NBT keys of chests do not work properly

NBT keys do not work properly in case of chests. When you do create a chest with such command:

setblock #x #y #z chest 0 replace {Items:[{Slot:0b,id:torch}]}

And test it with command:

testforblock #x #y #z chest 0 {Items:[{Slot:0b,id:torch}]}

It would not return true value. It will show you this:

The block at #x,#y,#z did not have the required NBT keys.

Hope you'll do something with it.