what does "even that's a testament"mean? does "testament"here has any special meaning?
“You’re questioning yourself,” Abra said as she checked the lines and fit of the dress she’d put on over a black tank and yoga shorts.
“I used to believe in the system, absolutely. I was part of the system. Now I’m going around it.”
“No, you’re working through it, just in a different way. And even that’s a testament, Eli, when the system failed you. You have a right to defend your home, and a right to do whatever you can to clear your name.”
She added earrings not only to complete the look, but because they boosted her confidence. “You even have a right to enjoy it.”
“You think so?”
“Yes, I do.”i don't understand this sentence: And even that’s a testament, Eli, when the system failed you