Add unit tests action

.github/workflows/unit-tests.yml

@@ -0,0 +1,49 @@
+name: Unit tests
+
+on: [push]
+
+jobs:
+  tests:
+    name: Test against Python ${{ matrix.python-version }}
+    runs-on: ubuntu-latest
+
+    strategy:
+      fail-fast: false
+      matrix:
+        # If the matrix, you must also update after_n_builds in codecov.yml to match the number of times the test suite is run
+        python-version: ["3.13", "3.12", "3.11"]
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Set up Python ${{ matrix.python-version }}
+        uses: actions/setup-python@v5
+        with:
+          python-version: ${{ matrix.python-version }}
+
+      - name: Display Python version
+        run: python --version
+
+      - name: Install dependencies
+        run: |
+          pip install poetry
+          poetry install
+
+      - name: Run pytest
+        run: poetry run pytest --cov --cov-report=xml --junitxml=junit.xml -o junit_family=legacy
+        env:
+          PYTHON_VERSION: ${{ matrix.python-version }}
+
+      - name: Upload code coverage results to Codecov
+        uses: codecov/codecov-action@v4
+        if: ${{ !cancelled() }}
+        with:
+          token: ${{ secrets.CODECOV_TOKEN }}
+          fail_ci_if_error: true
+
+      - name: Upload test analysis results to Codecov
+        uses: codecov/test-results-action@v1
+        if: ${{ !cancelled() }}
+        with:
+          token: ${{ secrets.CODECOV_TOKEN }}
+          fail_ci_if_error: true