examples smoke test

Author: akshayka

.github/workflows/test.yaml

@@ -0,0 +1,19 @@
+name: Tests
+
+on:
+  push:
+    branches: [main]
+  pull_request: {}
+
+jobs:
+  typos:
+    name: Test notebooks
+    runs-on: ubuntu-latest
+    steps:
+      - name: 🛑 Cancel Previous Runs
+        uses: styfle/cancel-workflow-action@0.12.1
+      - name: 🐍 Setup uv
+        uses: yezz123/setup-uv@v4
+      - name: Run tests
+        run: |
+          uvx --with marimo pytest -v

.github/workflows/test_typos.yaml

@@ -22,3 +22,10 @@ repos:
     rev: dictgen-v0.3.1
     hooks:
       - id: typos
+
+  - repo: https://github.com/astral-sh/ruff-pre-commit
+    rev: v0.9.1
+    hooks:
+      # Run the formatter
+      - id: ruff-format
+

.pre-commit-config.yaml

@@ -13,9 +13,8 @@ and apps.
 
 ## Running examples
 
-Each example has a README that tells you how to run it locally.
-
-Most examples can also be opened in marimo's [online
+Each example has a README that tells you how to run it locally. Most examples
+can also be opened in marimo's [online
 playground](https://docs.marimo.io/guides/publishing/playground/) by clicking
 the "open in marimo" badge in its README.
 
@@ -25,7 +24,8 @@ We welcome community contributions of examples; you don't need to be
 an expert to help out!
 
 Open a pull request to contribute a new example. Each example should be placed
-in its own folder and include a short `README.md`.
+in its own folder and include a short `README.md`. We also include smoke tests
+for each notebook in `tests/`. Run tests with `uvx --with marimo pytest .`
 
 Looking for a specific example or template but can't find it? Feel free
 to file an issue and request it!

README.md

@@ -0,0 +1,11 @@
+"""Smoke tests that check notebooks don't have syntax errors."""
+
+import pathlib
+import sys
+
+ROOT = pathlib.Path(__file__).parent.parent
+sys.path.append(str(ROOT))
+
+def test_nlp_span_comparison() -> None:
+    from nlp_span_comparison import nlp_span_comparison
+    assert not nlp_span_comparison.app._unparsable