Juventus goalkeeper Gigi Buffon says they'll learn about their title credentials against AC Milan on Sunday.
The Bianconeri go into Sunday's meeting top of the table and undefeated from the first four rounds of games.
Buffon said: "This game will tell us. Bringing home a positive result is what we would need for our self-esteem.
"In short, it would allow us to lay down an important brick along our path of growth."