SVNRepository.testConnection does not throw SVNAuthenticationException

Hi
  I think there is a problem
SVNRepository.testConnection does not throw SVNAuthenticationException
but it throws
org.tmatesoft.svn.core.io.SVNCancelException

note i am using
ISVNOptions = SVNWCUtil.createDefaultOptions(credentials, true);
        ISVNOptions.setAuthStorageEnabled(false);

    at
org.tmatesoft.svn.core.internal.io.dav.HttpConnection.sendRequest(HttpConnection.java:281)
    at
org.tmatesoft.svn.core.internal.io.dav.HttpConnection.sendRequest(HttpConnection.java:222)
    at
org.tmatesoft.svn.core.internal.io.dav.HttpConnection.request(HttpConnection.java:204)
    at
org.tmatesoft.svn.core.internal.io.dav.DAVConnection.open(DAVConnection.java:72)
    at
org.tmatesoft.svn.core.internal.io.dav.DAVRepository.openConnection(DAVRepository.java:306)
    at
org.tmatesoft.svn.core.internal.io.dav.DAVRepository.testConnection(DAVRepository.java:59)

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Genius will not; un-rewarded genius is almost a proverb.
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