Despite the costly budget of Joker: Folie a Deux, a new report claims Warner Bros. elected not to have any test screenings for its latest comic book film. The first Joker was a stunning success for Warner Bros. and DC. The villain origin movie grossed over $1 billion and was the highest-grossing R-rated film of all time before recently being passed by Deadpool & Wolverine. While the first movie was originally meant to be a one-off, a sequel was green-lit as the studio wanted to bank on the franchise’s success.