Run matplotlylib tests in CI

Author: robertoffmoura

.github/workflows/run-pytest.yml

@@ -161,3 +161,30 @@ jobs:
         run: |
           source .venv/bin/activate
           python -m pytest tests/test_optional/test_kaleido/test_kaleido_v0_error.py
+
+  test-matplotlylib:
+    name: Matplotlylib tests (Python ${{ matrix.python-version }})
+    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@de0fac2e4500dabe0009e67214ff5f5447ce83dd  # v6.0.2
+      - name: Set up Python
+        uses: actions/setup-python@a309ff8b426b58ec0e2a45f0f869d46889d02405  # v6.2.0
+        with:
+          python-version: ${{ matrix.python-version }}
+      - name: Set up uv
+        uses: astral-sh/setup-uv@cec208311dfd045dd5311c1add060b2062131d57  # v8.0.0
+      - name: Install dependencies
+        run: |
+          uv venv
+          source .venv/bin/activate
+          uv sync --extra dev_core
+          uv pip install matplotlib
+          python --version
+      - name: Test matplotlylib
+        run: |
+          source .venv/bin/activate
+          python -m pytest plotly/matplotlylib/tests plotly/matplotlylib/mplexporter/tests