Checks that the add_hash/2 function creates a map with the password_hash set.

List of passwords that just contain basic ascii characters.

Checks that the check_pass/3 function returns an error when no user is found.

Checks that the check_pass/3 function returns an error for incorrect passwords.

Checks that the check_pass/3 function returns the user for correct passwords.

Checks that the verify_pass/2 function returns true for correct password.

List of passwords that contain non-ascii characters.

Checks that the verify_pass/2 function returns false for incorrect passwords.