Add UI tests

.gitattributes

@@ -0,0 +1,2 @@
+# SCM syntax highlighting & preventing 3-way merges
+pixi.lock merge=binary linguist-language=YAML linguist-generated=true

.github/workflows/deploy.yml

@@ -1,4 +1,4 @@
-name: Build and Deploy
+name: Build, Test, and Deploy
 
 on:
   push:
@@ -20,25 +20,80 @@ jobs:
     steps:
       - name: Checkout
         uses: actions/checkout@v4
-      - name: Install micromamba
-        uses: mamba-org/setup-micromamba@v1
+      - uses: prefix-dev/setup-pixi@v0.9.3
         with:
-          micromamba-version: '2.0.5-0'
-          environment-file: build-environment.yml
-          cache-environment: true
+          pixi-version: v0.59.0
+          cache: true
       - name: Build the JupyterLite site
         shell: bash -l {0}
         run: |
           cp README.md content
-          jupyter lite build --contents content --output-dir dist
+          pixi run build
 
-      - name: Upload dist
-        uses: actions/upload-pages-artifact@v3
+      - name: Upload dist artifact for testing
+        uses: actions/upload-artifact@v4
         with:
+          name: jupyterlite-dist
           path: ./dist
 
-  deploy:
+      - name: Upload dist for GitHub Pages
+        uses: actions/upload-pages-artifact@v4
+        with:
+          path: ./dist
+
+  test:
     needs: build
+    runs-on: ubuntu-latest
+    timeout-minutes: 30
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Setup pixi
+        uses: prefix-dev/setup-pixi@v0.9.3
+        with:
+          pixi-version: v0.59.0
+          cache: true
+
+      - name: Download built site
+        uses: actions/download-artifact@v4
+        with:
+          name: jupyterlite-dist
+          path: ./dist
+
+      - name: Install Playwright browsers
+        shell: bash -l {0}
+        run: |
+          pixi run playwright install --with-deps chromium
+
+      - name: Run notebook tests
+        shell: bash -l {0}
+        run: |
+          pixi run test
+
+      - name: Upload screenshots on failure
+        if: failure()
+        uses: actions/upload-artifact@v4
+        with:
+          name: test-screenshots
+          path: |
+            ui-tests/screenshot_*.png
+            ui-tests/videos
+          if-no-files-found: ignore
+
+      - name: Upload test results
+        if: always()
+        uses: actions/upload-artifact@v4
+        with:
+          name: pytest-results
+          path: |
+            ui-tests/report.html
+            ui-tests/test-results
+          if-no-files-found: ignore
+
+  deploy:
+    needs: test
     if: github.ref == 'refs/heads/main'
     permissions:
       pages: write

.github/workflows/rtd-preview.yml

@@ -20,5 +20,5 @@ jobs:
               issue_number: context.issue.number,
               owner: context.repo.owner,
               repo: context.repo.repo,
-              body: `[![lite-badge](https://jupyterlite.rtfd.io/en/latest/_static/badge.svg)](https://try-jupyter--${PR_NUMBER}.org.readthedocs.build/en/${PR_NUMBER}/lite/lab/index.html) :point_left: Try it on ReadTheDocs`
+              body: `[![lite-badge](https://jupyterlite.rtfd.io/en/latest/_static/badge.svg)](https://try-jupyter--${PR_NUMBER}.org.readthedocs.build/en/${PR_NUMBER}) :point_left: Try it on ReadTheDocs`
             })

.gitignore

@@ -114,3 +114,17 @@ dmypy.json
 # jupyterlite
 *.doit.db
 _output
+# pixi environments
+.pixi/*
+!.pixi/config.toml
+
+# JupyterLite terminal
+cockle-config.json
+.cockle_temp/
+cockle_wasm_env/
+
+# UI tests
+ui-tests/*.png
+ui-tests/report.html
+ui-tests/.pytest_cache/
+ui-tests/videos/

.readthedocs.yml

@@ -1,12 +1,11 @@
 version: 2
-
 build:
-  os: "ubuntu-20.04"
+  os: ubuntu-22.04
   tools:
-    python: "miniconda-latest"
-
-conda:
-  environment: build-environment.yml
-
-sphinx:
-   configuration: conf.py
+    # this ensures a viable `mamba` is on `$PATH``
+    python: mambaforge-latest
+  commands:
+    - mamba install -c conda-forge -c nodefaults pixi
+    - pixi install
+    - pixi run build
+    - pixi run readthedocs