ember-accessibility
==============================================================================

 

An EmberJS addon to help identify accessibility violations.

This addon uses the axe-core library
to audit your apps.

DEMO

Compatibility
------------------------------------------------------------------------------

* Ember.js v3.24 or above
* Ember CLI v3.24 or above
* Node.js v12 or above

Installation
------------------------------------------------------------------------------

``
ember install @coyote-labs/ember-accessibility
`


Usage
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* In your application template, include the AccessibilityTester component.
For example,
`handlebars


Welcome to my app!



`
* In your config/environment.js, provide an ember-accessibility object that has
the following fields.

isEnabled: Defaults to false. You can set it to environment === 'development'.
This addon's code will be stripped unless this is set to true.

axe: Allows configuring axe-core. Refer axe-core's documentation.

`javascript
// config/environment.js
let ENV = {
'ember-accessibility': {
isEnabled: environment === 'development',
axe: {
restoreScroll: true
}
}
};
`
* Click on the Check Accessiblity button that appears when you visit the app.

* If you want to change the default position of the toggle, pass top and left position values to the AccessibilityTester component.

Note: Values are in pixels.

For example,
`handlebars


Welcome to my app!



`

* Fix the errors that are displayed and make your app accessible!

Using in engines

* Make sure you add ember-accessibility to the engine's dependencies.
* Add the accessibility-test service to your engine's dependencies in app.js.


Using in test

- Import the auditAccessibility() helper from '@coyote-labs/ember-accessibility/test-support/audit'; and then invoke it where needed.

> Note: The config passed in config/environment.js will be applied here as well.

##### Acceptance Tests

`javascript
import auditAccessibility from '@coyote-labs/ember-accessibility/test-support/audit';

test('Checks accessibility violations', function(assert) {
visit('/');
assert.notOk(await auditAccessibility());
});
`
Or, you can pass any selector or element from the visited page.

`javascript
import auditAccessibility from '@coyote-labs/ember-accessibility/test-support/audit';

test('Checks accessibility violations', function(assert) {
visit('/');
assert.notOk(await auditAccessibility('#someID'));
});
`
##### Integration / Unit Tests

`javascript
import auditAccessibility from '@coyote-labs/ember-accessibility/test-support/audit';

test('Checks accessibility violations in component', function(assert) {
await render(hbs);
assert.notOk(await auditAccessibility(this.element));
});
``

How is this different from ember-a11y-testing?
------------------------------------------------------------------------------

ember-a11y-testing is primarily geared towards testing as of now. While this
will most definitely change, we wanted something that will provide contextual
and meaningful feedback to developers during the development phase itself.

For example, here is how ember-a11y-testing looks in development currently.

Notice how all the errors are present on the console. This addon on the other hand
will make it easier to comprehend those errors.

Another major reason that we wrote this addon is because our tests became
extremely slow when using ember-a11y-testing. This is a major pain point when
using it on large projects. By doing a11y testing in development and review
phases, we were able to avoid that.

Contributing
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See the Contributing guide for details.

License
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This project is licensed under the MIT License.