text: describe('Option', function() {
      var url = 'https://artplayer.org/assets/sample/video.mp4';
  
      afterEach(function() {
          [...Artplayer.instances].forEach(art => {
              art.destroy(true);
          });
      });
  
      it('Throw error when multiple instances on the same dom element', function() {
          expect(function() {
              new Artplayer({ container: '.sample1', url: url });
              new Artplayer({ container: '.sample1', url: url });
          }).to.throw(/Cannot mount multiple instances on the same dom element/);
      });
  
      it('Throw error when container is not a dom element or selector', function() {
          expect(function() {
              new Artplayer({
                  container: null,
                  url: url,
              });
          }).to.throw(/option.container require \'string\' or \'Element\' type/);
      });
  });
  