Refs #33476 -- Reformatted code with Black.

3 files changed, 188 insertions, 156 deletions

diff --git a/tests/responses/test_cookie.py b/tests/responses/test_cookie.py
index 96dd603aac..b37c6fb7b6 100644
--- a/tests/responses/test_cookie.py
+++ b/tests/responses/test_cookie.py
@@ -10,7 +10,6 @@ from django.utils.timezone import utc
 
 
 class SetCookieTests(SimpleTestCase):
-
     def test_near_expiration(self):
         """Cookie will expire when a near expiration time is provided."""
         response = HttpResponse()
@@ -21,38 +20,40 @@ class SetCookieTests(SimpleTestCase):
         # larger. The sleep guarantees that there will be a time difference.
         expires = datetime.now(tz=utc).replace(tzinfo=None) + timedelta(seconds=10)
         time.sleep(0.001)
-        response.set_cookie('datetime', expires=expires)
-        datetime_cookie = response.cookies['datetime']
-        self.assertEqual(datetime_cookie['max-age'], 10)
+        response.set_cookie("datetime", expires=expires)
+        datetime_cookie = response.cookies["datetime"]
+        self.assertEqual(datetime_cookie["max-age"], 10)
 
     def test_aware_expiration(self):
         """set_cookie() accepts an aware datetime as expiration time."""
         response = HttpResponse()
         expires = datetime.now(tz=utc) + timedelta(seconds=10)
         time.sleep(0.001)
-        response.set_cookie('datetime', expires=expires)
-        datetime_cookie = response.cookies['datetime']
-        self.assertEqual(datetime_cookie['max-age'], 10)
+        response.set_cookie("datetime", expires=expires)
+        datetime_cookie = response.cookies["datetime"]
+        self.assertEqual(datetime_cookie["max-age"], 10)
 
     def test_create_cookie_after_deleting_cookie(self):
         """Setting a cookie after deletion clears the expiry date."""
         response = HttpResponse()
-        response.set_cookie('c', 'old-value')
-        self.assertEqual(response.cookies['c']['expires'], '')
-        response.delete_cookie('c')
-        self.assertEqual(response.cookies['c']['expires'], 'Thu, 01 Jan 1970 00:00:00 GMT')
-        response.set_cookie('c', 'new-value')
-        self.assertEqual(response.cookies['c']['expires'], '')
+        response.set_cookie("c", "old-value")
+        self.assertEqual(response.cookies["c"]["expires"], "")
+        response.delete_cookie("c")
+        self.assertEqual(
+            response.cookies["c"]["expires"], "Thu, 01 Jan 1970 00:00:00 GMT"
+        )
+        response.set_cookie("c", "new-value")
+        self.assertEqual(response.cookies["c"]["expires"], "")
 
     def test_far_expiration(self):
         """Cookie will expire when a distant expiration time is provided."""
         response = HttpResponse()
-        response.set_cookie('datetime', expires=datetime(2038, 1, 1, 4, 5, 6))
-        datetime_cookie = response.cookies['datetime']
+        response.set_cookie("datetime", expires=datetime(2038, 1, 1, 4, 5, 6))
+        datetime_cookie = response.cookies["datetime"]
         self.assertIn(
-            datetime_cookie['expires'],
+            datetime_cookie["expires"],
             # assertIn accounts for slight time dependency (#23450)
-            ('Fri, 01 Jan 2038 04:05:06 GMT', 'Fri, 01 Jan 2038 04:05:07 GMT')
+            ("Fri, 01 Jan 2038 04:05:06 GMT", "Fri, 01 Jan 2038 04:05:07 GMT"),
         )
 
     def test_max_age_expiration(self):
@@ -60,57 +61,58 @@ class SetCookieTests(SimpleTestCase):
         response = HttpResponse()
         set_cookie_time = time.time()
         with freeze_time(set_cookie_time):
-            response.set_cookie('max_age', max_age=10)
-        max_age_cookie = response.cookies['max_age']
-        self.assertEqual(max_age_cookie['max-age'], 10)
-        self.assertEqual(max_age_cookie['expires'], http_date(set_cookie_time + 10))
+            response.set_cookie("max_age", max_age=10)
+        max_age_cookie = response.cookies["max_age"]
+        self.assertEqual(max_age_cookie["max-age"], 10)
+        self.assertEqual(max_age_cookie["expires"], http_date(set_cookie_time + 10))
 
