Test ldap

[uberbrady]

This adds a test suite for our LDAP implementation. The only way I was able to make it make sense to me was to add a special Mocking library that allows me to 'stub out' the actual LDAP calls. It's not particularly pretty, but it's at least a decent start to being able to be more confident about changes we make in the LDAP subsystem. There's also more work to do here, in that this doesn't carefully check the various values to ensure that they're all what we would expect. But, again, it's at least a decent start, that we can continue to beef up over time so we can be more confident about making bigger changes to the LDAP subsystem.

[what-the-diff]

PR Summary

• LDAP Support Suggestion
  The PR has included a suggestion for LDAP support within the composer.json file. This indicates a preference for including ext-ldap in the project dependencies.

• Adjustable LDAP Settings
  Three functional updates have been added to the Settings.php file. These adjustments allow the application to modify its LDAP settings with the methods enableLdap(), enableAnonymousLdap(), and enableBadPasswordLdap().

• Introduction of LDAP Testing
  A new file titled LdapTest.php has been introduced, offering several test cases for the Ldap class, enhancing the project's robustness and functionality:

  • connect(): Checks if the connection to LDAP is established correctly.
  • bindAdmin(), bindBad(), anonymousBind(), badAnonymousBind(): Tests if the admin can bind to LDAP appropriately, even under erroneous conditions.
  • badEncryptedPassword(): Ensures that an exception is thrown for improperly encrypted passwords.
  • findAndBind(), findAndBindBadPassword(), findAndBindCannotFindSelf(): Validates that the LDAP user can be found and bind successfully. Also ascertains that exceptions are thrown when the search function fails or the admin bind doesn't succeed.
  • findLdapUsers(), findLdapUsersPaginated(): Monitors if the found LDAP users are correct and tests pagination in this context.

Overall, this PR strengthens the project's LDAP support, ensures that settings can be modified, and verifies functionality through thorough test coverage.