Add a test workflow

.github/workflows/test.yaml

@@ -0,0 +1,33 @@
+name: Python CI
+
+on:
+  push:
+    branches:
+      - '**'
+  pull_request:
+    branches:
+      - '**'
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Check out the code
+      uses: actions/checkout@v3
+
+    - name: Set up Python
+      uses: actions/setup-python@v4
+      with:
+        python-version: '3.x'  # Specify your Python version, like '3.9'
+
+    - name: Install dependencies
+      run: |
+        python -m pip install --upgrade pip
+        pip install -r python/metaprompt/requirements.txt  # If you have a requirements file
+        pip install pytest
+
+    - name: Run tests
+      working-directory: python/metaprompt
+      run: |
+        pytest