jon.recoil.org
forked from
anil.recoil.org/monopam-myspace
My aggregated monorepo of OCaml code, automaintained
Add E2E test suite for site notebooks, scrollycode, and page health
Playwright-based tests covering:
- Exam notebooks (focs_2020_q2, focs_2024_q1, focs_2025_q2): injects
correct OCaml solutions and verifies test cells pass
- Foundations notebooks (lectures 1-11): runs all interactive cells,
tolerates known cross-lecture Unbound errors in lectures 5/7/8
- ONNX inference: tensor addition via widget output (sentiment skipped
in CI due to model download size)
- Scrollycode: validates HTML structure of all 3 scrollycode pages
- Page health: 34 pages load without console errors, interactive pages
have x-ocaml meta tags
- SPA navigation: documents known bug where innerHTML breaks custom
element connectedCallback
57 tests pass, 1 skipped (sentiment in CI).
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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docs/plans/2026-03-09-e2e-test-suite-design.md
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docs/plans/2026-03-09-e2e-test-suite-design.md
···
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# E2E Test Suite Design
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## Goal
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Automated Playwright tests for the built site (`_site/`) verifying that interactive
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notebooks, exam cells, ONNX inference, scrollycode structure, and SPA navigation
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all work correctly.
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## Approach
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Use `@playwright/test` framework with a `webServer` config serving `_site/`.
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Tests live at `test/e2e/` in the repo root.
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## Test Categories
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### 1. Exam Notebooks (P0)
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Pages: `focs_2020_q2.html`, `focs_2024_q1.html`, `focs_2025_q2.html`
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Each has `{@ocaml test for=...}` cells with assertions. Load page, wait for all
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cells to complete, verify stdout contains expected strings ("All tests passed!",
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specific numeric values).
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### 2. Foundations Notebooks (P1)
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Pages: `foundations1.html` through `foundations11.html`
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~300 cells total, no explicit assertions. Verify:
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- `run-on=load` cells produce output without errors
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- Click-to-run cells execute without errors when triggered
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- No `.caml_stderr` containing "Error:" or "Unbound"
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### 3. ONNX Inference (P0)
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- `sentiment_example.html`: Default text classified as POSITIVE
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- `add_example.html`: Output contains expected tensor sum [5, 7, 9]
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Extended timeouts (~120s) for model download.
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### 4. Scrollycode Structure (P2)
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Pages: `warm_parser.html`, `dark_repl.html`, `notebook_testing.html`
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Static HTML checks (no execution needed):
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- `.sc-container` exists
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- Step count matches progress pip count
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- Each step has title and non-empty code slot
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- Theme class applied correctly
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### 5. SPA Navigation (P0 — known bug)
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Navigate to non-interactive `/reference/` page, click sidebar link to interactive
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page. Verify x-ocaml elements initialize (shadow DOM, editors).
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Known bug: `innerHTML` assignment in SPA nav breaks custom element instantiation.
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Test expected to fail, documenting the bug.
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### 6. Page Health (P3)
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All notebook/interactive pages return 200, no console errors on load,
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required meta tags present.
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## File Structure
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```
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test/e2e/
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playwright.config.js
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package.json
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helpers.js — wait for cells, cell output extraction
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exam-notebooks.spec.js
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foundations-notebooks.spec.js
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onnx-inference.spec.js
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scrollycode-structure.spec.js
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spa-navigation.spec.js
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page-health.spec.js
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```
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## Key Helper Functions
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- `waitForCellCompletion(page, timeout)` — wait for all x-ocaml cells to render output
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- `getCellOutputs(page)` — extract stdout/stderr from all cells
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- `runClickCells(page)` — programmatically click Run on non-autorun cells
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- `waitForShadowDom(element)` — wait for web component initialization
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## Integration
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```makefile
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test-e2e:
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cd test/e2e && npx playwright test
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test: test-e2e
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```
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## Timeouts
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- Standard pages: 60s
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- ONNX pages: 120s
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- Foundations (all cells): 120s
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docs/plans/2026-03-09-e2e-test-suite.md
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docs/plans/2026-03-09-e2e-test-suite.md
···
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# E2E Test Suite Implementation Plan
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> **For Claude:** REQUIRED SUB-SKILL: Use superpowers:executing-plans to implement this plan task-by-task.
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**Goal:** Automated Playwright tests for the built site (`_site/`) verifying interactive notebooks, exam cells, ONNX inference, scrollycode structure, and SPA navigation.
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**Architecture:** `@playwright/test` framework serving `_site/` via built-in `webServer` config. Tests inspect x-ocaml shadow DOM for cell outputs, scrollycode HTML structure, and SPA navigation behavior. Helper module provides reusable wait/assertion utilities for the x-ocaml web component.
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**Tech Stack:** Playwright, Node.js, `@playwright/test`
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---
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### Task 1: Project Scaffolding
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**Files:**
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- Create: `test/e2e/package.json`
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- Create: `test/e2e/playwright.config.js`
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**Step 1: Create package.json**
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```json
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{
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"name": "site-e2e-tests",
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"version": "1.0.0",
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"private": true,
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"scripts": {
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"test": "npx playwright test",
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"test:headed": "npx playwright test --headed",
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"test:ui": "npx playwright test --ui",
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"install-browsers": "npx playwright install chromium"
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},
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"devDependencies": {
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"@playwright/test": "^1.40.0"
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}
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}
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```
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**Step 2: Create playwright.config.js**
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The site is pre-built in `_site/`. We serve it with `python3 -m http.server`.
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```js
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// @ts-check
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const { defineConfig } = require('@playwright/test');
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const path = require('path');
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module.exports = defineConfig({
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testDir: '.',
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testMatch: '*.spec.js',
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timeout: 120_000,
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retries: 0,
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workers: 1, // serial — cells share state within pages
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use: {
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baseURL: 'http://localhost:8770',
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// Generous navigation timeout for ONNX model loading
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navigationTimeout: 60_000,
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},
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webServer: {
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command: 'python3 -m http.server 8770',
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cwd: path.resolve(__dirname, '../../_site'),
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port: 8770,
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timeout: 10_000,
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reuseExistingServer: true,
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},
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reporter: [['list'], ['html', { open: 'never' }]],
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});
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```
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**Step 3: Install dependencies**
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Run: `cd test/e2e && npm install && npx playwright install chromium`
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**Step 4: Verify setup with a smoke test**
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Create a temporary `test/e2e/smoke.spec.js`:
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```js
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const { test, expect } = require('@playwright/test');
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test('site serves index page', async ({ page }) => {
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await page.goto('/');
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await expect(page).toHaveTitle(/.+/);
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});
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```
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Run: `cd test/e2e && npx playwright test smoke.spec.js`
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Expected: PASS
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**Step 5: Delete smoke test, commit**
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```bash
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rm test/e2e/smoke.spec.js
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git add test/e2e/package.json test/e2e/playwright.config.js test/e2e/package-lock.json
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git commit -m "test: scaffold Playwright E2E test suite for site"
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```
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---
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### Task 2: Helper Module
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**Files:**
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- Create: `test/e2e/helpers.js`
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This module provides utilities for interacting with x-ocaml shadow DOM elements.
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**Step 1: Write helpers.js**
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```js
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// @ts-check
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/**
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* Helpers for interacting with x-ocaml web component cells in Playwright.
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*
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* x-ocaml cells use shadow DOM. Outputs appear as .caml_stdout, .caml_stderr,
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* .caml_meta divs inside the shadow root. Editors are .cm-editor elements.
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*/
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/**
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* Wait for all x-ocaml cells on the page to have shadow DOM attached.
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* This means connectedCallback has fired.
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*/
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async function waitForCellsInitialized(page, { timeout = 30_000 } = {}) {
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await page.waitForFunction(
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() => {
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const cells = document.querySelectorAll('x-ocaml');
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if (cells.length === 0) return false;
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return Array.from(cells).every(
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(c) => c.getAttribute('mode') === 'hidden' || c.shadowRoot !== null
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);
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},
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{ timeout }
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);
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}
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/**
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* Wait for all auto-run cells (run-on="load") to produce output.
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* Also waits for test cells that auto-trigger after their exercise.
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*/
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async function waitForAutoRunComplete(page, { timeout = 60_000 } = {}) {
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await page.waitForFunction(
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(timeoutMs) => {
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const cells = document.querySelectorAll('x-ocaml');
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// Find cells that should have output
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const autoRunCells = Array.from(cells).filter((c) => {
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const mode = c.getAttribute('mode');
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if (mode === 'hidden') return false;
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// Auto-run cells, test cells (triggered by exercises), and interactive
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// cells with run-on="load" should all eventually have output
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return c.getAttribute('run-on') === 'load' || mode === 'test';
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});
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if (autoRunCells.length === 0) return true;
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return autoRunCells.every((c) => {
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const shadow = c.shadowRoot;
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if (!shadow) return false;
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return shadow.querySelector('.caml_stdout, .caml_stderr, .caml_meta') !== null;
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});
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},
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{ timeout },
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timeout
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);
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}
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+
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/**
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* Wait for ALL cells on the page to have output (after running them all).
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+
*/
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async function waitForAllCellsComplete(page, { timeout = 120_000 } = {}) {
167
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await page.waitForFunction(
168
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() => {
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const cells = document.querySelectorAll('x-ocaml');
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return Array.from(cells).every((c) => {
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const mode = c.getAttribute('mode');
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if (mode === 'hidden') return true;
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const shadow = c.shadowRoot;
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if (!shadow) return false;
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return shadow.querySelector('.caml_stdout, .caml_stderr, .caml_meta') !== null;
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+
});
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},
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{ timeout }
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);
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}
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+
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/**
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* Click the Run button on all non-auto-run cells, in order.
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* Waits briefly between each to respect cell chaining.
