From c55a28b7bbdcf45a0443bf97d258a31920b1f8ab Mon Sep 17 00:00:00 2001
From: Nachiket Pusalkar <33430835+nachiket87@users.noreply.github.com>
Date: Thu, 9 Nov 2023 11:59:29 -0500
Subject: [PATCH] add test to verify duplicate controller are not registered

---
 test/fixtures/controllers/hello_controller.ts | 15 +++++++++++++++
 test/manifest_test.rb                         |  3 +++
 2 files changed, 18 insertions(+)
 create mode 100644 test/fixtures/controllers/hello_controller.ts

diff --git a/test/fixtures/controllers/hello_controller.ts b/test/fixtures/controllers/hello_controller.ts
new file mode 100644
index 0000000..9ae5f32
--- /dev/null
+++ b/test/fixtures/controllers/hello_controller.ts
@@ -0,0 +1,15 @@
+// hello_controller.ts
+import { Controller } from "stimulus";
+
+export default class extends Controller {
+  static targets = ["name", "output"];
+
+  declare readonly nameTarget: HTMLInputElement;
+  declare readonly outputTarget: HTMLElement;
+
+  greet() {
+    this.outputTarget.textContent =
+      `Hello, ${this.nameTarget.value}!`
+  }
+
+}
diff --git a/test/manifest_test.rb b/test/manifest_test.rb
index eb9de3a..f5ef21a 100644
--- a/test/manifest_test.rb
+++ b/test/manifest_test.rb
@@ -9,6 +9,9 @@ class Stimulus::Manifest::Test < ActiveSupport::TestCase
     assert_includes manifest, 'import HelloController from "./hello_controller"'
     assert_includes manifest, 'application.register("hello", HelloController)'
 
+    assert_equal 1, manifest.scan('import HelloController from "./hello_controller"').length
+    assert_equal 1, manifest.scan('application.register("hello", HelloController').length
+
     # CoffeeScript controller
     assert_includes manifest, 'import CoffeeController from "./coffee_controller"'
     assert_includes manifest, 'application.register("coffee", CoffeeController)'