An EmberJS addon to help identify accessibility violations during development
An EmberJS addon to help identify accessibility violations.
This addon uses the axe-core library to audit your apps.
ember install @coyote-labs/ember-accessibility
In your application template, include the AccessibilityTester component. For example,
<h1>Welcome to my app!</h1>
<AccessibilityTester />
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.
// 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,
<h1>Welcome to my app!</h1>
<AccessibilityTester @top="25" @left="750"/>
Fix the errors that are displayed and make your app accessible!
Using in engines
ember-accessibility
to the engine's dependencies.accessibility-test
service to your engine's dependencies in app.js
.Using in test
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.
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.
import auditAccessibility from '@coyote-labs/ember-accessibility/test-support/audit';
test('Checks accessibility violations', function(assert) {
visit('/');
assert.notOk(await auditAccessibility('#someID'));
});
import auditAccessibility from '@coyote-labs/ember-accessibility/test-support/audit';
test('Checks accessibility violations in component', function(assert) {
await render(hbs`<AccessibilityTester />`);
assert.notOk(await auditAccessibility(this.element));
});
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.
See the Contributing guide for details.
This project is licensed under the MIT License.