Merge branch 'master' of github.com:tomchristie/django-rest-framework

docs/api-guide/authentication.md

@@ -363,7 +363,7 @@ HTTP Signature (currently a [IETF draft][http-signature-ietf-draft]) provides a
 [oauth]: http://oauth.net/2/
 [permission]: permissions.md
 [throttling]: throttling.md
-[csrf-ajax]: https://docs.djangoproject.com/en/dev/ref/csrf/#ajax
+[csrf-ajax]: https://docs.djangoproject.com/en/stable/ref/csrf/#ajax
 [mod_wsgi_official]: http://code.google.com/p/modwsgi/wiki/ConfigurationDirectives#WSGIPassAuthorization
 [django-oauth-toolkit-getting-started]: https://django-oauth-toolkit.readthedocs.io/en/latest/rest-framework/getting_started.html
 [django-rest-framework-oauth]: http://jpadilla.github.io/django-rest-framework-oauth/

docs/api-guide/fields.md

@@ -261,7 +261,7 @@ Corresponds to `django.db.models.fields.DecimalField`.
 
 **Signature**: `DecimalField(max_digits, decimal_places, coerce_to_string=None, max_value=None, min_value=None)`
 
-- `max_digits` The maximum number of digits allowed in the number. Note that this number must be greater than or equal to decimal_places.
+- `max_digits` The maximum number of digits allowed in the number. It must be either `None` or an integer greater than or equal to `decimal_places`.
 - `decimal_places` The number of decimal places to store with the number.
 - `coerce_to_string` Set to `True` if string values should be returned for the representation, or `False` if `Decimal` objects should be returned. Defaults to the same value as the `COERCE_DECIMAL_TO_STRING` settings key, which will be `True` unless overridden. If `Decimal` objects are returned by the serializer, then the final output format will be determined by the renderer. Note that setting `localize` will force the value to `True`.
 - `max_value` Validate that the number provided is no greater than this value.
@@ -665,12 +665,12 @@ The [django-rest-framework-gis][django-rest-framework-gis] package provides geog
 
 The [django-rest-framework-hstore][django-rest-framework-hstore] package provides an `HStoreField` to support [django-hstore][django-hstore] `DictionaryField` model field.
 
-[cite]: https://docs.djangoproject.com/en/dev/ref/forms/api/#django.forms.Form.cleaned_data
+[cite]: https://docs.djangoproject.com/en/stable/ref/forms/api/#django.forms.Form.cleaned_data
 [html-and-forms]: ../topics/html-and-forms.md
-[FILE_UPLOAD_HANDLERS]: https://docs.djangoproject.com/en/dev/ref/settings/#std:setting-FILE_UPLOAD_HANDLERS
+[FILE_UPLOAD_HANDLERS]: https://docs.djangoproject.com/en/stable/ref/settings/#std:setting-FILE_UPLOAD_HANDLERS
 [ecma262]: http://ecma-international.org/ecma-262/5.1/#sec-15.9.1.15
-[strftime]: http://docs.python.org/2/library/datetime.html#strftime-and-strptime-behavior
-[django-widgets]: https://docs.djangoproject.com/en/dev/ref/forms/widgets/
+[strftime]: https://docs.python.org/3/library/datetime.html#strftime-and-strptime-behavior
+[django-widgets]: https://docs.djangoproject.com/en/stable/ref/forms/widgets/
 [iso8601]: http://www.w3.org/TR/NOTE-datetime
 [drf-compound-fields]: https://drf-compound-fields.readthedocs.io
 [drf-extra-fields]: https://github.com/Hipo/drf-extra-fields

docs/api-guide/filtering.md

@@ -455,14 +455,14 @@ The [djangorestframework-word-filter][django-rest-framework-word-search-filter]
 
 [drf-url-filter][drf-url-filter] is a simple Django app to apply filters on drf `ModelViewSet`'s `Queryset` in a clean, simple and configurable way. It also supports validations on incoming query params and their values. A beautiful python package `Voluptuous` is being used for validations on the incoming query parameters. The best part about voluptuous is you can define your own validations as per your query params requirements.
 
-[cite]: https://docs.djangoproject.com/en/dev/topics/db/queries/#retrieving-specific-objects-with-filters
+[cite]: https://docs.djangoproject.com/en/stable/topics/db/queries/#retrieving-specific-objects-with-filters
 [django-filter]: https://github.com/alex/django-filter
 [django-filter-docs]: https://django-filter.readthedocs.io/en/latest/index.html
 [guardian]: https://django-guardian.readthedocs.io/
 [view-permissions]: https://django-guardian.readthedocs.io/en/latest/userguide/assign.html
 [view-permissions-blogpost]: http://blog.nyaruka.com/adding-a-view-permission-to-django-models
 [nullbooleanselect]: https://github.com/django/django/blob/master/django/forms/widgets.py
-[search-django-admin]: https://docs.djangoproject.com/en/dev/ref/contrib/admin/#django.contrib.admin.ModelAdmin.search_fields
+[search-django-admin]: https://docs.djangoproject.com/en/stable/ref/contrib/admin/#django.contrib.admin.ModelAdmin.search_fields
 [django-rest-framework-filters]: https://github.com/philipn/django-rest-framework-filters
 [django-rest-framework-word-search-filter]: https://github.com/trollknurr/django-rest-framework-word-search-filter
 [django-url-filter]: https://github.com/miki725/django-url-filter

docs/api-guide/generic-views.md

@@ -382,7 +382,7 @@ The [django-rest-framework-bulk package][django-rest-framework-bulk] implements
 [Django Rest Multiple Models][django-rest-multiple-models] provides a generic view (and mixin) for sending multiple serialized models and/or querysets via a single API request.
 
 
-[cite]: https://docs.djangoproject.com/en/dev/ref/class-based-views/#base-vs-generic-views
+[cite]: https://docs.djangoproject.com/en/stable/ref/class-based-views/#base-vs-generic-views
 [GenericAPIView]: #genericapiview
 [ListModelMixin]: #listmodelmixin
 [CreateModelMixin]: #createmodelmixin

docs/api-guide/pagination.md

@@ -325,7 +325,7 @@ The [`DRF-extensions` package][drf-extensions] includes a [`PaginateByMaxMixin`
 
 The [`drf-proxy-pagination` package][drf-proxy-pagination] includes a `ProxyPagination` class which allows to choose pagination class with a query parameter.
 
-[cite]: https://docs.djangoproject.com/en/dev/topics/pagination/
+[cite]: https://docs.djangoproject.com/en/stable/topics/pagination/
 [github-link-pagination]: https://developer.github.com/guides/traversing-with-pagination/
 [link-header]: ../img/link-header-pagination.png
 [drf-extensions]: http://chibisov.github.io/drf-extensions/docs/

docs/api-guide/parsers.md

@@ -224,7 +224,7 @@ Modify your REST framework settings.
 
 [jquery-ajax]: http://api.jquery.com/jQuery.ajax/
 [cite]: https://groups.google.com/d/topic/django-developers/dxI4qVzrBY4/discussion
-[upload-handlers]: https://docs.djangoproject.com/en/dev/topics/http/file-uploads/#upload-handlers
+[upload-handlers]: https://docs.djangoproject.com/en/stable/topics/http/file-uploads/#upload-handlers
 [rest-framework-yaml]: http://jpadilla.github.io/django-rest-framework-yaml/
 [rest-framework-xml]: http://jpadilla.github.io/django-rest-framework-xml/
 [yaml]: http://www.yaml.org/

docs/api-guide/permissions.md

@@ -164,7 +164,7 @@ As with `DjangoModelPermissions`, this permission must only be applied to views
 
 Note that `DjangoObjectPermissions` **does not** require the `django-guardian` package, and should support other object-level backends equally well.
 
-As with `DjangoModelPermissions` you can use custom model permissions by overriding `DjangoModelPermissions` and setting the `.perms_map` property.  Refer to the source code for details.
+As with `DjangoModelPermissions` you can use custom model permissions by overriding `DjangoObjectPermissions` and setting the `.perms_map` property.  Refer to the source code for details.
 
 ---
 
@@ -269,8 +269,8 @@ The [Django Rest Framework Roles][django-rest-framework-roles] package makes it
 [authentication]: authentication.md
 [throttling]: throttling.md
 [filtering]: filtering.md
-[contribauth]: https://docs.djangoproject.com/en/dev/topics/auth/customizing/#custom-permissions
-[objectpermissions]: https://docs.djangoproject.com/en/dev/topics/auth/customizing/#handling-object-permissions
+[contribauth]: https://docs.djangoproject.com/en/stable/topics/auth/customizing/#custom-permissions
+[objectpermissions]: https://docs.djangoproject.com/en/stable/topics/auth/customizing/#handling-object-permissions
 [guardian]: https://github.com/lukaszb/django-guardian
 [get_objects_for_user]: http://pythonhosted.org/django-guardian/api/guardian.shortcuts.html#get-objects-for-user
 [2.2-announcement]: ../topics/2.2-announcement.md

docs/api-guide/relations.md

@@ -505,7 +505,7 @@ For example, given the following model for a tag, which has a generic relationsh
         """
         Tags arbitrary model instances using a generic relation.
 
-        See: https://docs.djangoproject.com/en/dev/ref/contrib/contenttypes/
+        See: https://docs.djangoproject.com/en/stable/ref/contrib/contenttypes/
         """
         tag_name = models.SlugField()
         content_type = models.ForeignKey(ContentType, on_delete=models.CASCADE)
@@ -593,9 +593,9 @@ The [drf-nested-routers package][drf-nested-routers] provides routers and relati
 The [rest-framework-generic-relations][drf-nested-relations] library provides read/write serialization for generic foreign keys.
 
 [cite]: http://lwn.net/Articles/193245/
-[reverse-relationships]: https://docs.djangoproject.com/en/dev/topics/db/queries/#following-relationships-backward
+[reverse-relationships]: https://docs.djangoproject.com/en/stable/topics/db/queries/#following-relationships-backward
 [routers]: http://www.django-rest-framework.org/api-guide/routers#defaultrouter
-[generic-relations]: https://docs.djangoproject.com/en/dev/ref/contrib/contenttypes/#id1
+[generic-relations]: https://docs.djangoproject.com/en/stable/ref/contrib/contenttypes/#id1
 [2.2-announcement]: ../topics/2.2-announcement.md
 [drf-nested-routers]: https://github.com/alanjds/drf-nested-routers
 [drf-nested-relations]: https://github.com/Ian-Foote/rest-framework-generic-relations

docs/api-guide/renderers.md

@@ -123,6 +123,8 @@ You can use `TemplateHTMLRenderer` either to return regular HTML pages using RES
 
 If you're building websites that use `TemplateHTMLRenderer` along with other renderer classes, you should consider listing `TemplateHTMLRenderer` as the first class in the `renderer_classes` list, so that it will be prioritised first even for browsers that send poorly formed `ACCEPT:` headers.
 
+See the [_HTML & Forms_ Topic Page][html-and-forms] for further examples of `TemplateHTMLRenderer` usage.
+
 **.media_type**: `text/html`
 
 **.format**: `'.html'`
@@ -476,7 +478,7 @@ Comma-separated values are a plain-text tabular data format, that can be easily
 [Rest Framework Latex] provides a renderer that outputs PDFs using Laulatex. It is maintained by [Pebble (S/F Software)][mypebble].
 
 
-[cite]: https://docs.djangoproject.com/en/dev/ref/template-response/#the-rendering-process
+[cite]: https://docs.djangoproject.com/en/stable/stable/template-response/#the-rendering-process
 [conneg]: content-negotiation.md
 [html-and-forms]: ../topics/html-and-forms.md
 [browser-accept-headers]: http://www.gethifi.com/blog/browser-rest-http-accept-headers
@@ -485,7 +487,7 @@ Comma-separated values are a plain-text tabular data format, that can be easily
 [quote]: http://roy.gbiv.com/untangled/2008/rest-apis-must-be-hypertext-driven
 [application/vnd.github+json]: http://developer.github.com/v3/media/
 [application/vnd.collection+json]: http://www.amundsen.com/media-types/collection/
-[django-error-views]: https://docs.djangoproject.com/en/dev/topics/http/views/#customizing-error-views
+[django-error-views]: https://docs.djangoproject.com/en/stable/topics/http/views/#customizing-error-views
 [rest-framework-jsonp]: http://jpadilla.github.io/django-rest-framework-jsonp/
 [cors]: http://www.w3.org/TR/cors/
 [cors-docs]: http://www.django-rest-framework.org/topics/ajax-csrf-cors/

docs/api-guide/responses.md

@@ -91,5 +91,5 @@ As with any other `TemplateResponse`, this method is called to render the serial
 
 You won't typically need to call `.render()` yourself, as it's handled by Django's standard response cycle.
 
