diff --git a/.github/workflows/ci_cd_wf.yml b/.github/workflows/ci_cd_wf.yml
new file mode 100644
index 00000000..effbca7b
--- /dev/null
+++ b/.github/workflows/ci_cd_wf.yml
@@ -0,0 +1,46 @@
+name : test
+
+on:
+  push:
+    branches:
+      - main
+  pull_request:
+        branches:
+          - "*"
+
+jobs:
+  test:
+    runs-on : ubuntu-latest
+
+    steps:
+      - name: Check out repo code
+        uses: actions/checkout@v3
+
+      - name: Setup Python
+        uses: actions/setup-python@v3
+        with:
+          python-version: "3.x"
+
+      - name: Install Dependencies
+        run: |
+          python -m pip install -r requirements.txt
+      - name: Run tests
+        run: |
+          python -m pytest -v tests
+
+      - name: Pytest coverage comment
+        uses: MishaKav/pytest-coverage-comment@main
+        with:
+            pytest-coverage-path: ./path-to-file/pytest-coverage.txt
+            pytest-xml-coverage-path: ./path-to-file/coverage.xml
+            title: My Coverage Report Title
+            badge-title: My Badge Coverage Title
+            hide-badge: false
+            hide-report: false
+            create-new-comment: false
+            hide-comment: false
+            report-only-changed-files: false
+            remove-link-from-badge: false
+            unique-id-for-comment: python3.8
+            junitxml-path: ./path-to-file/pytest.xml
+            junitxml-title: My JUnit Xml Summary Title
\ No newline at end of file
diff --git a/tests/test_calculator.py b/tests/test_calculator.py
index e69de29b..073cf6dd 100644
--- a/tests/test_calculator.py
+++ b/tests/test_calculator.py
@@ -0,0 +1,12 @@
+from calculator import add, div, mul, sub
+def test_add():
+    assert add(1,1) == 2
+
+def test_sub():
+    assert sub(1,1) == 0
+
+def test_mul():
+    assert mul(1,1) == 1
+
+def test_div():
+    assert div(2,1) == 0
\ No newline at end of file