Merge branch 'optuna:master' into plotly-timeline-plot

.github/workflows/visual-regression.yml

@@ -0,0 +1,58 @@
+name: Visual regression tests with Netlify
+
+on:
+  pull_request:
+    paths:
+      - 'optuna/visualization/**'
+  workflow_dispatch:
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref == 'refs/heads/master' && github.run_number || github.ref }}
+  cancel-in-progress: true
+
+jobs:
+  tests:
+
+    runs-on: ubuntu-latest
+
+    # Not intended for forks.
+    if: github.repository == 'optuna/optuna'
+
+    steps:
+
+    - uses: actions/checkout@v3
+
+    - uses: actions/setup-python@v4
+      with:
+        python-version: 3.8
+
+    - name: Install Optuna
+      run: |
+        pip install -U pip
+        pip install --progress-bar off .
+    - name: Install Optuna visual regression
+      run: |
+        git clone https://github.com/optuna/optuna-visualization-regression-tests.git
+        pip install -r optuna-visualization-regression-tests/requirements.txt
+    - name: Build
+      run: |
+        pushd optuna-visualization-regression-tests
+        python visual_regression_tests.py --heavy --output-dir ./public
+        popd
+      env:
+        OMP_NUM_THREADS: 1
+    - uses: actions/upload-artifact@v2
+      with:
+        name: built-html
+        path: |
+          ./optuna-visualization-regression-tests/public
+    - name: Deploy to Netlify
+      uses: nwtgck/actions-netlify@v2
+      with:
+        publish-dir: './optuna-visualization-regression-tests/public'
+        github-token: ${{ secrets.GITHUB_TOKEN }}
+        deploy-message: "Deploy from GitHub Actions"
+      env:
+        NETLIFY_AUTH_TOKEN: ${{ secrets.NETLIFY_AUTH_TOKEN }}
+        NETLIFY_SITE_ID: ${{ secrets.NETLIFY_SITE_ID }}
+      timeout-minutes: 1