Add dev dependencies to poetry

.github/workflows/tests-core.yaml

@@ -25,10 +25,29 @@ jobs:
         uses: actions/setup-python@v2
         with:
           python-version: ${{ matrix.python-version }}
-      - name: Install Package (Local)
+      - name: Install Poetry
+        uses: snok/install-poetry@v1
+        with:
+          virtualenvs-create: true
+          virtualenvs-in-project: true
+          virtualenvs-path: .venv
+
+      - name: Load cached venv
+        id: cached-poetry-dependencies
+        uses: actions/cache@v4
+        with:
+          path: .venv
+          key: venv-${{ runner.os }}-${{ steps.setup-python.outputs.python-version }}-${{ hashFiles('**/poetry.lock') }}-dev
+
+      - name: Install dependencies
+        if: steps.cached-poetry-dependencies.outputs.cache-hit != 'true'
+        run: poetry install --no-interaction --no-root --with dev
+
+      - name: Install project
+        run: poetry install --no-interaction
+
+      - name: Run Download Tests
         run: |
-          python -m pip install --upgrade pip
-          pip install .
-      - name: Run Core Tests
-        run: |
-          pytest -ra -v -m "not download"
+          source .venv/bin/activate
+          pytest -ra -v -m "download"
+          coverage report