-[cite]: https://docs.djangoproject.com/en/dev/ref/template-response/
+[cite]: https://docs.djangoproject.com/en/stable/stable/template-response/
 [statuscodes]: status-codes.md

docs/api-guide/reverse.md

@@ -51,5 +51,5 @@ As with the `reverse` function, you should **include the request as a keyword ar
     api_root = reverse_lazy('api-root', request=request)
 
 [cite]: http://www.ics.uci.edu/~fielding/pubs/dissertation/rest_arch_style.htm#sec_5_1_5
-[reverse]: https://docs.djangoproject.com/en/dev/topics/http/urls/#reverse
-[reverse-lazy]: https://docs.djangoproject.com/en/dev/topics/http/urls/#reverse-lazy
+[reverse]: https://docs.djangoproject.com/en/stable/topics/http/urls/#reverse
+[reverse-lazy]: https://docs.djangoproject.com/en/stable/topics/http/urls/#reverse-lazy

docs/api-guide/schemas.md

@@ -541,5 +541,5 @@ A short description of the meaning and intended usage of the input field.
 [open-api]: https://openapis.org/
 [json-hyperschema]: http://json-schema.org/latest/json-schema-hypermedia.html
 [api-blueprint]: https://apiblueprint.org/
-[static-files]: https://docs.djangoproject.com/en/dev/howto/static-files/
-[named-arguments]: https://docs.djangoproject.com/en/dev/topics/http/urls/#named-groups
+[static-files]: https://docs.djangoproject.com/en/stable/howto/static-files/
+[named-arguments]: https://docs.djangoproject.com/en/stable/topics/http/urls/#named-groups

docs/api-guide/serializers.md

@@ -1118,7 +1118,7 @@ The [html-json-forms][html-json-forms] package provides an algorithm and seriali
 
 [cite]: https://groups.google.com/d/topic/django-users/sVFaOfQi4wY/discussion
 [relations]: relations.md
-[model-managers]: https://docs.djangoproject.com/en/dev/topics/db/managers/
+[model-managers]: https://docs.djangoproject.com/en/stable/topics/db/managers/
 [encapsulation-blogpost]: http://www.dabapps.com/blog/django-models-and-encapsulation/
 [django-rest-marshmallow]: http://tomchristie.github.io/django-rest-marshmallow/
 [marshmallow]: https://marshmallow.readthedocs.io/en/latest/

docs/api-guide/settings.md

@@ -456,7 +456,7 @@ An integer of 0 or more, that may be used to specify the number of application p
 
 Default: `None`
 
-[cite]: http://www.python.org/dev/peps/pep-0020/
+[cite]: https://www.python.org/dev/peps/pep-0020/
 [rfc4627]: http://www.ietf.org/rfc/rfc4627.txt
 [heroku-minified-json]: https://github.com/interagent/http-api-design#keep-json-minified-in-all-responses
-[strftime]: http://docs.python.org/2/library/time.html#time.strftime
+[strftime]: https://docs.python.org/3/library/time.html#time.strftime

docs/api-guide/testing.md

@@ -373,6 +373,6 @@ For example, to add support for using `format='html'` in test requests, you migh
     }
 
 [cite]: http://jacobian.org/writing/django-apps-with-buildout/#s-create-a-test-wrapper
-[client]: https://docs.djangoproject.com/en/dev/topics/testing/tools/#the-test-client
-[requestfactory]: https://docs.djangoproject.com/en/dev/topics/testing/advanced/#django.test.client.RequestFactory
+[client]: https://docs.djangoproject.com/en/stable/topics/testing/tools/#the-test-client
+[requestfactory]: https://docs.djangoproject.com/en/stable/topics/testing/advanced/#django.test.client.RequestFactory
 [configuration]: #configuration

docs/api-guide/throttling.md

@@ -193,5 +193,5 @@ The following is an example of a rate throttle, that will randomly throttle 1 in
 [cite]: https://dev.twitter.com/docs/error-codes-responses
 [permissions]: permissions.md
 [identifing-clients]: http://oxpedia.org/wiki/index.php?title=AppSuite:Grizzly#Multiple_Proxies_in_front_of_the_cluster
-[cache-setting]: https://docs.djangoproject.com/en/dev/ref/settings/#caches
-[cache-docs]: https://docs.djangoproject.com/en/dev/topics/cache/#setting-up-the-cache
+[cache-setting]: https://docs.djangoproject.com/en/stable/ref/settings/#caches
+[cache-docs]: https://docs.djangoproject.com/en/stable/topics/cache/#setting-up-the-cache

docs/api-guide/validators.md

@@ -300,4 +300,4 @@ In some advanced cases you might want a validator to be passed the serializer fi
         # In `__call__` we can then use that information to modify the validation behavior.
         self.is_update = serializer_field.parent.instance is not None
 
-[cite]: https://docs.djangoproject.com/en/dev/ref/validators/
+[cite]: https://docs.djangoproject.com/en/stable/ref/validators/

docs/topics/2.2-announcement.md

@@ -147,10 +147,10 @@ When using a serializer with a `HyperlinkedRelatedField` or `HyperlinkedIdentity
 From version 2.2 onwards, serializers with hyperlinked relationships *always* require a `'request'` key to be supplied in the context dictionary.  The implicit behavior will continue to function, but its use will raise a `PendingDeprecationWarning`.
 
 [xordoquy]: https://github.com/xordoquy
-[django-python-3]: https://docs.djangoproject.com/en/dev/faq/install/#can-i-use-django-with-python-3
-[porting-python-3]: https://docs.djangoproject.com/en/dev/topics/python3/
-[python-compat]: https://docs.djangoproject.com/en/dev/releases/1.5/#python-compatibility
-[django-deprecation-policy]: https://docs.djangoproject.com/en/dev/internals/release-process/#internal-release-deprecation-policy
+[django-python-3]: https://docs.djangoproject.com/en/stable/faq/install/#can-i-use-django-with-python-3
+[porting-python-3]: https://docs.djangoproject.com/en/stable/topics/python3/
+[python-compat]: https://docs.djangoproject.com/en/stable/releases/1.5/#python-compatibility
+[django-deprecation-policy]: https://docs.djangoproject.com/en/stable/internals/release-process/#internal-release-deprecation-policy
 [credits]: http://www.django-rest-framework.org/topics/credits
 [mailing-list]: https://groups.google.com/forum/?fromgroups#!forum/django-rest-framework
 [django-rest-framework-docs]: https://github.com/marcgibbons/django-rest-framework-docs

docs/topics/2.4-announcement.md

@@ -162,7 +162,7 @@ The next planned release will be 3.0, featuring an improved and simplified seria
 
 Once again, many thanks to all the generous [backers and sponsors][kickstarter-sponsors] who've helped make this possible!
 
-[lts-releases]: https://docs.djangoproject.com/en/dev/internals/release-process/#long-term-support-lts-releases
+[lts-releases]: https://docs.djangoproject.com/en/stable/internals/release-process/#long-term-support-lts-releases
 [2-4-release-notes]: release-notes#240
 [view-name-and-description-settings]: ../api-guide/settings#view-names-and-descriptions
 [client-ip-identification]: ../api-guide/throttling#how-clients-are-identified

docs/topics/3.0-announcement.md

@@ -870,7 +870,7 @@ The `COMPACT_JSON` setting has been added, and can be used to revert this behavi
 
 #### File fields as URLs
 
-The `FileField` and `ImageField` classes are now represented as URLs by default. You should ensure you set Django's [standard `MEDIA_URL` setting](https://docs.djangoproject.com/en/dev/ref/settings/#std:setting-MEDIA_URL) appropriately, and ensure your application [serves the uploaded files](https://docs.djangoproject.com/en/dev/howto/static-files/#serving-uploaded-files-in-development).
+The `FileField` and `ImageField` classes are now represented as URLs by default. You should ensure you set Django's [standard `MEDIA_URL` setting](https://docs.djangoproject.com/en/stable/ref/settings/#std:setting-MEDIA_URL) appropriately, and ensure your application [serves the uploaded files](https://docs.djangoproject.com/en/stable/howto/static-files/#serving-uploaded-files-in-development).
 
 You can revert this behavior, and display filenames in the representation by using the `UPLOADED_FILES_USE_URL` settings key:
 
@@ -962,4 +962,4 @@ You can follow development on the GitHub site, where we use [milestones to indic
 [kickstarter]: http://kickstarter.com/projects/tomchristie/django-rest-framework-3
 [sponsors]: http://www.django-rest-framework.org/topics/kickstarter-announcement/#sponsors
 [mixins.py]: https://github.com/tomchristie/django-rest-framework/blob/master/rest_framework/mixins.py
-[django-localization]: https://docs.djangoproject.com/en/dev/topics/i18n/translation/#localization-how-to-create-language-files
+[django-localization]: https://docs.djangoproject.com/en/stable/topics/i18n/translation/#localization-how-to-create-language-files

docs/topics/ajax-csrf-cors.md

@@ -35,7 +35,7 @@ The best way to deal with CORS in REST framework is to add the required response
 
 [cite]: http://www.codinghorror.com/blog/2008/10/preventing-csrf-and-xsrf-attacks.html
 [csrf]: https://www.owasp.org/index.php/Cross-Site_Request_Forgery_(CSRF)
-[csrf-ajax]: https://docs.djangoproject.com/en/dev/ref/csrf/#ajax
+[csrf-ajax]: https://docs.djangoproject.com/en/stable/ref/csrf/#ajax
 [cors]: http://www.w3.org/TR/cors/
 [ottoyiu]: https://github.com/ottoyiu/
 [django-cors-headers]: https://github.com/ottoyiu/django-cors-headers/

docs/topics/release-notes.md

@@ -598,7 +598,7 @@ For older release notes, [please see the version 2.x documentation][old-release-
 
 [cite]: http://www.catb.org/~esr/writings/cathedral-bazaar/cathedral-bazaar/ar01s04.html
 [deprecation-policy]: #deprecation-policy
-[django-deprecation-policy]: https://docs.djangoproject.com/en/dev/internals/release-process/#internal-release-deprecation-policy
+[django-deprecation-policy]: https://docs.djangoproject.com/en/stable/internals/release-process/#internal-release-deprecation-policy
 [defusedxml-announce]: http://blog.python.org/2013/02/announcing-defusedxml-fixes-for-xml.html
 [743]: https://github.com/tomchristie/django-rest-framework/pull/743
 [staticfiles14]: https://docs.djangoproject.com/en/1.4/howto/static-files/#with-a-template-tag

docs/tutorial/quickstart.md

@@ -118,7 +118,9 @@ We'd also like to set a few global settings.  We'd like to turn on pagination, a
     )
 
     REST_FRAMEWORK = {
-        'DEFAULT_PERMISSION_CLASSES': ('rest_framework.permissions.IsAdminUser',),
+        'DEFAULT_PERMISSION_CLASSES': [
+            'rest_framework.permissions.IsAdminUser',
+        ],
         'PAGE_SIZE': 10
     }
 

tests/browsable_api/test_browsable_api.py

@@ -26,16 +26,19 @@ class DropdownWithAuthTests(TestCase):
     def test_name_shown_when_logged_in(self):
         self.client.login(username=self.username, password=self.password)
         response = self.client.get('/')
-        self.assertContains(response, 'john')
+        content = response.content.decode('utf8')
+        assert 'john' in content
 
     def test_logout_shown_when_logged_in(self):
         self.client.login(username=self.username, password=self.password)
         response = self.client.get('/')
-        self.assertContains(response, '>Log out<')
+        content = response.content.decode('utf8')
+        assert '>Log out<' in content
 
     def test_login_shown_when_logged_out(self):
         response = self.client.get('/')
-        self.assertContains(response, '>Log in<')
+        content = response.content.decode('utf8')
+        assert '>Log in<' in content
 
 
 @override_settings(ROOT_URLCONF='tests.browsable_api.no_auth_urls')
@@ -58,13 +61,16 @@ class NoDropdownWithoutAuthTests(TestCase):
     def test_name_shown_when_logged_in(self):
         self.client.login(username=self.username, password=self.password)
         response = self.client.get('/')
-        self.assertContains(response, 'john')
+        content = response.content.decode('utf8')
+        assert 'john' in content
 
     def test_dropdown_not_shown_when_logged_in(self):
         self.client.login(username=self.username, password=self.password)
         response = self.client.get('/')
-        self.assertNotContains(response, '<li class="dropdown">')
+        content = response.content.decode('utf8')
+        assert '<li class="dropdown">' not in content
 
     def test_dropdown_not_shown_when_logged_out(self):
         response = self.client.get('/')
-        self.assertNotContains(response, '<li class="dropdown">')
+        content = response.content.decode('utf8')
+        assert '<li class="dropdown">' not in content

tests/browsable_api/test_browsable_nested_api.py

@@ -35,8 +35,8 @@ class DropdownWithAuthTests(TestCase):
     @override_settings(ROOT_URLCONF='tests.browsable_api.test_browsable_nested_api')
     def test_login(self):
         response = self.client.get('/api/')
-        self.assertEqual(200, response.status_code)
+        assert 200 == response.status_code
         content = response.content.decode('utf-8')
-        self.assertIn('form action="/api/"', content)
-        self.assertIn('input name="nested.one"', content)
-        self.assertIn('input name="nested.two"', content)
+        assert 'form action="/api/"' in content
+        assert 'input name="nested.one"' in content
+        assert 'input name="nested.two"' in content

tests/browsable_api/test_form_rendering.py

@@ -50,5 +50,5 @@ class TestManyPostView(TestCase):
         request = factory.post('/', data, format='json')
         with self.assertNumQueries(1):
             response = self.view(request).render()
-        self.assertEqual(response.status_code, status.HTTP_200_OK)
-        self.assertEqual(len(response.data), 3)
+        assert response.status_code == status.HTTP_200_OK
+        assert len(response.data) == 3

tests/test_atomic_requests.py

@@ -67,8 +67,8 @@ class DBTransactionTests(TestCase):
 
         with self.assertNumQueries(1):
             response = self.view(request)
-        self.assertFalse(transaction.get_rollback())
-        self.assertEqual(response.status_code, status.HTTP_200_OK)
+        assert not transaction.get_rollback()
+        assert response.status_code == status.HTTP_200_OK
         assert BasicModel.objects.count() == 1
 
