getTime(date, roundUp) {
   if (_.isString(date)) {
     date = dateMath.parse(date, roundUp);
   }
   return Math.ceil(date.valueOf() * 1e6);
 }

 timeRange: jest.fn(() => {
   return {
     from: dateMath.parse(this.time.from, false),
     to: dateMath.parse(this.time.to, true),
   };
 }),

 it('should round now to the end of the ' + span, function () {
   expect(dateMath.parse('now/' + span, true).format(format)).to.eql(now.endOf(span).format(format));
 });

 timeRange: () => {
   return {
     from: dateMath.parse(timeSrv.time.from, false),
     to: dateMath.parse(timeSrv.time.to, true),
   };
 },