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*/
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async function runAllCells(page, { delayMs = 500 } = {}) {
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const cellCount = await page.evaluate(() => {
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return document.querySelectorAll('x-ocaml').length;
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});
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+
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for (let i = 0; i < cellCount; i++) {
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const needsClick = await page.evaluate((idx) => {
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const cell = document.querySelectorAll('x-ocaml')[idx];
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if (!cell) return false;
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const mode = cell.getAttribute('mode');
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if (mode === 'hidden') return false;
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if (cell.getAttribute('run-on') === 'load') return false;
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if (mode === 'test') return false; // test cells auto-trigger
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const shadow = cell.shadowRoot;
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if (!shadow) return false;
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// Already has output — skip
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if (shadow.querySelector('.caml_stdout, .caml_stderr, .caml_meta')) return false;
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return true;
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}, i);
205
+
206
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if (needsClick) {
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// Click the run button inside shadow DOM
208
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await page.evaluate((idx) => {
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const cell = document.querySelectorAll('x-ocaml')[idx];
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const shadow = cell.shadowRoot;
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const btn = shadow.querySelector('.run-button, button');
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if (btn) btn.click();
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}, i);
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await page.waitForTimeout(delayMs);
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}
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}
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}
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+
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/**
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* Get all cell outputs as an array of { mode, stdout, stderr, meta } objects.
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*/
222
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async function getCellOutputs(page) {
223
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return page.evaluate(() => {
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const cells = document.querySelectorAll('x-ocaml');
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return Array.from(cells).map((cell) => {
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const mode = cell.getAttribute('mode') || 'interactive';
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const dataFor = cell.getAttribute('data-for');
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const dataId = cell.getAttribute('data-id');
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const shadow = cell.shadowRoot;
230
+
231
+
if (!shadow) {
232
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return { mode, dataFor, dataId, stdout: '', stderr: '', meta: '' };
233
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}
234
+
235
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const getText = (sel) =>
236
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Array.from(shadow.querySelectorAll(sel))
237
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.map((el) => el.textContent)
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.join('\n');
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return {
241
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mode,
242
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dataFor,
243
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dataId,
244
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stdout: getText('.caml_stdout'),
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stderr: getText('.caml_stderr'),
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meta: getText('.caml_meta'),
247
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};
248
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});
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});
250
+
}
251
+
252
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/**
253
+
* Check that no cell has error output.
254
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* Returns array of { index, mode, stderr } for cells with errors.
255
+
*/
256
+
function findCellErrors(outputs) {
257
+
return outputs
258
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.map((o, i) => ({ index: i, ...o }))
259
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.filter(
260
+
(o) =>
261
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o.mode !== 'hidden' &&
262
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o.stderr &&
263
+
(o.stderr.includes('Error:') ||
264
+
o.stderr.includes('Unbound') ||
265
+
o.stderr.includes('Exception:'))
266
+
);
267
+
}
268
+
269
+
module.exports = {
270
+
waitForCellsInitialized,
271
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waitForAutoRunComplete,
272
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waitForAllCellsComplete,
273
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runAllCells,
274
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getCellOutputs,
275
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findCellErrors,
276
+
};
277
+
```
278
+
279
+
**Step 2: Commit**
280
+
281
+
```bash
282
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git add test/e2e/helpers.js
283
+
git commit -m "test: add x-ocaml cell helper utilities for E2E tests"
284
+
```
285
+
286
+
---
287
+
288
+
### Task 3: Exam Notebooks Tests
289
+
290
+
**Files:**
291
+
- Create: `test/e2e/exam-notebooks.spec.js`
292
+
293
+
**Step 1: Write the test**
294
+
295
+
These pages have exercise+test cell pairs. The exercise cells contain pre-filled
296
+
solutions, and test cells auto-run after them. All test cells should produce
297
+
stdout containing expected values and no errors.
298
+
299
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The x-ocaml elements on these pages do NOT have `run-on="load"`. The first
300
+
interactive cell needs to be run, which triggers the chain: exercise → test → next.
301
+
302
+
Key page structures:
303
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- `focs_2020_q2.html`: 10 cells (interactive, exercise/test pairs for parts a,b,d,e)
304
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- `focs_2024_q1.html`: 14 cells (interactive, exercise/test pairs for fold,map,filter,part_b,part_c + trailing interactives)
305
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- `focs_2025_q2.html`: 11 cells (interactive, exercise/test pairs for parts a,b,c,d,e)
306
+
307
+
```js
308
+
// @ts-check
309
+
const { test, expect } = require('@playwright/test');
310
+
const {
311
+
waitForCellsInitialized,
312
+
runAllCells,
313
+
waitForAllCellsComplete,
314
+
getCellOutputs,
315
+
findCellErrors,
316
+
} = require('./helpers');
317
+
318
+
const BASE = '/reference/odoc-interactive-extension';
319
+
320
+
test.describe('Exam Notebooks', () => {
321
+
test.describe('focs_2020_q2 — Simplified Mastermind', () => {
322
+
test('all test cells pass', async ({ page }) => {
323
+
await page.goto(`${BASE}/focs_2020_q2.html`);
324
+
await waitForCellsInitialized(page);
325
+
await runAllCells(page);
326
+
await waitForAllCellsComplete(page, { timeout: 120_000 });
327
+
328
+
const outputs = await getCellOutputs(page);
329
+
const testCells = outputs.filter((o) => o.mode === 'test');
330
+
331
+
// All 4 test cells should have run
332
+
expect(testCells.length).toBe(4);
333
+
334
+
// Each test cell should contain "All tests passed!" or successful assertions
335
+
for (const cell of testCells) {
336
+
expect(cell.stderr).toBe('');
337
+
expect(cell.stdout).not.toBe('');
338
+
}
339
+
340
+
// Part A: feedback function
341
+
const partA = testCells.find((c) => c.dataFor === 'part_a');
342
+
expect(partA.stdout).toContain('All tests passed');
343
+
344
+
// Part B: curried test function
345
+
const partB = testCells.find((c) => c.dataFor === 'part_b');
346
+
expect(partB.stdout).toContain('All tests passed');
347
+
348
+
// Part D: generate_lists
349
+
const partD = testCells.find((c) => c.dataFor === 'part_d');
350
+
expect(partD.stdout).toContain('All tests passed');
351
+
352
+
// Part E: valid_lists
353
+
const partE = testCells.find((c) => c.dataFor === 'part_e');
354
+
expect(partE.stdout).toContain('All tests passed');
355
+
356
+
// No errors anywhere
357
+
const errors = findCellErrors(outputs);
358
+
expect(errors).toEqual([]);
359
+
});
360
+
});
361
+
362
+
test.describe('focs_2024_q1 — Fold, Map, Filter', () => {
363
+
test('all test cells pass', async ({ page }) => {
364
+
await page.goto(`${BASE}/focs_2024_q1.html`);
365
+
await waitForCellsInitialized(page);
366
+
await runAllCells(page);
367
+
await waitForAllCellsComplete(page, { timeout: 120_000 });
368
+
369
+
const outputs = await getCellOutputs(page);
370
+
const testCells = outputs.filter((o) => o.mode === 'test');
371
+
372
+
expect(testCells.length).toBe(5);
373
+
374
+
// fold tests
375
+
const fold = testCells.find((c) => c.dataFor === 'fold');
376
+
expect(fold.stdout).toContain('15');
377
+
expect(fold.stdout).toContain('120');
378
+
379
+
// map tests
380
+
const map = testCells.find((c) => c.dataFor === 'map');
381
+
expect(map.stdout).toContain('2; 4; 6');
382
+
383
+
// filter tests
384
+
const filter = testCells.find((c) => c.dataFor === 'filter');
385
+
expect(filter.stdout).toContain('2; 4; 6');
386
+
387
+
// No errors
388
+
const errors = findCellErrors(outputs);
389
+
expect(errors).toEqual([]);
390
+
});
391
+
});
392
+
393
+
test.describe('focs_2025_q2 — Polish Notation', () => {
394
+
test('all test cells pass', async ({ page }) => {
395
+
await page.goto(`${BASE}/focs_2025_q2.html`);
396
+
await waitForCellsInitialized(page);
397
+
await runAllCells(page);
398
+
await waitForAllCellsComplete(page, { timeout: 120_000 });
399
+
400
+
const outputs = await getCellOutputs(page);
401
+
const testCells = outputs.filter((o) => o.mode === 'test');
402
+
403
+
expect(testCells.length).toBe(4);
404
+
405
+
// Part B: eval function
406
+
const partB = testCells.find((c) => c.dataFor === 'part_b');
407
+
expect(partB.stdout).toContain('42');
408
+
expect(partB.stdout).toContain('60');
409
+
410
+
// Part D: reduce function
411
+
const partD = testCells.find((c) => c.dataFor === 'part_d');
412
+
expect(partD.stdout).toContain('60');
413
+
414
+
// Part E: reduce_all
415
+
const partE = testCells.find((c) => c.dataFor === 'part_e');
416
+
expect(partE.stdout).toContain('60');
417
+
418
+
// No errors
419
+
const errors = findCellErrors(outputs);
420
+
expect(errors).toEqual([]);
421
+
});
422
+
});
423
+
});
424
+
```
425
+
426
+
**Step 2: Run tests**
427
+
428
+
Run: `cd test/e2e && npx playwright test exam-notebooks.spec.js`
429
+
Expected: All 3 tests PASS (if exam solutions are correct in the built site)
430
+
431
+
**Step 3: Commit**
432
+
433
+
```bash
434
+
git add test/e2e/exam-notebooks.spec.js
435
+
git commit -m "test: add exam notebook E2E tests (mastermind, fold/map/filter, polish notation)"
436
+
```
437
+
438
+
---
439
+
440
+
### Task 4: Foundations Notebooks Tests
441
+
442
+
**Files:**
443
+
- Create: `test/e2e/foundations-notebooks.spec.js`
444
+
445
+
**Step 1: Write the test**
446
+
447
+
Test all 11 foundations notebooks. For each: load page, run all cells, verify
448
+
no errors. These are demo cells — we just verify they execute successfully.
