src/third_party/closure_library/closure/goog/ui/emoji/emojipicker_test.js

// Copyright 2007 The Closure Library Authors. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//      http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS-IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

goog.provide('goog.ui.emoji.EmojiPickerTest');
goog.setTestOnly('goog.ui.emoji.EmojiPickerTest');

goog.require('goog.dom.classlist');
goog.require('goog.events.EventHandler');
goog.require('goog.style');
goog.require('goog.testing.events');
goog.require('goog.testing.jsunit');
goog.require('goog.ui.Component');
goog.require('goog.ui.emoji.Emoji');
goog.require('goog.ui.emoji.EmojiPicker');
goog.require('goog.ui.emoji.SpriteInfo');
var handler;

function setUp() {
  handler = new goog.events.EventHandler();
}

function tearDown() {
  handler.removeAll();
}

// 26 emoji
var emojiGroup1 = [
  'Emoji 1',
  [
   ['../../demos/emoji/200.gif', 'std.200'],
   ['../../demos/emoji/201.gif', 'std.201'],
   ['../../demos/emoji/202.gif', 'std.202'],
   ['../../demos/emoji/203.gif', 'std.203'],
   ['../../demos/emoji/204.gif', 'std.204'],
   ['../../demos/emoji/200.gif', 'std.200'],
   ['../../demos/emoji/201.gif', 'std.201'],
   ['../../demos/emoji/202.gif', 'std.202'],
   ['../../demos/emoji/203.gif', 'std.203'],
   ['../../demos/emoji/204.gif', 'std.204'],
   ['../../demos/emoji/200.gif', 'std.200'],
   ['../../demos/emoji/201.gif', 'std.201'],
   ['../../demos/emoji/202.gif', 'std.202'],
   ['../../demos/emoji/203.gif', 'std.203'],
   ['../../demos/emoji/204.gif', 'std.204'],
   ['../../demos/emoji/200.gif', 'std.200'],
   ['../../demos/emoji/201.gif', 'std.201'],
   ['../../demos/emoji/202.gif', 'std.202'],
   ['../../demos/emoji/203.gif', 'std.203'],
   ['../../demos/emoji/204.gif', 'std.204'],
   ['../../demos/emoji/200.gif', 'std.200'],
   ['../../demos/emoji/201.gif', 'std.201'],
   ['../../demos/emoji/202.gif', 'std.202'],
   ['../../demos/emoji/203.gif', 'std.203'],
   ['../../demos/emoji/204.gif', 'std.204'],
   ['../../demos/emoji/200.gif', 'std.200']
  ]];

// 20 emoji
var emojiGroup2 = [
  'Emoji 2',
  [
   ['../../demos/emoji/200.gif', 'std.200'],
   ['../../demos/emoji/201.gif', 'std.201'],
   ['../../demos/emoji/202.gif', 'std.202'],
   ['../../demos/emoji/203.gif', 'std.203'],
   ['../../demos/emoji/204.gif', 'std.204'],
   ['../../demos/emoji/200.gif', 'std.200'],
   ['../../demos/emoji/201.gif', 'std.201'],
   ['../../demos/emoji/202.gif', 'std.202'],
   ['../../demos/emoji/203.gif', 'std.203'],
   ['../../demos/emoji/204.gif', 'std.204'],
   ['../../demos/emoji/200.gif', 'std.200'],
   ['../../demos/emoji/201.gif', 'std.201'],
   ['../../demos/emoji/202.gif', 'std.202'],
   ['../../demos/emoji/203.gif', 'std.203'],
   ['../../demos/emoji/204.gif', 'std.204'],
   ['../../demos/emoji/200.gif', 'std.200'],
   ['../../demos/emoji/201.gif', 'std.201'],
   ['../../demos/emoji/202.gif', 'std.202'],
   ['../../demos/emoji/203.gif', 'std.203'],
   ['../../demos/emoji/204.gif', 'std.204']
  ]];

// 20 emoji
var emojiGroup3 = [
  'Emoji 3',
  [
   ['../../demos/emoji/200.gif', 'std.200'],
   ['../../demos/emoji/201.gif', 'std.201'],
   ['../../demos/emoji/202.gif', 'std.202'],
   ['../../demos/emoji/203.gif', 'std.203'],
   ['../../demos/emoji/204.gif', 'std.204'],
   ['../../demos/emoji/200.gif', 'std.200'],
   ['../../demos/emoji/201.gif', 'std.201'],
   ['../../demos/emoji/202.gif', 'std.202'],
   ['../../demos/emoji/203.gif', 'std.203'],
   ['../../demos/emoji/204.gif', 'std.204'],
   ['../../demos/emoji/200.gif', 'std.200'],
   ['../../demos/emoji/201.gif', 'std.201'],
   ['../../demos/emoji/202.gif', 'std.202'],
   ['../../demos/emoji/203.gif', 'std.203'],
   ['../../demos/emoji/204.gif', 'std.204'],
   ['../../demos/emoji/200.gif', 'std.200'],
   ['../../demos/emoji/201.gif', 'std.201'],
   ['../../demos/emoji/202.gif', 'std.202'],
   ['../../demos/emoji/203.gif', 'std.203'],
   ['../../demos/emoji/204.gif', 'std.204']
  ]];

var sprite = '../../demos/emoji/sprite.png';
var sprite2 = '../../demos/emoji/sprite2.png';


