browser_jsterm_eager_evaluation_warnings.js

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/* This Source Code Form is subject to the terms of the Mozilla Public

 * License, v. 2.0. If a copy of the MPL was not distributed with this

 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

"use strict";

const TEST_URI = `data:text/html;charset=utf-8,<!DOCTYPE html>Test that eager evaluation can't log warnings in the output`;

add_task(async function () {

  const hud = await openNewTabAndConsole(TEST_URI);

  setInputValue(hud, `document.getElementById("")`);

  await waitForEagerEvaluationResult(hud, "null");

  info("Wait for a bit so a warning message could be displayed");

  await wait(2000);

is(

    findWarningMessage(hud, "getElementById"),

    undefined,

    "The eager evaluation did not triggered a warning message"

);

  info("Sanity check for the warning message when the expression is evaluated");

  EventUtils.synthesizeKey("KEY_Enter");

  await waitFor(() => findWarningMessage(hud, "getElementById"));

  ok(true, "Evaluation of the expression does trigger the warning message");

});