lib.rs

				TEST_LANE_ID,
				REGULAR_PAYLOAD,
				2000,
			));

			// this reports delivery of message 1 => reward is paid to TEST_RELAYER_A
			assert_ok!(Module::<TestRuntime>::receive_messages_delivery_proof(
				Origin::signed(1),
				Ok((
					TEST_LANE_ID,
					InboundLaneData {
						relayers: vec![(1, 1, TEST_RELAYER_A)].into_iter().collect(),
						latest_received_nonce: 1,
						..Default::default()
					}
				)),
			));
			assert!(TestMessageDeliveryAndDispatchPayment::is_reward_paid(
				TEST_RELAYER_A,
				1000
			));
			assert!(!TestMessageDeliveryAndDispatchPayment::is_reward_paid(
				TEST_RELAYER_B,
				2000
			));

			// this reports delivery of both message 1 and message 2 => reward is paid only to TEST_RELAYER_B
			assert_ok!(Module::<TestRuntime>::receive_messages_delivery_proof(
				Origin::signed(1),
				Ok((
					TEST_LANE_ID,
					InboundLaneData {
						relayers: vec![(1, 1, TEST_RELAYER_A), (2, 2, TEST_RELAYER_B)]
							.into_iter()
							.collect(),
						latest_received_nonce: 2,
						..Default::default()
					}
				)),
			));
			assert!(!TestMessageDeliveryAndDispatchPayment::is_reward_paid(
				TEST_RELAYER_A,
				1000
			));
			assert!(TestMessageDeliveryAndDispatchPayment::is_reward_paid(
				TEST_RELAYER_B,
				2000
			));
		});
	}

	#[test]
	fn receive_messages_delivery_proof_rejects_invalid_proof() {
		run_test(|| {
			assert_noop!(
				Module::<TestRuntime>::receive_messages_delivery_proof(Origin::signed(1), Err(()),),
				Error::<TestRuntime, DefaultInstance>::InvalidMessagesDeliveryProof,
			);
		});
	}

	#[test]
	fn receive_messages_accepts_single_message_with_invalid_payload() {
		run_test(|| {
			let mut invalid_message = message(1, REGULAR_PAYLOAD);
			invalid_message.data.payload = Vec::new();

			assert_ok!(Module::<TestRuntime, DefaultInstance>::receive_messages_proof(
				Origin::signed(1),
				TEST_RELAYER_A,
				Ok(vec![invalid_message]).into(),
				0, // weight may be zero in this case (all messages are improperly encoded)
			),);

			assert_eq!(InboundLanes::<TestRuntime>::get(&TEST_LANE_ID).latest_received_nonce, 1,);
		});
	}

	#[test]
	fn receive_messages_accepts_batch_with_message_with_invalid_payload() {
		run_test(|| {
			let mut invalid_message = message(2, REGULAR_PAYLOAD);
			invalid_message.data.payload = Vec::new();

			assert_ok!(Module::<TestRuntime, DefaultInstance>::receive_messages_proof(
				Origin::signed(1),
				TEST_RELAYER_A,
				Ok(vec![
					message(1, REGULAR_PAYLOAD),
					invalid_message,
					message(3, REGULAR_PAYLOAD),
				])
				.into(),
				REGULAR_PAYLOAD.1 + REGULAR_PAYLOAD.1,
			),);

			assert_eq!(InboundLanes::<TestRuntime>::get(&TEST_LANE_ID).latest_received_nonce, 3,);
		});
	}

	#[test]
	fn storage_message_key_computed_properly() {
		// If this test fails, then something has been changed in module storage that is breaking all
		// previously crafted messages proofs.
		assert_eq!(
			storage_keys::message_key::<TestRuntime, DefaultInstance>(&*b"test", 42).0,
			hex!("87f1ffe31b52878f09495ca7482df1a48a395e6242c6813b196ca31ed0547ea79446af0e09063bd4a7874aef8a997cec746573742a00000000000000").to_vec(),
		);
	}

	#[test]
	fn outbound_lane_data_key_computed_properly() {
		// If this test fails, then something has been changed in module storage that is breaking all
		// previously crafted outbound lane state proofs.
		assert_eq!(
			storage_keys::outbound_lane_data_key::<DefaultInstance>(&*b"test").0,
			hex!("87f1ffe31b52878f09495ca7482df1a496c246acb9b55077390e3ca723a0ca1f44a8995dd50b6657a037a7839304535b74657374").to_vec(),
		);
	}

	#[test]
	fn inbound_lane_data_key_computed_properly() {
		// If this test fails, then something has been changed in module storage that is breaking all
		// previously crafted inbound lane state proofs.
		assert_eq!(
			storage_keys::inbound_lane_data_key::<TestRuntime, DefaultInstance>(&*b"test").0,
			hex!("87f1ffe31b52878f09495ca7482df1a4e5f83cf83f2127eb47afdc35d6e43fab44a8995dd50b6657a037a7839304535b74657374").to_vec(),
		);
	}
}