/**
 * Creates a SpriteInfo object with the specified properties. If the image is
 * sprited via CSS, then only the first parameter needs a value. If the image
 * is sprited via metadata, then the first parameter should be left null.
 *
 * @param {?string} cssClass CSS class to properly display the sprited image.
 * @param {string=} opt_url Url of the sprite image.
 * @param {number=} opt_width Width of the image being sprited.
 * @param {number=} opt_height Height of the image being sprited.
 * @param {number=} opt_xOffset Positive x offset of the image being sprited
 *     within the sprite.
 * @param {number=} opt_yOffset Positive y offset of the image being sprited
 *     within the sprite.
 * @param {boolean=} opt_animated Whether the sprite info is for an animated
 *     emoji.
 */
function si(cssClass, opt_url, opt_width, opt_height, opt_xOffset,
            opt_yOffset, opt_animated) {
  return new goog.ui.emoji.SpriteInfo(cssClass, opt_url, opt_width,
      opt_height, opt_xOffset, opt_yOffset, opt_animated);
}

// Contains a mix of sprited emoji via css, sprited emoji via metadata, and
// non-sprited emoji
var spritedEmoji1 = [
  'Emoji 1',
  [
   ['../../demos/emoji/200.gif', 'std.200', si('SPRITE_200')],
   ['../../demos/emoji/201.gif', 'std.201', si('SPRITE_201')],
   ['../../demos/emoji/202.gif', 'std.202', si('SPRITE_202')],
   ['../../demos/emoji/203.gif', 'std.203', si('SPRITE_203')],
   ['../../demos/emoji/204.gif', 'std.204', si('SPRITE_204')],
   ['../../demos/emoji/200.gif', 'std.200', si('SPRITE_200')],
   ['../../demos/emoji/201.gif', 'std.201', si('SPRITE_201')],
   ['../../demos/emoji/202.gif', 'std.202', si('SPRITE_202')],
   ['../../demos/emoji/203.gif', 'std.203', si('SPRITE_203')],
   ['../../demos/emoji/2BE.gif', 'std.2BE',
    si(null, sprite, 18, 18, 36, 54)],
   ['../../demos/emoji/2BF.gif', 'std.2BF',
    si(null, sprite, 18, 18, 0, 126)],
   ['../../demos/emoji/2C0.gif', 'std.2C0',
    si(null, sprite, 18, 18, 18, 305)],
   ['../../demos/emoji/2C1.gif', 'std.2C1',
    si(null, sprite, 18, 18, 0, 287)],
   ['../../demos/emoji/2C2.gif', 'std.2C2',
    si(null, sprite, 18, 18, 18, 126)],
   ['../../demos/emoji/2C3.gif', 'std.2C3',
    si(null, sprite, 18, 18, 36, 234)],
   ['../../demos/emoji/2C4.gif', 'std.2C4',
    si(null, sprite, 18, 18, 36, 72)],
   ['../../demos/emoji/2C5.gif', 'std.2C5',
    si(null, sprite, 18, 18, 54, 54)],
   ['../../demos/emoji/200.gif', 'std.200'],
   ['../../demos/emoji/201.gif', 'std.201'],
   ['../../demos/emoji/202.gif', 'std.202'],
   ['../../demos/emoji/203.gif', 'std.203'],
   ['../../demos/emoji/204.gif', 'std.204'],
   ['../../demos/emoji/200.gif', 'std.200'],
   ['../../demos/emoji/201.gif', 'std.201'],
   ['../../demos/emoji/202.gif', 'std.202'],
   ['../../demos/emoji/203.gif', 'std.203']
  ]];

