import {isInput, closestDown, getParent} from 'handsontable/helpers/dom/element';

describe('DomElement helper', () => {
  //
  // Handsontable.helper.isInput
  //
  describe('isInput', () => {
    it('should return true for inputs, selects, and textareas', () => {
      expect(isInput(document.createElement('input'))).toBe(true);
      expect(isInput(document.createElement('select'))).toBe(true);
      expect(isInput(document.createElement('textarea'))).toBe(true);
    });

    it('should return true for contentEditable elements', () => {
      var div = document.createElement('div');

      div.contentEditable = 'true';

      expect(isInput(div)).toBe(true);
    });
  });

  //
  // Handsontable.helper.closestDown
  //
  describe('closestDown', () => {
    var test1 = '<div class="wrapper1"><table><tbody><tr><td class="test1">test1</td></tr></tbody></table></div>';
    var test2 = `<div class="wrapper2"><table><tbody><tr><td class="test2">test2${test1}</td></tr></tbody></table></div>`;

    it('should return last TD element (starting from last child element)', () => {
      var wrapper = document.createElement('div');

      wrapper.innerHTML = test2;
      var td1 = wrapper.querySelector('.test1');
      var td2 = wrapper.querySelector('.test2');

      expect(closestDown(td1, ['TD'])).toBe(td2);
    });

    it('should return proper value depends on passed `until` element', () => {
      var td = document.createElement('td');

      td.innerHTML = test2;
      var wrapper2 = td.querySelector('.wrapper2');

      expect(closestDown(wrapper2, ['TD'])).toBe(td);
      expect(closestDown(wrapper2, ['TD'], wrapper2.firstChild)).toBe(null);
    });
  });

  //
  // Handsontable.helper.getParent
  //
  describe('getParent', () => {
    var element = null;

    beforeEach(() => {
      element = document.createElement('div');
      element.innerHTML = '<div id="a1"><ul id="a2"></ul><ul id="b2"><li id="a3"><span id="a4">HELLO</span></li></ul></div>';
    });

    afterEach(() => {
      element = null;
    });

    it('should return the node parent only from the one level deep', () => {
      expect(getParent(element.querySelector('#a4'))).toBe(element.querySelector('#a3'));
      expect(getParent(element.querySelector('#a1'))).toBe(element);
    });

    it('should return the node parent from the defined level deep', () => {
      expect(getParent(element.querySelector('#a4'), 0)).toBe(element.querySelector('#a3'));
      expect(getParent(element.querySelector('#a4'), 1)).toBe(element.querySelector('#b2'));
      expect(getParent(element.querySelector('#a4'), 2)).toBe(element.querySelector('#a1'));
      expect(getParent(element.querySelector('#a4'), 3)).toBe(element);
      expect(getParent(element.querySelector('#a4'), 4)).toBe(null);
      expect(getParent(element.querySelector('#a4'), 5)).toBe(null);
      expect(getParent(element.querySelector('#a2'), 0)).toBe(element.querySelector('#a1'));
      expect(getParent(element.querySelector('#a2'), 1)).toBe(element);
    });
  });
});