public void tst_trg_fils() {
		for (int i = 0; i < trg_fils.length; i++) {
			Io_fil trg_fil = trg_fils[i];
			String data = Io_mgr.I.LoadFilStr(trg_fil.Url());
			Tfds.Eq_str_lines(trg_fil.Data(), data, trg_fil.Url().Raw());
		}		
	}
	public void fil_absent(String url)					{Tfds.Eq_false(Io_mgr.I.ExistsFil(Io_url_.mem_fil_(url)), "fil should not exist: {0}", url);}