Conversation so far:
Who are the line up members of the band?
CANNOTANSWER.
In this year did any of the member left the band?
success of The Ritual did not put an end to the tensions within the band.
What songs are popular in this year?
So Far, So Good...
So What! tour in Europe, and toured the United States with the likes of Death Angel.
Are there any other songs that made them popular?
Mortal Sin, Nuclear Assault and Savatage.
Did they had any rewards?
CANNOTANSWER.

Question: How successful did they get on their songs?
Self-contained rewrite: How successful did Testament get on their songs?