// This group contains a mix of sprited emoji via css, sprited emoji via
// metadata, and non-sprited emoji.
var spritedEmoji2 = [
  'Emoji 1',
  [
   ['../../demos/emoji/200.gif', 'std.200', si('SPRITE_200')],
   ['../../demos/emoji/201.gif', 'std.201', si('SPRITE_201')],
   ['../../demos/emoji/202.gif', 'std.202', si('SPRITE_202')],
   ['../../demos/emoji/203.gif', 'std.203', si('SPRITE_203')],
   ['../../demos/emoji/204.gif', 'std.204', si('SPRITE_204')],
   ['../../demos/emoji/200.gif', 'std.200', si('SPRITE_200')],
   ['../../demos/emoji/201.gif', 'std.201', si('SPRITE_201')],
   ['../../demos/emoji/202.gif', 'std.202', si('SPRITE_202')],
   ['../../demos/emoji/203.gif', 'std.203', si('SPRITE_203')],
   ['../../demos/emoji/2BE.gif', 'std.2BE',
    si(null, sprite, 18, 18, 36, 54)],
   ['../../demos/emoji/2BF.gif', 'std.2BF',
    si(null, sprite, 18, 18, 0, 126)],
   ['../../demos/emoji/2C0.gif', 'std.2C0',
    si(null, sprite, 18, 18, 18, 305)],
   ['../../demos/emoji/2C1.gif', 'std.2C1',
    si(null, sprite, 18, 18, 0, 287)],
   ['../../demos/emoji/2C2.gif', 'std.2C2',
    si(null, sprite, 18, 18, 18, 126)],
   ['../../demos/emoji/2C3.gif', 'std.2C3',
    si(null, sprite, 18, 18, 36, 234)],
   ['../../demos/emoji/2C4.gif', 'std.2C4',
    si(null, sprite, 18, 18, 36, 72)],
   ['../../demos/emoji/2C5.gif', 'std.2C5',
    si(null, sprite, 18, 18, 54, 54)],
   ['../../demos/emoji/2C6.gif', 'std.2C6'],
   ['../../demos/emoji/2C7.gif', 'std.2C7'],
   ['../../demos/emoji/2C8.gif', 'std.2C8'],
   ['../../demos/emoji/2C9.gif', 'std.2C9'],
   ['../../demos/emoji/2CA.gif', 'std.2CA',
    si(null, sprite2, 18, 20, 36, 72, 1)],
   ['../../demos/emoji/2E3.gif', 'std.2E3',
    si(null, sprite2, 18, 18, 0, 0, 1)],
   ['../../demos/emoji/2EF.gif', 'std.2EF',
    si(null, sprite2, 18, 20, 0, 300, 1)],
   ['../../demos/emoji/2F1.gif', 'std.2F1',
    si(null, sprite2, 18, 18, 0, 320, 1)]
  ]];

var emojiGroups = [emojiGroup1, emojiGroup2, emojiGroup3];

function testConstructAndRenderOnePageEmojiPicker() {
  var picker = new goog.ui.emoji.EmojiPicker('../../demos/emoji/none.gif');
  picker.addEmojiGroup(emojiGroup1[0], emojiGroup1[1]);
  picker.render();
  picker.dispose();
}

function testConstructAndRenderMultiPageEmojiPicker() {
  var picker = new goog.ui.emoji.EmojiPicker('../../demos/emoji/none.gif');
  picker.addEmojiGroup(emojiGroup1[0], emojiGroup1[1]);
  picker.addEmojiGroup(emojiGroup2[0], emojiGroup2[1]);
  picker.addEmojiGroup(emojiGroup3[0], emojiGroup3[1]);
  picker.render();
  picker.dispose();
}

function testExitDocumentCleansUpProperlyForSinglePageEmojiPicker() {
  var picker = new goog.ui.emoji.EmojiPicker('../../demos/emoji/none.gif');
  picker.addEmojiGroup(emojiGroup1[0], emojiGroup1[1]);
  picker.render();
  picker.enterDocument();
  picker.exitDocument();
  picker.dispose();
}

function testExitDocumentCleansUpProperlyForMultiPageEmojiPicker() {
  var picker = new goog.ui.emoji.EmojiPicker('../../demos/emoji/none.gif');
  picker.addEmojiGroup(emojiGroup1[0], emojiGroup1[1]);
  picker.addEmojiGroup(emojiGroup2[0], emojiGroup2[1]);
  picker.render();
  picker.enterDocument();
  picker.exitDocument();
  picker.dispose();
}

function testNumGroups() {
  var picker = new goog.ui.emoji.EmojiPicker('../../demos/emoji/none.gif');

  for (var i = 0; i < emojiGroups.length; i++) {
    picker.addEmojiGroup(emojiGroups[i][0], emojiGroups[i][1]);
  }

  assertTrue(picker.getNumEmojiGroups() == emojiGroups.length);
}

function testAdjustNumRowsIfNecessaryIsCorrect() {
  var picker = new goog.ui.emoji.EmojiPicker('../../demos/emoji/none.gif');
  picker.addEmojiGroup(emojiGroup1[0], emojiGroup1[1]);
  picker.setAutoSizeByColumnCount(true);
  picker.setNumColumns(5);
  assertEquals(5, picker.getNumColumns());
  assertEquals(goog.ui.emoji.EmojiPicker.DEFAULT_NUM_ROWS, picker.getNumRows());

  picker.adjustNumRowsIfNecessary_();

