import Picker from '../../../ui/picker';

describe('Picker', function() {
  beforeEach(function() {
    this.container.innerHTML =
      '<select><option selected>0</option><option value="1">1</option></select>';
    this.pickerSelectorInstance = new Picker(this.container.firstChild);
    this.pickerSelector = this.container.querySelector('.ql-picker');
  });

  it('initialization', function() {
    expect(this.container.querySelector('.ql-picker')).toBeTruthy();
    expect(this.container.querySelector('.ql-active')).toBeFalsy();
    expect(
      this.container.querySelector('.ql-picker-item.ql-selected').outerHTML,
    ).toEqualHTML(
      '<span tabindex="0" role="button" class="ql-picker-item ql-selected" data-label="0"></span>',
    );
    expect(
      this.container.querySelector('.ql-picker-item:not(.ql-selected)')
        .outerHTML,
    ).toEqualHTML(
      '<span tabindex="0" role="button" class="ql-picker-item" data-value="1" data-label="1"></span>',
    );
  });

  it('escape charcters', function() {
    const select = document.createElement('select');
    const option = document.createElement('option');
    this.container.appendChild(select);
    select.appendChild(option);
    let value = '"Helvetica Neue", \'Helvetica\', sans-serif';
    option.value = value;
    value = value.replace(/"/g, '\\"');
    expect(select.querySelector(`option[value="${value}"]`)).toEqual(option);
  });

  it('label is initialized with the correct aria attributes', function() {
    expect(
      this.pickerSelector
        .querySelector('.ql-picker-label')
        .getAttribute('aria-expanded'),
    ).toEqual('false');
    const optionsId = this.pickerSelector.querySelector('.ql-picker-options')
      .id;
    expect(
      this.pickerSelector
        .querySelector('.ql-picker-label')
        .getAttribute('aria-controls'),
    ).toEqual(optionsId);
  });

  it('options container is initialized with the correct aria attributes', function() {
    expect(
      this.pickerSelector
        .querySelector('.ql-picker-options')
        .getAttribute('aria-hidden'),
    ).toEqual('true');

    const ariaControlsLabel = this.pickerSelector
      .querySelector('.ql-picker-label')
      .getAttribute('aria-controls');
    expect(this.pickerSelector.querySelector('.ql-picker-options').id).toEqual(
      ariaControlsLabel,
    );
    expect(
      this.pickerSelector.querySelector('.ql-picker-options').tabIndex,
    ).toEqual(-1);
  });

  it('aria attributes toggle correctly when the picker is opened via enter key', function() {
    const pickerLabel = this.pickerSelector.querySelector('.ql-picker-label');
    pickerLabel.dispatchEvent(new KeyboardEvent('keydown', { key: 'Enter' }));
    expect(pickerLabel.getAttribute('aria-expanded')).toEqual('true');
    expect(
      this.pickerSelector
        .querySelector('.ql-picker-options')
        .getAttribute('aria-hidden'),
    ).toEqual('false');
  });

  it('aria attributes toggle correctly when the picker is opened via mousedown', function() {
    const pickerLabel = this.pickerSelector.querySelector('.ql-picker-label');
    pickerLabel.dispatchEvent(
      new Event('mousedown', {
        bubbles: true,
        cancelable: true,
      }),
    );

    expect(pickerLabel.getAttribute('aria-expanded')).toEqual('true');
    expect(
      this.pickerSelector
        .querySelector('.ql-picker-options')
        .getAttribute('aria-hidden'),
    ).toEqual('false');
  });

  it('aria attributes toggle correctly when an item is selected via click', function() {
    const pickerLabel = this.pickerSelector.querySelector('.ql-picker-label');
    pickerLabel.click();

    const pickerItem = this.pickerSelector.querySelector('.ql-picker-item');
    pickerItem.click();

    expect(pickerLabel.getAttribute('aria-expanded')).toEqual('false');
    expect(
      this.pickerSelector
        .querySelector('.ql-picker-options')
        .getAttribute('aria-hidden'),
    ).toEqual('true');
    expect(pickerLabel.textContent.trim()).toEqual(
      pickerItem.textContent.trim(),
    );
  });

  it('aria attributes toggle correctly when an item is selected via enter', function() {
    const pickerLabel = this.pickerSelector.querySelector('.ql-picker-label');
    pickerLabel.click();
    const pickerItem = this.pickerSelector.querySelector('.ql-picker-item');
    pickerItem.dispatchEvent(new KeyboardEvent('keydown', { key: 'Enter' }));
    expect(pickerLabel.getAttribute('aria-expanded')).toEqual('false');
    expect(
      this.pickerSelector
        .querySelector('.ql-picker-options')
        .getAttribute('aria-hidden'),
    ).toEqual('true');
    expect(pickerLabel.textContent.trim()).toEqual(
      pickerItem.textContent.trim(),
    );
  });

  it('aria attributes toggle correctly when the picker is closed via clicking on the label again', function() {
    const pickerLabel = this.pickerSelector.querySelector('.ql-picker-label');
    pickerLabel.click();
    pickerLabel.click();
    expect(pickerLabel.getAttribute('aria-expanded')).toEqual('false');
    expect(
      this.pickerSelector
        .querySelector('.ql-picker-options')
        .getAttribute('aria-hidden'),
    ).toEqual('true');
  });

  it('aria attributes toggle correctly when the picker is closed via escaping out of it', function() {
    const pickerLabel = this.pickerSelector.querySelector('.ql-picker-label');
    pickerLabel.click();
    pickerLabel.dispatchEvent(new KeyboardEvent('keydown', { key: 'Escape' }));
    expect(pickerLabel.getAttribute('aria-expanded')).toEqual('false');
    expect(
      this.pickerSelector
        .querySelector('.ql-picker-options')
        .getAttribute('aria-hidden'),
    ).toEqual('true');
  });

  afterEach(function() {
    this.pickerSelectorInstance = null;
  });
});