Make positional arguments optional for set_cookie_item action (#23)

This pull request updates the stream helper for the `set_cookie_item` action. It makes the positional arguments optional in order to just allow to specify them as keyword arguments.

this action was implemented in marcoroth/turbo_power#32

Author: marcoroth

lib/turbo_power/stream_helper.rb

@@ -153,8 +153,8 @@ def set_cookie(cookie, **attributes)
       custom_action :set_cookie, attributes: attributes.merge(cookie: cookie)
     end
 
-    def set_cookie_item(key, value, **attributes)
-      custom_action :set_cookie_item, attributes: attributes.merge(key: key, value: value)
+    def set_cookie_item(key = nil, value = nil, **attributes)
+      custom_action :set_cookie_item, attributes: { key: key, value: value }.merge(attributes)
     end
 
     def set_focus(target, **attributes)

test/turbo_power/stream_helper/set_cookie_item_test.rb

@@ -0,0 +1,21 @@
+# frozen_string_literal: true
+
+require "test_helper"
+
+module TurboPower
+  module StreamHelper
+    class SetCookieItemTest < StreamHelperTestCase
+      test "set_cookie_item" do
+        stream = %(<turbo-stream key="my-key" value="my-value" action="set_cookie_item"><template></template></turbo-stream>)
+
+        assert_dom_equal stream, turbo_stream.set_cookie_item("my-key", "my-value")
+      end
+
+      test "set_cookie_item with kwargs" do
+        stream = %(<turbo-stream key="my-key" value="my-value" action="set_cookie_item"><template></template></turbo-stream>)
+
+        assert_dom_equal stream, turbo_stream.set_cookie_item(key: "my-key", value: "my-value")
+      end
+    end
+  end
+end