diff --git a/.github/workflows/ci_cd_wf.yml b/.github/workflows/ci_cd_wf.yml
new file mode 100644
index 00000000..8ca03d4c
--- /dev/null
+++ b/.github/workflows/ci_cd_wf.yml
@@ -0,0 +1,29 @@
+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
\ No newline at end of file
diff --git a/.vscode/settings.json b/.vscode/settings.json
new file mode 100644
index 00000000..9b388533
--- /dev/null
+++ b/.vscode/settings.json
@@ -0,0 +1,7 @@
+{
+    "python.testing.pytestArgs": [
+        "tests"
+    ],
+    "python.testing.unittestEnabled": false,
+    "python.testing.pytestEnabled": true
+}
\ No newline at end of file
diff --git a/tests/test_calculator.py b/tests/test_calculator.py
index e69de29b..96ff63e0 100644
--- a/tests/test_calculator.py
+++ b/tests/test_calculator.py
@@ -0,0 +1,14 @@
+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) == 2