Setup Check that there are any users on your site (other than the admin user). Access to the console of the webserver (locally, in the docker container etc.). Get the username and the email of at least two users. (For convenience in the test description I will use username: student1, email: student1@example.org and username: student2, email: student2@example.org, in addition we expect student1 to have id 3 and student2 to have the id 4). Access to the database to run arbitrary queries. Testing enable and disable emailstop Check that in DB user.emailstop equals 0 for the user with email student1@example.org On the console run: php admin/cli/emailstop.php -u=student1 Expected output: user=student1 - emailstop=0 On the console run: php admin/cli/emailstop.php -e=student1@example.org Expected output: user= student1@example.org - emailstop=0 On the console run: php admin/cli/emailstop.php -e=student1@example.org -s=1 Expected output: Update user student1@example.org (3) - ok On the console run: php admin/cli/emailstop.php --email=student1@example.org Expected output: user= student1@example.org - emailstop=1 Check that in DB user.emailstop equals 1 for this user On the console run: php admin/cli/emailstop.php --email=student1@example.org --stop=off -q No output expected. On the console run: php admin/cli/emailstop.php --id=3 Expected output: user=3 - emailstop=0 Check that in DB user.emailstop equals 0 for this user On the console run: php admin/cli/emailstop.php -i=3 -s=on -q No output expected. On the console run: php admin/cli/emailstop.php --username=student1,student2 -s=on Expected output: Update user student1 (3) - already done Update user student2 (4) - ok On the console run: php admin/cli/emailstop.php -u=student1 Expected output: emailstop=1 Check that in DB user.emailstop equals 1 for user student1 and student2 On the console run: php admin/cli/emailstop.php --help Expected output: Helpscreen with insctructions Testing with inapropriate args On the console run: php admin/cli/emailstop.php Expected output: Either username or email must be set. On the console run: php admin/cli/emailstop.php foo Expected output: Unrecognised options:   foo Please use --help option. On the console run: php admin/cli/emailstop.php -u=student1 -e=student1@example.org Expected output: Only one of email, username, or id can be set to identify user. On the console run: php admin/cli/emailstop.php -u=student1234 Expected output: Can not find any user by username: 'student1234'. On the console run: php admin/cli/emailstop.php --email=student1234@example.org Expected output: Can not find any user by email: 'student1234@example.org'. On the console run: php admin/cli/emailstop.php -u=student1 -s=yes Expected output: Value for the emailstop flag must be one of: 0, 1, off, on.