Add verify to benchmark and document the new call

substrate/frame/bounties/src/benchmarking.rs

@@ -122,12 +122,17 @@ benchmarks_instance_pallet! {
 	approve_bounty_with_curator {
 		setup_pot_account::<T, I>();
 		let (caller, curator, fee, value, reason) = setup_bounty::<T, I>(0, T::MaximumReasonLength::get());
-		let curator_lookup = T::Lookup::unlookup(curator);
+		let curator_lookup = T::Lookup::unlookup(curator.clone());
 		Bounties::<T, I>::propose_bounty(RawOrigin::Signed(caller).into(), value, reason)?;
 		let bounty_id = BountyCount::<T, I>::get() - 1;
 		let approve_origin = T::SpendOrigin::try_successful_origin().map_err(|_| BenchmarkError::Weightless)?;
 		Treasury::<T, I>::on_initialize(BlockNumberFor::<T>::zero());
 	}: _<T::RuntimeOrigin>(approve_origin, bounty_id, curator_lookup, fee)
+	verify {
+		assert_last_event::<T, I>(
+			Event::CuratorProposed { bounty_id, curator }.into()
+		);
+	}
 
 	// Worst case when curator is inactive and any sender unassigns the curator.
 	unassign_curator {

substrate/frame/bounties/src/lib.rs

@@ -73,6 +73,8 @@
 //! - `approve_bounty` - Accept a specific treasury amount to be earmarked for a predefined body of
 //!   work.
 //! - `propose_curator` - Assign an account to a bounty as candidate curator.
+//! - `approve_bounty_with_curator` - Accept a specific treasury amount for a predefined body of
+//!   work with assigned candidate curator account.
 //! - `accept_curator` - Accept a bounty assignment from the Council, setting a curator deposit.
 //! - `extend_bounty_expiry` - Extend the expiry block number of the bounty and stay active.
 //! - `award_bounty` - Close and pay out the specified amount for the completed work.