input.ts

import { perfContext, before, ThroughputRuntimeCase } from '..';

//import * as xterm from 'xterm';
import { Terminal as TerminalType } from 'xterm/src/Terminal';
const Terminal: typeof TerminalType = require('xterm/lib/Terminal').Terminal;
const pty = require('xterm/node_modules/node-pty');

class TestTerminal extends Terminal {
  writeSync(data: string) {
    this.writeBuffer.push(data);
    this._innerWrite();
  }
}

perfContext('Terminal: ls -lR /usr/lib', () => {
  let content = '';
  let terminal: TestTerminal;

  before(async () => {
    // grab output from "ls -lR /usr/lib"
    const p = pty.spawn('ls', ['--color=auto', '-lR', '/usr/lib'], {
      name: 'xterm-color',
      cols: 80,
      rows: 25,
      cwd: process.env.HOME,
      env: process.env
    });
    let fromPty = '';
    p.on('data', (data: string) => { fromPty += data; });
    await new Promise(resolve => p.on('exit', () => resolve()));
    // test with +50MB
    while (content.length < 50000000) {
      content += fromPty;
    }
    terminal = new TestTerminal({
      cols: 80,
      rows: 25,
      scrollback: 1000
    });
  });

  new ThroughputRuntimeCase('', () => {
    terminal.writeSync(content);
    return {payloadSize: content.length};
  }, {fork: true}).showRuntime().showThroughput().showAverageRuntime().showAverageThroughput();
  // }, {fork: true, forkOptions: {execArgv: ['--inspect-brk']}}).showRuntime().showThroughput().showAverageRuntime().showAverageThroughput();
});