Improve ActionCable TestCookieJar interface

Fixes #51914

actioncable/lib/action_cable/connection/test_case.rb

@@ -30,16 +30,23 @@ module ActionCable
       end
     end
 
+    class TestCookies < ActiveSupport::HashWithIndifferentAccess
+      def []=(name, options)
+        value = options.is_a?(Hash) ? options.symbolize_keys[:value] : options
+        super(name, value)
+      end
+    end
+
     # We don't want to use the whole "encryption stack" for connection unit-tests,
     # but we want to make sure that users test against the correct types of cookies
     # (i.e. signed or encrypted or plain)
-    class TestCookieJar < ActiveSupport::HashWithIndifferentAccess
+    class TestCookieJar < TestCookies
       def signed
-        self[:signed] ||= {}.with_indifferent_access
+        @signed ||= TestCookies.new
       end
 
       def encrypted
-        self[:encrypted] ||= {}.with_indifferent_access
+        @encrypted ||= TestCookies.new
       end
     end
 

actioncable/test/connection/test_case_test.rb

@@ -47,6 +47,14 @@ class ConnectionSimpleTest < ActionCable::Connection::TestCase
     assert_equal "456", connection.user_id
   end
 
+  def test_plain_cookie_with_explicit_value_and_string_key
+    cookies["user_id"] = { "value" => "456" }
+
+    connect
+
+    assert_equal "456", connection.user_id
+  end
+
   def test_disconnect
     cookies["user_id"] = "456"
 
@@ -133,6 +141,14 @@ class EncryptedCookiesConnectionTest < ActionCable::Connection::TestCase
     assert_equal "456", connection.user_id
   end
 
+  def test_connected_with_encrypted_cookies_with_explicit_value_and_symbol_key
+    cookies.encrypted["user_id"] = { value: "456" }
+
+    connect
+
+    assert_equal "456", connection.user_id
+  end
+
   def test_connection_rejected
     assert_reject_connection { connect }
   end