diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 675c540..c922a39 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -1,10 +1,11 @@
 name: CI
 
 on:
-  push:
-    branches: [main]
+  
   pull_request:
     branches: [main]
+  push:
+    branches: [main]
 
 jobs:
   build-and-test:
@@ -17,11 +18,13 @@ jobs:
       - name: Setup Node.js
         uses: actions/setup-node@v4
         with:
-          node-version: "22"
+          node-version: "18"
 
       - name: Install dependencies
         run: npm install
 
+      
+
       - name: Build TypeScript
         run: npm run build
 
@@ -31,6 +34,8 @@ jobs:
       - name: Run ESLint
         run: npm run lint
 
+      
+
       # FOR IT TO WORK WITH GITHUB Actions and push to Docker registry do the following
       # In your repo settings, go to Settings → Secrets and variables → Actions → Secrets, and add:
       # DOCKER_USERNAME – your Docker Hub username
diff --git a/src/LedBlue.ts b/src/LedBlue.ts
new file mode 100644
index 0000000..86dca87
--- /dev/null
+++ b/src/LedBlue.ts
@@ -0,0 +1,3 @@
+export function isLedBlue(red: boolean, green: boolean, blue: boolean): boolean{
+    return red == false && green == false && blue == true;
+}
\ No newline at end of file
diff --git a/src/index.ts b/src/index.ts
index 4491af4..1375169 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -14,4 +14,4 @@ app.get("/", (req: Request, res: Response) => {
 // Start the server
 app.listen(PORT, () => {
   console.log(`Server is running on http://localhost:${PORT}`);
-});
+});
\ No newline at end of file
diff --git a/src/test/ledBlue.test.ts b/src/test/ledBlue.test.ts
new file mode 100644
index 0000000..fe0c3e3
--- /dev/null
+++ b/src/test/ledBlue.test.ts
@@ -0,0 +1,2 @@
+import { describe, it, expect } from "vitest";
+import { isOverheating } from "../temperature";