Declaration meant test viewed differently (9)
I believe the answer is:
statement
'declaration' is the definition.
(I've seen this before)
'meant test viewed differently' is the wordplay.
'viewed differently' indicates an anagram (I've seen this in other clues).
'meant'+'test'='meanttest'
'meanttest' is an anagram of 'STATEMENT'.
(Other definitions for statement that I've seen before include "Account given to a court" , "Assertion" , "What bank provides" , "Testament about something said" , "presentation" .)