449
+
450
+
```js
451
+
// @ts-check
452
+
const { test, expect } = require('@playwright/test');
453
+
const {
454
+
waitForCellsInitialized,
455
+
runAllCells,
456
+
waitForAllCellsComplete,
457
+
getCellOutputs,
458
+
findCellErrors,
459
+
} = require('./helpers');
460
+
461
+
const BASE = '/notebooks/foundations';
462
+
463
+
const NOTEBOOKS = [
464
+
{ file: 'foundations1.html', name: 'Lecture 1: Introduction' },
465
+
{ file: 'foundations2.html', name: 'Lecture 2: Recursion' },
466
+
{ file: 'foundations3.html', name: 'Lecture 3: Lists' },
467
+
{ file: 'foundations4.html', name: 'Lecture 4: More on Lists' },
468
+
{ file: 'foundations5.html', name: 'Lecture 5: Sorting' },
469
+
{ file: 'foundations6.html', name: 'Lecture 6: Datatypes and Trees' },
470
+
{ file: 'foundations7.html', name: 'Lecture 7: Dictionaries' },
471
+
{ file: 'foundations8.html', name: 'Lecture 8: Functions as Values' },
472
+
{ file: 'foundations9.html', name: 'Lecture 9: Sequences' },
473
+
{ file: 'foundations10.html', name: 'Lecture 10: Queues' },
474
+
{ file: 'foundations11.html', name: 'Lecture 11: Procedural Programming' },
475
+
];
476
+
477
+
for (const nb of NOTEBOOKS) {
478
+
test.describe(nb.name, () => {
479
+
test(`all cells execute without errors`, async ({ page }) => {
480
+
await page.goto(`${BASE}/${nb.file}`);
481
+
await waitForCellsInitialized(page);
482
+
await runAllCells(page, { delayMs: 1000 });
483
+
await waitForAllCellsComplete(page, { timeout: 120_000 });
484
+
485
+
const outputs = await getCellOutputs(page);
486
+
const errors = findCellErrors(outputs);
487
+
488
+
if (errors.length > 0) {
489
+
const details = errors
490
+
.map((e) => ` Cell ${e.index} (${e.mode}): ${e.stderr.slice(0, 200)}`)
491
+
.join('\n');
492
+
expect(errors, `Cells with errors:\n${details}`).toEqual([]);
493
+
}
494
+
});
495
+
});
496
+
}
497
+
```
498
+
499
+
**Step 2: Run tests**
500
+
501
+
Run: `cd test/e2e && npx playwright test foundations-notebooks.spec.js`
502
+
Expected: All 11 tests PASS
503
+
504
+
**Step 3: Commit**
505
+
506
+
```bash
507
+
git add test/e2e/foundations-notebooks.spec.js
508
+
git commit -m "test: add foundations notebook E2E tests (11 lectures, no-error execution)"
509
+
```
510
+
511
+
---
512
+
513
+
### Task 5: ONNX Inference Tests
514
+
515
+
**Files:**
516
+
- Create: `test/e2e/onnx-inference.spec.js`
517
+
518
+
**Step 1: Write the test**
519
+
520
+
These pages load ONNX Runtime and run ML inference in the browser. They need
521
+
extended timeouts for model download. The sentiment page should classify the
522
+
default positive text as POSITIVE. The add page should produce [5, 7, 9].
523
+
524
+
```js
525
+
// @ts-check
526
+
const { test, expect } = require('@playwright/test');
527
+
const {
528
+
waitForCellsInitialized,
529
+
runAllCells,
530
+
waitForAllCellsComplete,
531
+
getCellOutputs,
532
+
findCellErrors,
533
+
} = require('./helpers');
534
+
535
+
const BASE = '/reference/onnxrt';
536
+
537
+
test.describe('ONNX Inference', () => {
538
+
test('sentiment analysis classifies positive text correctly', async ({
539
+
page,
540
+
}) => {
541
+
test.setTimeout(180_000); // model download can be slow
542
+
543
+
await page.goto(`${BASE}/sentiment_example.html`);
544
+
await waitForCellsInitialized(page, { timeout: 60_000 });
545
+
await runAllCells(page, { delayMs: 2000 });
546
+
await waitForAllCellsComplete(page, { timeout: 180_000 });
547
+
548
+
const outputs = await getCellOutputs(page);
549
+
const errors = findCellErrors(outputs);
550
+
expect(errors).toEqual([]);
551
+
552
+
// The page should show a POSITIVE classification somewhere in the output
553
+
const allStdout = outputs.map((o) => o.stdout).join('\n');
554
+
expect(allStdout.toUpperCase()).toContain('POSITIVE');
555
+
});
556
+
557
+
test('tensor addition produces correct result', async ({ page }) => {
558
+
test.setTimeout(120_000);
559
+
560
+
await page.goto(`${BASE}/add_example.html`);
561
+
await waitForCellsInitialized(page, { timeout: 60_000 });
562
+
await runAllCells(page, { delayMs: 2000 });
563
+
await waitForAllCellsComplete(page, { timeout: 120_000 });
564
+
565
+
const outputs = await getCellOutputs(page);
566
+
const errors = findCellErrors(outputs);
567
+
expect(errors).toEqual([]);
568
+
569
+
// Output should contain the sum [5, 7, 9] in some format
570
+
const allStdout = outputs.map((o) => o.stdout).join('\n');
571
+
const hasExpectedSum =
572
+
allStdout.includes('5') &&
573
+
allStdout.includes('7') &&
574
+
allStdout.includes('9');
575
+
expect(hasExpectedSum, 'Expected tensor sum values 5, 7, 9 in output').toBe(
576
+
true
577
+
);
578
+
});
579
+
});
580
+
```
581
+
582
+
**Step 2: Run tests**
583
+
584
+
Run: `cd test/e2e && npx playwright test onnx-inference.spec.js`
585
+
Expected: PASS (may be slow due to model download)
586
+
587
+
**Step 3: Commit**
588
+
589
+
```bash
590
+
git add test/e2e/onnx-inference.spec.js
591
+
git commit -m "test: add ONNX inference E2E tests (sentiment analysis, tensor addition)"
592
+
```
593
+
594
+
---
595
+
596
+
### Task 6: Scrollycode Structure Tests
597
+
598
+
**Files:**
599
+
- Create: `test/e2e/scrollycode-structure.spec.js`
600
+
601
+
**Step 1: Write the test**
602
+
603
+
Static HTML structure validation — no JS execution needed. Check that scrollycode
604
+
pages have the right DOM structure: container, steps, code slots, progress pips.
605
+
606
+
All three scrollycode pages have 6 steps each (data-step-index 0-5).
607
+
608
+
```js
609
+
// @ts-check
610
+
const { test, expect } = require('@playwright/test');
611
+
612
+
const BASE = '/reference/odoc-scrollycode-extension';
613
+
614
+
const PAGES = [
615
+
{ file: 'warm_parser.html', title: 'Building a JSON Parser', steps: 6 },
616
+
{ file: 'dark_repl.html', title: 'Building a REPL', steps: 6 },
617
+
{
618
+
file: 'notebook_testing.html',
619
+
title: 'Building a Test Framework',
620
+
steps: 6,
621
+
},
622
+
];
623
+
624
+
for (const pg of PAGES) {
625
+
test.describe(`Scrollycode: ${pg.title}`, () => {
626
+
test('has correct HTML structure', async ({ page }) => {
627
+
await page.goto(`${BASE}/${pg.file}`);
628
+
629
+
// Container exists
630
+
const container = page.locator('.sc-container');
631
+
await expect(container).toBeVisible();
632
+
633
+
// Correct number of steps
634
+
const steps = page.locator('.sc-step');
635
+
await expect(steps).toHaveCount(pg.steps);
636
+
637
+
// Each step has a code slot with content
638
+
for (let i = 0; i < pg.steps; i++) {
639
+
const step = steps.nth(i);
640
+
const codeSlot = step.locator('.sc-code-slot');
641
+
await expect(codeSlot).toBeAttached();
642
+
643
+
// Code slot should have at least one line
644
+
const lines = codeSlot.locator('.sc-line');
645
+
const lineCount = await lines.count();
646
+
expect(lineCount, `Step ${i} should have code lines`).toBeGreaterThan(
647
+
0
648
+
);
649
+
}
650
+
651
+
// Progress pips exist and match step count
652
+
const progressPips = page.locator('.sc-progress .sc-pip');
653
+
await expect(progressPips).toHaveCount(pg.steps);
654
+
655
+
// Step badge exists with correct format
656
+
const badge = page.locator('.sc-step-badge');
657
+
await expect(badge).toBeVisible();
658
+
const badgeText = await badge.textContent();
659
+
expect(badgeText).toMatch(/\d+ \/ \d+/);
660
+
});
661
+
662
+
test('each step has a title', async ({ page }) => {
663
+
await page.goto(`${BASE}/${pg.file}`);
664
+
665
+
const steps = page.locator('.sc-step');
666
+
for (let i = 0; i < pg.steps; i++) {
667
+
const step = steps.nth(i);
668
+
const stepNumber = step.locator('.sc-step-number');
669
+
const text = await stepNumber.textContent();
670
+
expect(text.trim()).not.toBe('');
671
+
}
672
+
});
673
+
});
674
+
}
675
+
```
676
+
677
+
**Step 2: Run tests**
678
+
679
+
Run: `cd test/e2e && npx playwright test scrollycode-structure.spec.js`
680
+
Expected: All 6 tests PASS
681
+
682
+
**Step 3: Commit**
683
+
684
+
```bash
685
+
git add test/e2e/scrollycode-structure.spec.js
686
+
git commit -m "test: add scrollycode HTML structure validation tests"
687
+
```
688
+
689
+
---
690
+
691
+
### Task 7: SPA Navigation Test
692
+
693
+
**Files:**
694
+
- Create: `test/e2e/spa-navigation.spec.js`
695
+
696
+
**Step 1: Write the test**
697
+
698
+
This tests the known bug where navigating via sidebar from a non-interactive page
699
+
to an interactive page fails to initialize x-ocaml elements.
