Add unit tests (#11048)
Add unit tests (#11048)

jessecarterMOOSE/moose,YaqiWang/moose,lindsayad/moose,jessecarterMOOSE/moose,idaholab/moose,jessecarterMOOSE/moose,harterj/moose,YaqiWang/moose,SudiptaBiswas/moose,dschwen/moose,andrsd/moose,milljm/moose,YaqiWang/moose,dschwen/moose,andrsd/moose,milljm/moose,SudiptaBiswas/moose,jessecarterMOOSE/moose,lindsayad/moose,laagesen/moose,milljm/moose,sapitts/moose,idaholab/moose,laagesen/moose,sapitts/moose,laagesen/moose,bwspenc/moose,nuclear-wizard/moose,bwspenc/moose,laagesen/moose,jessecarterMOOSE/moose,bwspenc/moose,permcody/moose,sapitts/moose,permcody/moose,lindsayad/moose,sapitts/moose,dschwen/moose,harterj/moose,andrsd/moose,permcody/moose,lindsayad/moose,milljm/moose,sapitts/moose,dschwen/moose,milljm/moose,bwspenc/moose,bwspenc/moose,andrsd/moose,lindsayad/moose,harterj/moose,harterj/moose,nuclear-wizard/moose,SudiptaBiswas/moose,dschwen/moose,idaholab/moose,idaholab/moose,idaholab/moose,SudiptaBiswas/moose,harterj/moose,YaqiWang/moose,SudiptaBiswas/moose,laagesen/moose,permcody/moose,nuclear-wizard/moose,andrsd/moose,nuclear-wizard/moose