     def test_max_age_int(self):
         response = HttpResponse()
-        response.set_cookie('max_age', max_age=10.6)
-        self.assertEqual(response.cookies['max_age']['max-age'], 10)
+        response.set_cookie("max_age", max_age=10.6)
+        self.assertEqual(response.cookies["max_age"]["max-age"], 10)
 
     def test_httponly_cookie(self):
         response = HttpResponse()
-        response.set_cookie('example', httponly=True)
-        example_cookie = response.cookies['example']
-        self.assertIn('; %s' % cookies.Morsel._reserved['httponly'], str(example_cookie))
-        self.assertIs(example_cookie['httponly'], True)
+        response.set_cookie("example", httponly=True)
+        example_cookie = response.cookies["example"]
+        self.assertIn(
+            "; %s" % cookies.Morsel._reserved["httponly"], str(example_cookie)
+        )
+        self.assertIs(example_cookie["httponly"], True)
 
     def test_unicode_cookie(self):
         """HttpResponse.set_cookie() works with Unicode data."""
         response = HttpResponse()
-        cookie_value = '清風'
-        response.set_cookie('test', cookie_value)
-        self.assertEqual(response.cookies['test'].value, cookie_value)
+        cookie_value = "清風"
+        response.set_cookie("test", cookie_value)
+        self.assertEqual(response.cookies["test"].value, cookie_value)
 
     def test_samesite(self):
         response = HttpResponse()
-        response.set_cookie('example', samesite='None')
-        self.assertEqual(response.cookies['example']['samesite'], 'None')
-        response.set_cookie('example', samesite='Lax')
-        self.assertEqual(response.cookies['example']['samesite'], 'Lax')
-        response.set_cookie('example', samesite='strict')
-        self.assertEqual(response.cookies['example']['samesite'], 'strict')
+        response.set_cookie("example", samesite="None")
+        self.assertEqual(response.cookies["example"]["samesite"], "None")
+        response.set_cookie("example", samesite="Lax")
+        self.assertEqual(response.cookies["example"]["samesite"], "Lax")
+        response.set_cookie("example", samesite="strict")
+        self.assertEqual(response.cookies["example"]["samesite"], "strict")
 
     def test_invalid_samesite(self):
         msg = 'samesite must be "lax", "none", or "strict".'
         with self.assertRaisesMessage(ValueError, msg):
-            HttpResponse().set_cookie('example', samesite='invalid')
+            HttpResponse().set_cookie("example", samesite="invalid")
 
 
 class DeleteCookieTests(SimpleTestCase):
-
     def test_default(self):
         response = HttpResponse()
-        response.delete_cookie('c')
-        cookie = response.cookies['c']
-        self.assertEqual(cookie['expires'], 'Thu, 01 Jan 1970 00:00:00 GMT')
-        self.assertEqual(cookie['max-age'], 0)
-        self.assertEqual(cookie['path'], '/')
-        self.assertEqual(cookie['secure'], '')
-        self.assertEqual(cookie['domain'], '')
-        self.assertEqual(cookie['samesite'], '')
+        response.delete_cookie("c")
+        cookie = response.cookies["c"]
+        self.assertEqual(cookie["expires"], "Thu, 01 Jan 1970 00:00:00 GMT")
+        self.assertEqual(cookie["max-age"], 0)
+        self.assertEqual(cookie["path"], "/")
+        self.assertEqual(cookie["secure"], "")
+        self.assertEqual(cookie["domain"], "")
+        self.assertEqual(cookie["samesite"], "")
 
     def test_delete_cookie_secure_prefix(self):
         """
@@ -119,19 +121,19 @@ class DeleteCookieTests(SimpleTestCase):
         prefixes).
         """
         response = HttpResponse()
-        for prefix in ('Secure', 'Host'):
+        for prefix in ("Secure", "Host"):
             with self.subTest(prefix=prefix):
-                cookie_name = '__%s-c' % prefix
+                cookie_name = "__%s-c" % prefix
                 response.delete_cookie(cookie_name)
-                self.assertIs(response.cookies[cookie_name]['secure'], True)
+                self.assertIs(response.cookies[cookie_name]["secure"], True)
 