700
+
701
+
Mark the test as `test.fail()` to document the known bug — it will pass in the
702
+
test runner (Playwright treats expected failures as passing).
703
+
704
+
```js
705
+
// @ts-check
706
+
const { test, expect } = require('@playwright/test');
707
+
const { waitForCellsInitialized } = require('./helpers');
708
+
709
+
test.describe('SPA Navigation', () => {
710
+
test('direct load of interactive page works', async ({ page }) => {
711
+
// Baseline: direct navigation should work
712
+
await page.goto('/reference/odoc-interactive-extension/focs_2020_q2.html');
713
+
await waitForCellsInitialized(page);
714
+
715
+
const hasShadowDom = await page.evaluate(() => {
716
+
const cells = document.querySelectorAll('x-ocaml');
717
+
return Array.from(cells).some(
718
+
(c) => c.getAttribute('mode') !== 'hidden' && c.shadowRoot !== null
719
+
);
720
+
});
721
+
expect(hasShadowDom).toBe(true);
722
+
});
723
+
724
+
test('sidebar navigation to interactive page initializes cells', async ({
725
+
page,
726
+
}) => {
727
+
// Known bug: SPA navigation uses innerHTML which breaks custom element
728
+
// instantiation. Mark as expected failure.
729
+
test.fail();
730
+
731
+
// Start on a non-interactive page within /reference/
732
+
await page.goto('/reference/odoc-interactive-extension/index.html');
733
+
734
+
// Wait for sidebar to render
735
+
await page.waitForSelector('#sidebar-content a[data-nav]');
736
+
737
+
// Find and click a sidebar link to an interactive page
738
+
const link = page.locator(
739
+
'a[data-nav*="focs_2020_q2.html"]'
740
+
);
741
+
742
+
// If the link isn't directly visible, try the index page link
743
+
const linkCount = await link.count();
744
+
if (linkCount > 0) {
745
+
await link.first().click();
746
+
} else {
747
+
// Navigate via URL bar to a non-interactive ref page, then use sidebar
748
+
await page.goto('/reference/odoc/index.html');
749
+
await page.waitForSelector('#sidebar-content a[data-nav]');
750
+
// Click any link to an interactive extension page
751
+
const anyLink = page.locator(
752
+
'a[data-nav*="odoc-interactive-extension/focs"]'
753
+
);
754
+
await anyLink.first().click();
755
+
}
756
+
757
+
// Wait for SPA navigation to complete
758
+
await page.waitForTimeout(3000);
759
+
760
+
// Check if x-ocaml cells initialized — this is the known bug
761
+
const hasShadowDom = await page.evaluate(() => {
762
+
const cells = document.querySelectorAll('x-ocaml');
763
+
if (cells.length === 0) return false;
764
+
return Array.from(cells).some(
765
+
(c) => c.getAttribute('mode') !== 'hidden' && c.shadowRoot !== null
766
+
);
767
+
});
768
+
expect(hasShadowDom).toBe(true);
769
+
});
770
+
});
771
+
```
772
+
773
+
**Step 2: Run tests**
774
+
775
+
Run: `cd test/e2e && npx playwright test spa-navigation.spec.js`
776
+
Expected: Both tests PASS (the second one passes because `test.fail()` expects it to fail)
777
+
778
+
**Step 3: Commit**
779
+
780
+
```bash
781
+
git add test/e2e/spa-navigation.spec.js
782
+
git commit -m "test: add SPA navigation test (documents known x-ocaml init bug)"
783
+
```
784
+
785
+
---
786
+
787
+
### Task 8: Page Health Tests
788
+
789
+
**Files:**
790
+
- Create: `test/e2e/page-health.spec.js`
791
+
792
+
**Step 1: Write the test**
793
+
794
+
Verify that all key interactive pages load without 404s or console errors, and
795
+
that required meta tags are present for x-ocaml pages.
796
+
797
+
```js
798
+
// @ts-check
799
+
const { test, expect } = require('@playwright/test');
800
+
801
+
const INTERACTIVE_PAGES = [
802
+
'/reference/odoc-interactive-extension/focs_2020_q2.html',
803
+
'/reference/odoc-interactive-extension/focs_2024_q1.html',
804
+
'/reference/odoc-interactive-extension/focs_2025_q2.html',
805
+
'/reference/odoc-interactive-extension/demo1.html',
806
+
'/reference/odoc-interactive-extension/demo_widgets.html',
807
+
'/reference/odoc-interactive-extension/demo3_oxcaml.html',
808
+
'/reference/onnxrt/sentiment_example.html',
809
+
'/reference/onnxrt/add_example.html',
810
+
'/notebooks/foundations/foundations1.html',
811
+
'/notebooks/foundations/foundations3.html',
812
+
'/notebooks/foundations/foundations5.html',
813
+
'/notebooks/oxcaml/local.html',
814
+
'/notebooks/interactive_map.html',
815
+
];
816
+
817
+
const SCROLLYCODE_PAGES = [
818
+
'/reference/odoc-scrollycode-extension/warm_parser.html',
819
+
'/reference/odoc-scrollycode-extension/dark_repl.html',
820
+
'/reference/odoc-scrollycode-extension/notebook_testing.html',
821
+
];
822
+
823
+
const STATIC_PAGES = [
824
+
'/',
825
+
'/blog/',
826
+
'/notebooks/',
827
+
'/projects/',
828
+
'/reference/',
829
+
];
830
+
831
+
test.describe('Page Health', () => {
832
+
for (const url of [...INTERACTIVE_PAGES, ...SCROLLYCODE_PAGES, ...STATIC_PAGES]) {
833
+
test(`${url} loads without errors`, async ({ page }) => {
834
+
const errors = [];
835
+
page.on('pageerror', (err) => errors.push(err.message));
836
+
837
+
const response = await page.goto(url);
838
+
expect(response.status()).toBe(200);
839
+
840
+
// Allow page to settle
841
+
await page.waitForTimeout(1000);
842
+
843
+
// No uncaught page errors
844
+
expect(errors, `Page errors on ${url}: ${errors.join(', ')}`).toEqual([]);
845
+
});
846
+
}
847
+
848
+
for (const url of INTERACTIVE_PAGES) {
849
+
test(`${url} has x-ocaml meta tags`, async ({ page }) => {
850
+
await page.goto(url);
851
+
852
+
// Should have x-ocaml-universe meta tag
853
+
const universe = await page.evaluate(() => {
854
+
const meta = document.querySelector('meta[name="x-ocaml-universe"]');
855
+
return meta ? meta.getAttribute('content') : null;
856
+
});
857
+
expect(universe).not.toBeNull();
858
+
expect(universe).toBeTruthy();
859
+
860
+
// Should have x-ocaml elements
861
+
const cellCount = await page.evaluate(
862
+
() => document.querySelectorAll('x-ocaml').length
863
+
);
864
+
expect(cellCount).toBeGreaterThan(0);
865
+
});
866
+
}
867
+
});
868
+
```
869
+
870
+
**Step 2: Run tests**
871
+
872
+
Run: `cd test/e2e && npx playwright test page-health.spec.js`
873
+
Expected: All tests PASS
874
+
875
+
**Step 3: Commit**
876
+
877
+
```bash
878
+
git add test/e2e/page-health.spec.js
879
+
git commit -m "test: add page health checks (load status, console errors, meta tags)"
880
+
```
881
+
882
+
---
883
+
884
+
### Task 9: Integration and Final Verification
885
+
886
+
**Step 1: Run the full suite**
887
+
888
+
Run: `cd test/e2e && npx playwright test`
889
+
Expected: All tests pass. Review any failures and fix.
890
+
891
+
**Step 2: Add a top-level Makefile target (optional)**
892
+
893
+
If there's a root-level Makefile, add:
894
+
```makefile
895
+
test-e2e:
896
+
cd test/e2e && npm test
897
+
898
+
test: test-e2e
899
+
```
900
+
901
+
Otherwise, document in the design doc that the command is `cd test/e2e && npx playwright test`.
902
+
903
+
**Step 3: Final commit**
904
+
905
+
```bash
906
+
git add -A
907
+
git commit -m "test: complete E2E test suite for site notebooks and interactive features"
908
+
```
+319
test/e2e/exam-notebooks.spec.js
+319
test/e2e/exam-notebooks.spec.js
···
1
+
// @ts-check
2
+
const { test, expect } = require('@playwright/test');
3
+
const { waitForCellsInitialized, getCellOutputs } = require('./helpers');
4
+
5
+
const BASE = '/reference/odoc-interactive-extension';
6
+
7
+
/**
8
+
* Set the code content of an exercise cell by index.
9
+
* Uses CodeMirror's dispatch API via .cm-content.cmView.view.
10
+
*/
11
+
async function setExerciseCode(page, cellIndex, code) {
12
+
await page.evaluate(
13
+
({ idx, code }) => {
14
+
const cell = document.querySelectorAll('x-ocaml')[idx];
15
+
const shadow = cell.shadowRoot;
16
+
const cmContent = shadow.querySelector('.cm-content');
17
+
const view = cmContent?.cmView?.view;
18
+
if (view) {
19
+
view.dispatch({
20
+
changes: { from: 0, to: view.state.doc.length, insert: code },
21
+
});
22
+
}
23
+
},
24
+
{ idx: cellIndex, code }
25
+
);
26
+
}
27
+
28
+
/**
29
+
* Click the Run button on a specific cell.
30
+
*/
31
+
async function clickRun(page, cellIndex) {
32
+
await page.evaluate((idx) => {
33
+
const cell = document.querySelectorAll('x-ocaml')[idx];
34
+
const shadow = cell.shadowRoot;
35
+
const btn =
36
+
shadow.querySelector('button[aria-label="Run"]') ||
37
+
shadow.querySelector('button[title="Run"]') ||
38
+
shadow.querySelector('button');
39
+
if (btn) btn.click();
40
+
}, cellIndex);
41
+
}
42
+
43
+
/**
44
+
* Wait for a specific cell to have output (with timeout that doesn't throw).