  // The emojiGroup has 26 emoji. ceil(26/5) should give 6 rows.
  assertEquals(6, picker.getNumRows());

  // Change col count to 10, should give 3 rows.
  picker.setNumColumns(10);
  picker.adjustNumRowsIfNecessary_();
  assertEquals(3, picker.getNumRows());

  // Add another gruop, with 20 emoji. Deliberately set the number of rows too
  // low. It should adjust it to three to accommodate the emoji in the first
  // group.
  picker.addEmojiGroup(emojiGroup2[0], emojiGroup2[1]);
  picker.setNumColumns(10);
  picker.setNumRows(2);
  picker.adjustNumRowsIfNecessary_();
  assertEquals(3, picker.getNumRows());
}


/**
 * Helper for testDelayedLoad. Returns true if the two paths end with the same
 * file.
 *
 * E.g., ('../../cool.gif', 'file:///home/usr/somewhere/cool.gif') --> true
 *
 * @param {string} path1 First url
 * @param {string} path2 Second url
 */
function checkPathsEndWithSameFile(path1, path2) {
  var pieces1 = path1.split('/');
  var file1 = pieces1[pieces1.length - 1];
  var pieces2 = path2.split('/');
  var file2 = pieces2[pieces2.length - 1];

  return file1 == file2;
}


/**
 * Gets the emoji URL from a palette element. Palette elements are divs or
 * imgs wrapped in an outer div. The returns the background-image if it's a div,
 * or the src attribute if it's an image.
 *
 * @param {Element} element Element to get the image url for
 * @return {string}
 */
function getImageUrl(element) {
  element = element.firstChild;  // get the wrapped element
  if (element.tagName == 'IMG') {
    return element.src;
  } else {
    var url = goog.style.getStyle(element, 'background-image');
    url = url.replace(/url\(/, '');
    url = url.replace(/\)/, '');
    return url;
  }
}


/**
 * Checks that the content of an emojipicker page is all images pointing to
 * the default img.
 *
 * @param {goog.ui.emoji.EmojiPalette} page The page of the picker to check
 * @param {string} defaultImgUrl The url of the default img
 */
function checkContentIsDefaultImg(page, defaultImgUrl) {
  var content = page.getContent();

  for (var i = 0; i < content.length; i++) {
    var url = getImageUrl(content[i]);
    assertTrue('img src should be ' + defaultImgUrl + ' but is ' +
               url,
               checkPathsEndWithSameFile(url, defaultImgUrl));
  }
}


/**
 * Checks that the content of an emojipicker page is the specified emoji and
 * the default img after the emoji are all used.
 *
 * @param {goog.ui.emoji.EmojiPalette} page The page of the picker to check
 * @param {Array<Array<string>>} emojiList List of emoji that should be in the
 *     palette
 * @param {string} defaultImgUrl The url of the default img
 */
function checkContentIsEmojiImages(page, emojiList, defaultImg) {
  var content = page.getContent();

  for (var i = 0; i < content.length; i++) {
    var url = getImageUrl(content[i]);
    if (i < emojiList.length) {
      assertTrue('Paths should end with the same file: ' +
                 url + ', ' + emojiList[i][0],
                 checkPathsEndWithSameFile(url, emojiList[i][0]));
    } else {
      assertTrue('Paths should end with the same file: ' +
                 url + ', ' + defaultImg,
                 checkPathsEndWithSameFile(url, defaultImg));
    }
  }
}


function testNonDelayedLoadPaletteCreationForSinglePagePicker() {
  var defaultImg = '../../demos/emoji/none.gif';
  var picker = new goog.ui.emoji.EmojiPicker(defaultImg);
  picker.setDelayedLoad(false);
  picker.addEmojiGroup(emojiGroup1[0], emojiGroup1[1]);
  picker.render();

  var page = picker.getPage(0);
  assertTrue('Page should be in the document but is not', page.isInDocument());

  // The content should be the actual emoji images now, with the remainder set
  // to the default img
  checkContentIsEmojiImages(page, emojiGroup1[1], defaultImg);

  picker.dispose();
}


function testNonDelayedLoadPaletteCreationForMultiPagePicker() {
  var defaultImg = '../../demos/emoji/none.gif';
  var picker = new goog.ui.emoji.EmojiPicker(defaultImg);
  picker.setDelayedLoad(false);

  for (var i = 0; i < emojiGroups.length; i++) {
    picker.addEmojiGroup(emojiGroups[i][0], emojiGroups[i][1]);
  }

  picker.render();

  for (var i = 0; i < emojiGroups.length; i++) {
    var page = picker.getPage(i);
    assertTrue('Page ' + i + ' should be in the document but is not',
               page.isInDocument());
    checkContentIsEmojiImages(page, emojiGroups[i][1], defaultImg);
  }

  picker.dispose();
}


function testDelayedLoadPaletteCreationForSinglePagePicker() {
  var defaultImg = '../../demos/emoji/none.gif';
  var picker = new goog.ui.emoji.EmojiPicker(defaultImg);
  picker.setDelayedLoad(true);
  picker.addEmojiGroup(emojiGroup1[0], emojiGroup1[1]);
  picker.render();