     def test_delete_cookie_secure_samesite_none(self):
         # delete_cookie() sets the secure flag if samesite='none'.
         response = HttpResponse()
-        response.delete_cookie('c', samesite='none')
-        self.assertIs(response.cookies['c']['secure'], True)
+        response.delete_cookie("c", samesite="none")
+        self.assertIs(response.cookies["c"]["secure"], True)
 
     def test_delete_cookie_samesite(self):
         response = HttpResponse()
-        response.delete_cookie('c', samesite='lax')
-        self.assertEqual(response.cookies['c']['samesite'], 'lax')
+        response.delete_cookie("c", samesite="lax")
+        self.assertEqual(response.cookies["c"]["samesite"], "lax")
diff --git a/tests/responses/test_fileresponse.py b/tests/responses/test_fileresponse.py
index 4e10105ce5..ebb7876be2 100644
--- a/tests/responses/test_fileresponse.py
+++ b/tests/responses/test_fileresponse.py
@@ -17,32 +17,36 @@ class UnseekableBytesIO(io.BytesIO):
 
 class FileResponseTests(SimpleTestCase):
     def test_content_length_file(self):
-        response = FileResponse(open(__file__, 'rb'))
+        response = FileResponse(open(__file__, "rb"))
         response.close()
-        self.assertEqual(response.headers['Content-Length'], str(os.path.getsize(__file__)))
+        self.assertEqual(
+            response.headers["Content-Length"], str(os.path.getsize(__file__))
+        )
 
     def test_content_length_buffer(self):
-        response = FileResponse(io.BytesIO(b'binary content'))
-        self.assertEqual(response.headers['Content-Length'], '14')
+        response = FileResponse(io.BytesIO(b"binary content"))
+        self.assertEqual(response.headers["Content-Length"], "14")
 
     def test_content_length_nonzero_starting_position_file(self):
-        file = open(__file__, 'rb')
+        file = open(__file__, "rb")
         file.seek(10)
         response = FileResponse(file)
         response.close()
-        self.assertEqual(response.headers['Content-Length'], str(os.path.getsize(__file__) - 10))
+        self.assertEqual(
+            response.headers["Content-Length"], str(os.path.getsize(__file__) - 10)
+        )
 
     def test_content_length_nonzero_starting_position_buffer(self):
         test_tuples = (
-            ('BytesIO', io.BytesIO),
-            ('UnseekableBytesIO', UnseekableBytesIO),
+            ("BytesIO", io.BytesIO),
+            ("UnseekableBytesIO", UnseekableBytesIO),
         )
         for buffer_class_name, BufferClass in test_tuples:
             with self.subTest(buffer_class_name=buffer_class_name):
-                buffer = BufferClass(b'binary content')
+                buffer = BufferClass(b"binary content")
                 buffer.seek(10)
                 response = FileResponse(buffer)
-                self.assertEqual(response.headers['Content-Length'], '4')
+                self.assertEqual(response.headers["Content-Length"], "4")
 
     def test_content_length_nonzero_starting_position_file_seekable_no_tell(self):
         class TestFile:
@@ -73,125 +77,136 @@ class FileResponseTests(SimpleTestCase):
             def __exit__(self, e_type, e_val, e_tb):
                 self.close()
 
-        file = TestFile(__file__, 'rb')
+        file = TestFile(__file__, "rb")
         file.seek(10)
         response = FileResponse(file)
         response.close()
-        self.assertEqual(response.headers['Content-Length'], str(os.path.getsize(__file__) - 10))
+        self.assertEqual(
+            response.headers["Content-Length"], str(os.path.getsize(__file__) - 10)
+        )
 
     def test_content_type_file(self):
-        response = FileResponse(open(__file__, 'rb'))
+        response = FileResponse(open(__file__, "rb"))
         response.close()
-        self.assertIn(response.headers['Content-Type'], ['text/x-python', 'text/plain'])
+        self.assertIn(response.headers["Content-Type"], ["text/x-python", "text/plain"])
 
     def test_content_type_buffer(self):
-        response = FileResponse(io.BytesIO(b'binary content'))
-        self.assertEqual(response.headers['Content-Type'], 'application/octet-stream')
+        response = FileResponse(io.BytesIO(b"binary content"))
+        self.assertEqual(response.headers["Content-Type"], "application/octet-stream")
 