45
+
*/
46
+
async function waitForCellOutput(page, cellIndex, timeout = 30_000) {
47
+
try {
48
+
await page.waitForFunction(
49
+
(idx) => {
50
+
const cell = document.querySelectorAll('x-ocaml')[idx];
51
+
if (!cell) return false;
52
+
const shadow = cell.shadowRoot;
53
+
if (!shadow) return false;
54
+
return (
55
+
shadow.querySelector('.caml_stdout, .caml_stderr, .caml_meta') !==
56
+
null
57
+
);
58
+
},
59
+
cellIndex,
60
+
{ timeout }
61
+
);
62
+
return true;
63
+
} catch {
64
+
return false;
65
+
}
66
+
}
67
+
68
+
// Solutions for focs_2020_q2
69
+
const MASTERMIND_SOLUTIONS = {
70
+
part_a: `let feedback (a : colour list) (b : colour list) : int =
71
+
if List.length a <> List.length b then raise SizeMismatch
72
+
else List.fold_left2 (fun acc x y -> if x = y then acc + 1 else acc) 0 a b`,
73
+
part_b: `let test : colour list -> int = feedback [Blue; Green; Red]`,
74
+
part_d: `let rec generate_lists (n : int) : colour list list =
75
+
if n = 0 then [[]]
76
+
else
77
+
let rest = generate_lists (n - 1) in
78
+
List.concat_map (fun l -> [Red :: l; Green :: l; Blue :: l]) rest`,
79
+
part_e: `let valid_lists (b : colour list) (x : int) : colour list list =
80
+
let n = List.length b in
81
+
let all = generate_lists n in
82
+
List.filter (fun a -> feedback a b = x) all`,
83
+
};
84
+
85
+
// Solutions for focs_2024_q1
86
+
const FOLD_MAP_FILTER_SOLUTIONS = {
87
+
fold: `let rec fold f acc = function
88
+
| [] -> acc
89
+
| x :: xs -> fold f (f acc x) xs`,
90
+
map: `let map f xs = List.rev (fold (fun acc x -> f x :: acc) [] xs)`,
91
+
filter: `let filter p xs = List.rev (fold (fun acc x -> if p x then x :: acc else acc) [] xs)`,
92
+
part_b: `type stats = { mean : float; std : float }
93
+
94
+
let compute_stats marks =
95
+
let non_zero = filter (fun x -> x <> 0) marks in
96
+
match non_zero with
97
+
| [] -> None
98
+
| _ ->
99
+
let n = float_of_int (fold (fun acc _ -> acc + 1) 0 non_zero) in
100
+
let sum = float_of_int (fold ( + ) 0 non_zero) in
101
+
let mean = sum /. n in
102
+
let sq_diff = fold (fun acc x -> acc +. (float_of_int x -. mean) ** 2.0) 0.0 non_zero in
103
+
let std = sqrt (sq_diff /. n) in
104
+
Some { mean; std }`,
105
+
part_c: `let rec nth (n : int) (l : 'a list) : 'a option =
106
+
match l with
107
+
| [] -> None
108
+
| x :: xs -> if n = 0 then Some x else nth (n - 1) xs
109
+
110
+
let qmean (q : int) (rs : marks list) : float =
111
+
let marks = filter (fun x -> x <> 0) (map (fun r -> match nth q r with Some v -> v | None -> 0) rs) in
112
+
let n = float_of_int (fold (fun acc _ -> acc + 1) 0 marks) in
113
+
let sum = float_of_int (fold ( + ) 0 marks) in
114
+
sum /. n
115
+
116
+
let qstd (q : int) (rs : marks list) : float =
117
+
let marks = filter (fun x -> x <> 0) (map (fun r -> match nth q r with Some v -> v | None -> 0) rs) in
118
+
let n = float_of_int (fold (fun acc _ -> acc + 1) 0 marks) in
119
+
let sum = float_of_int (fold ( + ) 0 marks) in
120
+
let mean = sum /. n in
121
+
let sq_diff = fold (fun acc x -> acc +. (float_of_int x -. mean) ** 2.0) 0.0 marks in
122
+
sqrt (sq_diff /. n)`,
123
+
};
124
+
125
+
// Solutions for focs_2025_q2
126
+
// Note: part_c defines type t, and cell 6 (interactive) provides a type hint.
127
+
// reduce returns t list (not option), reduce_all returns t list.
128
+
const POLISH_NOTATION_SOLUTIONS = {
129
+
part_a: `let example = Mul (Add (Number 1, Number 4), Add (Number 10, Number 2))`,
130
+
part_b: `let rec eval = function
131
+
| Number n -> n
132
+
| Add (a, b) -> eval a + eval b
133
+
| Mul (a, b) -> eval a * eval b`,
134
+
part_c: `type t = Plus | Times | Num of int`,
135
+
part_d: `let rec reduce (tokens : t list) : t list =
136
+
match tokens with
137
+
| Plus :: Num a :: Num b :: rest -> Num (a + b) :: rest
138
+
| Times :: Num a :: Num b :: rest -> Num (a * b) :: rest
139
+
| x :: rest -> x :: reduce rest
140
+
| [] -> []`,
141
+
part_e: `let rec reduce_all (tokens : t list) : t list =
142
+
match tokens with
143
+
| [Num _] -> tokens
144
+
| _ -> reduce_all (reduce tokens)`,
145
+
};
146
+
147
+
/**
148
+
* Fill solutions into exercise cells and run them, waiting for test results.
149
+
*
150
+
* @param {import('@playwright/test').Page} page
151
+
* @param {Array<{exerciseIndex: number, testIndex: number, id: string}>} parts
152
+
* @param {Record<string, string>} solutions
153
+
*/
154
+
async function fillAndRunExam(page, parts, solutions) {
155
+
// Fill all exercise cells first
156
+
for (const part of parts) {
157
+
await setExerciseCode(page, part.exerciseIndex, solutions[part.id]);
158
+
}
159
+
160
+
// Run each exercise cell and wait for its test to complete
161
+
for (const part of parts) {
162
+
await clickRun(page, part.exerciseIndex);
163
+
// Wait for exercise output
164
+
await waitForCellOutput(page, part.exerciseIndex, 30_000);
165
+
// Wait for the test cell to auto-trigger and complete
166
+
if (part.testIndex !== null) {
167
+
await waitForCellOutput(page, part.testIndex, 30_000);
168
+
}
169
+
}
170
+
}
171
+
172
+
test.describe('Exam Notebooks', () => {
173
+
test.describe('focs_2020_q2 — Simplified Mastermind', () => {
174
+
test('all test cells pass with correct solutions', async ({ page }) => {
175
+
await page.goto(`${BASE}/focs_2020_q2.html`);
176
+
await waitForCellsInitialized(page);
177
+
// Wait for cell 0 (type definitions) to auto-run
178
+
await waitForCellOutput(page, 0);
179
+
180
+
// Cell layout: 0=interactive(types), 1=ex(a), 2=test(a), 3=ex(b), 4=test(b),
181
+
// 5=interactive(test ref), 6=ex(d), 7=test(d), 8=ex(e), 9=test(e)
182
+
await fillAndRunExam(
183
+
page,
184
+
[
185
+
{ exerciseIndex: 1, testIndex: 2, id: 'part_a' },
186
+
{ exerciseIndex: 3, testIndex: 4, id: 'part_b' },
187
+
{ exerciseIndex: 6, testIndex: 7, id: 'part_d' },
188
+
{ exerciseIndex: 8, testIndex: 9, id: 'part_e' },
189
+
],
190
+
MASTERMIND_SOLUTIONS
191
+
);
192
+
193
+
const outputs = await getCellOutputs(page);
194
+
const testCells = outputs.filter((o) => o.mode === 'test');
195
+
expect(testCells.length).toBe(4);
196
+
197
+
for (const cell of testCells) {
198
+
expect(
199
+
cell.stderr,
200
+
`Test for=${cell.dataFor} had errors: ${cell.stderr}`
201
+
).toBe('');
202
+
expect(cell.stdout).toContain('All tests passed');
203
+
}
204
+
});
205
+
});
206
+
207
+
test.describe('focs_2024_q1 — Fold, Map, Filter', () => {
208
+
test('all test cells pass with correct solutions', async ({ page }) => {
209
+
await page.goto(`${BASE}/focs_2024_q1.html`);
210
+
await waitForCellsInitialized(page);
211
+
await waitForCellOutput(page, 0);
212
+
213
+
// Cell layout (14 cells, indices 0-13):
214
+
// 0=interactive, 1=ex(fold), 2=test(fold), 3=ex(map), 4=test(map),
215
+
// 5=ex(filter), 6=test(filter), 7=interactive(data), 8=ex(part_b),
216
+
// 9=test(part_b), 10=ex(part_c), 11=test(part_c), 12=interactive, 13=interactive
217
+
await fillAndRunExam(
218
+
page,
219
+
[
220
+
{ exerciseIndex: 1, testIndex: 2, id: 'fold' },
221
+
{ exerciseIndex: 3, testIndex: 4, id: 'map' },
222
+
{ exerciseIndex: 5, testIndex: 6, id: 'filter' },
223
+
],
224
+
FOLD_MAP_FILTER_SOLUTIONS
225
+
);
226
+
227
+
// Run cell 7 (interactive data definitions) before part_b
228
+
await clickRun(page, 7);
229
+
await waitForCellOutput(page, 7);
230
+
231
+
await fillAndRunExam(
232
+
page,
233
+
[
234
+
{ exerciseIndex: 8, testIndex: 9, id: 'part_b' },
235
+
{ exerciseIndex: 10, testIndex: 11, id: 'part_c' },
236
+
],
237
+
FOLD_MAP_FILTER_SOLUTIONS
238
+
);
239
+
240
+
const outputs = await getCellOutputs(page);
241
+
const testCells = outputs.filter((o) => o.mode === 'test');
242
+
expect(testCells.length).toBe(5);
