browser_webconsole_script_errordoc_urls.js

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/* Any copyright is dedicated to the Public Domain.

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

// Ensure that [Learn More] links appear alongside any errors listed

// in "errordocs.js". Note: this only tests script execution.

"use strict";

const ErrorDocs = require("resource://devtools/server/actors/errordocs.js");

const TEST_URI = "data:text/html;charset=utf8,<!DOCTYPE html>errordoc tests";

function makeURIData(script) {

  return `data:text/html;charset=utf8,<!DOCTYPE html><script>${script}</script>`;

const TestData = [

    jsmsg: "JSMSG_READ_ONLY",

    script:

      "'use strict'; (Object.freeze({name: 'Elsa', score: 157})).score = 0;",

    selector: ".error",

    isException: true,

    expected: 'TypeError: "score" is read-only',

},

    jsmsg: "JSMSG_STMT_AFTER_RETURN",

    script: "function a() { return; 1 + 1; };",

    selector: ".warn",

    isException: false,

    expected: "unreachable code after return statement",

},

];

add_task(async function () {

  const hud = await openNewTabAndConsole(TEST_URI);

  for (const data of TestData) {

    await testScriptError(hud, data);

});

async function testScriptError(hud, testData) {

  const isE10s = Services.appinfo.browserTabsRemoteAutostart;

  if (testData.isException && !isE10s) {

    expectUncaughtException();

  await navigateTo(makeURIData(testData.script));

  const msg = "the expected error message was displayed";

  info(`waiting for ${msg} to be displayed`);

  await waitFor(() =>

    findMessageByType(hud, testData.expected, testData.selector)

);

  ok(true, msg);

  // grab the most current error doc URL.

  const urlObj = new URL(

    ErrorDocs.GetURL({ errorMessageName: testData.jsmsg })

);

  // strip all params from the URL.

  const url = `${urlObj.origin}${urlObj.pathname}`;

  // Gather all URLs displayed in the console. [Learn More] links have no href

  // but have the URL in the title attribute.

  const hrefs = new Set();

  for (const link of hud.ui.outputNode.querySelectorAll("a")) {

    hrefs.add(link.title);

  ok(hrefs.has(url), `Expected a link to ${url}.`);

  await clearOutput(hud);