     def test_content_type_buffer_explicit(self):
-        response = FileResponse(io.BytesIO(b'binary content'), content_type='video/webm')
-        self.assertEqual(response.headers['Content-Type'], 'video/webm')
+        response = FileResponse(
+            io.BytesIO(b"binary content"), content_type="video/webm"
+        )
+        self.assertEqual(response.headers["Content-Type"], "video/webm")
 
     def test_content_type_buffer_explicit_default(self):
-        response = FileResponse(io.BytesIO(b'binary content'), content_type='text/html')
-        self.assertEqual(response.headers['Content-Type'], 'text/html')
+        response = FileResponse(io.BytesIO(b"binary content"), content_type="text/html")
+        self.assertEqual(response.headers["Content-Type"], "text/html")
 
     def test_content_type_buffer_named(self):
         test_tuples = (
-            (__file__, ['text/x-python', 'text/plain']),
-            (__file__ + 'nosuchfile', ['application/octet-stream']),
-            ('test_fileresponse.py', ['text/x-python', 'text/plain']),
-            ('test_fileresponse.pynosuchfile', ['application/octet-stream']),
+            (__file__, ["text/x-python", "text/plain"]),
+            (__file__ + "nosuchfile", ["application/octet-stream"]),
+            ("test_fileresponse.py", ["text/x-python", "text/plain"]),
+            ("test_fileresponse.pynosuchfile", ["application/octet-stream"]),
         )
         for filename, content_types in test_tuples:
             with self.subTest(filename=filename):
-                buffer = io.BytesIO(b'binary content')
+                buffer = io.BytesIO(b"binary content")
                 buffer.name = filename
                 response = FileResponse(buffer)
-                self.assertIn(response.headers['Content-Type'], content_types)
+                self.assertIn(response.headers["Content-Type"], content_types)
 
     def test_content_disposition_file(self):
         filenames = (
-            ('', 'test_fileresponse.py'),
-            ('custom_name.py', 'custom_name.py'),
+            ("", "test_fileresponse.py"),
+            ("custom_name.py", "custom_name.py"),
         )
         dispositions = (
-            (False, 'inline'),
-            (True, 'attachment'),
+            (False, "inline"),
+            (True, "attachment"),
         )
-        for (filename, header_filename), (as_attachment, header_disposition) in itertools.product(
-            filenames, dispositions
-        ):
+        for (filename, header_filename), (
+            as_attachment,
+            header_disposition,
+        ) in itertools.product(filenames, dispositions):
             with self.subTest(filename=filename, disposition=header_disposition):
-                response = FileResponse(open(__file__, 'rb'), filename=filename, as_attachment=as_attachment)
+                response = FileResponse(
+                    open(__file__, "rb"), filename=filename, as_attachment=as_attachment
+                )
                 response.close()
                 self.assertEqual(
-                    response.headers['Content-Disposition'],
+                    response.headers["Content-Disposition"],
                     '%s; filename="%s"' % (header_disposition, header_filename),
                 )
 
     def test_content_disposition_buffer(self):
-        response = FileResponse(io.BytesIO(b'binary content'))
-        self.assertFalse(response.has_header('Content-Disposition'))
+        response = FileResponse(io.BytesIO(b"binary content"))
+        self.assertFalse(response.has_header("Content-Disposition"))
 
     def test_content_disposition_buffer_attachment(self):
-        response = FileResponse(io.BytesIO(b'binary content'), as_attachment=True)
-        self.assertEqual(response.headers['Content-Disposition'], 'attachment')
+        response = FileResponse(io.BytesIO(b"binary content"), as_attachment=True)
+        self.assertEqual(response.headers["Content-Disposition"], "attachment")
 
     def test_content_disposition_buffer_explicit_filename(self):
         dispositions = (
-            (False, 'inline'),
-            (True, 'attachment'),
+            (False, "inline"),
+            (True, "attachment"),
         )
         for as_attachment, header_disposition in dispositions:
             response = FileResponse(
-                io.BytesIO(b'binary content'),
+                io.BytesIO(b"binary content"),
                 as_attachment=as_attachment,
-                filename='custom_name.py',
+                filename="custom_name.py",
             )
             self.assertEqual(
-                response.headers['Content-Disposition'], '%s; filename="custom_name.py"' % header_disposition,
+                response.headers["Content-Disposition"],
+                '%s; filename="custom_name.py"' % header_disposition,
             )
 
