diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
new file mode 100644
index 0000000..f76a6be
--- /dev/null
+++ b/.github/workflows/ci.yml
@@ -0,0 +1,31 @@
+name: Running Code Coverage
+
+on: [pull_request]
+
+jobs:
+  build:
+
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Checkout repository
+      uses: actions/checkout@v2
+      with:
+        fetch-depth: 2
+
+    - name: Set up Node.js 16.x
+      uses: actions/setup-node@v2
+      with:
+        node-version: 16.x
+
+    - name: Install dependencies
+      run: npm install
+
+    - name: Run tests
+      run: npm run test
+
+    - name: Upload coverage to Codecov
+      uses: codecov/codecov-action@v1
+      with:
+        token: ${{ secrets.CODECOV_TOKEN}}
+
diff --git a/README.md b/README.md
index 95a18a6..6991921 100644
--- a/README.md
+++ b/README.md
@@ -8,7 +8,7 @@
 
 [![npm version](https://img.shields.io/npm/v/mm-mobile-tools.svg?style=flat-square)](https://www.npmjs.org/package/mm-mobile-tools)
 ![Build status](https://github.com/lwinmoehein/MM-Mobiile-Tools-JS/actions/workflows/cd.yml/badge.svg)
-[![code coverage](https://img.shields.io/coveralls/mzabriskie/mm-mobile-tools.svg?style=flat-square)](https://coveralls.io/r/lwinmoehein/mm-mobile-tools)
+[![codecov](https://codecov.io/gh/lwinmoehein/MM-Mobile-Tools-JS/graph/badge.svg?token=YVS9A98YJQ)](https://codecov.io/gh/lwinmoehein/MM-Mobile-Tools-JS)
 [![npm downloads](https://img.shields.io/npm/dm/mm-mobile-tools.svg?style=flat-square)](https://npm-stat.com/charts.html?package=mm-mobile-tools)
 
 </div>
diff --git a/__tests__/GetOperator.test.ts b/__tests__/GetOperator.test.ts
index 073cbeb..cb36ce2 100644
--- a/__tests__/GetOperator.test.ts
+++ b/__tests__/GetOperator.test.ts
@@ -17,4 +17,8 @@ describe('Phone Number validation checks', () => {
 	test('Should return true for valid MECTel phone number', () => {
 		expect(mmphone.getOperator("09301173991")).toBe(Operator.MECTEL);
 	});
+	test('Should return true  for invalid phone number', () => {
+		expect(mmphone.getOperator("0911223344881")).toBe(Operator.INVALID);
+	});
+
 });