 
@@ -98,7 +98,7 @@ class DBTransactionErrorTests(TestCase):
             # 3 - release savepoint
             with transaction.atomic():
                 self.assertRaises(Exception, self.view, request)
-                self.assertFalse(transaction.get_rollback())
+                assert not transaction.get_rollback()
         assert BasicModel.objects.count() == 1
 
 
@@ -128,9 +128,8 @@ class DBTransactionAPIExceptionTests(TestCase):
             # 4 - release savepoint (django>=1.8 only)
             with transaction.atomic():
                 response = self.view(request)
-                self.assertTrue(transaction.get_rollback())
-        self.assertEqual(response.status_code,
-                         status.HTTP_500_INTERNAL_SERVER_ERROR)
+                assert transaction.get_rollback()
+        assert response.status_code == status.HTTP_500_INTERNAL_SERVER_ERROR
         assert BasicModel.objects.count() == 0
 
 
@@ -151,5 +150,4 @@ class NonAtomicDBTransactionAPIExceptionTests(TransactionTestCase):
 
         # without checking connection.in_atomic_block view raises 500
         # due attempt to rollback without transaction
-        self.assertEqual(response.status_code,
-                         status.HTTP_404_NOT_FOUND)
+        assert response.status_code == status.HTTP_404_NOT_FOUND

tests/test_authentication.py

@@ -106,7 +106,7 @@ class BasicAuthTests(TestCase):
             {'example': 'example'},
             HTTP_AUTHORIZATION=auth
         )
-        self.assertEqual(response.status_code, status.HTTP_200_OK)
+        assert response.status_code == status.HTTP_200_OK
 
     def test_post_json_passing_basic_auth(self):
         """Ensure POSTing form over basic auth with correct credentials passes and does not require CSRF"""
@@ -121,7 +121,7 @@ class BasicAuthTests(TestCase):
             format='json',
             HTTP_AUTHORIZATION=auth
         )
-        self.assertEqual(response.status_code, status.HTTP_200_OK)
+        assert response.status_code == status.HTTP_200_OK
 
     def test_regression_handle_bad_base64_basic_auth_header(self):
         """Ensure POSTing JSON over basic auth with incorrectly padded Base64 string is handled correctly"""
@@ -134,12 +134,12 @@ class BasicAuthTests(TestCase):
             format='json',
             HTTP_AUTHORIZATION=auth
         )
-        self.assertEqual(response.status_code, status.HTTP_401_UNAUTHORIZED)
+        assert response.status_code == status.HTTP_401_UNAUTHORIZED
 
     def test_post_form_failing_basic_auth(self):
         """Ensure POSTing form over basic auth without correct credentials fails"""
         response = self.csrf_client.post('/basic/', {'example': 'example'})
-        self.assertEqual(response.status_code, status.HTTP_401_UNAUTHORIZED)
+        assert response.status_code == status.HTTP_401_UNAUTHORIZED
 
     def test_post_json_failing_basic_auth(self):
         """Ensure POSTing json over basic auth without correct credentials fails"""
@@ -148,8 +148,8 @@ class BasicAuthTests(TestCase):
             {'example': 'example'},
             format='json'
         )
-        self.assertEqual(response.status_code, status.HTTP_401_UNAUTHORIZED)
-        self.assertEqual(response['WWW-Authenticate'], 'Basic realm="api"')
+        assert response.status_code == status.HTTP_401_UNAUTHORIZED
+        assert response['WWW-Authenticate'] == 'Basic realm="api"'
 
 
 @override_settings(ROOT_URLCONF='tests.test_authentication')
@@ -175,9 +175,8 @@ class SessionAuthTests(TestCase):
         cf. [#1810](https://github.com/tomchristie/django-rest-framework/pull/1810)
         """
         response = self.csrf_client.get('/auth/login/')
-        self.assertContains(
-            response, '<label for="id_username">Username:</label>'
-        )
+        content = response.content.decode('utf8')
+        assert '<label for="id_username">Username:</label>' in content
 
     def test_post_form_session_auth_failing_csrf(self):
         """
@@ -185,7 +184,7 @@ class SessionAuthTests(TestCase):
         """
         self.csrf_client.login(username=self.username, password=self.password)
         response = self.csrf_client.post('/session/', {'example': 'example'})
-        self.assertEqual(response.status_code, status.HTTP_403_FORBIDDEN)
+        assert response.status_code == status.HTTP_403_FORBIDDEN
 
     def test_post_form_session_auth_passing(self):
         """
@@ -198,7 +197,7 @@ class SessionAuthTests(TestCase):
         response = self.non_csrf_client.post(
             '/session/', {'example': 'example'}
         )
-        self.assertEqual(response.status_code, status.HTTP_200_OK)
+        assert response.status_code == status.HTTP_200_OK
 
     def test_put_form_session_auth_passing(self):
         """
@@ -211,14 +210,14 @@ class SessionAuthTests(TestCase):
         response = self.non_csrf_client.put(
             '/session/', {'example': 'example'}
         )
-        self.assertEqual(response.status_code, status.HTTP_200_OK)
+        assert response.status_code == status.HTTP_200_OK
 
     def test_post_form_session_auth_failing(self):
         """
         Ensure POSTing form over session authentication without logged in user fails.
         """
         response = self.csrf_client.post('/session/', {'example': 'example'})
-        self.assertEqual(response.status_code, status.HTTP_403_FORBIDDEN)
+        assert response.status_code == status.HTTP_403_FORBIDDEN
 
 
 class BaseTokenAuthTests(object):
@@ -248,7 +247,7 @@ class BaseTokenAuthTests(object):
         response = self.csrf_client.post(
             self.path, {'example': 'example'}, HTTP_AUTHORIZATION=auth
         )
-        self.assertEqual(response.status_code, status.HTTP_200_OK)
+        assert response.status_code == status.HTTP_200_OK
 
     def test_fail_post_form_passing_nonexistent_token_auth(self):
         # use a nonexistent token key
@@ -256,7 +255,7 @@ class BaseTokenAuthTests(object):
         response = self.csrf_client.post(
             self.path, {'example': 'example'}, HTTP_AUTHORIZATION=auth
         )
-        self.assertEqual(response.status_code, status.HTTP_401_UNAUTHORIZED)
+        assert response.status_code == status.HTTP_401_UNAUTHORIZED
 
     def test_fail_post_form_passing_invalid_token_auth(self):
         # add an 'invalid' unicode character
@@ -264,7 +263,7 @@ class BaseTokenAuthTests(object):
         response = self.csrf_client.post(
             self.path, {'example': 'example'}, HTTP_AUTHORIZATION=auth
         )
-        self.assertEqual(response.status_code, status.HTTP_401_UNAUTHORIZED)
+        assert response.status_code == status.HTTP_401_UNAUTHORIZED
 
     def test_post_json_passing_token_auth(self):
         """
@@ -276,7 +275,7 @@ class BaseTokenAuthTests(object):
             self.path, {'example': 'example'},
             format='json', HTTP_AUTHORIZATION=auth
         )
-        self.assertEqual(response.status_code, status.HTTP_200_OK)
+        assert response.status_code == status.HTTP_200_OK
 
     def test_post_json_makes_one_db_query(self):
         """
@@ -298,7 +297,7 @@ class BaseTokenAuthTests(object):
         Ensure POSTing form over token auth without correct credentials fails
         """
         response = self.csrf_client.post(self.path, {'example': 'example'})
-        self.assertEqual(response.status_code, status.HTTP_401_UNAUTHORIZED)
+        assert response.status_code == status.HTTP_401_UNAUTHORIZED
 
     def test_post_json_failing_token_auth(self):
         """
@@ -307,7 +306,7 @@ class BaseTokenAuthTests(object):
         response = self.csrf_client.post(
             self.path, {'example': 'example'}, format='json'
         )
-        self.assertEqual(response.status_code, status.HTTP_401_UNAUTHORIZED)
+        assert response.status_code == status.HTTP_401_UNAUTHORIZED
 
 
 @override_settings(ROOT_URLCONF='tests.test_authentication')
@@ -319,13 +318,13 @@ class TokenAuthTests(BaseTokenAuthTests, TestCase):
         """Ensure creating a token with no key will auto-assign a key"""
         self.token.delete()
         token = self.model.objects.create(user=self.user)
-        self.assertTrue(bool(token.key))
+        assert bool(token.key)
 
     def test_generate_key_returns_string(self):
         """Ensure generate_key returns a string"""
         token = self.model()
         key = token.generate_key()
-        self.assertTrue(isinstance(key, six.string_types))
+        assert isinstance(key, six.string_types)
 
     def test_token_login_json(self):
         """Ensure token login view using JSON POST works."""
@@ -335,8 +334,8 @@ class TokenAuthTests(BaseTokenAuthTests, TestCase):
             {'username': self.username, 'password': self.password},
             format='json'
         )
-        self.assertEqual(response.status_code, status.HTTP_200_OK)
-        self.assertEqual(response.data['token'], self.key)
+        assert response.status_code == status.HTTP_200_OK
+        assert response.data['token'] == self.key
 
     def test_token_login_json_bad_creds(self):
         """
@@ -349,22 +348,24 @@ class TokenAuthTests(BaseTokenAuthTests, TestCase):
             {'username': self.username, 'password': "badpass"},
             format='json'
         )
-        self.assertEqual(response.status_code, 400)
+        assert response.status_code == 400
 
     def test_token_login_json_missing_fields(self):
         """Ensure token login view using JSON POST fails if missing fields."""
         client = APIClient(enforce_csrf_checks=True)
         response = client.post('/auth-token/',
                                {'username': self.username}, format='json')
-        self.assertEqual(response.status_code, 400)
+        assert response.status_code == 400
 
     def test_token_login_form(self):
         """Ensure token login view using form POST works."""
         client = APIClient(enforce_csrf_checks=True)
-        response = client.post('/auth-token/',
-                               {'username': self.username, 'password': self.password})
-        self.assertEqual(response.status_code, status.HTTP_200_OK)
-        self.assertEqual(response.data['token'], self.key)
+        response = client.post(
+            '/auth-token/',
+            {'username': self.username, 'password': self.password}
+        )
+        assert response.status_code == status.HTTP_200_OK
+        assert response.data['token'] == self.key
 
 
 @override_settings(ROOT_URLCONF='tests.test_authentication')
@@ -397,8 +398,8 @@ class IncorrectCredentialsTests(TestCase):
             permission_classes=()
         )
         response = view(request)
-        self.assertEqual(response.status_code, status.HTTP_403_FORBIDDEN)
-        self.assertEqual(response.data, {'detail': 'Bad credentials'})
+        assert response.status_code == status.HTTP_403_FORBIDDEN
+        assert response.data == {'detail': 'Bad credentials'}
 
 
 class FailingAuthAccessedInRenderer(TestCase):
@@ -435,7 +436,7 @@ class FailingAuthAccessedInRenderer(TestCase):
         request = factory.get('/')
         response = self.view(request)
         content = response.render().content
-        self.assertEqual(content, b'not authenticated')
+        assert content == b'not authenticated'
 
 
 class NoAuthenticationClassesTests(TestCase):
@@ -458,6 +459,5 @@ class NoAuthenticationClassesTests(TestCase):
             permission_classes=(DummyPermission,),
         )
         response = view(request)
-        self.assertEqual(response.status_code,
-                         status.HTTP_403_FORBIDDEN)
-        self.assertEqual(response.data, {'detail': 'Dummy permission message'})
+        assert response.status_code == status.HTTP_403_FORBIDDEN
+        assert response.data == {'detail': 'Dummy permission message'}

tests/test_decorators.py

@@ -56,11 +56,11 @@ class DecoratorTestCase(TestCase):
 
         request = self.factory.get('/')
         response = view(request)
-        self.assertEqual(response.status_code, status.HTTP_200_OK)
+        assert response.status_code == status.HTTP_200_OK
 
         request = self.factory.post('/')
         response = view(request)
-        self.assertEqual(response.status_code, status.HTTP_405_METHOD_NOT_ALLOWED)
+        assert response.status_code == status.HTTP_405_METHOD_NOT_ALLOWED
 
     def test_calling_put_method(self):
 
@@ -70,11 +70,11 @@ class DecoratorTestCase(TestCase):
 
         request = self.factory.put('/')
         response = view(request)
-        self.assertEqual(response.status_code, status.HTTP_200_OK)
+        assert response.status_code == status.HTTP_200_OK
 
         request = self.factory.post('/')
         response = view(request)
-        self.assertEqual(response.status_code, status.HTTP_405_METHOD_NOT_ALLOWED)
+        assert response.status_code == status.HTTP_405_METHOD_NOT_ALLOWED
 
     def test_calling_patch_method(self):
 
@@ -84,11 +84,11 @@ class DecoratorTestCase(TestCase):
 
         request = self.factory.patch('/')
         response = view(request)
-        self.assertEqual(response.status_code, status.HTTP_200_OK)
+        assert response.status_code == status.HTTP_200_OK
 
         request = self.factory.post('/')
         response = view(request)
-        self.assertEqual(response.status_code, status.HTTP_405_METHOD_NOT_ALLOWED)
+        assert response.status_code == status.HTTP_405_METHOD_NOT_ALLOWED
 
     def test_renderer_classes(self):
 
@@ -99,16 +99,15 @@ class DecoratorTestCase(TestCase):
 
         request = self.factory.get('/')
         response = view(request)
-        self.assertTrue(isinstance(response.accepted_renderer, JSONRenderer))
+        assert isinstance(response.accepted_renderer, JSONRenderer)
 
     def test_parser_classes(self):
 