     def test_response_buffer(self):
-        response = FileResponse(io.BytesIO(b'binary content'))
-        self.assertEqual(list(response), [b'binary content'])
+        response = FileResponse(io.BytesIO(b"binary content"))
+        self.assertEqual(list(response), [b"binary content"])
 
     def test_response_nonzero_starting_position(self):
         test_tuples = (
-            ('BytesIO', io.BytesIO),
-            ('UnseekableBytesIO', UnseekableBytesIO),
+            ("BytesIO", io.BytesIO),
+            ("UnseekableBytesIO", UnseekableBytesIO),
         )
         for buffer_class_name, BufferClass in test_tuples:
             with self.subTest(buffer_class_name=buffer_class_name):
-                buffer = BufferClass(b'binary content')
+                buffer = BufferClass(b"binary content")
                 buffer.seek(10)
                 response = FileResponse(buffer)
-                self.assertEqual(list(response), [b'tent'])
+                self.assertEqual(list(response), [b"tent"])
 
     def test_buffer_explicit_absolute_filename(self):
         """
         Headers are set correctly with a buffer when an absolute filename is
         provided.
         """
-        response = FileResponse(io.BytesIO(b'binary content'), filename=__file__)
-        self.assertEqual(response.headers['Content-Length'], '14')
-        self.assertEqual(response.headers['Content-Disposition'], 'inline; filename="test_fileresponse.py"')
+        response = FileResponse(io.BytesIO(b"binary content"), filename=__file__)
+        self.assertEqual(response.headers["Content-Length"], "14")
+        self.assertEqual(
+            response.headers["Content-Disposition"],
+            'inline; filename="test_fileresponse.py"',
+        )
 
-    @skipIf(sys.platform == 'win32', "Named pipes are Unix-only.")
+    @skipIf(sys.platform == "win32", "Named pipes are Unix-only.")
     def test_file_from_named_pipe_response(self):
         with tempfile.TemporaryDirectory() as temp_dir:
-            pipe_file = os.path.join(temp_dir, 'named_pipe')
+            pipe_file = os.path.join(temp_dir, "named_pipe")
             os.mkfifo(pipe_file)
             pipe_for_read = os.open(pipe_file, os.O_RDONLY | os.O_NONBLOCK)
-            with open(pipe_file, 'wb') as pipe_for_write:
-                pipe_for_write.write(b'binary content')
+            with open(pipe_file, "wb") as pipe_for_write:
+                pipe_for_write.write(b"binary content")
 
-            response = FileResponse(os.fdopen(pipe_for_read, mode='rb'))
+            response = FileResponse(os.fdopen(pipe_for_read, mode="rb"))
             response_content = list(response)
             response.close()
-            self.assertEqual(response_content, [b'binary content'])
-            self.assertFalse(response.has_header('Content-Length'))
+            self.assertEqual(response_content, [b"binary content"])
+            self.assertFalse(response.has_header("Content-Length"))
 
     def test_compressed_response(self):
         """
@@ -200,33 +215,34 @@ class FileResponseTests(SimpleTestCase):
         uncompress the file, which is most probably not wanted.
         """
         test_tuples = (
-            ('.tar.gz', 'application/gzip'),
-            ('.tar.bz2', 'application/x-bzip'),
-            ('.tar.xz', 'application/x-xz'),
+            (".tar.gz", "application/gzip"),
+            (".tar.bz2", "application/x-bzip"),
+            (".tar.xz", "application/x-xz"),
         )
         for extension, mimetype in test_tuples:
             with self.subTest(ext=extension):
                 with tempfile.NamedTemporaryFile(suffix=extension) as tmp:
                     response = FileResponse(tmp)
-                self.assertEqual(response.headers['Content-Type'], mimetype)
-                self.assertFalse(response.has_header('Content-Encoding'))
+                self.assertEqual(response.headers["Content-Type"], mimetype)
+                self.assertFalse(response.has_header("Content-Encoding"))
 
