Function setup

test/parallel/test-fs-realpath.js:520–532

()

  }

  function setup() {
    cleanup();
    ['',
     '/a',
     '/a/b',
     '/a/b/c',
    ].forEach(function(folder) {
      console.log(`mkdir ${root}${folder}`);
      fs.mkdirSync(root + folder, 0o700);
    });
    fs.writeFileSync(`${root}/a/b/c/x.txt`, 'foo');
    fs.symlinkSync(`${root}/a/b`, `${root}/a/link`, type);
  }
  setup();
  const linkPath = `${root}/a/link/c/x.txt`;
  const expectPath = `${root}/a/b/c/x.txt`;