         @api_view(['GET'])
         @parser_classes([JSONParser])
         def view(request):
-            self.assertEqual(len(request.parsers), 1)
-            self.assertTrue(isinstance(request.parsers[0],
-                                       JSONParser))
+            assert len(request.parsers) == 1
+            assert isinstance(request.parsers[0], JSONParser)
             return Response({})
 
         request = self.factory.get('/')
@@ -119,9 +118,8 @@ class DecoratorTestCase(TestCase):
         @api_view(['GET'])
         @authentication_classes([BasicAuthentication])
         def view(request):
-            self.assertEqual(len(request.authenticators), 1)
-            self.assertTrue(isinstance(request.authenticators[0],
-                                       BasicAuthentication))
+            assert len(request.authenticators) == 1
+            assert isinstance(request.authenticators[0], BasicAuthentication)
             return Response({})
 
         request = self.factory.get('/')
@@ -136,7 +134,7 @@ class DecoratorTestCase(TestCase):
 
         request = self.factory.get('/')
         response = view(request)
-        self.assertEqual(response.status_code, status.HTTP_403_FORBIDDEN)
+        assert response.status_code == status.HTTP_403_FORBIDDEN
 
     def test_throttle_classes(self):
         class OncePerDayUserThrottle(UserRateThrottle):
@@ -149,7 +147,7 @@ class DecoratorTestCase(TestCase):
 
         request = self.factory.get('/')
         response = view(request)
-        self.assertEqual(response.status_code, status.HTTP_200_OK)
+        assert response.status_code == status.HTTP_200_OK
 
         response = view(request)
-        self.assertEqual(response.status_code, status.HTTP_429_TOO_MANY_REQUESTS)
+        assert response.status_code == status.HTTP_429_TOO_MANY_REQUESTS

tests/test_description.py

@@ -60,7 +60,7 @@ class TestViewNamesAndDescriptions(TestCase):
         """
         class MockView(APIView):
             pass
-        self.assertEqual(MockView().get_view_name(), 'Mock')
+        assert MockView().get_view_name() == 'Mock'
 
     def test_view_description_uses_docstring(self):
         """Ensure view descriptions are based on the docstring."""
@@ -80,7 +80,7 @@ class TestViewNamesAndDescriptions(TestCase):
 
             # hash style header #"""
 
-        self.assertEqual(MockView().get_view_description(), DESCRIPTION)
+        assert MockView().get_view_description() == DESCRIPTION
 
     def test_view_description_can_be_empty(self):
         """
@@ -89,7 +89,7 @@ class TestViewNamesAndDescriptions(TestCase):
         """
         class MockView(APIView):
             pass
-        self.assertEqual(MockView().get_view_description(), '')
+        assert MockView().get_view_description() == ''
 
     def test_view_description_can_be_promise(self):
         """
@@ -111,7 +111,7 @@ class TestViewNamesAndDescriptions(TestCase):
         class MockView(APIView):
             __doc__ = MockLazyStr("a gettext string")
 
-        self.assertEqual(MockView().get_view_description(), 'a gettext string')
+        assert MockView().get_view_description() == 'a gettext string'
 
     def test_markdown(self):
         """
@@ -120,7 +120,7 @@ class TestViewNamesAndDescriptions(TestCase):
         if apply_markdown:
             gte_21_match = apply_markdown(DESCRIPTION) == MARKED_DOWN_gte_21
             lt_21_match = apply_markdown(DESCRIPTION) == MARKED_DOWN_lt_21
-            self.assertTrue(gte_21_match or lt_21_match)
+            assert gte_21_match or lt_21_match
 
 
 def test_dedent_tabs():

tests/test_encoders.py

@@ -20,21 +20,21 @@ class JSONEncoderTests(TestCase):
         Tests encoding a decimal
         """
         d = Decimal(3.14)
-        self.assertEqual(d, float(d))
+        assert d == float(d)
 
     def test_encode_datetime(self):
         """
         Tests encoding a datetime object
         """
         current_time = datetime.now()
-        self.assertEqual(self.encoder.default(current_time), current_time.isoformat())
+        assert self.encoder.default(current_time) == current_time.isoformat()
 
     def test_encode_time(self):
         """
         Tests encoding a timezone
         """
         current_time = datetime.now().time()
-        self.assertEqual(self.encoder.default(current_time), current_time.isoformat()[:12])
+        assert self.encoder.default(current_time) == current_time.isoformat()[:12]
 
     def test_encode_time_tz(self):
         """
@@ -64,18 +64,18 @@ class JSONEncoderTests(TestCase):
         Tests encoding a date object
         """
         current_date = date.today()
-        self.assertEqual(self.encoder.default(current_date), current_date.isoformat())
+        assert self.encoder.default(current_date) == current_date.isoformat()
 
     def test_encode_timedelta(self):
         """
         Tests encoding a timedelta object
         """
         delta = timedelta(hours=1)
-        self.assertEqual(self.encoder.default(delta), str(delta.total_seconds()))
+        assert self.encoder.default(delta) == str(delta.total_seconds())
 
     def test_encode_uuid(self):
         """
         Tests encoding a UUID object
         """
         unique_id = uuid4()
-        self.assertEqual(self.encoder.default(unique_id), str(unique_id))
+        assert self.encoder.default(unique_id) == str(unique_id)

tests/test_exceptions.py

@@ -16,28 +16,22 @@ class ExceptionTestCase(TestCase):
         example = "string"
         lazy_example = _(example)
 
-        self.assertEqual(
-            _get_error_details(lazy_example),
-            example
-        )
+        assert _get_error_details(lazy_example) == example
+
         assert isinstance(
             _get_error_details(lazy_example),
             ErrorDetail
         )
 
-        self.assertEqual(
-            _get_error_details({'nested': lazy_example})['nested'],
-            example
-        )
+        assert _get_error_details({'nested': lazy_example})['nested'] == example
+
         assert isinstance(
             _get_error_details({'nested': lazy_example})['nested'],
             ErrorDetail
         )
 
-        self.assertEqual(
-            _get_error_details([[lazy_example]])[0][0],
-            example
-        )
+        assert _get_error_details([[lazy_example]])[0][0] == example
+
         assert isinstance(
             _get_error_details([[lazy_example]])[0][0],
             ErrorDetail

tests/test_fields.py

@@ -1014,16 +1014,16 @@ class TestLocalizedDecimalField(TestCase):
     @override_settings(USE_L10N=True, LANGUAGE_CODE='pl')
     def test_to_internal_value(self):
         field = serializers.DecimalField(max_digits=2, decimal_places=1, localize=True)
-        self.assertEqual(field.to_internal_value('1,1'), Decimal('1.1'))
+        assert field.to_internal_value('1,1') == Decimal('1.1')
 
     @override_settings(USE_L10N=True, LANGUAGE_CODE='pl')
     def test_to_representation(self):
         field = serializers.DecimalField(max_digits=2, decimal_places=1, localize=True)
-        self.assertEqual(field.to_representation(Decimal('1.1')), '1,1')
+        assert field.to_representation(Decimal('1.1')) == '1,1'
 
     def test_localize_forces_coerce_to_string(self):
         field = serializers.DecimalField(max_digits=2, decimal_places=1, coerce_to_string=False, localize=True)
-        self.assertTrue(isinstance(field.to_representation(Decimal('1.1')), six.string_types))
+        assert isinstance(field.to_representation(Decimal('1.1')), six.string_types)
 
 
 class TestQuantizedValueForDecimal(TestCase):
@@ -1031,19 +1031,19 @@ class TestQuantizedValueForDecimal(TestCase):
         field = serializers.DecimalField(max_digits=4, decimal_places=2)
         value = field.to_internal_value(12).as_tuple()
         expected_digit_tuple = (0, (1, 2, 0, 0), -2)
-        self.assertEqual(value, expected_digit_tuple)
+        assert value == expected_digit_tuple
 
     def test_string_quantized_value_for_decimal(self):
         field = serializers.DecimalField(max_digits=4, decimal_places=2)
         value = field.to_internal_value('12').as_tuple()
         expected_digit_tuple = (0, (1, 2, 0, 0), -2)
-        self.assertEqual(value, expected_digit_tuple)
+        assert value == expected_digit_tuple
 
     def test_part_precision_string_quantized_value_for_decimal(self):
         field = serializers.DecimalField(max_digits=4, decimal_places=2)
         value = field.to_internal_value('12.0').as_tuple()
         expected_digit_tuple = (0, (1, 2, 0, 0), -2)
-        self.assertEqual(value, expected_digit_tuple)
+        assert value == expected_digit_tuple
 
 
 class TestNoDecimalPlaces(FieldValues):

tests/test_filters.py

@@ -155,8 +155,8 @@ class IntegrationTestFiltering(CommonFilteringTestCase):
             request = factory.get('/')
             response = view(request).render()
 
-        self.assertEqual(response.status_code, status.HTTP_200_OK)
-        self.assertEqual(response.data, self.data)
+        assert response.status_code == status.HTTP_200_OK
+        assert response.data == self.data
 
         self.assertTrue(issubclass(w[-1].category, PendingDeprecationWarning))
         self.assertIn("'rest_framework.filters.DjangoFilterBackend' is pending deprecation.", str(w[-1].message))
@@ -175,9 +175,9 @@ class IntegrationTestFiltering(CommonFilteringTestCase):
             request = factory.get('/')
             response = view(request).render()
 
-        self.assertEqual(response.status_code, status.HTTP_200_OK)
-        self.assertEqual(response.data, self.data)
-        self.assertEqual(len(w), 0)
+        assert response.status_code == status.HTTP_200_OK
+        assert response.data == self.data
+        assert len(w) == 0
 
     @unittest.skipUnless(django_filters, 'django-filter not installed')
     def test_get_filtered_fields_root_view(self):
@@ -189,24 +189,24 @@ class IntegrationTestFiltering(CommonFilteringTestCase):
         # Basic test with no filter.
         request = factory.get('/')
         response = view(request).render()
-        self.assertEqual(response.status_code, status.HTTP_200_OK)
-        self.assertEqual(response.data, self.data)
+        assert response.status_code == status.HTTP_200_OK
+        assert response.data == self.data
 
         # Tests that the decimal filter works.
         search_decimal = Decimal('2.25')
         request = factory.get('/', {'decimal': '%s' % search_decimal})
         response = view(request).render()
-        self.assertEqual(response.status_code, status.HTTP_200_OK)
+        assert response.status_code == status.HTTP_200_OK
         expected_data = [f for f in self.data if Decimal(f['decimal']) == search_decimal]
-        self.assertEqual(response.data, expected_data)
+        assert response.data == expected_data
 
         # Tests that the date filter works.
         search_date = datetime.date(2012, 9, 22)
         request = factory.get('/', {'date': '%s' % search_date})  # search_date str: '2012-09-22'
         response = view(request).render()
-        self.assertEqual(response.status_code, status.HTTP_200_OK)
+        assert response.status_code == status.HTTP_200_OK
         expected_data = [f for f in self.data if parse_date(f['date']) == search_date]
-        self.assertEqual(response.data, expected_data)
+        assert response.data == expected_data
 
     @unittest.skipUnless(django_filters, 'django-filter not installed')
     def test_filter_with_queryset(self):
@@ -219,9 +219,9 @@ class IntegrationTestFiltering(CommonFilteringTestCase):
         search_decimal = Decimal('2.25')
         request = factory.get('/', {'decimal': '%s' % search_decimal})
         response = view(request).render()
-        self.assertEqual(response.status_code, status.HTTP_200_OK)
+        assert response.status_code == status.HTTP_200_OK
         expected_data = [f for f in self.data if Decimal(f['decimal']) == search_decimal]
-        self.assertEqual(response.data, expected_data)
+        assert response.data == expected_data
 
     @unittest.skipUnless(django_filters, 'django-filter not installed')
     def test_filter_with_get_queryset_only(self):
@@ -245,32 +245,32 @@ class IntegrationTestFiltering(CommonFilteringTestCase):
         # Basic test with no filter.
         request = factory.get('/')
         response = view(request).render()
-        self.assertEqual(response.status_code, status.HTTP_200_OK)
-        self.assertEqual(response.data, self.data)
+        assert response.status_code == status.HTTP_200_OK
+        assert response.data == self.data
 
         # Tests that the decimal filter set with 'lt' in the filter class works.
         search_decimal = Decimal('4.25')
         request = factory.get('/', {'decimal': '%s' % search_decimal})
         response = view(request).render()
-        self.assertEqual(response.status_code, status.HTTP_200_OK)
+        assert response.status_code == status.HTTP_200_OK
         expected_data = [f for f in self.data if Decimal(f['decimal']) < search_decimal]
-        self.assertEqual(response.data, expected_data)
+        assert response.data == expected_data
 
         # Tests that the date filter set with 'gt' in the filter class works.
         search_date = datetime.date(2012, 10, 2)
         request = factory.get('/', {'date': '%s' % search_date})  # search_date str: '2012-10-02'
         response = view(request).render()
-        self.assertEqual(response.status_code, status.HTTP_200_OK)
+        assert response.status_code == status.HTTP_200_OK
         expected_data = [f for f in self.data if parse_date(f['date']) > search_date]
-        self.assertEqual(response.data, expected_data)
+        assert response.data == expected_data
 
         # Tests that the text filter set with 'icontains' in the filter class works.
         search_text = 'ff'
         request = factory.get('/', {'text': '%s' % search_text})
         response = view(request).render()
-        self.assertEqual(response.status_code, status.HTTP_200_OK)
+        assert response.status_code == status.HTTP_200_OK
         expected_data = [f for f in self.data if search_text in f['text'].lower()]
-        self.assertEqual(response.data, expected_data)
+        assert response.data == expected_data
 