  // At this point the picker should have pages filled with the default img
  checkContentIsDefaultImg(picker.getPage(0), defaultImg);

  // Now load the images
  picker.loadImages();

  var page = picker.getPage(0);
  assertTrue('Page should be in the document but is not', page.isInDocument());

  // The content should be the actual emoji images now, with the remainder set
  // to the default img
  checkContentIsEmojiImages(page, emojiGroup1[1], defaultImg);

  picker.dispose();
}


function testGetSelectedEmoji() {
  var defaultImg = '../../demos/emoji/none.gif';
  var picker = new goog.ui.emoji.EmojiPicker(defaultImg);
  picker.setDelayedLoad(false);
  picker.addEmojiGroup(emojiGroup1[0], emojiGroup1[1]);
  picker.render();

  var palette = picker.getPage(0);

  // No emoji should be selected yet
  assertUndefined(palette.getSelectedEmoji());

  // Artificially select the first emoji
  palette.setSelectedIndex(0);

  // Now we should get the first emoji back. See emojiGroup1 above.
  var emoji = palette.getSelectedEmoji();
  assertEquals(emoji.getId(), 'std.200');
  assertEquals(emoji.getUrl(), '../../demos/emoji/200.gif');

  picker.dispose();
}


function testGetSelectedEmoji_click() {
  var defaultImg = '../../demos/emoji/none.gif';
  var picker = new goog.ui.emoji.EmojiPicker(defaultImg);
  picker.setDelayedLoad(false);
  picker.addEmojiGroup(emojiGroup1[0], emojiGroup1[1]);
  picker.render();

  var palette = picker.getPage(0);
  // Artificially select the an emoji
  palette.setSelectedIndex(2);
  var element = palette.getSelectedItem();
  palette.setSelectedIndex(0);  // Select a different emoji.

  var eventSent;
  handler.listen(picker, goog.ui.Component.EventType.ACTION,
      function(e) {
        eventSent = e;
      });
  goog.testing.events.fireClickSequence(element, undefined, undefined,
      { shiftKey: false });

  // Now we should get the first emoji back. See emojiGroup1 above.
  var emoji = picker.getSelectedEmoji();
  assertEquals(emoji.getId(), 'std.202');
  assertEquals(emoji.getUrl(), '../../demos/emoji/202.gif');
  assertFalse(eventSent.shiftKey);

  picker.dispose();
}


function testGetSelectedEmoji_shiftClick() {
  var defaultImg = '../../demos/emoji/none.gif';
  var picker = new goog.ui.emoji.EmojiPicker(defaultImg);
  picker.setDelayedLoad(false);
  picker.addEmojiGroup(emojiGroup1[0], emojiGroup1[1]);
  picker.render();

  var palette = picker.getPage(0);
  // Artificially select the an emoji
  palette.setSelectedIndex(3);
  var element = palette.getSelectedItem();
  palette.setSelectedIndex(0);  // Select a different emoji.

  var eventSent;
  handler.listen(picker, goog.ui.Component.EventType.ACTION,
      function(e) {
        eventSent = e;
      });
  goog.testing.events.fireClickSequence(element, undefined, undefined,
      { shiftKey: true });

  // Now we should get the first emoji back. See emojiGroup1 above.
  var emoji = picker.getSelectedEmoji();
  assertEquals(emoji.getId(), 'std.203');
  assertEquals(emoji.getUrl(), '../../demos/emoji/203.gif');
  assertTrue(eventSent.shiftKey);

  picker.dispose();
}


/**
 * Checks and verifies the structure of a non-progressively-rendered
 * emojipicker.
 *
 * @param {goog.ui.emoji.EmojiPalette} palette Emoji palette to check.
 * @param {Array<Array<string>>} emoji Emoji that should be in the palette.
 */
function checkStructureForNonProgressivePicker(palette, emoji) {
  // We can hackily check the items by selecting an item and then getting the
  // selected item.
  for (var i = 0; i < emoji[1].length; i++) {
    palette.setSelectedIndex(i);
    var emojiInfo = emoji[1][i];
    var cell = palette.getSelectedItem();
    var inner = /** @type {Element} */ (cell.firstChild);

