protected void beforeClass() {
// create the db shell first (before test injector creation) to avoid db4o
// file lock when objectcontainer is instantiated
final Config cfg = getConfig();
cfg.setProperty(Db4oDaoModule.ConfigKeys.DB4O_EMPLOY_SPRING_TRANSACTIONS.getKey(), false);
final Injector i = buildInjector(new SmbizDb4oDaoModule(cfg), new Db4oDbShellModule(), new SmbizModelModule(), new SmbizEGraphModule());
final IDbShell dbs = i.getInstance(IDbShell.class);
dbs.restub();
cfg.setProperty(Db4oDaoModule.ConfigKeys.DB4O_EMPLOY_SPRING_TRANSACTIONS.getKey(), true);
super.beforeClass();