old_contents: 'use strict';
  
  import registry from '../../src/registry';
  import skate from '../../src/skate';
  
  describe('Registry', function () {
    afterEach(function () {
      registry.clear();
    });
  
    it('should set definitions', function () {
      registry.set('test', {});
      try {
        registry.set('test', {});
        assert(false);
      } catch (e) {}
    });
  
    it('should clear definitions', function () {
      registry.set('test', {});
      registry.clear();
      registry.set('test', {});
    });
  
    it('should return definitions for a given element', function () {
      var definition1 = { type: skate.type.ELEMENT };
      var definition2 = { type: skate.type.ATTRIBUTE };
      var definition3 = { type: skate.type.CLASSNAME };
      var definitions;
      var element = document.createElement('test1');
  
      element.setAttribute('test2', '');
      element.classList.add('test3');
  
      registry.set('test1', definition1);
      registry.set('test2', definition2);
      registry.set('test3', definition3);
  
      definitions = registry.getForElement(element);
  
      expect(definitions.length).to.equal(3);
      expect(definitions[0]).to.equal(definition1);
      expect(definitions[1]).to.equal(definition2);
      expect(definitions[2]).to.equal(definition3);
    });
  });
  
new_contents: 'use strict';
  
  import registry from '../../src/registry';
  import skate from '../../src/skate';
  
  describe('Registry', function () {
    afterEach(function () {
      registry.clear();
    });
  
    it('should set definitions', function () {
      registry.set('test', {});
      try {
        registry.set('test', {});
        assert(false);
      } catch (e) {}
    });
  
    it('should clear definitions', function () {
      registry.set('test', {});
      registry.clear();
      registry.set('test', {});
    });
  
    it('should return definitions for a given element', function () {
      var definition1 = { type: skate.type.ELEMENT };
      var definition2 = { type: skate.type.ATTRIBUTE };
      var definition3 = { type: skate.type.CLASSNAME };
      var definitions;
      var element = document.createElement('test1');
  
      element.setAttribute('test2', '');
      element.className += ' test3';
  
      registry.set('test1', definition1);
      registry.set('test2', definition2);
      registry.set('test3', definition3);
  
      definitions = registry.getForElement(element);
  
      expect(definitions.length).to.equal(3);
      expect(definitions[0]).to.equal(definition1);
      expect(definitions[1]).to.equal(definition2);
      expect(definitions[2]).to.equal(definition3);
    });
  });
  
subject: Fix test that uses classList (which is IE >= 10).