feat: add functional tests.

.github/workflows/test.yaml

@@ -1,25 +1,19 @@
-name: Run Tests
-
-on:
-  push:
-    branches:
-      - test
-  pull_request:
-    branches:
-      - test
-
 jobs:
   test:
     runs-on: ubuntu-latest
 
+    strategy:
+      matrix:
+        python-version: ["3.7", "3.8", "3.9", "3.10"]
+
     steps:
       - name: Checkout repository
         uses: actions/checkout@v4
 
       - name: Set up Python
         uses: actions/setup-python@v4
         with:
-          python-version: "3.9"
+          python-version: ${{ matrix.python-version }}
 
       - name: Install dependencies
         run: |