dbutils.dropTables(JpaCustomizerBuilder.getCustomizer().getJpaTables());
builder = new JpaBuilder(db.getJdbcUrl(), db.getUsername(), db.getPassword(), persistenceUnit);
builder.start();
assertEquals(0, db.getActiveConnections());
dbutils.dropTables(JpaCustomizerBuilder.getCustomizer().getJpaTables());
builder = new JpaBuilder(db.getJdbcUrl(), db.getUsername(), db.getPassword(), persistenceUnit);
builder.start();
assertEquals(0, db.getActiveConnections());