Init behat with --axe option: php admin/tool/behat/cli/init.php --axe Verify it displays the message "Axe accessibility tests are enabled by default, to disable use the --no-axe option." Run the Init script without the --axe option: php admin/tool/behat/cli/init.php Verify the message above is not displayed. Edit lib/templates/loginform.mustache and add a duplicate id id="login" attribute on this div tag to simulate an accessibility fail: -<div class="loginform"> +<div class="loginform" id="login"> Run the "Login page must be accessible" scenario: Ensure if fails and the axe accessibility validation error is displayed: 001 Scenario: Login page must be accessible # /home/simey/moodles/stable_311/moodle/auth/tests/behat/login.feature:57 And the page should meet accessibility standards # /home/simey/moodles/stable_311/moodle/auth/tests/behat/login.feature:66 Accessibility violations found: 1 violations of 'Ensures every form element has a label' (severity: critical) - aria-label attribute does not exist or is empty, aria-labelledby attribute does not exist, references elements that do not exist or references elements that are empty, Form element does not have an implicit (wrapped) <label>, Form element does not have an explicit <label>, Element has no title attribute or the title attribute is empty: #username Run the init script again with --no-axe option: php admin/tool/behat/cli/init.php --no-axe . Verify it displays the message "Axe accessibility tests have been disabled." Run the "Login page must be accessible" scenario again. Verify the accessibility failure is not displayed.