    // Check that the cell is a div wrapped around something else, and that the
    // outer div contains the goomoji attribute
    assertEquals('The palette item should be a div wrapped around something',
        cell.tagName, 'DIV');
    assertNotNull('The outer div is not wrapped around another element', inner);
    assertEquals('The palette item should have the goomoji attribute',
        cell.getAttribute(goog.ui.emoji.Emoji.ATTRIBUTE), emojiInfo[1]);

    // Now check the contents of the cells
    var spriteInfo = emojiInfo[2];
    if (spriteInfo) {
      assertEquals(inner.tagName, 'DIV');
      var cssClass = spriteInfo.getCssClass();
      if (cssClass) {
        assertTrue('Sprite should have its CSS class set',
            goog.dom.classlist.contains(inner, cssClass));
      } else {
        checkPathsEndWithSameFile(
            goog.style.getStyle(inner, 'background-image'),
            spriteInfo.getUrl());
        assertEquals(spriteInfo.getWidthCssValue(),
            goog.style.getStyle(inner, 'width'));
        assertEquals(spriteInfo.getHeightCssValue(),
            goog.style.getStyle(inner, 'height'));
        assertEquals((spriteInfo.getXOffsetCssValue() + ' ' +
                      spriteInfo.getYOffsetCssValue()).replace(/px/g, '').
            replace(/pt/g, ''),
            goog.style.getStyle(inner,
                'background-position').replace(/px/g, '').
                replace(/pt/g, ''));
      }
    } else {
      // A non-sprited emoji is just an img
      assertEquals(inner.tagName, 'IMG');
      checkPathsEndWithSameFile(inner.src, emojiInfo[0]);
    }
  }
}


/**
 * Checks and verifies the structure of a progressively-rendered emojipicker.
 *
 * @param {goog.ui.emoji.EmojiPalette} palette Emoji palette to check.
 * @param {Array<Array<string>>} emoji Emoji that should be in the palette.
 */
function checkStructureForProgressivePicker(palette, emoji) {
  // We can hackily check the items by selecting an item and then getting the
  // selected item.
  for (var i = 0; i < emoji[1].length; i++) {
    palette.setSelectedIndex(i);
    var emojiInfo = emoji[1][i];
    var cell = palette.getSelectedItem();
    var inner = /** @type {Element} */ (cell.firstChild);

    // Check that the cell is a div wrapped around something else, and that the
    // outer div contains the goomoji attribute
    assertEquals('The palette item should be a div wrapped around something',
        cell.tagName, 'DIV');
    assertNotNull('The outer div is not wrapped around another element', inner);
    assertEquals('The palette item should have the goomoji attribute',
        cell.getAttribute(goog.ui.emoji.Emoji.ATTRIBUTE), emojiInfo[1]);

    // Now check the contents of the cells
    var spriteInfo = emojiInfo[2];
    if (spriteInfo) {
      var cssClass = spriteInfo.getCssClass();
      if (cssClass) {
        assertEquals('DIV', inner.tagName);
        assertTrue('Sprite should have its CSS class set',
            goog.dom.classlist.contains(inner, cssClass));
      } else {
        // There's an inner div wrapping an img tag
        assertEquals('DIV', inner.tagName);
        var img = inner.firstChild;
        assertNotNull('Div should be wrapping something', img);
        assertEquals('IMG', img.tagName);
        checkPathsEndWithSameFile(img.src, spriteInfo.getUrl());
        assertEquals(spriteInfo.getWidthCssValue(),
                     goog.style.getStyle(inner, 'width'));
        assertEquals(spriteInfo.getHeightCssValue(),
                     goog.style.getStyle(inner, 'height'));
        assertEquals(spriteInfo.getXOffsetCssValue().replace(/px/, '').
            replace(/pt/, ''),
            goog.style.getStyle(img, 'left').replace(/px/, '').
                replace(/pt/, ''));
        assertEquals(spriteInfo.getYOffsetCssValue().replace(/px/, '').
            replace(/pt/, ''),
            goog.style.getStyle(img, 'top').replace(/px/, '').
                replace(/pt/, ''));
      }
    } else {
      // A non-sprited emoji is just an img
      assertEquals(inner.tagName, 'IMG');
      checkPathsEndWithSameFile(inner.src, emojiInfo[0]);
    }
  }
}


/**
 * Checks and verifies the structure of a non-progressive fast-loading picker
 * after the animated emoji have loaded.
 *
 * @param {goog.ui.emoji.EmojiPalette} palette Emoji palette to check.
 * @param {Array<Array<string>>} emoji Emoji that should be in the palette.
 */
function checkPostLoadStructureForFastLoadNonProgressivePicker(palette, emoji) {
  for (var i = 0; i < emoji[1].length; i++) {
    palette.setSelectedIndex(i);
    var emojiInfo = emoji[1][i];
    var cell = palette.getSelectedItem();
    var inner = /** @type {Element} */ (cell.firstChild);