         # Tests that multiple filters works.
         search_decimal = Decimal('5.25')
@@ -280,10 +280,10 @@ class IntegrationTestFiltering(CommonFilteringTestCase):
             'date': '%s' % (search_date,)
         })
         response = view(request).render()
-        self.assertEqual(response.status_code, status.HTTP_200_OK)
+        assert response.status_code == status.HTTP_200_OK
         expected_data = [f for f in self.data if parse_date(f['date']) > search_date and
                          Decimal(f['decimal']) < search_decimal]
-        self.assertEqual(response.data, expected_data)
+        assert response.data == expected_data
 
     @unittest.skipUnless(django_filters, 'django-filter not installed')
     def test_incorrectly_configured_filter(self):
@@ -304,8 +304,8 @@ class IntegrationTestFiltering(CommonFilteringTestCase):
 
         request = factory.get('/?text=aaa')
         response = view(request).render()
-        self.assertEqual(response.status_code, status.HTTP_200_OK)
-        self.assertEqual(len(response.data), 1)
+        assert response.status_code == status.HTTP_200_OK
+        assert len(response.data) == 1
 
     @unittest.skipUnless(django_filters, 'django-filter not installed')
     def test_base_model_filter_with_proxy(self):
@@ -316,8 +316,8 @@ class IntegrationTestFiltering(CommonFilteringTestCase):
 
         request = factory.get('/?text=aaa')
         response = view(request).render()
-        self.assertEqual(response.status_code, status.HTTP_200_OK)
-        self.assertEqual(len(response.data), 1)
+        assert response.status_code == status.HTTP_200_OK
+        assert len(response.data) == 1
 
     @unittest.skipUnless(django_filters, 'django-filter not installed')
     def test_unknown_filter(self):
@@ -329,7 +329,7 @@ class IntegrationTestFiltering(CommonFilteringTestCase):
         search_integer = 10
         request = factory.get('/', {'integer': '%s' % search_integer})
         response = view(request).render()
-        self.assertEqual(response.status_code, status.HTTP_200_OK)
+        assert response.status_code == status.HTTP_200_OK
 
 
 @override_settings(ROOT_URLCONF='tests.test_filters')
@@ -351,8 +351,8 @@ class IntegrationTestDetailFiltering(CommonFilteringTestCase):
 
         # Basic test with no filter.
         response = self.client.get(self._get_url(item))
-        self.assertEqual(response.status_code, status.HTTP_200_OK)
-        self.assertEqual(response.data, data)
+        assert response.status_code == status.HTTP_200_OK
+        assert response.data == data
 
         # Tests that the decimal filter set that should fail.
         search_decimal = Decimal('4.25')
@@ -360,7 +360,7 @@ class IntegrationTestDetailFiltering(CommonFilteringTestCase):
         response = self.client.get(
             '{url}'.format(url=self._get_url(high_item)),
             {'decimal': '{param}'.format(param=search_decimal)})
-        self.assertEqual(response.status_code, status.HTTP_404_NOT_FOUND)
+        assert response.status_code == status.HTTP_404_NOT_FOUND
 
         # Tests that the decimal filter set that should succeed.
         search_decimal = Decimal('4.25')
@@ -369,8 +369,8 @@ class IntegrationTestDetailFiltering(CommonFilteringTestCase):
         response = self.client.get(
             '{url}'.format(url=self._get_url(low_item)),
             {'decimal': '{param}'.format(param=search_decimal)})
-        self.assertEqual(response.status_code, status.HTTP_200_OK)
-        self.assertEqual(response.data, low_item_data)
+        assert response.status_code == status.HTTP_200_OK
+        assert response.data == low_item_data
 
         # Tests that multiple filters works.
         search_decimal = Decimal('5.25')
@@ -382,8 +382,8 @@ class IntegrationTestDetailFiltering(CommonFilteringTestCase):
                 'decimal': '{decimal}'.format(decimal=search_decimal),
                 'date': '{date}'.format(date=search_date)
             })
-        self.assertEqual(response.status_code, status.HTTP_200_OK)
-        self.assertEqual(response.data, valid_item_data)
+        assert response.status_code == status.HTTP_200_OK
+        assert response.data == valid_item_data
 
 
 class SearchFilterModel(models.Model):
@@ -424,13 +424,10 @@ class SearchFilterTests(TestCase):
         view = SearchListView.as_view()
         request = factory.get('/', {'search': 'b'})
         response = view(request)
-        self.assertEqual(
-            response.data,
-            [
+        assert response.data == [
             {'id': 1, 'title': 'z', 'text': 'abc'},
             {'id': 2, 'title': 'zz', 'text': 'bcd'}
         ]
-        )
 
     def test_exact_search(self):
         class SearchListView(generics.ListAPIView):
@@ -442,12 +439,9 @@ class SearchFilterTests(TestCase):
         view = SearchListView.as_view()
         request = factory.get('/', {'search': 'zzz'})
         response = view(request)
-        self.assertEqual(
-            response.data,
-            [
+        assert response.data == [
             {'id': 3, 'title': 'zzz', 'text': 'cde'}
         ]
-        )
 
     def test_startswith_search(self):
         class SearchListView(generics.ListAPIView):
@@ -459,12 +453,9 @@ class SearchFilterTests(TestCase):
         view = SearchListView.as_view()
         request = factory.get('/', {'search': 'b'})
         response = view(request)
-        self.assertEqual(
-            response.data,
-            [
+        assert response.data == [
             {'id': 2, 'title': 'zz', 'text': 'bcd'}
         ]
-        )
 
     def test_regexp_search(self):
         class SearchListView(generics.ListAPIView):
@@ -476,12 +467,9 @@ class SearchFilterTests(TestCase):
         view = SearchListView.as_view()
         request = factory.get('/', {'search': 'z{2} ^b'})
         response = view(request)
-        self.assertEqual(
-            response.data,
-            [
+        assert response.data == [
             {'id': 2, 'title': 'zz', 'text': 'bcd'}
         ]
-        )
 
     def test_search_with_nonstandard_search_param(self):
         with override_settings(REST_FRAMEWORK={'SEARCH_PARAM': 'query'}):
@@ -496,13 +484,10 @@ class SearchFilterTests(TestCase):
             view = SearchListView.as_view()
             request = factory.get('/', {'query': 'b'})
             response = view(request)
-            self.assertEqual(
-                response.data,
-                [
+            assert response.data == [
                 {'id': 1, 'title': 'z', 'text': 'abc'},
                 {'id': 2, 'title': 'zz', 'text': 'bcd'}
             ]
-            )
 
         reload_module(filters)
 
@@ -528,15 +513,13 @@ class SearchFilterFkTests(TestCase):
         filter_ = filters.SearchFilter()
         prefixes = [''] + list(filter_.lookup_prefixes)
         for prefix in prefixes:
-            self.assertFalse(
-                filter_.must_call_distinct(
-                    SearchFilterModelFk._meta, ["%stitle" % prefix]
-                )
-            )
-            self.assertFalse(
-                filter_.must_call_distinct(
-                    SearchFilterModelFk._meta, ["%stitle" % prefix, "%sattribute__label" % prefix]
+            assert not filter_.must_call_distinct(
+                SearchFilterModelFk._meta,
+                ["%stitle" % prefix]
             )
+            assert not filter_.must_call_distinct(
+                SearchFilterModelFk._meta,
+                ["%stitle" % prefix, "%sattribute__label" % prefix]
             )
 
     def test_must_call_distinct_restores_meta_for_each_field(self):
@@ -545,10 +528,9 @@ class SearchFilterFkTests(TestCase):
         filter_ = filters.SearchFilter()
         prefixes = [''] + list(filter_.lookup_prefixes)
         for prefix in prefixes:
-            self.assertFalse(
-                filter_.must_call_distinct(
-                    SearchFilterModelFk._meta, ["%sattribute__label" % prefix, "%stitle" % prefix]
-                )
+            assert not filter_.must_call_distinct(
+                SearchFilterModelFk._meta,
+                ["%sattribute__label" % prefix, "%stitle" % prefix]
             )
 
 
@@ -596,21 +578,20 @@ class SearchFilterM2MTests(TestCase):
         view = SearchListView.as_view()
         request = factory.get('/', {'search': 'zz'})
         response = view(request)
-        self.assertEqual(len(response.data), 1)
+        assert len(response.data) == 1
 
     def test_must_call_distinct(self):
         filter_ = filters.SearchFilter()
         prefixes = [''] + list(filter_.lookup_prefixes)
         for prefix in prefixes:
-            self.assertFalse(
-                filter_.must_call_distinct(
-                    SearchFilterModelM2M._meta, ["%stitle" % prefix]
-                )
-            )
-            self.assertTrue(
-                filter_.must_call_distinct(
-                    SearchFilterModelM2M._meta, ["%stitle" % prefix, "%sattributes__label" % prefix]
+            assert not filter_.must_call_distinct(
+                SearchFilterModelM2M._meta,
+                ["%stitle" % prefix]
             )
+
+            assert filter_.must_call_distinct(
+                SearchFilterModelM2M._meta,
+                ["%stitle" % prefix, "%sattributes__label" % prefix]
             )
 
 
@@ -672,14 +653,11 @@ class DjangoFilterOrderingTests(TestCase):
         request = factory.get('/')
         response = view(request)
 
-        self.assertEqual(
-            response.data,
-            [
+        assert response.data == [
             {'id': 3, 'date': '2014-10-08', 'text': 'cde'},
             {'id': 2, 'date': '2013-10-08', 'text': 'bcd'},
             {'id': 1, 'date': '2012-10-08', 'text': 'abc'}
         ]
-        )
 
 
 class OrderingFilterTests(TestCase):
@@ -713,14 +691,11 @@ class OrderingFilterTests(TestCase):
         view = OrderingListView.as_view()
         request = factory.get('/', {'ordering': 'text'})
         response = view(request)
-        self.assertEqual(
-            response.data,
-            [
+        assert response.data == [
             {'id': 1, 'title': 'zyx', 'text': 'abc'},
             {'id': 2, 'title': 'yxw', 'text': 'bcd'},
             {'id': 3, 'title': 'xwv', 'text': 'cde'},
         ]
-        )
 
     def test_reverse_ordering(self):
         class OrderingListView(generics.ListAPIView):
@@ -733,14 +708,11 @@ class OrderingFilterTests(TestCase):
         view = OrderingListView.as_view()
         request = factory.get('/', {'ordering': '-text'})
         response = view(request)
-        self.assertEqual(
-            response.data,
-            [
+        assert response.data == [
             {'id': 3, 'title': 'xwv', 'text': 'cde'},
             {'id': 2, 'title': 'yxw', 'text': 'bcd'},
             {'id': 1, 'title': 'zyx', 'text': 'abc'},
         ]
-        )
 
     def test_incorrectfield_ordering(self):
         class OrderingListView(generics.ListAPIView):
@@ -753,14 +725,11 @@ class OrderingFilterTests(TestCase):
         view = OrderingListView.as_view()
         request = factory.get('/', {'ordering': 'foobar'})
         response = view(request)
-        self.assertEqual(
-            response.data,
-            [
+        assert response.data == [
             {'id': 3, 'title': 'xwv', 'text': 'cde'},
             {'id': 2, 'title': 'yxw', 'text': 'bcd'},
             {'id': 1, 'title': 'zyx', 'text': 'abc'},
         ]
-        )
 
     def test_default_ordering(self):
         class OrderingListView(generics.ListAPIView):
@@ -773,14 +742,11 @@ class OrderingFilterTests(TestCase):
         view = OrderingListView.as_view()
         request = factory.get('')
         response = view(request)
-        self.assertEqual(
-            response.data,
-            [
+        assert response.data == [
             {'id': 3, 'title': 'xwv', 'text': 'cde'},
             {'id': 2, 'title': 'yxw', 'text': 'bcd'},
             {'id': 1, 'title': 'zyx', 'text': 'abc'},
         ]
-        )
 
     def test_default_ordering_using_string(self):
         class OrderingListView(generics.ListAPIView):
@@ -793,14 +759,11 @@ class OrderingFilterTests(TestCase):
         view = OrderingListView.as_view()
         request = factory.get('')
         response = view(request)
-        self.assertEqual(
-            response.data,
-            [
+        assert response.data == [
             {'id': 3, 'title': 'xwv', 'text': 'cde'},
             {'id': 2, 'title': 'yxw', 'text': 'bcd'},
             {'id': 1, 'title': 'zyx', 'text': 'abc'},
         ]
-        )
 
     def test_ordering_by_aggregate_field(self):
         # create some related models to aggregate order by
@@ -824,14 +787,11 @@ class OrderingFilterTests(TestCase):
         view = OrderingListView.as_view()
         request = factory.get('/', {'ordering': 'relateds__count'})
         response = view(request)
-        self.assertEqual(
-            response.data,
-            [
+        assert response.data == [
             {'id': 1, 'title': 'zyx', 'text': 'abc'},
             {'id': 3, 'title': 'xwv', 'text': 'cde'},
             {'id': 2, 'title': 'yxw', 'text': 'bcd'},
         ]
-        )
 
     def test_ordering_with_nonstandard_ordering_param(self):
         with override_settings(REST_FRAMEWORK={'ORDERING_PARAM': 'order'}):
@@ -847,14 +807,11 @@ class OrderingFilterTests(TestCase):
             view = OrderingListView.as_view()
             request = factory.get('/', {'order': 'text'})
             response = view(request)
-            self.assertEqual(
-                response.data,
-                [
+            assert response.data == [
                 {'id': 1, 'title': 'zyx', 'text': 'abc'},
                 {'id': 2, 'title': 'yxw', 'text': 'bcd'},
                 {'id': 3, 'title': 'xwv', 'text': 'cde'},
             ]
-            )
 
         reload_module(filters)
 
