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/.gitignore b/.gitignore
index b1cb1601..5e8f6be6 100644
--- a/.gitignore
+++ b/.gitignore
@@ -159,3 +159,4 @@ cython_debug/
 #  option (not recommended) you can uncomment the following to ignore the entire idea folder.
 #.idea/
 
+.vscode/
\ No newline at end of file
diff --git a/tests/test_calculator.py b/tests/test_calculator.py
index e69de29b..aeae4a4d 100644
--- a/tests/test_calculator.py
+++ b/tests/test_calculator.py
@@ -0,0 +1,17 @@
+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
\ No newline at end of file