insert should take a new string and insert it into the existing string at the given index
swap, remove and removePass should work as though list() was called before and joinString() was called after
strvar.funcName(x)
# should be the same as
strvar.list().funcName(x).joinStr()
swap
insert
remove
removePass
insert
should take a new string and insert it into the existing string at the given indexswap
,remove
andremovePass
should work as thoughlist()
was called before andjoinString()
was called after