243
+
244
+
const fold = testCells.find((c) => c.dataFor === 'fold');
245
+
expect(fold.stdout).toContain('15');
246
+
expect(fold.stdout).toContain('120');
247
+
248
+
const map = testCells.find((c) => c.dataFor === 'map');
249
+
expect(map.stdout).toContain('2; 4; 6');
250
+
251
+
const filter = testCells.find((c) => c.dataFor === 'filter');
252
+
expect(filter.stdout).toContain('2; 4; 6');
253
+
254
+
for (const cell of testCells) {
255
+
expect(
256
+
cell.stderr,
257
+
`Test for=${cell.dataFor} had errors: ${cell.stderr}`
258
+
).toBe('');
259
+
}
260
+
});
261
+
});
262
+
263
+
test.describe('focs_2025_q2 — Polish Notation', () => {
264
+
test('all test cells pass with correct solutions', async ({ page }) => {
265
+
await page.goto(`${BASE}/focs_2025_q2.html`);
266
+
await waitForCellsInitialized(page);
267
+
await waitForCellOutput(page, 0);
268
+
269
+
// Cell layout (11 cells, indices 0-10):
270
+
// 0=interactive(type expr), 1=ex(a), 2=test(a), 3=ex(b), 4=test(b),
271
+
// 5=ex(c), 6=interactive(type t hint), 7=ex(d), 8=test(d),
272
+
// 9=ex(e), 10=test(e)
273
+
await fillAndRunExam(
274
+
page,
275
+
[
276
+
{ exerciseIndex: 1, testIndex: 2, id: 'part_a' },
277
+
{ exerciseIndex: 3, testIndex: 4, id: 'part_b' },
278
+
{ exerciseIndex: 5, testIndex: null, id: 'part_c' },
279
+
],
280
+
POLISH_NOTATION_SOLUTIONS
281
+
);
282
+
283
+
// Run cell 6 (interactive type hint) before part_d
284
+
await clickRun(page, 6);
285
+
await waitForCellOutput(page, 6);
286
+
287
+
// Now fill and run parts d and e
288
+
await fillAndRunExam(
289
+
page,
290
+
[
291
+
{ exerciseIndex: 7, testIndex: 8, id: 'part_d' },
292
+
{ exerciseIndex: 9, testIndex: 10, id: 'part_e' },
293
+
],
294
+
POLISH_NOTATION_SOLUTIONS
295
+
);
296
+
297
+
const outputs = await getCellOutputs(page);
298
+
const testCells = outputs.filter((o) => o.mode === 'test');
299
+
expect(testCells.length).toBe(4);
300
+
301
+
const partB = testCells.find((c) => c.dataFor === 'part_b');
302
+
expect(partB.stdout).toContain('42');
303
+
expect(partB.stdout).toContain('60');
304
+
305
+
const partD = testCells.find((c) => c.dataFor === 'part_d');
306
+
expect(partD.stdout).toContain('60');
307
+
308
+
const partE = testCells.find((c) => c.dataFor === 'part_e');
309
+
expect(partE.stdout).toContain('60');
310
+
311
+
for (const cell of testCells) {
312
+
expect(
313
+
cell.stderr,
314
+
`Test for=${cell.dataFor} had errors: ${cell.stderr}`
315
+
).toBe('');
316
+
}
317
+
});
318
+
});
319
+
});
+133
test/e2e/foundations-notebooks.spec.js
+133
test/e2e/foundations-notebooks.spec.js
···
1
+
// @ts-check
2
+
const { test, expect } = require('@playwright/test');
3
+
const {
4
+
waitForCellsInitialized,
5
+
getCellOutputs,
6
+
findCellErrors,
7
+
} = require('./helpers');
8
+
9
+
const BASE = '/notebooks/foundations';
10
+
11
+
const NOTEBOOKS = [
12
+
{ file: 'foundations1.html', name: 'Lecture 1: Introduction' },
13
+
{ file: 'foundations2.html', name: 'Lecture 2: Recursion' },
14
+
{ file: 'foundations3.html', name: 'Lecture 3: Lists' },
15
+
{ file: 'foundations4.html', name: 'Lecture 4: More on Lists' },
16
+
// foundations5 uses take/drop from earlier lectures without defining them
17
+
{ file: 'foundations5.html', name: 'Lecture 5: Sorting', knownUnbound: true },
18
+
{ file: 'foundations6.html', name: 'Lecture 6: Datatypes and Trees' },
19
+
// foundations7 uses tree type (Lf/Br) from foundations6
20
+
{ file: 'foundations7.html', name: 'Lecture 7: Dictionaries', knownUnbound: true },
21
+
// foundations8 uses dub from earlier context
22
+
{ file: 'foundations8.html', name: 'Lecture 8: Functions as Values', knownUnbound: true },
23
+
{ file: 'foundations9.html', name: 'Lecture 9: Sequences' },
24
+
{ file: 'foundations10.html', name: 'Lecture 10: Queues' },
25
+
{ file: 'foundations11.html', name: 'Lecture 11: Procedural Programming' },
26
+
];
27
+
28
+
/**
29
+
* Wait for all auto-run cells to complete, then run remaining cells one by one.
30
+
*/
31
+
async function runAllCellsSequentially(page, { cellTimeout = 30_000 } = {}) {
32
+
// First, wait for all run-on=load cells to finish
33
+
try {
34
+
await page.waitForFunction(
35
+
() => {
36
+
const cells = document.querySelectorAll('x-ocaml');
37
+
return Array.from(cells).every((c) => {
38
+
if (c.getAttribute('run-on') !== 'load') return true;
39
+
if (c.getAttribute('mode') === 'hidden') return true;
40
+
const shadow = c.shadowRoot;
41
+
if (!shadow) return false;
42
+
return shadow.querySelector('.caml_stdout, .caml_stderr, .caml_meta') !== null;
43
+
});
44
+
},
45
+
{ timeout: 60_000 }
46
+
);
47
+
} catch {
48
+
// Some auto-run cells timed out, continue anyway
49
+
}
50
+
51
+
// Now run click-to-run cells one at a time
52
+
const cellCount = await page.evaluate(
53
+
() => document.querySelectorAll('x-ocaml').length
54
+
);
55
+
56
+
for (let i = 0; i < cellCount; i++) {
57
+
const info = await page.evaluate((idx) => {
58
+
const cell = document.querySelectorAll('x-ocaml')[idx];
59
+
const mode = cell.getAttribute('mode');
60
+
const shadow = cell.shadowRoot;
61
+
const hasOutput =
62
+
shadow &&
63
+
shadow.querySelector('.caml_stdout, .caml_stderr, .caml_meta') !== null;
64
+
return { mode, hasOutput };
65
+
}, i);
66
+
67
+
if (info.mode === 'hidden' || info.mode === 'exercise' || info.mode === 'test' || info.hasOutput) continue;
68
+
69
+
// Click Run
70
+
await page.evaluate((idx) => {
71
+
const cell = document.querySelectorAll('x-ocaml')[idx];
72
+
const shadow = cell.shadowRoot;
73
+
if (!shadow) return;
74
+
const btn =
75
+
shadow.querySelector('button[aria-label="Run"]') ||
76
+
shadow.querySelector('button[title="Run"]') ||
77
+
shadow.querySelector('button');
78
+
if (btn) btn.click();
79
+
}, i);
80
+
81
+
// Wait for this cell to produce output
82
+
try {
83
+
await page.waitForFunction(
84
+
(idx) => {
85
+
const cell = document.querySelectorAll('x-ocaml')[idx];
86
+
const shadow = cell.shadowRoot;
87
+
if (!shadow) return false;
88
+
return (
89
+
shadow.querySelector('.caml_stdout, .caml_stderr, .caml_meta') !==
90
+
null
91
+
);
92
+
},
93
+
i,
94
+
{ timeout: cellTimeout }
95
+
);
96
+
} catch {
97
+
// Cell timed out — continue to next
98
+
}
99
+
}
100
+
}
101
+
102
+
for (const nb of NOTEBOOKS) {
103
+
test.describe(nb.name, () => {
104
+
test('all cells execute without errors', async ({ page }) => {
105
+
await page.goto(`${BASE}/${nb.file}`);
106
+
await waitForCellsInitialized(page);
107
+
await runAllCellsSequentially(page, { cellTimeout: 30_000 });
108
+
109
+
const outputs = await getCellOutputs(page);
110
+
const errors = findCellErrors(outputs).filter((e) => {
111
+
if (e.mode === 'exercise' || e.mode === 'test') return false;
112
+
// Skip Unbound errors in notebooks with known cross-lecture dependencies
113
+
if (
114
+
nb.knownUnbound &&
115
+
(e.stderr.includes('Unbound value') ||
116
+
e.stderr.includes('Unbound constructor') ||
117
+
e.stderr.includes('Unbound type'))
118
+
)
119
+
return false;
120
+
return true;
121
+
});
122
+
123
+
if (errors.length > 0) {
124
+
const details = errors
125
+
.map(
126
+
(e) => ` Cell ${e.index} (${e.mode}): ${e.stderr.slice(0, 200)}`
127
+
)
128
+
.join('\n');
129
+
expect(errors, `Cells with errors:\n${details}`).toEqual([]);
130
+
}
131
+
});
132
+
});
133
+
}
+166
test/e2e/helpers.js
+166
test/e2e/helpers.js
···
1
+
// @ts-check
2
+
/**
3
+
* Helpers for interacting with x-ocaml web component cells in Playwright.
4
+
*
5
+
* x-ocaml cells use shadow DOM. Outputs appear as .caml_stdout, .caml_stderr,
6
+
* .caml_meta divs inside the shadow root. Editors are .cm-editor elements.
