1'use strict'; 2 3const common = require('../common'); 4const assert = require('assert'); 5 6// This test ensures that Node.js will not ignore tty 'readable' subscribers 7// when it's the only tty subscriber and the only thing keeping event loop alive 8// https://github.com/nodejs/node/issues/20503 9 10process.stdin.setEncoding('utf8'); 11 12const expectedInput = ['foo', 'bar', null]; 13 14process.stdin.on('readable', common.mustCall(function() { 15 const data = process.stdin.read(); 16 assert.strictEqual(data, expectedInput.shift()); 17}, 3)); // first 2 data, then end 18 19process.stdin.on('end', common.mustCall()); 20 21setTimeout(() => { 22 process.stdin.push('foo'); 23 process.nextTick(() => { 24 process.stdin.push('bar'); 25 process.nextTick(() => { 26 process.stdin.push(null); 27 }); 28 }); 29}, 1); 30