code: @Test public void testNested(){
    Status s0=new ErrorStatus("test0",this);
    Status s1=new InfoStatus("test1",this);
    Status s11=new InfoStatus("test11",this);
    Status s12=new InfoStatus("test12",this);
    s1.add(s11);
    s1.add(s12);
    Status s2=new InfoStatus("test2",this);
    Status s21=new InfoStatus("test21",this);
    Status s211=new WarnStatus("test211",this);
    Status s22=new InfoStatus("test22",this);
    s2.add(s21);
    s2.add(s22);
    s21.add(s211);
    Context context=new ContextBase();
    context.getStatusManager().add(s0);
    context.getStatusManager().add(s1);
    context.getStatusManager().add(s2);
    StatusPrinter.print(context);
    String result=outputStream.toString();
    assertTrue(result.contains("+ INFO in " + this.getClass().getName()));
    assertTrue(result.contains("+ WARN in " + this.getClass().getName()));
    assertTrue(result.contains("    |-WARN in " + this.getClass().getName()));
  }
  