If a SVN repository needs authentication and either password or username is changed to "blablabla", it will still say "Connection Succeeded" when you hit "Test Connection".

If using the command line, it will work correctly, saying that the credentials are invalid.
This retrieves information from the repository, as expected:

svn info <svn_url> --username <correct_svn_username> --password <correct_svn_user_pwd>

This doesn't retrieve information from the repository, as expected, because username or password is incorrect:

svn info <svn_url> --username <correct_svn_username> --password <incorrect_svn_user_pwd>
svn info <svn_url> --username <incorrect_svn_username> --password <incorrect_svn_user_pwd>

FISHEYE_HOME\lib\svn\jsvn also works correctly.
This retrieves information from the repository, as expected:

jsvn info <svn_url> --username <correct_svn_username> --password <correct_svn_user_pwd>

This doesn't retrieve information from the repository, as expected, because username or password is incorrect:

jsvn info <svn_url> --username <correct_svn_username> --password <incorrect_svn_user_pwd>
jsvn info <svn_url> --username <incorrect_svn_username> --password <incorrect_svn_user_pwd>

Is this some kind of cache problem?