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Salesforce Automated Accessibility Testing Libraries

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Salesforce Accessibility Automation Libraries

Automated Accessibility Testing Libraries and Tools (@sa11y packages) based on axe-core providing support for Jest unit tests, WebdriverIO component/integration tests used by teams in Salesforce. However, they are not specific to Salesforce and can be used to test any UI supported by axe-core for accessibility. These libraries are designed to be flexible, customizable and reusable to support automated accessibility testing in different testing workflows from unit to integration tests.

Sa11y Code Coverage semantic-release License NPM downloads per month of @sa11y/common package Known Vulnerabilities OpenSSF Scorecard

Docs

References

Packages

This repo contains the following packages for automated accessibility testing:

published npm version of @sa11y/jest node-current (scoped)

  • Provides a toBeAccessible() accessibility matcher for Jest
  • Provides an option to set up the sa11y API to be invoked automatically at the end of each test
  • To add accessibility testing to your Jest tests use this package

Screenshot showing Sa11y Jest API usage and a11y errors showing up in VSCode

published npm version of @sa11y/wdio node-current (scoped)

  • Provides assertAccessible(), assertAccessibleSync() APIs that can be used with WebdriverIO to check accessibility of web pages rendered in browsers

Screenshot showing a11y errors from a test using Sa11y WDIO in a terminal

published npm version of @sa11y/assert node-current (scoped)

  • Checks DOM or HTML Element for accessibility issues and throws an error if a11y issues are found
  • To add accessibility testing to your Javascript unit tests not using Jest, use this package

published npm version of @sa11y/format node-current (scoped)

  • Formats raw JSON output of a11y issues from axe into an easy to consume format by consolidating and cross-referencing
  • Used by assert Accessible API and Jest a11y matcher
  • To use axe directly and want to format the results from axe.run use this package
  • A new formatter groupViolationResultsProcessor also made available to group the a11y violations per jest test case as the existing formatter would generate test failures for each violation

published npm version of @sa11y/preset-rules node-current (scoped)

  • Provides Base, Extended, Full accessibility preset rules as axe configuration
  • The Base preset rule is used by default in the Jest a11y matcher and assert Accessible APIs
    • The APIs can be overridden to use the Extended or Full ruleset as necessary

published npm version of @sa11y/browser-lib node-current (scoped)

  • Provides a minified version of selected @sa11y libraries to be injected into a browser (using webdriver) and executed from integration testing workflows.
  • Gives WCAG SC for rulesets in addition with axe tags

Internal packages

  • Private package providing test utilities for @sa11y packages
  • Private package providing integration tests for @sa11y packages
  • Common utilities, constants, error messages for @sa11y packages

Dependency graph

Dependency graph of sa11y packages


Epilogue

A wise person once said…

"Don't talk to me until I've had coffee and you've run axe"

Embroidery that says "Don't talk to me until I've had coffee and you've run axe" in a hoop

(Image courtesy: @shleewhite, @jorycunningham)