All of the Tofugu workers testified that they had seen Koichi eat Viet's meatball.
Only Michael refused because he didn't want to testify against Koichi.
When Fugu was suspected of placing some puffer fish poison on the teacher’s apple, all his classmates testified that he was innocent.
Evidence that you say is testimony. Hopefully you won't have to give too much of this in your lifetime.
This is a jukugo word, which usually means on'yomi readings from the kanji. If you know the readings of your kanji you'll know how to read this as well.