* @throws Exception
*/
public void testNullMessage()
throws Exception
{
ErrorDiagnoser diagnoser =
(ArtifactResolverDiagnoser) lookup( ErrorDiagnoser.ROLE, "ArtifactResolverDiagnoser" );
Throwable error = new ArtifactResolutionException( null, null, null, null, null, null, new IOException() );
assertTrue( diagnoser.canDiagnose( error ) );
diagnoser.diagnose( error );
}