browser_jsterm_null_undefined.js

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/* Any copyright is dedicated to the Public Domain.

 * http://creativecommons.org/publicdomain/zero/1.0/ */

"use strict";

const TEST_URI =

  "data:text/html,<!DOCTYPE html>Test evaluating null and undefined";

add_task(async function () {

  const hud = await openNewTabAndConsole(TEST_URI);

  // Check that an evaluated null produces "null". See Bug 650780.

  let message = await executeAndWaitForResultMessage(hud, "null", "null");

  ok(message, "`null` returned the expected value");

  message = await executeAndWaitForResultMessage(hud, "undefined", "undefined");

  ok(message, "`undefined` returned the expected value");

});