From b6410a820a44a6bee599f02bbed532a827784a0b Mon Sep 17 00:00:00 2001
From: Nikolaos Dymitriadis <nikolaos.dymitriadis@iohk.io>
Date: Sat, 22 Feb 2025 00:30:40 +0100
Subject: [PATCH] assertion

---
 node/node/src/inherent_data.rs | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)

diff --git a/node/node/src/inherent_data.rs b/node/node/src/inherent_data.rs
index 214bfeeb3..796f0ea99 100644
--- a/node/node/src/inherent_data.rs
+++ b/node/node/src/inherent_data.rs
@@ -20,6 +20,7 @@ use sp_block_production_log::BlockProducerIdInherentProvider;
 use sp_block_production_log::BlockProductionLogApi;
 use sp_block_rewards::BlockBeneficiaryInherentProvider;
 use sp_blockchain::HeaderBackend;
+use sp_consensus_aura::AuraApi;
 use sp_consensus_aura::{
 	inherents::InherentDataProvider as AuraIDP, sr25519::AuthorityPair as AuraPair, Slot,
 };
@@ -45,6 +46,7 @@ pub struct ProposalCIDP<T> {
 	native_token_data_source: Arc<dyn NativeTokenManagementDataSource + Send + Sync>,
 }
 
+use sp_consensus_aura::sr25519::AuthorityId as AuraId;
 #[async_trait]
 impl<T> CreateInherentDataProviders<Block, ()> for ProposalCIDP<T>
 where
@@ -58,6 +60,7 @@ where
 	>,
 	T::Api: NativeTokenManagementApi<Block>,
 	T::Api: BlockProductionLogApi<Block, CommitteeMember<CrossChainPublic, SessionKeys>>,
+	T::Api: AuraApi<Block, AuraId>,
 {
 	type InherentDataProviders = (
 		AuraIDP,
@@ -117,6 +120,24 @@ where
 		)
 		.await?;
 
+		// temporary for testing purposes
+		let previous_header = client.expect_header(parent_hash)?;
+		if previous_header.digest().clone().pop().is_some() {
+			use sc_consensus_aura::standalone::*;
+			use sp_session_validator_management::CommitteeMember;
+
+			let previous_slot = client.runtime_api().get_current_slot(parent_hash)?;
+			let authorities = client.runtime_api().authorities(parent_hash)?;
+
+			let slot_author_according_to_aura =
+				slot_author::<AuraPair>(previous_slot, &authorities).unwrap();
+
+			let slot_author_according_to_palelt =
+				client.runtime_api().get_current_author(parent_hash)?.authority_keys().aura;
+
+			assert_eq!(*slot_author_according_to_aura, slot_author_according_to_palelt);
+		}
+
 		Ok((
 			slot,
 			timestamp,