Testing Jessie in a chroot?

[Marc Shapiro <marcnshap@gmail.com>]

I am still running Wheezy and would like to test Jessie before 
committing to it.  Is a chroot a viable method?  If so, can someone 
point me to a link on how best to set it up and use it.  I will want to 
test it with, and without, systemd.  Would a dual boot be a better way 
to test this?

Marc