For Kawaki to become a genin, Naruto has him go on D-Rank missions, which will serve as tests to see if he is qualified. 

Kawaki, Shikadai and Cho-Cho are attacked by shinobi that steal Mozuku's package. Realizing the mission is not a regular escort mission, Shikadai makes the decision to return home, but Kawaki disregards his orders and goes after the enemy.