@quantlab/handsontable/test/unit/helpers/dom/Event.spec.js

Spreadsheet-like data grid editor that provides copy/paste functionality compatible with Excel/Google Docs

import {isLeftClick, isRightClick} from 'handsontable/helpers/dom/event';

describe('DomEvent helper', () => {
  //
  // Handsontable.dom.isLeftClick
  //
  describe('isLeftClick', () => {
    it('should return true for valid mouse events', () => {
      expect(isLeftClick({button: 0})).toBe(true);
    });

    it('should return false for invalid mouse events', () => {
      expect(isLeftClick({button: '0'})).toBe(false);
      expect(isLeftClick({button: 1})).toBe(false);
      expect(isLeftClick({button: 2})).toBe(false);
      expect(isLeftClick({button: 3})).toBe(false);
      expect(isLeftClick({button: null})).toBe(false);
      expect(isLeftClick({button: void 0})).toBe(false);
      expect(isLeftClick({})).toBe(false);
    });
  });
  //
  // Handsontable.dom.isRightClick
  //
  describe('isRightClick', () => {
    it('should return true for valid mouse events', () => {
      expect(isRightClick({button: 2})).toBe(true);
    });

    it('should return false for invalid mouse events', () => {
      expect(isRightClick({button: '0'})).toBe(false);
      expect(isRightClick({button: 1})).toBe(false);
      expect(isRightClick({button: -2})).toBe(false);
      expect(isRightClick({button: 3})).toBe(false);
      expect(isRightClick({button: null})).toBe(false);
      expect(isRightClick({button: void 0})).toBe(false);
      expect(isRightClick({})).toBe(false);
    });
  });
});