The popularity of diet fads is a 'testimony to' the fact that people want a quick fix for their health and weight problems.
It is 'testimony to' her courage and persistence that she worked for so long in the face of such adversity.
There were contradictions in her 'testimony'.
(..) I'm glad. Just in time. In the matter of the Southern Christian Leadership Conference v. The state of Alabama, I will now hear testimony from the plaintiffs. Mr. Gray. Your Honor, you will hear testimony from the victims who were beaten and bludgeoned in their quest for freedom. (..)2014 Selma