@@ -884,14 +841,11 @@ class OrderingFilterTests(TestCase):
         view = OrderingListView.as_view()
         request = factory.get('/', {'ordering': 'text'})
         response = view(request)
-        self.assertEqual(
-            response.data,
-            [
+        assert response.data == [
             {'id': 1, 'title': 'zyx', 'text': 'abc'},
             {'id': 2, 'title': 'yxw', 'text': 'bcd'},
             {'id': 3, 'title': 'xwv', 'text': 'cde'},
         ]
-        )
 
     def test_ordering_with_improper_configuration(self):
         class OrderingListView(generics.ListAPIView):
@@ -967,14 +921,11 @@ class SensitiveOrderingFilterTests(TestCase):
                 username_field = 'username'
 
             # Note: Inverse username ordering correctly applied.
-            self.assertEqual(
-                response.data,
-                [
+            assert response.data == [
                 {'id': 3, username_field: 'userC'},
                 {'id': 2, username_field: 'userB'},
                 {'id': 1, username_field: 'userA'},
             ]
-            )
 
     def test_cannot_order_by_non_serializer_fields(self):
         for serializer_cls in [
@@ -997,11 +948,8 @@ class SensitiveOrderingFilterTests(TestCase):
                 username_field = 'username'
 
             # Note: The passwords are not in order.  Default ordering is used.
-            self.assertEqual(
-                response.data,
-                [
+            assert response.data == [
                 {'id': 1, username_field: 'userA'},  # PassB
                 {'id': 2, username_field: 'userB'},  # PassC
                 {'id': 3, username_field: 'userC'},  # PassA
             ]
-            )

tests/test_generics.py

@@ -98,8 +98,8 @@ class TestRootView(TestCase):
         request = factory.get('/')
         with self.assertNumQueries(1):
             response = self.view(request).render()
-        self.assertEqual(response.status_code, status.HTTP_200_OK)
-        self.assertEqual(response.data, self.data)
+        assert response.status_code == status.HTTP_200_OK
+        assert response.data == self.data
 
     def test_post_root_view(self):
         """
@@ -109,10 +109,10 @@ class TestRootView(TestCase):
         request = factory.post('/', data, format='json')
         with self.assertNumQueries(1):
             response = self.view(request).render()
-        self.assertEqual(response.status_code, status.HTTP_201_CREATED)
-        self.assertEqual(response.data, {'id': 4, 'text': 'foobar'})
+        assert response.status_code == status.HTTP_201_CREATED
+        assert response.data == {'id': 4, 'text': 'foobar'}
         created = self.objects.get(id=4)
-        self.assertEqual(created.text, 'foobar')
+        assert created.text == 'foobar'
 
     def test_put_root_view(self):
         """
@@ -122,8 +122,8 @@ class TestRootView(TestCase):
         request = factory.put('/', data, format='json')
         with self.assertNumQueries(0):
             response = self.view(request).render()
-        self.assertEqual(response.status_code, status.HTTP_405_METHOD_NOT_ALLOWED)
-        self.assertEqual(response.data, {"detail": 'Method "PUT" not allowed.'})
+        assert response.status_code == status.HTTP_405_METHOD_NOT_ALLOWED
+        assert response.data == {"detail": 'Method "PUT" not allowed.'}
 
     def test_delete_root_view(self):
         """
@@ -132,8 +132,8 @@ class TestRootView(TestCase):
         request = factory.delete('/')
         with self.assertNumQueries(0):
             response = self.view(request).render()
-        self.assertEqual(response.status_code, status.HTTP_405_METHOD_NOT_ALLOWED)
-        self.assertEqual(response.data, {"detail": 'Method "DELETE" not allowed.'})
+        assert response.status_code == status.HTTP_405_METHOD_NOT_ALLOWED
+        assert response.data == {"detail": 'Method "DELETE" not allowed.'}
 
     def test_post_cannot_set_id(self):
         """
@@ -143,10 +143,10 @@ class TestRootView(TestCase):
         request = factory.post('/', data, format='json')
         with self.assertNumQueries(1):
             response = self.view(request).render()
-        self.assertEqual(response.status_code, status.HTTP_201_CREATED)
-        self.assertEqual(response.data, {'id': 4, 'text': 'foobar'})
+        assert response.status_code == status.HTTP_201_CREATED
+        assert response.data == {'id': 4, 'text': 'foobar'}
         created = self.objects.get(id=4)
-        self.assertEqual(created.text, 'foobar')
+        assert created.text == 'foobar'
 
     def test_post_error_root_view(self):
         """
@@ -156,7 +156,7 @@ class TestRootView(TestCase):
         request = factory.post('/', data, HTTP_ACCEPT='text/html')
         response = self.view(request).render()
         expected_error = '<span class="help-block">Ensure this field has no more than 100 characters.</span>'
-        self.assertIn(expected_error, response.rendered_content.decode('utf-8'))
+        assert expected_error in response.rendered_content.decode('utf-8')
 
 
 EXPECTED_QUERIES_FOR_PUT = 2
@@ -185,8 +185,8 @@ class TestInstanceView(TestCase):
         request = factory.get('/1')
         with self.assertNumQueries(1):
             response = self.view(request, pk=1).render()
-        self.assertEqual(response.status_code, status.HTTP_200_OK)
-        self.assertEqual(response.data, self.data[0])
+        assert response.status_code == status.HTTP_200_OK
+        assert response.data == self.data[0]
 
     def test_post_instance_view(self):
         """
@@ -196,8 +196,8 @@ class TestInstanceView(TestCase):
         request = factory.post('/', data, format='json')
         with self.assertNumQueries(0):
             response = self.view(request).render()
-        self.assertEqual(response.status_code, status.HTTP_405_METHOD_NOT_ALLOWED)
-        self.assertEqual(response.data, {"detail": 'Method "POST" not allowed.'})
+        assert response.status_code == status.HTTP_405_METHOD_NOT_ALLOWED
+        assert response.data == {"detail": 'Method "POST" not allowed.'}
 
     def test_put_instance_view(self):
         """
@@ -207,10 +207,10 @@ class TestInstanceView(TestCase):
         request = factory.put('/1', data, format='json')
         with self.assertNumQueries(EXPECTED_QUERIES_FOR_PUT):
             response = self.view(request, pk='1').render()
-        self.assertEqual(response.status_code, status.HTTP_200_OK)
-        self.assertEqual(dict(response.data), {'id': 1, 'text': 'foobar'})
+        assert response.status_code == status.HTTP_200_OK
+        assert dict(response.data) == {'id': 1, 'text': 'foobar'}
         updated = self.objects.get(id=1)
-        self.assertEqual(updated.text, 'foobar')
+        assert updated.text == 'foobar'
 
     def test_patch_instance_view(self):
         """
@@ -221,10 +221,10 @@ class TestInstanceView(TestCase):
 
         with self.assertNumQueries(EXPECTED_QUERIES_FOR_PUT):
             response = self.view(request, pk=1).render()
-        self.assertEqual(response.status_code, status.HTTP_200_OK)
-        self.assertEqual(response.data, {'id': 1, 'text': 'foobar'})
+        assert response.status_code == status.HTTP_200_OK
+        assert response.data == {'id': 1, 'text': 'foobar'}
         updated = self.objects.get(id=1)
-        self.assertEqual(updated.text, 'foobar')
+        assert updated.text == 'foobar'
 
     def test_delete_instance_view(self):
         """
@@ -233,10 +233,10 @@ class TestInstanceView(TestCase):
         request = factory.delete('/1')
         with self.assertNumQueries(2):
             response = self.view(request, pk=1).render()
-        self.assertEqual(response.status_code, status.HTTP_204_NO_CONTENT)
-        self.assertEqual(response.content, six.b(''))
+        assert response.status_code == status.HTTP_204_NO_CONTENT
+        assert response.content == six.b('')
         ids = [obj.id for obj in self.objects.all()]
-        self.assertEqual(ids, [2, 3])
+        assert ids == [2, 3]
 
     def test_get_instance_view_incorrect_arg(self):
         """
@@ -246,7 +246,7 @@ class TestInstanceView(TestCase):
         request = factory.get('/a')
         with self.assertNumQueries(0):
             response = self.view(request, pk='a').render()
-        self.assertEqual(response.status_code, status.HTTP_404_NOT_FOUND)
+        assert response.status_code == status.HTTP_404_NOT_FOUND
 
     def test_put_cannot_set_id(self):
         """
@@ -256,10 +256,10 @@ class TestInstanceView(TestCase):
         request = factory.put('/1', data, format='json')
         with self.assertNumQueries(EXPECTED_QUERIES_FOR_PUT):
             response = self.view(request, pk=1).render()
-        self.assertEqual(response.status_code, status.HTTP_200_OK)
-        self.assertEqual(response.data, {'id': 1, 'text': 'foobar'})
+        assert response.status_code == status.HTTP_200_OK
+        assert response.data == {'id': 1, 'text': 'foobar'}
         updated = self.objects.get(id=1)
-        self.assertEqual(updated.text, 'foobar')
+        assert updated.text == 'foobar'
 
     def test_put_to_deleted_instance(self):
         """
@@ -271,7 +271,7 @@ class TestInstanceView(TestCase):
         request = factory.put('/1', data, format='json')
         with self.assertNumQueries(1):
             response = self.view(request, pk=1).render()
-        self.assertEqual(response.status_code, status.HTTP_404_NOT_FOUND)
+        assert response.status_code == status.HTTP_404_NOT_FOUND
 
     def test_put_to_filtered_out_instance(self):
         """
@@ -282,7 +282,7 @@ class TestInstanceView(TestCase):
         filtered_out_pk = BasicModel.objects.filter(text='filtered out')[0].pk
         request = factory.put('/{0}'.format(filtered_out_pk), data, format='json')
         response = self.view(request, pk=filtered_out_pk).render()
-        self.assertEqual(response.status_code, status.HTTP_404_NOT_FOUND)
+        assert response.status_code == status.HTTP_404_NOT_FOUND
 
     def test_patch_cannot_create_an_object(self):
         """
@@ -292,8 +292,8 @@ class TestInstanceView(TestCase):
         request = factory.patch('/999', data, format='json')
         with self.assertNumQueries(1):
             response = self.view(request, pk=999).render()
-        self.assertEqual(response.status_code, status.HTTP_404_NOT_FOUND)
-        self.assertFalse(self.objects.filter(id=999).exists())
+        assert response.status_code == status.HTTP_404_NOT_FOUND
+        assert not self.objects.filter(id=999).exists()
 
     def test_put_error_instance_view(self):
         """
@@ -303,7 +303,7 @@ class TestInstanceView(TestCase):
         request = factory.put('/', data, HTTP_ACCEPT='text/html')
         response = self.view(request, pk=1).render()
         expected_error = '<span class="help-block">Ensure this field has no more than 100 characters.</span>'
-        self.assertIn(expected_error, response.rendered_content.decode('utf-8'))
+        assert expected_error in response.rendered_content.decode('utf-8')
 
 
 class TestFKInstanceView(TestCase):
@@ -363,8 +363,8 @@ class TestOverriddenGetObject(TestCase):
         request = factory.get('/1')
         with self.assertNumQueries(1):
             response = self.view(request, pk=1).render()
-        self.assertEqual(response.status_code, status.HTTP_200_OK)
-        self.assertEqual(response.data, self.data[0])
+        assert response.status_code == status.HTTP_200_OK
+        assert response.data == self.data[0]
 
 
 # Regression test for #285
@@ -394,9 +394,9 @@ class TestCreateModelWithAutoNowAddField(TestCase):
         data = {'email': 'foobar@example.com', 'content': 'foobar'}
         request = factory.post('/', data, format='json')
         response = self.view(request).render()
-        self.assertEqual(response.status_code, status.HTTP_201_CREATED)
+        assert response.status_code == status.HTTP_201_CREATED
         created = self.objects.get(id=1)
-        self.assertEqual(created.content, 'foobar')
+        assert created.content == 'foobar'
 
