text: describe('url helper', function() {
    it("url helper", function() {
      var href = Handlebars.helpers.url.call({}, '/a/{{b}}', {'expand-tokens': true});
      expect(href).to.equal('#/a/');
      href = Handlebars.helpers.url.call({b: 'b'}, '/a/{{b}}', {'expand-tokens': true});
      expect(href).to.equal('#/a/b');
      href = Handlebars.helpers.url.call({b: 'c'}, '/a/{{b}}', {'expand-tokens': true});
      expect(href).to.equal('#/a/c');
  
      href = Handlebars.helpers.url('a', 'c', {});
      expect(href).to.equal('#a/c');
    });
  });
  