Function pallet_staking::testing_utils::create_stash_controller_with_balance

pub fn create_stash_controller_with_balance<T: Config>(
    n: u32, 
    balance: BalanceOf<T>, 
    destination: RewardDestination<T::AccountId>
) -> Result<(T::AccountId, T::AccountId), &'static str>

Create a stash and controller pair with fixed balance.