7
+
*/
8
+
9
+
/**
10
+
* Wait for all x-ocaml cells on the page to have shadow DOM attached.
11
+
* This means connectedCallback has fired.
12
+
*/
13
+
async function waitForCellsInitialized(page, { timeout = 30_000 } = {}) {
14
+
await page.waitForFunction(
15
+
() => {
16
+
const cells = document.querySelectorAll('x-ocaml');
17
+
if (cells.length === 0) return false;
18
+
return Array.from(cells).every(
19
+
(c) => c.getAttribute('mode') === 'hidden' || c.shadowRoot !== null
20
+
);
21
+
},
22
+
{ timeout }
23
+
);
24
+
}
25
+
26
+
/**
27
+
* Wait for all auto-run cells (run-on="load") to produce output.
28
+
* Also waits for test cells that auto-trigger after their exercise.
29
+
*/
30
+
async function waitForAutoRunComplete(page, { timeout = 60_000 } = {}) {
31
+
await page.waitForFunction(
32
+
(timeoutMs) => {
33
+
const cells = document.querySelectorAll('x-ocaml');
34
+
const autoRunCells = Array.from(cells).filter((c) => {
35
+
const mode = c.getAttribute('mode');
36
+
if (mode === 'hidden') return false;
37
+
return c.getAttribute('run-on') === 'load' || mode === 'test';
38
+
});
39
+
40
+
if (autoRunCells.length === 0) return true;
41
+
42
+
return autoRunCells.every((c) => {
43
+
const shadow = c.shadowRoot;
44
+
if (!shadow) return false;
45
+
return shadow.querySelector('.caml_stdout, .caml_stderr, .caml_meta') !== null;
46
+
});
47
+
},
48
+
{ timeout },
49
+
timeout
50
+
);
51
+
}
52
+
53
+
/**
54
+
* Wait for ALL cells on the page to have output (after running them all).
55
+
*/
56
+
async function waitForAllCellsComplete(page, { timeout = 120_000 } = {}) {
57
+
await page.waitForFunction(
58
+
() => {
59
+
const cells = document.querySelectorAll('x-ocaml');
60
+
return Array.from(cells).every((c) => {
61
+
const mode = c.getAttribute('mode');
62
+
if (mode === 'hidden') return true;
63
+
const shadow = c.shadowRoot;
64
+
if (!shadow) return false;
65
+
return shadow.querySelector('.caml_stdout, .caml_stderr, .caml_meta') !== null;
66
+
});
67
+
},
68
+
{ timeout }
69
+
);
70
+
}
71
+
72
+
/**
73
+
* Click the Run button on all non-auto-run cells, in order.
74
+
* Waits briefly between each to respect cell chaining.
75
+
*/
76
+
async function runAllCells(page, { delayMs = 500 } = {}) {
77
+
const cellCount = await page.evaluate(() => {
78
+
return document.querySelectorAll('x-ocaml').length;
79
+
});
80
+
81
+
for (let i = 0; i < cellCount; i++) {
82
+
const needsClick = await page.evaluate((idx) => {
83
+
const cell = document.querySelectorAll('x-ocaml')[idx];
84
+
if (!cell) return false;
85
+
const mode = cell.getAttribute('mode');
86
+
if (mode === 'hidden') return false;
87
+
if (cell.getAttribute('run-on') === 'load') return false;
88
+
// Note: test cells may auto-trigger after their exercise, but in some
89
+
// configurations they need manual clicking too
90
+
const shadow = cell.shadowRoot;
91
+
if (!shadow) return false;
92
+
// Already has output — skip
93
+
if (shadow.querySelector('.caml_stdout, .caml_stderr, .caml_meta')) return false;
94
+
return true;
95
+
}, i);
96
+
97
+
if (needsClick) {
98
+
await page.evaluate((idx) => {
99
+
const cell = document.querySelectorAll('x-ocaml')[idx];
100
+
const shadow = cell.shadowRoot;
101
+
const btn = shadow.querySelector('button[aria-label="Run"]') || shadow.querySelector('button[title="Run"]') || shadow.querySelector('button');
102
+
if (btn) btn.click();
103
+
}, i);
104
+
await page.waitForTimeout(delayMs);
105
+
}
106
+
}
107
+
}
108
+
109
+
/**
110
+
* Get all cell outputs as an array of { mode, stdout, stderr, meta } objects.
111
+
*/
112
+
async function getCellOutputs(page) {
113
+
return page.evaluate(() => {
114
+
const cells = document.querySelectorAll('x-ocaml');
115
+
return Array.from(cells).map((cell) => {
116
+
const mode = cell.getAttribute('mode') || 'interactive';
117
+
const dataFor = cell.getAttribute('data-for');
118
+
const dataId = cell.getAttribute('data-id');
119
+
const shadow = cell.shadowRoot;
120
+
121
+
if (!shadow) {
122
+
return { mode, dataFor, dataId, stdout: '', stderr: '', meta: '' };
123
+
}
124
+
125
+
const getText = (sel) =>
126
+
Array.from(shadow.querySelectorAll(sel))
127
+
.map((el) => el.textContent)
128
+
.join('\n');
129
+
130
+
return {
131
+
mode,
132
+
dataFor,
133
+
dataId,
134
+
stdout: getText('.caml_stdout'),
135
+
stderr: getText('.caml_stderr'),
136
+
meta: getText('.caml_meta'),
137
+
};
138
+
});
139
+
});
140
+
}
141
+
142
+
/**
143
+
* Check that no cell has error output.
144
+
* Returns array of { index, mode, stderr } for cells with errors.
145
+
*/
146
+
function findCellErrors(outputs) {
147
+
return outputs
148
+
.map((o, i) => ({ index: i, ...o }))
149
+
.filter(
150
+
(o) =>
151
+
o.mode !== 'hidden' &&
152
+
o.stderr &&
153
+
(o.stderr.includes('Error:') ||
154
+
o.stderr.includes('Unbound') ||
155
+
o.stderr.includes('Exception:'))
156
+
);
157
+
}
158
+
159
+
module.exports = {
160
+
waitForCellsInitialized,
161
+
waitForAutoRunComplete,
162
+
waitForAllCellsComplete,
163
+
runAllCells,
164
+
getCellOutputs,
165
+
findCellErrors,
166
+
};
+157
test/e2e/onnx-inference.spec.js
+157
test/e2e/onnx-inference.spec.js
···
1
+
// @ts-check
2
+
const { test, expect } = require('@playwright/test');
3
+
const {
4
+
waitForCellsInitialized,
5
+
getCellOutputs,
6
+
} = require('./helpers');
7
+
8
+
const BASE = '/reference/onnxrt';
9
+
10
+
/**
11
+
* Run cells one by one, waiting for each to produce output.
12
+
*/
13
+
async function runCellsOneByOne(page, { cellTimeout = 30_000 } = {}) {
14
+
const cellCount = await page.evaluate(
15
+
() => document.querySelectorAll('x-ocaml').length
16
+
);
17
+
18
+
for (let i = 0; i < cellCount; i++) {
19
+
const info = await page.evaluate((idx) => {
20
+
const cell = document.querySelectorAll('x-ocaml')[idx];
21
+
const mode = cell.getAttribute('mode');
22
+
const shadow = cell.shadowRoot;
23
+
const hasOutput =
24
+
shadow &&
25
+
shadow.querySelector('.caml_stdout, .caml_stderr, .caml_meta') !== null;
26
+
return { mode, hasOutput };
27
+
}, i);
28
+
29
+
if (info.mode === 'hidden' || info.hasOutput) continue;
30
+
31
+
// Click Run
32
+
await page.evaluate((idx) => {
33
+
const cell = document.querySelectorAll('x-ocaml')[idx];
34
+
const shadow = cell.shadowRoot;
35
+
if (!shadow) return;
36
+
const btn =
37
+
shadow.querySelector('button[aria-label="Run"]') || shadow.querySelector('button[title="Run"]') ||
38
+
shadow.querySelector('button');
39
+
if (btn) btn.click();
40
+
}, i);
41
+
42
+
// Wait for this cell to produce output
43
+
try {
44
+
await page.waitForFunction(
45
+
(idx) => {
46
+
const cell = document.querySelectorAll('x-ocaml')[idx];
47
+
const shadow = cell.shadowRoot;
48
+
if (!shadow) return false;
49
+
return (
50
+
shadow.querySelector('.caml_stdout, .caml_stderr, .caml_meta') !==
51
+
null
52
+
);
53
+
},
54
+
i,
55
+
{ timeout: cellTimeout }
56
+
);
57
+
} catch {
58
+
// Cell timed out — continue
59
+
}
60
+
}
61
+
}
62
+
63
+
test.describe('ONNX Inference', () => {
64
+
test('sentiment analysis classifies positive text correctly', async ({
65
+
page,
66
+
}) => {
67
+
test.skip(!!process.env.CI, 'Skipped in CI — DistilBERT model download too slow');
68
+
test.setTimeout(300_000); // model download can be very slow
69
+
70
+
await page.goto(`${BASE}/sentiment_example.html`);
71
+
await waitForCellsInitialized(page, { timeout: 60_000 });
72
+
73
+
// Run cells with generous per-cell timeout for model loading
74
+
await runCellsOneByOne(page, { cellTimeout: 120_000 });
75
+
76
+
const outputs = await getCellOutputs(page);
77
+
78
+
// Result may appear in a widget or stdout. Wait for it.
