test_that("BackRateOfSpread", {
  checkData('BackRateOfSpread',
            back_rate_of_spread,
            list(data.table(FUELTYPE=FUELTYPE),
                 data.table(FFMC=FFMC),
                 data.table(BUI=BUI),
                 data.table(WSV=WSV),
                 data.table(FMC=FMC),
                 data.table(SFC=SFC),
                 data.table(PC=PC),
                 data.table(PDF=PDF),
                 data.table(CC=CC),
                 data.table(CBH=CBH)))
})