Deque Workshop

Prerequisites

node.js version 14 or greater.
yarn package

Be sure to install:

node version 14+
yarn

Setup

Install dependencies

yarn

Having trouble getting setup? Try Docker

Ensure you have docker and (optionally) docker compose installed.

`docker-compose`

$ docker-compose up -d --build
# NOTE: For some of the exercises below, we will be writing
# and running the unit tests. To run the tests you will have
# to run them from within the container.
#
# - grab the container ID: `docker ps`
# - shell into the container: `docker exec -it CONTAINER_ID sh`
#
# from there you should be able to simply run `yarn test`

if you don't want to use `docker-compose`...

# build the image...
$ docker build -t recipes

# spin it up...
$ docker run \
    -it \
    --rm \
    -v ${PWD}:/app \
    -v /app/node_modules \
    -p 1235:1235 \
    recipes
# once that completes, navigate to http://localhost:1235

Workshop!

Day I

NOTE: This particular app is built with react. An understanding of react will be helpful but is not required. We will walk you through everything!

Go ahead and run your local dev server (yarn start). Feel free to play around with the app and get familiar with it.

install "axe Accessibility Linter" if using VSCode!

Check the awesome recipes app out @ http://localhost:1235

🍰 🍝 🐮 🧀 🍃

Component structure

src/index.js is the entry point to the app. It handles rendering the whole app and, when not in production, will include @axe-core/react
containers/App/index.js handles the "states" of the <App /> component. It's sole purpose is to handle state and pass relevant props down to components/App/index.js
components/App/index.js renders the "structure" of the app. It is where the global navigation/skip link/main elements live.
components/Stats/index.js is where the recipe stats live ("X eggs used", "Y recipes made", etc.)
components/Recipes/index.js is where the recipe tiles live. It also instantiates the view/edit modals for each recipe.

Unit tests

review existing unit tests / assertions

yarn test --watch # you may have to type "a" into the console to get *all* tests to run!

Fix the failing tests!

Test the live region out with a screen reader!

🤖 quick demo of @axe-core/puppeteer!

axe DevTools

Let's run axe on our app now that we've got passing unit tests.

install the axe extension

sign up for axe DevTools Pro too! https://www.deque.com/axe/devtools/

NOTE: If you have an expired trial, send us your email in slack or zoom chat and we will extend your trial!

navigate browser to http://localhost:1235
open up axe devtools
scan the page
save results!

if you happened to have opened up the devtools console earlier, you probably saw a few of these violations printed out in the console via @axe-core/react

review serious and critical issues
fix all of those issues
run the scan again until you have 0 violations (you can ignore the needs review color contrast issues -- no real issues there)

Day II

Enter IGT

Intelligent what!?!

axe Devtools Pro's Intelligent Guided Tests will guide you through testing that can't be fully automated and needs a human to answer simple questions in order to raise accessiblity violations that axe can't find on its own. Don't worry, these questions will be very easy to answer and require 0 accessiblity testing expertise.

Structure IGT

Find / fix issues related to heading structure and document title

Interactive Element IGT

Find / fix issues related to interactive elements including their various states (on the settings page)

Keyboard IGT

Run the keyboard IGT and observe what it finds.

fix the focus indication issues
hint
see `components/Recipes/index.css` (`.Recipes__card-edit:focus` style declaration)
fix the fact that the recipe card's edit button is not marked up as a real button 🤦
- write a new unit test for this!
run the keyboard IGT again to verify that the issues have been resolved! (#axeCleanKeyboardIGT)

Images IGT

Run the images IGT and observe what it finds.

fix the stats images by marking them up as presentational
hint
adding `alt=""` is sufficient (but you _can_ go above and beyond and also set `role=presentation`)
- write a unit test for this!
make the pencil icons "Edit" image's alt text descriptive / unique by following the wireframe's requirement and appending the recipe name to the alt text
- write a unit test for this!

Forms IGT

Click on "COOK CHOCOLATE CAKE" button to launch the modal. In devtools, click "Start testing forms".

fix the aria-required issue
- bonus: add some visual indication that the field is required!
make the error messages more descriptive
- write a unit test for this!
run the IGT again to verify that no remaining Forms issues exist (#axeCleanFormsIGT)

Keep it going

If you have time, run through the other IGTs and see if you can find any other issues

Sustainability

We wrote unit tests as we found issues...This prevents us from making the same mistake in the future and ensures these issues do not creep back into the source code.

Example: test that the stats images are all properly marked as decorative/presentational

// components/Stats/index.test.js
test('marks each icon as decorative', () => {
  const stats = shallow(<Stats stats={statsStub} />);

  stats.find('.Stat__value img').forEach(icon => {
    expect(icon.is('[alt=""]')).toBeTruthy();
  });
});

Try these techniques on your own content!

get axe running in your unit tests
write a11y-specific unit tests
run IGTs on your page(s)

HNguyenLy/workshop-day-II