse(' xml:lang=""' in response.content)
+        self.assertNotContains(response, ' lang=""')
+        self.assertNotContains(response, ' xml:lang=""')
 
 
 class DateHierarchyTests(TestCase):
diff --git a/tests/regressiontests/admin_widgets/tests.py b/tests/regressiontests/admin_widgets/tests.py
index c1116ba35a..dd53256b05 100644
--- a/tests/regressiontests/admin_widgets/tests.py
+++ b/tests/regressiontests/admin_widgets/tests.py
@@ -131,8 +131,8 @@ class AdminFormfieldForDBFieldWithRequestTests(DjangoTestCase):
         """
         self.client.login(username="super", password="secret")
         response = self.client.get("/widget_admin/admin_widgets/cartire/add/")
-        self.assertTrue("BMW M3" not in response.content)
-        self.assertTrue("Volkswagon Passat" in response.content)
+        self.assertNotContains(response, "BMW M3")
+        self.assertContains(response, "Volkswagon Passat")
 
 
 class AdminForeignKeyWidgetChangeList(DjangoTestCase):
@@ -147,7 +147,7 @@ class AdminForeignKeyWidgetChangeList(DjangoTestCase):
 
     def test_changelist_foreignkey(self):
         response = self.client.get('%s/admin_widgets/car/' % self.admin_root)
-        self.assertTrue('%s/auth/user/add/' % self.admin_root in response.content)
+        self.assertContains(response, '%s/auth/user/add/' % self.admin_root)
 
 
 class AdminForeignKeyRawIdWidget(DjangoTestCase):
diff --git a/tests/regressiontests/comment_tests/tests/moderation_view_tests.py b/tests/regressiontests/comment_tests/tests/moderation_view_tests.py
index e9d2fb1578..45aa140745 100644
--- a/tests/regressiontests/comment_tests/tests/moderation_view_tests.py
+++ b/tests/regressiontests/comment_tests/tests/moderation_view_tests.py
@@ -184,14 +184,14 @@ class AdminActionsTests(CommentTestCase):
         comments = self.createSomeComments()
         self.client.login(username="normaluser", password="normaluser")
         response = self.client.get("/admin/comments/comment/")
-        self.assertEqual("approve_comments" in response.content, False)
+        self.assertNotContains(response, "approve_comments")
 
     def testActionsModerator(self):
         comments = self.createSomeComments()
         makeModerator("normaluser")
         self.client.login(username="normaluser", password="normaluser")
         response = self.client.get("/admin/comments/comment/")
-        self.assertEqual("approve_comments" in response.content, True)
+        self.assertContains(response, "approve_comments")
 
     def testActionsDisabledDelete(self):
         "Tests a CommentAdmin where 'delete_selected' has been disabled."
@@ -199,7 +199,4 @@ class AdminActionsTests(CommentTestCase):
         self.client.login(username="normaluser", password="normaluser")
         response = self.client.get('/admin2/comments/comment/')
         self.assertEqual(response.status_code, 200)
-        self.assertTrue(
-            '<option value="delete_selected">' not in response.content,
-            "Found an unexpected delete_selected in response"
-        )
+        self.assertNotContains(response, '<option value="delete_selected">')
diff --git a/tests/regressiontests/views/tests/debug.py b/tests/regressiontests/views/tests/debug.py
index 2be33c47e8..c8358d334f 100644
--- a/tests/regressiontests/views/tests/debug.py
+++ b/tests/regressiontests/views/tests/debug.py
@@ -40,8 +40,8 @@ class DebugViewTests(TestCase):
             'file_data.txt': SimpleUploadedFile('file_data.txt', 'haha'),
         }
         response = self.client.post('/raises/', data)
-        self.assertTrue('file_data.txt' in response.content)
-        self.assertFalse('haha' in response.content)
+        self.assertContains(response, 'file_data.txt', status_code=500)
+        self.assertNotContains(response, 'haha', status_code=500)
 
     def test_403(self):
         # Ensure no 403.html template exists to test the default case.