How many tests did Tris, Al, and Christina take together during the novel?

many: fighting, throwing knives

many tests were included such as yes throwing knives. Four, (Tobias is his real name), threw a knife at Tris, and it cut a small piece of her skin off. She instantly ran to him, and started freaking out. Who would know how much she knows about knife throwing?

It was her ear that tobias cut off, partly.