What test does utnapishtim give Gilgamesh?

Utnapishtim doesn't give Gilgamesh a test in the traditional sense, but he does present him with a challenge that requires him to stay awake for six days and seven nights.

This challenge is meant to test Gilgamesh's endurance and his ability to remain vigilant in order to gain the secret of immortality.

However, Gilgamesh fails the challenge, falling asleep after only a few hours. This failure highlights Gilgamesh's human limitations and ultimately contributes to his understanding that immortality is not achievable for mortals.