     def test_unicode_attachment(self):
         response = FileResponse(
-            ContentFile(b'binary content', name="祝您平安.odt"), as_attachment=True,
-            content_type='application/vnd.oasis.opendocument.text',
+            ContentFile(b"binary content", name="祝您平安.odt"),
+            as_attachment=True,
+            content_type="application/vnd.oasis.opendocument.text",
         )
         self.assertEqual(
-            response.headers['Content-Type'],
-            'application/vnd.oasis.opendocument.text',
+            response.headers["Content-Type"],
+            "application/vnd.oasis.opendocument.text",
         )
         self.assertEqual(
-            response.headers['Content-Disposition'],
+            response.headers["Content-Disposition"],
             "attachment; filename*=utf-8''%E7%A5%9D%E6%82%A8%E5%B9%B3%E5%AE%89.odt",
         )
 
     def test_repr(self):
-        response = FileResponse(io.BytesIO(b'binary content'))
+        response = FileResponse(io.BytesIO(b"binary content"))
         self.assertEqual(
             repr(response),
             '<FileResponse status_code=200, "application/octet-stream">',
diff --git a/tests/responses/tests.py b/tests/responses/tests.py
index 059cdf86ed..035dd39174 100644
--- a/tests/responses/tests.py
+++ b/tests/responses/tests.py
@@ -6,8 +6,8 @@ from django.http import HttpResponse
 from django.http.response import HttpResponseBase
 from django.test import SimpleTestCase
 
-UTF8 = 'utf-8'
-ISO88591 = 'iso-8859-1'
+UTF8 = "utf-8"
+ISO88591 = "iso-8859-1"
 
 
 class HttpResponseBaseTests(SimpleTestCase):
@@ -22,14 +22,20 @@ class HttpResponseBaseTests(SimpleTestCase):
         r = HttpResponseBase()
         self.assertIs(r.writable(), False)
 
-        with self.assertRaisesMessage(OSError, 'This HttpResponseBase instance is not writable'):
-            r.write('asdf')
-        with self.assertRaisesMessage(OSError, 'This HttpResponseBase instance is not writable'):
-            r.writelines(['asdf\n', 'qwer\n'])
+        with self.assertRaisesMessage(
+            OSError, "This HttpResponseBase instance is not writable"
+        ):
+            r.write("asdf")
+        with self.assertRaisesMessage(
+            OSError, "This HttpResponseBase instance is not writable"
+        ):
+            r.writelines(["asdf\n", "qwer\n"])
 
     def test_tell(self):
         r = HttpResponseBase()
-        with self.assertRaisesMessage(OSError, 'This HttpResponseBase instance cannot tell its position'):
+        with self.assertRaisesMessage(
+            OSError, "This HttpResponseBase instance cannot tell its position"
+        ):
             r.tell()
 
     def test_setdefault(self):
@@ -39,12 +45,12 @@ class HttpResponseBaseTests(SimpleTestCase):
         """
         r = HttpResponseBase()
 
-        r.headers['Header'] = 'Value'
-        r.setdefault('header', 'changed')
-        self.assertEqual(r.headers['header'], 'Value')
+        r.headers["Header"] = "Value"
+        r.setdefault("header", "changed")
+        self.assertEqual(r.headers["header"], "Value")
 
-        r.setdefault('x-header', 'DefaultValue')
-        self.assertEqual(r.headers['X-Header'], 'DefaultValue')
+        r.setdefault("x-header", "DefaultValue")
+        self.assertEqual(r.headers["X-Header"], "DefaultValue")
 
 
 class HttpResponseTests(SimpleTestCase):
@@ -60,16 +66,18 @@ class HttpResponseTests(SimpleTestCase):
         self.assertEqual(resp.reason_phrase, "Service Unavailable")
 
     def test_valid_status_code_string(self):
-        resp = HttpResponse(status='100')
+        resp = HttpResponse(status="100")
         self.assertEqual(resp.status_code, 100)
-        resp = HttpResponse(status='404')
+        resp = HttpResponse(status="404")
         self.assertEqual(resp.status_code, 404)
-        resp = HttpResponse(status='599')
+        resp = HttpResponse(status="599")
         self.assertEqual(resp.status_code, 599)
 
