diff --git a/TODO.md b/TODO.md
index a23a33a..8d2074d 100644
--- a/TODO.md
+++ b/TODO.md
@@ -1,7 +1,9 @@
 TODO
 ====
 
-* [ ] Minitest
+* [ ] Flash message
+  * [ ] https://reinteractive.com/articles/how-to-create-flash-messages-in-Rails-7
+  * [ ] 
 * [ ] Tailwind
   * [ ] copy TailAdmin (or WindMill) layout 
     * [ ] https://demo.tailadmin.com/crm
@@ -25,6 +27,7 @@ TODO
 New Notes
 ---------
 
+* [x] Minitest
 * [x] Formatter
   * [x] wrap warning containing \n
   * [x] "\e[0;35mhello".length => 12 instead of 5!
\ No newline at end of file
diff --git a/app/javascript/application.js b/app/javascript/application.js
index b8cbcf1..166ea10 100644
--- a/app/javascript/application.js
+++ b/app/javascript/application.js
@@ -7,4 +7,4 @@ import Toastify from 'toastify-js'
 window.Toastify=Toastify
 
 // Js Controllers
-import "controllers"
\ No newline at end of file
+import "controllers"
diff --git a/app/javascript/controllers/application.js b/app/javascript/controllers/application.js
index 1213e85..c84f770 100644
--- a/app/javascript/controllers/application.js
+++ b/app/javascript/controllers/application.js
@@ -3,7 +3,7 @@ import { Application } from "@hotwired/stimulus"
 const application = Application.start()
 
 // Configure Stimulus development experience
-application.debug = false
+application.debug = true
 window.Stimulus   = application
 
 export { application }
diff --git a/app/javascript/controllers/toast_controller.js b/app/javascript/controllers/toast_controller.js
new file mode 100644
index 0000000..b2dda29
--- /dev/null
+++ b/app/javascript/controllers/toast_controller.js
@@ -0,0 +1,8 @@
+import { Controller } from "@hotwired/stimulus"
+
+export default class extends Controller {
+  connect() {
+    console.log('toast.js: ', this.element)
+    this.element.textContent = "Toast #1"
+  }
+}
diff --git a/config/importmap.rb b/config/importmap.rb
index 6ee0304..bac13c7 100644
--- a/config/importmap.rb
+++ b/config/importmap.rb
@@ -1,9 +1,9 @@
 # Pin npm packages by running ./bin/importmap
 
 pin 'application'
+pin_all_from 'app/javascript/controllers', under: 'controllers'
+
 pin '@hotwired/turbo-rails', to: 'turbo.min.js', preload: true
 pin '@hotwired/stimulus', to: 'stimulus.min.js'
 pin '@hotwired/stimulus-loading', to: 'stimulus-loading.js'
-pin_all_from 'app/javascript/controllers', under: 'controllers'
-
 pin 'toastify-js' # @1.12.0