add core tests

Author: LiamConnors

.github/workflows/tests.yml

@@ -24,3 +24,29 @@ jobs:
 
       - name: Check code formatting with ruff
         run: uv run ruff format --check .
+
+  test-core:
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        python-version: ["3.8", "3.9", "3.10", "3.11", "3.12", "3.13"]
+    steps:
+      - uses: actions/checkout@v6
+
+      - name: Install uv
+        uses: astral-sh/setup-uv@v7
+        with:
+          python-version: ${{ matrix.python-version }}
+
+      - name: Install dependencies
+        run: uv sync --extra dev_core
+
+      - name: List installed packages
+        run: |
+          uv pip list
+          uv run python --version
+
+      - name: Test core
+        run: uv run pytest tests/test_core
+        timeout-minutes: 20