added tests for signDim and smartRound
added tests for signDim and smartRound

qqming113/datawrapper,datafunk/datawrapper,devinit/datawrapper,elaOnMars/datawrapper,washingtonpost/datawrapper,datafunk/datawrapper,elaOnMars/datawrapper,motherjones/datawrapper,datafunk/datawrapper,robmcloughlin/Insights,washingtonpost/datawrapper,motherjones/datawrapper,washingtonpost/datawrapper,grepman/datawrapper,robmcloughlin/Insights,grepman/datawrapper,devinit/datawrapper,ThuyNTran/datawrapper,rubensfernando/datawrapper,devinit/datawrapper,rubensfernando/datawrapper,rubensfernando/datawrapper,ThuyNTran/datawrapper,grepman/datawrapper,elaOnMars/datawrapper,grepman/datawrapper,motherjones/datawrapper,elaOnMars/datawrapper,devinit/datawrapper,elaOnMars/datawrapper,qqming113/datawrapper,qqming113/datawrapper,kendrick-k/datawrapper,robmcloughlin/Insights,kendrick-k/datawrapper,plusgut/datawrapper,qqming113/datawrapper,motherjones/datawrapper,motherjones/datawrapper,kendrick-k/datawrapper,washingtonpost/datawrapper,ThuyNTran/datawrapper,qqming113/datawrapper,washingtonpost/datawrapper,grepman/datawrapper,kendrick-k/datawrapper,rubensfernando/datawrapper,motherjones/datawrapper,grepman/datawrapper,robmcloughlin/Insights,ThuyNTran/datawrapper,datafunk/datawrapper,elaOnMars/datawrapper,datafunk/datawrapper,kendrick-k/datawrapper,plusgut/datawrapper,devinit/datawrapper,datafunk/datawrapper,plusgut/datawrapper,qqming113/datawrapper,rubensfernando/datawrapper,kendrick-k/datawrapper,ThuyNTran/datawrapper,devinit/datawrapper,washingtonpost/datawrapper,ThuyNTran/datawrapper,plusgut/datawrapper,robmcloughlin/Insights