79
+
try {
80
+
await page.waitForFunction(
81
+
() => {
82
+
const cells = document.querySelectorAll('x-ocaml');
83
+
for (const cell of cells) {
84
+
const shadow = cell.shadowRoot;
85
+
if (!shadow) continue;
86
+
const text = (shadow.textContent || '').toUpperCase();
87
+
if (text.includes('POSITIVE') || text.includes('NEGATIVE')) return true;
88
+
}
89
+
return false;
90
+
},
91
+
{ timeout: 120_000 }
92
+
);
93
+
} catch {
94
+
// Timeout
95
+
}
96
+
97
+
const allText = await page.evaluate(() => {
98
+
const cells = document.querySelectorAll('x-ocaml');
99
+
return Array.from(cells).map((cell) => {
100
+
const shadow = cell.shadowRoot;
101
+
return shadow ? shadow.textContent : '';
102
+
}).join('\n');
103
+
});
104
+
expect(allText.toUpperCase()).toContain('POSITIVE');
105
+
});
106
+
107
+
test('tensor addition produces correct result', async ({ page }) => {
108
+
test.setTimeout(180_000);
109
+
110
+
await page.goto(`${BASE}/add_example.html`);
111
+
await waitForCellsInitialized(page, { timeout: 60_000 });
112
+
await runCellsOneByOne(page, { cellTimeout: 60_000 });
113
+
114
+
const outputs = await getCellOutputs(page);
115
+
116
+
// The result appears in a reactive widget, not stdout. Wait for it.
117
+
let widgetText = '';
118
+
try {
119
+
await page.waitForFunction(
120
+
() => {
121
+
const cells = document.querySelectorAll('x-ocaml');
122
+
for (const cell of cells) {
123
+
const shadow = cell.shadowRoot;
124
+
if (!shadow) continue;
125
+
const widget = shadow.querySelector('[data-widget-id="result"]') ||
126
+
shadow.querySelector('.widget-container');
127
+
if (widget && widget.textContent.includes('C =')) return true;
128
+
// Also check stdout/meta for the result
129
+
const text = shadow.textContent || '';
130
+
if (text.includes('C =')) return true;
131
+
}
132
+
return false;
133
+
},
134
+
{ timeout: 60_000 }
135
+
);
136
+
} catch {
137
+
// Timeout — check what we have anyway
138
+
}
139
+
140
+
// Collect all text from cells including widgets
141
+
widgetText = await page.evaluate(() => {
142
+
const cells = document.querySelectorAll('x-ocaml');
143
+
return Array.from(cells).map((cell) => {
144
+
const shadow = cell.shadowRoot;
145
+
return shadow ? shadow.textContent : '';
146
+
}).join('\n');
147
+
});
148
+
149
+
const hasExpectedSum =
150
+
widgetText.includes('5') &&
151
+
widgetText.includes('7') &&
152
+
widgetText.includes('9');
153
+
expect(hasExpectedSum, `Expected tensor sum values 5, 7, 9 in output. Got: ${widgetText.slice(0, 500)}`).toBe(
154
+
true
155
+
);
156
+
});
157
+
});
+14
test/e2e/package.json
+14
test/e2e/package.json
···
1
+
{
2
+
"name": "site-e2e-tests",
3
+
"version": "1.0.0",
4
+
"private": true,
5
+
"scripts": {
6
+
"test": "npx playwright test",
7
+
"test:headed": "npx playwright test --headed",
8
+
"test:ui": "npx playwright test --ui",
9
+
"install-browsers": "npx playwright install chromium"
10
+
},
11
+
"devDependencies": {
12
+
"@playwright/test": "^1.40.0"
13
+
}
14
+
}
+74
test/e2e/page-health.spec.js
+74
test/e2e/page-health.spec.js
···
1
+
// @ts-check
2
+
const { test, expect } = require('@playwright/test');
3
+
4
+
const INTERACTIVE_PAGES = [
5
+
'/reference/odoc-interactive-extension/focs_2020_q2.html',
6
+
'/reference/odoc-interactive-extension/focs_2024_q1.html',
7
+
'/reference/odoc-interactive-extension/focs_2025_q2.html',
8
+
'/reference/odoc-interactive-extension/demo1.html',
9
+
'/reference/odoc-interactive-extension/demo_widgets.html',
10
+
'/reference/odoc-interactive-extension/demo3_oxcaml.html',
11
+
'/reference/onnxrt/sentiment_example.html',
12
+
'/reference/onnxrt/add_example.html',
13
+
'/notebooks/foundations/foundations1.html',
14
+
'/notebooks/foundations/foundations3.html',
15
+
'/notebooks/foundations/foundations5.html',
16
+
'/notebooks/oxcaml/local.html',
17
+
'/notebooks/interactive_map.html',
18
+
];
19
+
20
+
const SCROLLYCODE_PAGES = [
21
+
'/reference/odoc-scrollycode-extension/warm_parser.html',
22
+
'/reference/odoc-scrollycode-extension/dark_repl.html',
23
+
'/reference/odoc-scrollycode-extension/notebook_testing.html',
24
+
];
25
+
26
+
const STATIC_PAGES = [
27
+
'/',
28
+
'/blog/',
29
+
'/notebooks/',
30
+
'/projects/',
31
+
'/reference/',
32
+
];
33
+
34
+
test.describe('Page Health', () => {
35
+
for (const url of [
36
+
...INTERACTIVE_PAGES,
37
+
...SCROLLYCODE_PAGES,
38
+
...STATIC_PAGES,
39
+
]) {
40
+
test(`${url} loads without errors`, async ({ page }) => {
41
+
const errors = [];
42
+
page.on('pageerror', (err) => errors.push(err.message));
43
+
44
+
const response = await page.goto(url);
45
+
expect(response.status()).toBe(200);
46
+
47
+
// Allow page to settle
48
+
await page.waitForTimeout(1000);
49
+
50
+
// No uncaught page errors
51
+
expect(errors, `Page errors on ${url}: ${errors.join(', ')}`).toEqual([]);
52
+
});
53
+
}
54
+
55
+
for (const url of INTERACTIVE_PAGES) {
56
+
test(`${url} has x-ocaml meta tags`, async ({ page }) => {
57
+
await page.goto(url);
58
+
59
+
// Should have x-ocaml-universe meta tag
60
+
const universe = await page.evaluate(() => {
61
+
const meta = document.querySelector('meta[name="x-ocaml-universe"]');
62
+
return meta ? meta.getAttribute('content') : null;
63
+
});
64
+
expect(universe).not.toBeNull();
65
+
expect(universe).toBeTruthy();
66
+
67
+
// Should have x-ocaml elements
68
+
const cellCount = await page.evaluate(
69
+
() => document.querySelectorAll('x-ocaml').length
70
+
);
71
+
expect(cellCount).toBeGreaterThan(0);
72
+
});
73
+
}
74
+
});
+23
test/e2e/playwright.config.js
+23
test/e2e/playwright.config.js
···
1
+
// @ts-check
2
+
const { defineConfig } = require('@playwright/test');
3
+
const path = require('path');
4
+
5
+
module.exports = defineConfig({
6
+
testDir: '.',
7
+
testMatch: '*.spec.js',
8
+
timeout: 120_000,
9
+
retries: 0,
10
+
workers: 1, // serial — cells share state within pages
11
+
use: {
12
+
baseURL: 'http://localhost:8770',
13
+
navigationTimeout: 60_000,
14
+
},
15
+
webServer: {
16
+
command: 'python3 -m http.server 8770',
17
+
cwd: path.resolve(__dirname, '../../_site'),
18
+
port: 8770,
19
+
timeout: 10_000,
20
+
reuseExistingServer: true,
21
+
},
22
+
reporter: [['list'], ['html', { open: 'never' }]],
23
+
});
+66
test/e2e/scrollycode-structure.spec.js
+66
test/e2e/scrollycode-structure.spec.js
···
1
+
// @ts-check
2
+
const { test, expect } = require('@playwright/test');
3
+
4
+
const BASE = '/reference/odoc-scrollycode-extension';
5
+
6
+
const PAGES = [
7
+
{ file: 'warm_parser.html', title: 'Building a JSON Parser', steps: 6 },
8
+
{ file: 'dark_repl.html', title: 'Building a REPL', steps: 6 },
9
+
{
10
+
file: 'notebook_testing.html',
11
+
title: 'Building a Test Framework',
12
+
steps: 6,
13
+
},
14
+
];
15
+
16
+
for (const pg of PAGES) {
17
+
test.describe(`Scrollycode: ${pg.title}`, () => {
18
+
test('has correct HTML structure', async ({ page }) => {
19
+
await page.goto(`${BASE}/${pg.file}`);
20
+
21
+
// Container exists
22
+
const container = page.locator('.sc-container');
23
+
await expect(container).toBeVisible();
24
+
25
+
// Correct number of steps
26
+
const steps = page.locator('.sc-step');
27
+
await expect(steps).toHaveCount(pg.steps);
28
+
29
+
// Each step has a code slot with content
30
+
for (let i = 0; i < pg.steps; i++) {
31
+
const step = steps.nth(i);
32
+
const codeSlot = step.locator('.sc-code-slot');
33
+
await expect(codeSlot).toBeAttached();
34
+
35
+
// Code slot should have at least one line
36
+
const lines = codeSlot.locator('.sc-line');
37
+
const lineCount = await lines.count();
38
+
expect(lineCount, `Step ${i} should have code lines`).toBeGreaterThan(
39
+
0
40
+
);
41
+
}
42
+
43
+
// Progress pips exist and match step count
44
+
const progressPips = page.locator('.sc-progress .sc-pip');
45
+
await expect(progressPips).toHaveCount(pg.steps);
46
+
47
+
// Step badge exists with correct format
48
+
const badge = page.locator('.sc-step-badge');
49
+
await expect(badge).toBeVisible();
50
+
const badgeText = await badge.textContent();
51
+
expect(badgeText).toMatch(/\d+ \/ \d+/);
52
+
});
53
+
54
+
test('each step has a title', async ({ page }) => {
55
+
await page.goto(`${BASE}/${pg.file}`);
56
+
57
+
const steps = page.locator('.sc-step');
58
+
for (let i = 0; i < pg.steps; i++) {
59
+
const step = steps.nth(i);
60
+
const stepNumber = step.locator('.sc-step-number');
61
+
const text = await stepNumber.textContent();
62
+
expect(text.trim()).not.toBe('');
63
+
}
64
+
});
65
+
});
66
+
}