You are reading the documentation for version 2.2. Magento 2.3 is the latest version available. Ensure you are reading the documentation for your version of Magento.

Quick start. See logs for failed tests

All failed tests are logged in <magento2_root_dir>/dev/tests/functional/var/log.

This path is set in <magento2>/dev/tests/functional/phpunit.xml, element <env name="basedir" value="<path_to_directory>" />.

All Magento errors are logged in <magento2_root_dir>/var/log.