System.out.println("Tables : " + visitor.getTables());
System.out.println("fields : " + visitor.getColumns());
Assert.assertEquals(2, visitor.getTables().size());
Assert.assertEquals(true, visitor.containsTable("users"));
Assert.assertEquals(true, visitor.containsTable("groups"));
Assert.assertEquals(5, visitor.getColumns().size());
Assert.assertEquals(true, visitor.getColumns().contains(new Column("users", "id")));
Assert.assertEquals(true, visitor.getColumns().contains(new Column("users", "groupId")));
Assert.assertEquals(true, visitor.getColumns().contains(new Column("users", "name")));