Function isZeroFilled

test/parallel/test-buffer-zero-fill-cli.js:11–15

(buf)

const assert = require('assert');

function isZeroFilled(buf) {
  for (const n of buf)
    if (n > 0) return false;
  return true;
}

// We have to consume the data from the pool as otherwise
// we would be testing what's in snapshot, which is zero-filled