How to use a space in /etc/fstab

Issue

o A filesystem mountpoint contains a space, for example /test directory

o It can be successfully mounted manually with a command like so:

mount /dev/mapper/testvg-testlv /"test directory"

o However adding an entry like so in /etc/fstab results in a parsing error.

Entry from /etc/fstab:
 /dev/mapper/testvg-testlv /"test directory" xfs defaults 0 0

 # mount /test\ directory
        mount: /etc/fstab: parse error at line 17 -- ignored
        mount: /test directory: can't find in /etc/fstab.