Improve tests with pytest

Author: LBeaudoux

.github/workflows/ci.yml

@@ -26,8 +26,9 @@ jobs:
         python-version: ${{ matrix.python-version }}
     - name: Install package
       run: |
-        python3 -m pip install --upgrade pip
-        python3 -m pip install .
+        python -m pip install --upgrade pip
+        python -m pip install .
     - name: Test
       run: |
-        python3 test.py
+        pip install pytest 
+        pytest tests/

requirements-dev.txt

@@ -1,4 +1,5 @@
 beautifulsoup4>=4.12
 lxml>=5.3.0
 pandas>=2.0.3
-requests>=2.32.3
+requests>=2.32.3
+pytest>=8.3.2