 
 # Test for particularly ugly regression with m2m in browsable API
@@ -432,7 +432,7 @@ class TestM2MBrowsableAPI(TestCase):
         request = factory.get('/', HTTP_ACCEPT='text/html')
         view = ExampleView().as_view()
         response = view(request).render()
-        self.assertEqual(response.status_code, status.HTTP_200_OK)
+        assert response.status_code == status.HTTP_200_OK
 
 
 class InclusiveFilterBackend(object):
@@ -489,9 +489,9 @@ class TestFilterBackendAppliedToViews(TestCase):
         root_view = RootView.as_view(filter_backends=(InclusiveFilterBackend,))
         request = factory.get('/')
         response = root_view(request).render()
-        self.assertEqual(response.status_code, status.HTTP_200_OK)
-        self.assertEqual(len(response.data), 1)
-        self.assertEqual(response.data, [{'id': 1, 'text': 'foo'}])
+        assert response.status_code == status.HTTP_200_OK
+        assert len(response.data) == 1
+        assert response.data == [{'id': 1, 'text': 'foo'}]
 
     def test_get_root_view_filters_out_all_models_with_exclusive_filter_backend(self):
         """
@@ -500,8 +500,8 @@ class TestFilterBackendAppliedToViews(TestCase):
         root_view = RootView.as_view(filter_backends=(ExclusiveFilterBackend,))
         request = factory.get('/')
         response = root_view(request).render()
-        self.assertEqual(response.status_code, status.HTTP_200_OK)
-        self.assertEqual(response.data, [])
+        assert response.status_code == status.HTTP_200_OK
+        assert response.data == []
 
     def test_get_instance_view_filters_out_name_with_filter_backend(self):
         """
@@ -510,8 +510,8 @@ class TestFilterBackendAppliedToViews(TestCase):
         instance_view = InstanceView.as_view(filter_backends=(ExclusiveFilterBackend,))
         request = factory.get('/1')
         response = instance_view(request, pk=1).render()
-        self.assertEqual(response.status_code, status.HTTP_404_NOT_FOUND)
-        self.assertEqual(response.data, {'detail': 'Not found.'})
+        assert response.status_code == status.HTTP_404_NOT_FOUND
+        assert response.data == {'detail': 'Not found.'}
 
     def test_get_instance_view_will_return_single_object_when_filter_does_not_exclude_it(self):
         """
@@ -520,8 +520,8 @@ class TestFilterBackendAppliedToViews(TestCase):
         instance_view = InstanceView.as_view(filter_backends=(InclusiveFilterBackend,))
         request = factory.get('/1')
         response = instance_view(request, pk=1).render()
-        self.assertEqual(response.status_code, status.HTTP_200_OK)
-        self.assertEqual(response.data, {'id': 1, 'text': 'foo'})
+        assert response.status_code == status.HTTP_200_OK
+        assert response.data == {'id': 1, 'text': 'foo'}
 
     def test_dynamic_serializer_form_in_browsable_api(self):
         """
@@ -530,8 +530,9 @@ class TestFilterBackendAppliedToViews(TestCase):
         view = DynamicSerializerView.as_view()
         request = factory.get('/')
         response = view(request).render()
-        self.assertContains(response, 'field_b')
-        self.assertNotContains(response, 'field_a')
+        content = response.content.decode('utf8')
+        assert 'field_b' in content
+        assert 'field_a' not in content
 
 
 class TestGuardedQueryset(TestCase):

tests/test_model_serializer.py

@@ -94,7 +94,7 @@ class Issue3674ParentModel(models.Model):
 
 
 class Issue3674ChildModel(models.Model):
-    parent = models.ForeignKey(Issue3674ParentModel, related_name='children')
+    parent = models.ForeignKey(Issue3674ParentModel, related_name='children', on_delete=models.CASCADE)
     value = models.CharField(primary_key=True, max_length=64)
 
 
@@ -1013,7 +1013,7 @@ class Issue3674Test(TestCase):
             title = models.CharField(max_length=64)
 
         class TestChildModel(models.Model):
-            parent = models.ForeignKey(TestParentModel, related_name='children')
+            parent = models.ForeignKey(TestParentModel, related_name='children', on_delete=models.CASCADE)
             value = models.CharField(primary_key=True, max_length=64)
 
         class TestChildModelSerializer(serializers.ModelSerializer):

tests/test_prefetch_related.py

@@ -2,6 +2,7 @@ from django.contrib.auth.models import Group, User
 from django.test import TestCase
 
 from rest_framework import generics, serializers
+from rest_framework.compat import set_many
 from rest_framework.test import APIRequestFactory
 
 factory = APIRequestFactory()
@@ -22,7 +23,7 @@ class TestPrefetchRelatedUpdates(TestCase):
     def setUp(self):
         self.user = User.objects.create(username='tom', email='tom@example.com')
         self.groups = [Group.objects.create(name='a'), Group.objects.create(name='b')]
-        self.user.groups = self.groups
+        set_many(self.user, 'groups', self.groups)
         self.user.save()
 
     def test_prefetch_related_updates(self):

tests/test_relations_generic.py

@@ -75,7 +75,7 @@ class TestGenericRelations(TestCase):
             'tags': ['django', 'python'],
             'url': 'https://www.djangoproject.com/'
         }
-        self.assertEqual(serializer.data, expected)
+        assert serializer.data == expected
 
     def test_generic_fk(self):
         """
@@ -105,4 +105,4 @@ class TestGenericRelations(TestCase):
                 'tagged_item': 'Note: Remember the milk'
             }
         ]
-        self.assertEqual(serializer.data, expected)
+        assert serializer.data == expected

tests/test_relations_pk.py

@@ -84,7 +84,7 @@ class PKManyToManyTests(TestCase):
             {'id': 3, 'name': 'source-3', 'targets': [1, 2, 3]}
         ]
         with self.assertNumQueries(4):
-            self.assertEqual(serializer.data, expected)
+            assert serializer.data == expected
 
     def test_many_to_many_retrieve_prefetch_related(self):
         queryset = ManyToManySource.objects.all().prefetch_related('targets')
@@ -101,15 +101,15 @@ class PKManyToManyTests(TestCase):
             {'id': 3, 'name': 'target-3', 'sources': [3]}
         ]
         with self.assertNumQueries(4):
-            self.assertEqual(serializer.data, expected)
+            assert serializer.data == expected
 
     def test_many_to_many_update(self):
         data = {'id': 1, 'name': 'source-1', 'targets': [1, 2, 3]}
         instance = ManyToManySource.objects.get(pk=1)
         serializer = ManyToManySourceSerializer(instance, data=data)
-        self.assertTrue(serializer.is_valid())
+        assert serializer.is_valid()
         serializer.save()
-        self.assertEqual(serializer.data, data)
+        assert serializer.data == data
 
         # Ensure source 1 is updated, and everything else is as expected
         queryset = ManyToManySource.objects.all()
@@ -119,15 +119,15 @@ class PKManyToManyTests(TestCase):
             {'id': 2, 'name': 'source-2', 'targets': [1, 2]},
             {'id': 3, 'name': 'source-3', 'targets': [1, 2, 3]}
         ]
-        self.assertEqual(serializer.data, expected)
+        assert serializer.data == expected
 
     def test_reverse_many_to_many_update(self):
         data = {'id': 1, 'name': 'target-1', 'sources': [1]}
         instance = ManyToManyTarget.objects.get(pk=1)
         serializer = ManyToManyTargetSerializer(instance, data=data)
-        self.assertTrue(serializer.is_valid())
+        assert serializer.is_valid()
         serializer.save()
-        self.assertEqual(serializer.data, data)
+        assert serializer.data == data
 
         # Ensure target 1 is updated, and everything else is as expected
         queryset = ManyToManyTarget.objects.all()
@@ -137,15 +137,15 @@ class PKManyToManyTests(TestCase):
             {'id': 2, 'name': 'target-2', 'sources': [2, 3]},
             {'id': 3, 'name': 'target-3', 'sources': [3]}
         ]
-        self.assertEqual(serializer.data, expected)
+        assert serializer.data == expected
 
     def test_many_to_many_create(self):
         data = {'id': 4, 'name': 'source-4', 'targets': [1, 3]}
         serializer = ManyToManySourceSerializer(data=data)
-        self.assertTrue(serializer.is_valid())
+        assert serializer.is_valid()
         obj = serializer.save()
-        self.assertEqual(serializer.data, data)
-        self.assertEqual(obj.name, 'source-4')
+        assert serializer.data == data
+        assert obj.name == 'source-4'
 
         # Ensure source 4 is added, and everything else is as expected
         queryset = ManyToManySource.objects.all()
@@ -156,7 +156,7 @@ class PKManyToManyTests(TestCase):
             {'id': 3, 'name': 'source-3', 'targets': [1, 2, 3]},
             {'id': 4, 'name': 'source-4', 'targets': [1, 3]},
         ]
-        self.assertEqual(serializer.data, expected)
+        assert serializer.data == expected
 
     def test_many_to_many_unsaved(self):
         source = ManyToManySource(name='source-unsaved')
@@ -166,15 +166,15 @@ class PKManyToManyTests(TestCase):
         expected = {'id': None, 'name': 'source-unsaved', 'targets': []}
         # no query if source hasn't been created yet
         with self.assertNumQueries(0):
-            self.assertEqual(serializer.data, expected)
+            assert serializer.data == expected
 
     def test_reverse_many_to_many_create(self):
         data = {'id': 4, 'name': 'target-4', 'sources': [1, 3]}
         serializer = ManyToManyTargetSerializer(data=data)
-        self.assertTrue(serializer.is_valid())
+        assert serializer.is_valid()
         obj = serializer.save()
-        self.assertEqual(serializer.data, data)
-        self.assertEqual(obj.name, 'target-4')
+        assert serializer.data == data
+        assert obj.name == 'target-4'
 
         # Ensure target 4 is added, and everything else is as expected
         queryset = ManyToManyTarget.objects.all()
@@ -185,7 +185,7 @@ class PKManyToManyTests(TestCase):
             {'id': 3, 'name': 'target-3', 'sources': [3]},
             {'id': 4, 'name': 'target-4', 'sources': [1, 3]}
         ]
-        self.assertEqual(serializer.data, expected)
+        assert serializer.data == expected
 
 
 class PKForeignKeyTests(TestCase):
@@ -207,7 +207,7 @@ class PKForeignKeyTests(TestCase):
             {'id': 3, 'name': 'source-3', 'target': 1}
         ]
         with self.assertNumQueries(1):
-            self.assertEqual(serializer.data, expected)
+            assert serializer.data == expected
 
     def test_reverse_foreign_key_retrieve(self):
         queryset = ForeignKeyTarget.objects.all()
@@ -217,7 +217,7 @@ class PKForeignKeyTests(TestCase):
             {'id': 2, 'name': 'target-2', 'sources': []},
         ]
         with self.assertNumQueries(3):
-            self.assertEqual(serializer.data, expected)
+            assert serializer.data == expected
 
     def test_reverse_foreign_key_retrieve_prefetch_related(self):
         queryset = ForeignKeyTarget.objects.all().prefetch_related('sources')
@@ -229,9 +229,9 @@ class PKForeignKeyTests(TestCase):
         data = {'id': 1, 'name': 'source-1', 'target': 2}
         instance = ForeignKeySource.objects.get(pk=1)
         serializer = ForeignKeySourceSerializer(instance, data=data)
-        self.assertTrue(serializer.is_valid())
+        assert serializer.is_valid()
         serializer.save()
-        self.assertEqual(serializer.data, data)
+        assert serializer.data == data
 
         # Ensure source 1 is updated, and everything else is as expected
         queryset = ForeignKeySource.objects.all()
@@ -241,20 +241,20 @@ class PKForeignKeyTests(TestCase):
             {'id': 2, 'name': 'source-2', 'target': 1},
             {'id': 3, 'name': 'source-3', 'target': 1}
         ]
-        self.assertEqual(serializer.data, expected)
+        assert serializer.data == expected
 
     def test_foreign_key_update_incorrect_type(self):
         data = {'id': 1, 'name': 'source-1', 'target': 'foo'}
         instance = ForeignKeySource.objects.get(pk=1)
         serializer = ForeignKeySourceSerializer(instance, data=data)
-        self.assertFalse(serializer.is_valid())
-        self.assertEqual(serializer.errors, {'target': ['Incorrect type. Expected pk value, received %s.' % six.text_type.__name__]})
+        assert not serializer.is_valid()
+        assert serializer.errors == {'target': ['Incorrect type. Expected pk value, received %s.' % six.text_type.__name__]}
 
     def test_reverse_foreign_key_update(self):
         data = {'id': 2, 'name': 'target-2', 'sources': [1, 3]}
         instance = ForeignKeyTarget.objects.get(pk=2)
         serializer = ForeignKeyTargetSerializer(instance, data=data)
-        self.assertTrue(serializer.is_valid())
+        assert serializer.is_valid()
         # We shouldn't have saved anything to the db yet since save
         # hasn't been called.
         queryset = ForeignKeyTarget.objects.all()
@@ -263,10 +263,10 @@ class PKForeignKeyTests(TestCase):
             {'id': 1, 'name': 'target-1', 'sources': [1, 2, 3]},
             {'id': 2, 'name': 'target-2', 'sources': []},
         ]
-        self.assertEqual(new_serializer.data, expected)
+        assert new_serializer.data == expected
 
         serializer.save()
-        self.assertEqual(serializer.data, data)
+        assert serializer.data == data
 
         # Ensure target 2 is update, and everything else is as expected
         queryset = ForeignKeyTarget.objects.all()
@@ -275,15 +275,15 @@ class PKForeignKeyTests(TestCase):
             {'id': 1, 'name': 'target-1', 'sources': [2]},
             {'id': 2, 'name': 'target-2', 'sources': [1, 3]},
         ]
-        self.assertEqual(serializer.data, expected)
+        assert serializer.data == expected
 
     def test_foreign_key_create(self):
         data = {'id': 4, 'name': 'source-4', 'target': 2}
         serializer = ForeignKeySourceSerializer(data=data)
-        self.assertTrue(serializer.is_valid())
+        assert serializer.is_valid()
         obj = serializer.save()
-        self.assertEqual(serializer.data, data)
-        self.assertEqual(obj.name, 'source-4')
+        assert serializer.data == data
+        assert obj.name == 'source-4'
 
         # Ensure source 4 is added, and everything else is as expected
         queryset = ForeignKeySource.objects.all()
@@ -294,15 +294,15 @@ class PKForeignKeyTests(TestCase):
             {'id': 3, 'name': 'source-3', 'target': 1},
             {'id': 4, 'name': 'source-4', 'target': 2},
         ]
-        self.assertEqual(serializer.data, expected)
+        assert serializer.data == expected
 
     def test_reverse_foreign_key_create(self):
         data = {'id': 3, 'name': 'target-3', 'sources': [1, 3]}
         serializer = ForeignKeyTargetSerializer(data=data)
-        self.assertTrue(serializer.is_valid())
+        assert serializer.is_valid()
         obj = serializer.save()
-        self.assertEqual(serializer.data, data)
-        self.assertEqual(obj.name, 'target-3')
+        assert serializer.data == data
+        assert obj.name == 'target-3'
 
