/* 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";

// Test the accessible highlighter's infobar content.

const { truncateString } = require("devtools/shared/inspector/utils");
const { MAX_STRING_LENGTH } = require("devtools/server/actors/highlighters/utils/accessibility");

add_task(async function() {
  const { client, walker, accessibility } =
    await initAccessibilityFrontForUrl(MAIN_DOMAIN + "doc_accessibility_infobar.html");

  const a11yWalker = await accessibility.getWalker();
  await accessibility.enable();

  info("Button front checks");
  await checkNameAndRole(walker, "#button", a11yWalker, "Accessible Button");

  info("Front with long name checks");
  await checkNameAndRole(walker, "#h1", a11yWalker,
    "Lorem ipsum dolor sit ame" + "\u2026" + "e et dolore magna aliqua.");

  await accessibility.disable();
  await waitForA11yShutdown();
  await client.close();
  gBrowser.removeCurrentTab();
});

/**
 * A helper function for testing the accessible's displayed name and roles.
 *
 * @param  {Object} walker
 *         The DOM walker.
 * @param  {String} querySelector
 *         The selector for the node to retrieve accessible from.
 * @param  {Object} a11yWalker
 *         The accessibility walker.
 * @param  {String} expectedName
 *         Expected string content for displaying the accessible's name.
 *         We are testing this in particular because name can be truncated.
 */
async function checkNameAndRole(walker, querySelector, a11yWalker, expectedName) {
  const node = await walker.querySelector(walker.rootNode, querySelector);
  const accessibleFront = await a11yWalker.getAccessibleFor(node);

  const { name, role } = accessibleFront;
  const onHighlightEvent = a11yWalker.once("highlighter-event");

  await a11yWalker.highlightAccessible(accessibleFront);
  const { options } = await onHighlightEvent;
  is(options.name, name, "Accessible highlight has correct name option");
  is(options.role, role, "Accessible highlight has correct role option");

  is(`"${truncateString(name, MAX_STRING_LENGTH)}"`, `"${expectedName}"`,
    "Accessible has correct displayed name.");
}