    // Check that the cell is a div wrapped around something else, and that the
    // outer div contains the goomoji attribute
    assertEquals('The palette item should be a div wrapped around something',
        cell.tagName, 'DIV');
    assertNotNull('The outer div is not wrapped around another element', inner);
    assertEquals('The palette item should have the goomoji attribute',
        cell.getAttribute(goog.ui.emoji.Emoji.ATTRIBUTE), emojiInfo[1]);

    // Now check the contents of the cells
    var url = emojiInfo[0];   // url of the animated emoji
    var spriteInfo = emojiInfo[2];
    if (spriteInfo) {
      assertEquals(inner.tagName, 'DIV');
      if (spriteInfo.isAnimated()) {
        var img = new Image();
        img.src = url;
        checkPathsEndWithSameFile(
            goog.style.getStyle(inner, 'background-image'),
            url);
        assertEquals(String(img.width), goog.style.getStyle(inner, 'width').
            replace(/px/g, '').replace(/pt/g, ''));
        assertEquals(String(img.height), goog.style.getStyle(inner, 'height').
            replace(/px/g, '').replace(/pt/g, ''));
        assertEquals('0 0', goog.style.getStyle(inner,
            'background-position').replace(/px/g, '').
            replace(/pt/g, ''));
      } else {
        var cssClass = spriteInfo.getCssClass();
        if (cssClass) {
          assertTrue('Sprite should have its CSS class set',
              goog.dom.classlist.contains(inner, cssClass));
        } else {
          checkPathsEndWithSameFile(
              goog.style.getStyle(inner, 'background-image'),
              spriteInfo.getUrl());
          assertEquals(spriteInfo.getWidthCssValue(),
              goog.style.getStyle(inner, 'width'));
          assertEquals(spriteInfo.getHeightCssValue(),
              goog.style.getStyle(inner, 'height'));
          assertEquals((spriteInfo.getXOffsetCssValue() + ' ' +
                        spriteInfo.getYOffsetCssValue()).replace(/px/g, '').
              replace(/pt/g, ''),
              goog.style.getStyle(inner,
                  'background-position').replace(/px/g, '').
                  replace(/pt/g, ''));
        }
      }
    } else {
      // A non-sprited emoji is just an img
      assertEquals(inner.tagName, 'IMG');
      checkPathsEndWithSameFile(inner.src, emojiInfo[0]);
    }
  }
}


/**
 * Checks and verifies the structure of a progressive fast-loading picker
 * after the animated emoji have loaded.
 *
 * @param {goog.ui.emoji.EmojiPalette} palette Emoji palette to check.
 * @param {Array<Array<string>>} emoji Emoji that should be in the palette.
 */
function checkPostLoadStructureForFastLoadProgressivePicker(palette, emoji) {
  for (var i = 0; i < emoji[1].length; i++) {
    palette.setSelectedIndex(i);
    var emojiInfo = emoji[1][i];
    var cell = palette.getSelectedItem();
    var inner = /** @type {Element} */ (cell.firstChild);

    // Check that the cell is a div wrapped around something else, and that the
    // outer div contains the goomoji attribute
    assertEquals('The palette item should be a div wrapped around something',
        cell.tagName, 'DIV');
    assertNotNull('The outer div is not wrapped around another element', inner);
    assertEquals('The palette item should have the goomoji attribute',
        cell.getAttribute(goog.ui.emoji.Emoji.ATTRIBUTE), emojiInfo[1]);

    // Now check the contents of the cells
    var url = emojiInfo[0];  // url of the animated emoji
    var spriteInfo = emojiInfo[2];
    if (spriteInfo) {
      if (spriteInfo.isAnimated()) {
        var testImg = new Image();
        testImg.src = url;
        var img = inner.firstChild;
        checkPathsEndWithSameFile(img.src, url);
        assertEquals(testImg.width, img.width);
        assertEquals(testImg.height, img.height);
        assertEquals('0', goog.style.getStyle(img, 'left').replace(/px/g, '').
            replace(/pt/g, ''));
        assertEquals('0', goog.style.getStyle(img, 'top').replace(/px/g, '').
            replace(/pt/g, ''));
      } else {
        var cssClass = spriteInfo.getCssClass();
        if (cssClass) {
          assertEquals('DIV', inner.tagName);
          assertTrue('Sprite should have its CSS class set',
              goog.dom.classlist.contains(inner, cssClass));
        } else {
          // There's an inner div wrapping an img tag
          assertEquals('DIV', inner.tagName);
          var img = inner.firstChild;
          assertNotNull('Div should be wrapping something', img);
          assertEquals('IMG', img.tagName);
          checkPathsEndWithSameFile(img.src, spriteInfo.getUrl());
          assertEquals(spriteInfo.getWidthCssValue(),
              goog.style.getStyle(inner, 'width'));
          assertEquals(spriteInfo.getHeightCssValue(),
              goog.style.getStyle(inner, 'height'));
          assertEquals(spriteInfo.getXOffsetCssValue().replace(/px/, '').
              replace(/pt/, ''),
              goog.style.getStyle(img, 'left').replace(/px/, '').
                  replace(/pt/, ''));
          assertEquals(spriteInfo.getYOffsetCssValue().replace(/px/, '').
              replace(/pt/, ''),
              goog.style.getStyle(img, 'top').replace(/px/, '').
                  replace(/pt/, ''));
        }
      }
    } else {
      // A non-sprited emoji is just an img
      assertEquals(inner.tagName, 'IMG');
      checkPathsEndWithSameFile(inner.src, emojiInfo[0]);
    }
  }
}


