browser_webconsole_longstring.js

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/* Any copyright is dedicated to the Public Domain.

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

// Test that very long strings can be expanded and collapsed, and do not hang the browser.

"use strict";

const TEST_URI =

  "data:text/html,<!DOCTYPE html><meta charset=utf8>Test LongString hang";

const LONGSTRING = `foobar${"a".repeat(

)}foobaz${"abbababazomglolztest".repeat(100)}boom!`;

add_task(async function () {

  const hud = await openNewTabAndConsole(TEST_URI);

  info("Log a longString");

  const onMessage = waitForMessageByType(

    hud,

    LONGSTRING.slice(0, 50),

    ".console-api"

);

  SpecialPowers.spawn(gBrowser.selectedBrowser, [LONGSTRING], str => {

    content.console.log(str);

});

  const { node } = await onMessage;

  const arrow = node.querySelector(".theme-twisty");

  ok(arrow, "longString expand arrow is shown");

  info("wait for long string expansion");

  const onLongStringFullTextDisplayed = waitFor(() =>

    findConsoleAPIMessage(hud, LONGSTRING)

);

  arrow.click();

  await onLongStringFullTextDisplayed;

  ok(true, "The full text of the longString is displayed");

  info("wait for long string collapse");

  const onLongStringCollapsed = waitFor(

    () => !findConsoleAPIMessage(hud, LONGSTRING)

);

  arrow.click();

  await onLongStringCollapsed;

  ok(true, "The longString can be collapsed");

});