it('should throw an exception if coordinates cannot be parsed', async function () {
   const gesture = {
     action: 'moveTo',
     options: {
       x: 'a',
       y: 300
     }
   };
   try {
     await driver.getCoordinates(gesture);
     sinon.assert.fail('An exception is expected to be thrown');
   } catch (e) {
     // this is expected
   }
 });