         # Ensure target 3 is added, and everything else is as expected
         queryset = ForeignKeyTarget.objects.all()
@@ -312,14 +312,14 @@ class PKForeignKeyTests(TestCase):
             {'id': 2, 'name': 'target-2', 'sources': []},
             {'id': 3, 'name': 'target-3', 'sources': [1, 3]},
         ]
-        self.assertEqual(serializer.data, expected)
+        assert serializer.data == expected
 
     def test_foreign_key_update_with_invalid_null(self):
         data = {'id': 1, 'name': 'source-1', 'target': None}
         instance = ForeignKeySource.objects.get(pk=1)
         serializer = ForeignKeySourceSerializer(instance, data=data)
-        self.assertFalse(serializer.is_valid())
-        self.assertEqual(serializer.errors, {'target': ['This field may not be null.']})
+        assert not serializer.is_valid()
+        assert serializer.errors == {'target': ['This field may not be null.']}
 
     def test_foreign_key_with_unsaved(self):
         source = ForeignKeySource(name='source-unsaved')
@@ -329,7 +329,7 @@ class PKForeignKeyTests(TestCase):
 
         # no query if source hasn't been created yet
         with self.assertNumQueries(0):
-            self.assertEqual(serializer.data, expected)
+            assert serializer.data == expected
 
     def test_foreign_key_with_empty(self):
         """
@@ -338,7 +338,7 @@ class PKForeignKeyTests(TestCase):
         https://github.com/tomchristie/django-rest-framework/issues/1072
         """
         serializer = NullableForeignKeySourceSerializer()
-        self.assertEqual(serializer.data['target'], None)
+        assert serializer.data['target'] is None
 
     def test_foreign_key_not_required(self):
         """
@@ -350,7 +350,7 @@ class PKForeignKeyTests(TestCase):
                 extra_kwargs = {'target': {'required': False}}
         serializer = ModelSerializer(data={'name': 'test'})
         serializer.is_valid(raise_exception=True)
-        self.assertNotIn('target', serializer.validated_data)
+        assert 'target' not in serializer.validated_data
 
 
 class PKNullableForeignKeyTests(TestCase):
@@ -371,15 +371,15 @@ class PKNullableForeignKeyTests(TestCase):
             {'id': 2, 'name': 'source-2', 'target': 1},
             {'id': 3, 'name': 'source-3', 'target': None},
         ]
-        self.assertEqual(serializer.data, expected)
+        assert serializer.data == expected
 
     def test_foreign_key_create_with_valid_null(self):
         data = {'id': 4, 'name': 'source-4', 'target': None}
         serializer = NullableForeignKeySourceSerializer(data=data)
-        self.assertTrue(serializer.is_valid())
+        assert serializer.is_valid()
         obj = serializer.save()
-        self.assertEqual(serializer.data, data)
-        self.assertEqual(obj.name, 'source-4')
+        assert serializer.data == data
+        assert obj.name == 'source-4'
 
         # Ensure source 4 is created, and everything else is as expected
         queryset = NullableForeignKeySource.objects.all()
@@ -390,7 +390,7 @@ class PKNullableForeignKeyTests(TestCase):
             {'id': 3, 'name': 'source-3', 'target': None},
             {'id': 4, 'name': 'source-4', 'target': None}
         ]
-        self.assertEqual(serializer.data, expected)
+        assert serializer.data == expected
 
     def test_foreign_key_create_with_valid_emptystring(self):
         """
@@ -400,10 +400,10 @@ class PKNullableForeignKeyTests(TestCase):
         data = {'id': 4, 'name': 'source-4', 'target': ''}
         expected_data = {'id': 4, 'name': 'source-4', 'target': None}
         serializer = NullableForeignKeySourceSerializer(data=data)
-        self.assertTrue(serializer.is_valid())
+        assert serializer.is_valid()
         obj = serializer.save()
-        self.assertEqual(serializer.data, expected_data)
-        self.assertEqual(obj.name, 'source-4')
+        assert serializer.data == expected_data
+        assert obj.name == 'source-4'
 
         # Ensure source 4 is created, and everything else is as expected
         queryset = NullableForeignKeySource.objects.all()
@@ -414,15 +414,15 @@ class PKNullableForeignKeyTests(TestCase):
             {'id': 3, 'name': 'source-3', 'target': None},
             {'id': 4, 'name': 'source-4', 'target': None}
         ]
-        self.assertEqual(serializer.data, expected)
+        assert serializer.data == expected
 
     def test_foreign_key_update_with_valid_null(self):
         data = {'id': 1, 'name': 'source-1', 'target': None}
         instance = NullableForeignKeySource.objects.get(pk=1)
         serializer = NullableForeignKeySourceSerializer(instance, data=data)
-        self.assertTrue(serializer.is_valid())
+        assert serializer.is_valid()
         serializer.save()
-        self.assertEqual(serializer.data, data)
+        assert serializer.data == data
 
         # Ensure source 1 is updated, and everything else is as expected
         queryset = NullableForeignKeySource.objects.all()
@@ -432,7 +432,7 @@ class PKNullableForeignKeyTests(TestCase):
             {'id': 2, 'name': 'source-2', 'target': 1},
             {'id': 3, 'name': 'source-3', 'target': None}
         ]
-        self.assertEqual(serializer.data, expected)
+        assert serializer.data == expected
 
     def test_foreign_key_update_with_valid_emptystring(self):
         """
@@ -443,9 +443,9 @@ class PKNullableForeignKeyTests(TestCase):
         expected_data = {'id': 1, 'name': 'source-1', 'target': None}
         instance = NullableForeignKeySource.objects.get(pk=1)
         serializer = NullableForeignKeySourceSerializer(instance, data=data)
-        self.assertTrue(serializer.is_valid())
+        assert serializer.is_valid()
         serializer.save()
-        self.assertEqual(serializer.data, expected_data)
+        assert serializer.data == expected_data
 
         # Ensure source 1 is updated, and everything else is as expected
         queryset = NullableForeignKeySource.objects.all()
@@ -455,18 +455,18 @@ class PKNullableForeignKeyTests(TestCase):
             {'id': 2, 'name': 'source-2', 'target': 1},
             {'id': 3, 'name': 'source-3', 'target': None}
         ]
-        self.assertEqual(serializer.data, expected)
+        assert serializer.data == expected
 
     def test_null_uuid_foreign_key_serializes_as_none(self):
         source = NullableUUIDForeignKeySource(name='Source')
         serializer = NullableUUIDForeignKeySourceSerializer(source)
         data = serializer.data
-        self.assertEqual(data["target"], None)
+        assert data["target"] is None
 
     def test_nullable_uuid_foreign_key_is_valid_when_none(self):
         data = {"name": "Source", "target": None}
         serializer = NullableUUIDForeignKeySourceSerializer(data=data)
-        self.assertTrue(serializer.is_valid(), serializer.errors)
+        assert serializer.is_valid(), serializer.errors
 
 
 class PKNullableOneToOneTests(TestCase):
@@ -485,4 +485,4 @@ class PKNullableOneToOneTests(TestCase):
             {'id': 1, 'name': 'target-1', 'nullable_source': None},
             {'id': 2, 'name': 'target-2', 'nullable_source': 1},
         ]
-        self.assertEqual(serializer.data, expected)
+        assert serializer.data == expected

tests/test_validation.py

@@ -60,11 +60,11 @@ class TestNestedValidationError(TestCase):
             }
         })
 
-        self.assertEqual(serializers.as_serializer_error(e), {
+        assert serializers.as_serializer_error(e) == {
             'nested': {
                 'field': ['error'],
             }
-        })
+        }
 
 
 class TestPreSaveValidationExclusionsSerializer(TestCase):
@@ -75,20 +75,20 @@ class TestPreSaveValidationExclusionsSerializer(TestCase):
         # We've set `required=False` on the serializer, but the model
         # does not have `blank=True`, so this serializer should not validate.
         serializer = ShouldValidateModelSerializer(data={'renamed': ''})
-        self.assertEqual(serializer.is_valid(), False)
-        self.assertIn('renamed', serializer.errors)
-        self.assertNotIn('should_validate_field', serializer.errors)
+        assert serializer.is_valid() is False
+        assert 'renamed' in serializer.errors
+        assert 'should_validate_field' not in serializer.errors
 
 
 class TestCustomValidationMethods(TestCase):
     def test_custom_validation_method_is_executed(self):
         serializer = ShouldValidateModelSerializer(data={'renamed': 'fo'})
-        self.assertFalse(serializer.is_valid())
-        self.assertIn('renamed', serializer.errors)
+        assert not serializer.is_valid()
+        assert 'renamed' in serializer.errors
 
     def test_custom_validation_method_passing(self):
         serializer = ShouldValidateModelSerializer(data={'renamed': 'foo'})
-        self.assertTrue(serializer.is_valid())
+        assert serializer.is_valid()
 
 
 class ValidationSerializer(serializers.Serializer):
@@ -108,12 +108,12 @@ class TestAvoidValidation(TestCase):
     """
     def test_serializer_errors_has_only_invalid_data_error(self):
         serializer = ValidationSerializer(data='invalid data')
-        self.assertFalse(serializer.is_valid())
-        self.assertDictEqual(serializer.errors, {
+        assert not serializer.is_valid()
+        assert serializer.errors == {
             'non_field_errors': [
                 'Invalid data. Expected a dictionary, but got %s.' % type('').__name__
             ]
-        })
+        }
 
 
 # regression tests for issue: 1493
@@ -137,27 +137,31 @@ class TestMaxValueValidatorValidation(TestCase):
 
     def test_max_value_validation_serializer_success(self):
         serializer = ValidationMaxValueValidatorModelSerializer(data={'number_value': 99})
-        self.assertTrue(serializer.is_valid())
+        assert serializer.is_valid()
 
     def test_max_value_validation_serializer_fails(self):
         serializer = ValidationMaxValueValidatorModelSerializer(data={'number_value': 101})
-        self.assertFalse(serializer.is_valid())
-        self.assertDictEqual({'number_value': ['Ensure this value is less than or equal to 100.']}, serializer.errors)
+        assert not serializer.is_valid()
+        assert serializer.errors == {
+            'number_value': [
+                'Ensure this value is less than or equal to 100.'
+            ]
+        }
 
     def test_max_value_validation_success(self):
         obj = ValidationMaxValueValidatorModel.objects.create(number_value=100)
         request = factory.patch('/{0}'.format(obj.pk), {'number_value': 98}, format='json')
         view = UpdateMaxValueValidationModel().as_view()
         response = view(request, pk=obj.pk).render()
-        self.assertEqual(response.status_code, status.HTTP_200_OK)
+        assert response.status_code == status.HTTP_200_OK
 
     def test_max_value_validation_fail(self):
         obj = ValidationMaxValueValidatorModel.objects.create(number_value=100)
         request = factory.patch('/{0}'.format(obj.pk), {'number_value': 101}, format='json')
         view = UpdateMaxValueValidationModel().as_view()
         response = view(request, pk=obj.pk).render()
-        self.assertEqual(response.content, b'{"number_value":["Ensure this value is less than or equal to 100."]}')
-        self.assertEqual(response.status_code, status.HTTP_400_BAD_REQUEST)
+        assert response.content == b'{"number_value":["Ensure this value is less than or equal to 100."]}'
+        assert response.status_code == status.HTTP_400_BAD_REQUEST
 
 
 # regression tests for issue: 1533

tests/test_validation_error.py

@@ -54,16 +54,16 @@ class TestValidationErrorWithFullDetails(TestCase):
 
         request = factory.get('/', content_type='application/json')
         response = view(request)
-        self.assertEqual(response.status_code, status.HTTP_400_BAD_REQUEST)
-        self.assertEqual(response.data, self.expected_response_data)
+        assert response.status_code == status.HTTP_400_BAD_REQUEST
+        assert response.data == self.expected_response_data
 
     def test_function_based_view_exception_handler(self):
         view = error_view
 
         request = factory.get('/', content_type='application/json')
         response = view(request)
-        self.assertEqual(response.status_code, status.HTTP_400_BAD_REQUEST)
-        self.assertEqual(response.data, self.expected_response_data)
+        assert response.status_code == status.HTTP_400_BAD_REQUEST
+        assert response.data == self.expected_response_data
 
 
 class TestValidationErrorWithCodes(TestCase):
@@ -89,13 +89,13 @@ class TestValidationErrorWithCodes(TestCase):
 
         request = factory.get('/', content_type='application/json')
         response = view(request)
-        self.assertEqual(response.status_code, status.HTTP_400_BAD_REQUEST)
-        self.assertEqual(response.data, self.expected_response_data)
+        assert response.status_code == status.HTTP_400_BAD_REQUEST
+        assert response.data == self.expected_response_data
 
     def test_function_based_view_exception_handler(self):
         view = error_view
 
         request = factory.get('/', content_type='application/json')
         response = view(request)
-        self.assertEqual(response.status_code, status.HTTP_400_BAD_REQUEST)
-        self.assertEqual(response.data, self.expected_response_data)
+        assert response.status_code == status.HTTP_400_BAD_REQUEST
+        assert response.data == self.expected_response_data