hunk.code_window:   })
     it('accepts string as a date', function() {
       var date = startOfHour('2014-12-01T12:35:00')
       // We use Date.UTC here, because string '2014-12-01T12:35:00' is in UTC format
       expect(date).to.be.eql(new Date(Date.UTC(2014, 11, 1, 12, 0)))
     })
   })
  
hunk.labels: keep keep keep replace replace replace keep keep keep
hunk.after_edit:     var date = new Date(2014, 11 /* Dec */, 1, 12, 45).toISOString()
       var result = startOfHour(date)
       expect(result).to.be.eql(new Date(2014, 11, 1, 12, 0))
  
hunk.file_path: src/__tests__/start_of_hour_test.js
hunk.type: replace
file: /**
   * Adds specified number of years to passed date.
   * @param {data|string} dirtyDate
   * @param {number} amount
   * @returns {date} new date
   */
  var addYears = function(dirtyDate, amount) {
    var date = new Date(dirtyDate)
    date.setFullYear(date.getFullYear() + amount)
    return date
  }
  
  module.exports = addYears
  
  