test both Python 3.9 and 3.13 in CircleCI

These are the oldest and newest versions (to be) supported.

Author: martinpopel

.circleci/config.yml

@@ -15,13 +15,16 @@ orbs:
 # See: https://circleci.com/docs/2.0/configuration-reference/#jobs
 jobs:
   build-and-test: # This is the name of the job, feel free to change it to better match what you're trying to do!
+    parameters:
+      python-version:
+        type: string
     # These next lines defines a Docker executors: https://circleci.com/docs/2.0/executor-types/
     # You can specify an image from Dockerhub or use one of the convenience images from CircleCI's Developer Hub
     # A list of available CircleCI Docker convenience images are available here: https://circleci.com/developer/images/image/cimg/python
     # The executor is the environment in which the steps below will be executed - below will use a python 3.10.2 container
     # Change the version below to your required version of python
     docker:
-      - image: cimg/python:3.9
+      - image: cimg/python:<< parameters.python-version >>
     # Checkout the code as the first step. This is a dedicated CircleCI step.
     # The python orb's install-packages step will install the dependencies from a Pipfile via Pipenv by default.
     # Here we're making sure we use just use the system-wide pip. By default it uses the project root's requirements.txt.
@@ -31,15 +34,12 @@ jobs:
       - checkout
       - python/install-packages:
           pkg-manager: pip
-          # app-dir: ~/project/package-directory/  # If you're requirements.txt isn't in the root directory.
-          # pip-dependency-file: test-requirements.txt  # if you have a different name for your requirements file, maybe one that combines your runtime and test requirements.
       - run:
           name: Install Udapi
           command: pip install ".[test]"
       - run: mkdir -p test-results
       - run:
           name: Run pytest tests
-          # This assumes pytest is installed via the install-package step above
           command: pytest --junitxml=test-results/junit.xml -o junit_family=legacy
       - store_test_results:
           path: test-results
@@ -54,7 +54,9 @@ jobs:
 # Invoke jobs via workflows
 # See: https://circleci.com/docs/2.0/configuration-reference/#workflows
 workflows:
-  sample: # This is the name of the workflow, feel free to change it to better match your workflow.
-    # Inside the workflow, you define the jobs you want to run.
+  test-matrix:
     jobs:
-      - build-and-test
+      - build-and-test:
+          matrix:
+            parameters:
+              python-version: ["3.9", "3.13"]