nodejs/test/parallel/test-stream2-read-sync-stack.js

'use strict';
const common = require('../common');
const Readable = require('stream').Readable;
const r = new Readable();
const N = 256 * 1024;

// Go ahead and allow the pathological case for this test.
// Yes, it's an infinite loop, that's the point.
process.maxTickDepth = N + 2;

let reads = 0;
r._read = function(n) {
  const chunk = reads++ === N ? null : Buffer.allocUnsafe(1);
  r.push(chunk);
};

r.on('readable', function onReadable() {
  if (!(r._readableState.length % 256))
    console.error('readable', r._readableState.length);
  r.read(N * 2);
});

r.on('end', common.mustCall(function() {}));

r.read(0);