     def test_invalid_status_code(self):
-        must_be_integer = 'HTTP status code must be an integer.'
-        must_be_integer_in_range = 'HTTP status code must be an integer from 100 to 599.'
+        must_be_integer = "HTTP status code must be an integer."
+        must_be_integer_in_range = (
+            "HTTP status code must be an integer from 100 to 599."
+        )
         with self.assertRaisesMessage(TypeError, must_be_integer):
             HttpResponse(status=object())
         with self.assertRaisesMessage(TypeError, must_be_integer):
@@ -86,27 +94,31 @@ class HttpResponseTests(SimpleTestCase):
         self.assertEqual(resp.reason_phrase, reason)
 
     def test_charset_detection(self):
-        """ HttpResponse should parse charset from content_type."""
-        response = HttpResponse('ok')
+        """HttpResponse should parse charset from content_type."""
+        response = HttpResponse("ok")
         self.assertEqual(response.charset, settings.DEFAULT_CHARSET)
 
         response = HttpResponse(charset=ISO88591)
         self.assertEqual(response.charset, ISO88591)
-        self.assertEqual(response.headers['Content-Type'], 'text/html; charset=%s' % ISO88591)
+        self.assertEqual(
+            response.headers["Content-Type"], "text/html; charset=%s" % ISO88591
+        )
 
-        response = HttpResponse(content_type='text/plain; charset=%s' % UTF8, charset=ISO88591)
+        response = HttpResponse(
+            content_type="text/plain; charset=%s" % UTF8, charset=ISO88591
+        )
         self.assertEqual(response.charset, ISO88591)
 
-        response = HttpResponse(content_type='text/plain; charset=%s' % ISO88591)
+        response = HttpResponse(content_type="text/plain; charset=%s" % ISO88591)
         self.assertEqual(response.charset, ISO88591)
 
         response = HttpResponse(content_type='text/plain; charset="%s"' % ISO88591)
         self.assertEqual(response.charset, ISO88591)
 
-        response = HttpResponse(content_type='text/plain; charset=')
+        response = HttpResponse(content_type="text/plain; charset=")
         self.assertEqual(response.charset, settings.DEFAULT_CHARSET)
 
-        response = HttpResponse(content_type='text/plain')
+        response = HttpResponse(content_type="text/plain")
         self.assertEqual(response.charset, settings.DEFAULT_CHARSET)
 
     def test_response_content_charset(self):
@@ -118,13 +130,15 @@ class HttpResponseTests(SimpleTestCase):
         response = HttpResponse(utf8_content)
         self.assertContains(response, utf8_content)
 
-        response = HttpResponse(iso_content, content_type='text/plain; charset=%s' % ISO88591)
+        response = HttpResponse(
+            iso_content, content_type="text/plain; charset=%s" % ISO88591
+        )
         self.assertContains(response, iso_content)
 
         response = HttpResponse(iso_content)
         self.assertContains(response, iso_content)
 
-        response = HttpResponse(iso_content, content_type='text/plain')
+        response = HttpResponse(iso_content, content_type="text/plain")
         self.assertContains(response, iso_content)
 
     def test_repr(self):
@@ -134,8 +148,8 @@ class HttpResponseTests(SimpleTestCase):
 
     def test_repr_no_content_type(self):
         response = HttpResponse(status=204)
-        del response.headers['Content-Type']
-        self.assertEqual(repr(response), '<HttpResponse status_code=204>')
+        del response.headers["Content-Type"]
+        self.assertEqual(repr(response), "<HttpResponse status_code=204>")
 
     def test_wrap_textiowrapper(self):
         content = "Café :)"
@@ -147,10 +161,10 @@ class HttpResponseTests(SimpleTestCase):
     def test_generator_cache(self):
         generator = (str(i) for i in range(10))
         response = HttpResponse(content=generator)
-        self.assertEqual(response.content, b'0123456789')
+        self.assertEqual(response.content, b"0123456789")
         with self.assertRaises(StopIteration):
             next(generator)
 
-        cache.set('my-response-key', response)
-        response = cache.get('my-response-key')
-        self.assertEqual(response.content, b'0123456789')
+        cache.set("my-response-key", response)
+        response = cache.get("my-response-key")
+        self.assertEqual(response.content, b"0123456789")