test-debugger-restart-message.js

'use strict';

const common = require('../common');

common.skipIfInspectorDisabled();

const assert = require('assert');

const RESTARTS = 10;

const fixtures = require('../common/fixtures');
const startCLI = require('../common/debugger');

// Using `restart` should result in only one "Connect/For help" message.
{
  const script = fixtures.path('debugger', 'three-lines.js');
  const cli = startCLI([script]);

  const listeningRegExp = /Debugger listening on/g;

  async function onWaitForInitialBreak() {
    try {
      await cli.waitFor(/ ok\n/);
      await cli.waitForPrompt();
      assert.strictEqual(cli.output.match(listeningRegExp).length, 1);

      for (let i = 0; i < RESTARTS; i++) {
        // For `restart`, sync on attach/prompt instead of BREAK_MESSAGE to avoid flaky races.
        // https://github.com/nodejs/node/issues/61762
        await cli.command('restart');
        await cli.waitFor(/Debugger attached\./);
        await cli.waitForPrompt();
        assert.strictEqual(cli.output.match(listeningRegExp).length, 1);
      }
    } finally {
      await cli.quit();
    }

    assert.doesNotMatch(cli.stderrOutput, /MaxListenersExceededWarning/);
  }

  onWaitForInitialBreak();
}