diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
new file mode 100644
index 0000000..42cd6ad
--- /dev/null
+++ b/.github/workflows/test.yml
@@ -0,0 +1,30 @@
+name: test
+
+on: [push, pull_request]
+
+jobs:
+  test:
+    strategy:
+      matrix:
+        os: [ubuntu-latest, windows-latest, macos-latest]
+        python-version: [3.8, 3.9]
+    runs-on: ${{ matrix.os }}
+
+    steps:
+      - uses: actions/checkout@v3
+
+      - name: Set up Python
+        uses: actions/setup-python@v4
+        with:
+          python-version: ${{ matrix.python-version }}
+
+      - name: Install dependencies
+        run: |
+          pip3 install --upgrade setuptools
+          pip3 install .[dev]
+
+      - name: Run tests
+        run: |
+          ss-manager -h
+          pytest -v
+        shell: bash
diff --git a/setup.cfg b/setup.cfg
index ba20a55..ebeb452 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -18,6 +18,7 @@ dev =
     isort
     black
     mypy
+    pytest
 
 [flake8]
 max-line-length = 100
diff --git a/tests/test_hello.py b/tests/test_hello.py
new file mode 100644
index 0000000..bf8cc89
--- /dev/null
+++ b/tests/test_hello.py
@@ -0,0 +1,9 @@
+import pytest
+
+
+def hello():
+    return "Hello, world!"
+
+
+def test_hello():
+    assert hello() == "Hello, world!"