SQL & PL/SQL

hi guys, was just wondering can i test for a null value in a case statement ie

case....
when 'test 1' then....print '1'
when null then.. print 'null'
when 'test 2' then....print '1'
else print 'fell into else'

IF my value was null would it print null or fall into the else section and print else.

Any help greatly appreciate.

Thank you.