WP_TESTS_DIR is 

current dir is /home3/joaopedr/public_html/saudesemtempo/wp-content/plugins/simple-fields/tests
<br />
<b>Warning</b>:  require_once(/home3/joaopedr/public_html/saudesemtempo/wp-content/plugins/simple-fields/tests/../tmp/wordpress-tests/includes/functions.php): Failed to open stream: No such file or directory in <b>/home3/joaopedr/public_html/saudesemtempo/wp-content/plugins/simple-fields/tests/bootstrap.php</b> on line <b>11</b><br />
<br />
<b>Fatal error</b>:  Uncaught Error: Failed opening required '/home3/joaopedr/public_html/saudesemtempo/wp-content/plugins/simple-fields/tests/../tmp/wordpress-tests/includes/functions.php' (include_path='.:/opt/cpanel/ea-php82/root/usr/share/pear') in /home3/joaopedr/public_html/saudesemtempo/wp-content/plugins/simple-fields/tests/bootstrap.php:11
Stack trace:
#0 {main}
  thrown in <b>/home3/joaopedr/public_html/saudesemtempo/wp-content/plugins/simple-fields/tests/bootstrap.php</b> on line <b>11</b><br />