// test me.dir in conjunction with Machine.add 3 => int num;if(me.args())    me.arg(0) => Std.atoi => num; me.dir() => string meDir;me.dir(1) => string meDir1;me.dir(2) => string meDir2;me.dir(3) => string meDir3; if(meDir1 + "01-Basic/" != meDir){    <<< "failure", meDir1, "!=", meDir >>>;    me.exit();} if(meDir2 + "test/01-Basic/" != meDir){    <<< "failure", meDir2, "!=", meDir >>>;    me.exit();} if(meDir3 + "src/test/01-Basic/" != meDir){    <<< "failure", meDir3, "!=", meDir >>>;    me.exit();} if(num > 0){    me.dir(-1)+"/01-Basic/77.ck:"+(num-1) => string add;    Machine.add(add);}else{    <<< "success" >>>;}