Merge pull request rails#53626 from viralpraxis/add-actiondispatch-re…

…quest-session-store-method-to-conform-rack-spec

Add `ActionDispatch::Request::Session#store` method to conform Rack spec

actionpack/lib/action_dispatch/request/session.rb

@@ -155,6 +155,7 @@ def []=(key, value)
         load_for_write!
         @delegate[key.to_s] = value
       end
+      alias store []=
 
       # Clears the session.
       def clear

actionpack/test/dispatch/request/session_test.rb

@@ -50,6 +50,12 @@ def test_destroy
         assert_empty s
       end
 
+      def test_store
+        s = Session.create(store, req, {})
+        s.store("foo", "bar")
+        assert_equal "bar", s["foo"]
+      end
+
       def test_keys
         s = Session.create(store, req, {})
         s["rails"] = "ftw"
@@ -205,7 +211,11 @@ def call(env)
       end
 
       def app
-        @app ||= RoutedRackApp.new(Router)
+        @app ||= RoutedRackApp.new(Router) do |middleware|
+          @cache = ActiveSupport::Cache::MemoryStore.new
+          middleware.use ActionDispatch::Session::CacheStore, key: "_session_id", cache: @cache
+          middleware.use Rack::Lint
+        end
       end
 
       def test_session_follows_rack_api_contract_1