improve test server

Author: patricklx

ember_debug_test_app/ember-cli-build.js

@@ -1,10 +1,18 @@
 'use strict';
 
 const EmberApp = require('ember-cli/lib/broccoli/ember-app');
+const path = require('path');
+const fs = require('fs');
+
+const testingDir = path.resolve(__dirname, '../dist/testing');
+const testingFolderExists = fs.existsSync(testingDir);
 
 module.exports = function (defaults) {
   const app = new EmberApp(defaults, {
     'ember-cli-babel': { enableTypeScriptTransform: true },
+    trees: {
+      public: testingFolderExists ? testingDir : 'public',
+    },
   });
 
   return app.toTree();

ember_debug_test_app/package.json

@@ -16,7 +16,7 @@
     "copy-ember-debug": "cp ../dist/ember_debug.js ./public",
     "test:ember": "ember test",
     "ember": "ember",
-    "test-server:ember": "ember test --serve"
+    "test-server:ember": "ember test --serve --watcher node"
   },
   "devDependencies": {
     "@babel/core": "^7.26.0",