Fix deprecation warning message to match tests

Author: kishorhange111

Lib/http/cookies.py

@@ -541,11 +541,10 @@ def __repr__(self):
         return '<%s: %s>' % (self.__class__.__name__, _spacejoin(l))
 
     def js_output(self, attrs=None):
-        warnings.warn(
-            "http.cookies.BaseCookie.js_output() is deprecated and will "
-            "be removed in Python 3.19; use output() instead",
-            DeprecationWarning,
-            stacklevel=2,
+        warnings._deprecated(
+            "http.cookies.BaseCookie.js_output",
+            remove=(3, 19),
+            message="http.cookies.BaseCookie.js_output() is deprecated, use output() instead",
         )
         """Return a string suitable for JavaScript."""
         result = []

Lib/test/test_http_cookies.py

@@ -676,20 +676,21 @@ def test_control_characters_output(self):
             morsel._key = c0  # Override private variable.
             cookie = cookies.SimpleCookie()
             cookie["cookie"] = morsel
-            with self.assertWarnsRegex(DeprecationWarning, r"BaseCookie\.js_output"):
-                with self.assertRaises(cookies.CookieError):
+            with self.assertRaises(cookies.CookieError):
+                with self.assertWarnsRegex(DeprecationWarning, r"BaseCookie\.js_output"):
                     cookie.js_output()
 
             morsel = cookies.Morsel()
             morsel.set("key", "value", "coded-value")
             morsel._coded_value = c0  # Override private variable.
             cookie = cookies.SimpleCookie()
             cookie["cookie"] = morsel
-            with self.assertWarnsRegex(DeprecationWarning, r"BaseCookie\.js_output"):
-                with self.assertRaises(cookies.CookieError):
+            with self.assertRaises(cookies.CookieError):
+                with self.assertWarnsRegex(DeprecationWarning, r"BaseCookie\.js_output"):
                     cookie.js_output()
 
 
+
 def load_tests(loader, tests, pattern):
     tests.addTest(doctest.DocTestSuite(cookies))
     return tests