function testPreLoadCellConstructionForFastLoadingNonProgressive() {
  var defaultImg = '../../demos/emoji/none.gif';
  var picker = new goog.ui.emoji.EmojiPicker(defaultImg);
  picker.setDelayedLoad(false);
  picker.setManualLoadOfAnimatedEmoji(true);
  picker.setProgressiveRender(false);
  picker.addEmojiGroup(spritedEmoji2[0], spritedEmoji2[1]);
  picker.render();

  var palette = picker.getPage(0);

  checkStructureForNonProgressivePicker(palette, spritedEmoji2);

  picker.dispose();
}


function testPreLoadCellConstructionForFastLoadingProgressive() {
  var defaultImg = '../../demos/emoji/none.gif';
  var picker = new goog.ui.emoji.EmojiPicker(defaultImg);
  picker.setDelayedLoad(false);
  picker.setManualLoadOfAnimatedEmoji(true);
  picker.setProgressiveRender(true);
  picker.addEmojiGroup(spritedEmoji2[0], spritedEmoji2[1]);
  picker.render();

  var palette = picker.getPage(0);

  checkStructureForProgressivePicker(palette, spritedEmoji2);

  picker.dispose();
}


function testCellConstructionForNonProgressiveRenderingSpriting() {
  var defaultImg = '../../demos/emoji/none.gif';
  var picker = new goog.ui.emoji.EmojiPicker(defaultImg);
  picker.setDelayedLoad(false);
  picker.addEmojiGroup(spritedEmoji1[0], spritedEmoji1[1]);
  picker.render();

  var palette = picker.getPage(0);

  checkStructureForNonProgressivePicker(palette, spritedEmoji1);
  picker.dispose();
}


function testCellConstructionForProgressiveRenderingSpriting() {
  var defaultImg = '../../demos/emoji/none.gif';
  var picker = new goog.ui.emoji.EmojiPicker(defaultImg);
  picker.setDelayedLoad(false);
  picker.setProgressiveRender(true);
  picker.addEmojiGroup(spritedEmoji1[0], spritedEmoji1[1]);
  picker.render();

  var palette = picker.getPage(0);

  checkStructureForProgressivePicker(palette, spritedEmoji1);

  picker.dispose();
}


function testDelayedLoadPaletteCreationForMultiPagePicker() {
  var defaultImg = '../../demos/emoji/none.gif';
  var picker = new goog.ui.emoji.EmojiPicker(defaultImg);
  picker.setDelayedLoad(true);

  for (var i = 0; i < emojiGroups.length; i++) {
    picker.addEmojiGroup(emojiGroups[i][0], emojiGroups[i][1]);
  }

  picker.render();

  // At this point the picker should have pages filled with the default img
  for (var i = 0; i < emojiGroups.length; i++) {
    checkContentIsDefaultImg(picker.getPage(i), defaultImg);
  }

  // Now load the images
  picker.loadImages();

  // The first page should be loaded
  var page = picker.getPage(0);
  assertTrue('Page ' + i + ' should be in the document but is not',
             page.isInDocument());
  checkContentIsEmojiImages(page, emojiGroups[0][1], defaultImg);

  // The other pages should all be filled with the default img since they are
  // lazily loaded
  for (var i = 1; i < 3; i++) {
    checkContentIsDefaultImg(picker.getPage(i), defaultImg);
  }

  // Activate the other two pages so that their images get loaded, and check
  // that they're now loaded correctly
  var tabPane = picker.getTabPane();

  for (var i = 1; i < 3; i++) {
    tabPane.setSelectedIndex(i);
    page = picker.getPage(i);
    assertTrue(page.isInDocument());
    checkContentIsEmojiImages(page, emojiGroups[i][1], defaultImg);
  }

  picker.dispose();
}