diff --git a/Cargo.lock b/Cargo.lock
index ec72ce93fc..eb3675eaaa 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -10557,6 +10557,7 @@ version = "0.0.0"
 dependencies = [
  "async-trait",
  "futures",
+ "mockall",
  "papyrus_config",
  "papyrus_network",
  "papyrus_network_types",
diff --git a/crates/starknet_mempool_p2p/Cargo.toml b/crates/starknet_mempool_p2p/Cargo.toml
index 5e5b278e49..bf99e84ebe 100644
--- a/crates/starknet_mempool_p2p/Cargo.toml
+++ b/crates/starknet_mempool_p2p/Cargo.toml
@@ -26,6 +26,7 @@ validator.workspace = true
 
 [dev-dependencies]
 futures.workspace = true
+mockall.workspace = true
 papyrus_network = { workspace = true, features = ["testing"] }
 papyrus_network_types = { workspace = true, features = ["testing"] }
 papyrus_protobuf.workspace = true
diff --git a/crates/starknet_mempool_p2p/src/runner/test.rs b/crates/starknet_mempool_p2p/src/runner/test.rs
index 175adb7499..ed2cb58130 100644
--- a/crates/starknet_mempool_p2p/src/runner/test.rs
+++ b/crates/starknet_mempool_p2p/src/runner/test.rs
@@ -16,79 +16,89 @@ use starknet_api::rpc_transaction::RpcTransaction;
 use starknet_api::transaction::TransactionHash;
 use starknet_gateway_types::communication::{GatewayClientError, MockGatewayClient};
 use starknet_gateway_types::errors::{GatewayError, GatewaySpecError};
+use starknet_gateway_types::gateway_types::GatewayInput;
 use starknet_sequencer_infra::component_definitions::ComponentStarter;
 
 use super::MempoolP2pRunner;
 
-// The p2p runner receives a tx from network, and forwards it to the gateway.
+// The p2p runner receives a tx from network, and successfully forwards it to the gateway.
 #[tokio::test]
 async fn incoming_p2p_tx_reaches_gateway_client() {
     // Mock a network for the other node to send tx to our p2p runner using the subscriber channels.
     let TestSubscriberChannels { mock_network, subscriber_channels } =
         mock_register_broadcast_topic().expect("Failed to create mock network");
     let BroadcastTopicChannels { broadcasted_messages_receiver, broadcast_topic_client } =
-        subscriber_channels; // used to created our node's p2p runner below, which will listen for incoming txs over broadcasted_messages_receiver.
+        subscriber_channels;
     let BroadcastNetworkMock {
         broadcasted_messages_sender: mut mock_broadcasted_messages_sender,
         ..
-    } = mock_network; // other node sending tx to our p2p runner
+    } = mock_network;
 
     // Creating a placeholder network manager with default config for init of a mempool receiver
     let placeholder_network_manager = NetworkManager::new(NetworkConfig::default(), None);
 
-    // send an empty message on this channel to indicate that the tx reached the gateway client.
+    // Create channels for sending an empty message to indicate that the tx reached the gateway
+    // client.
     let (add_tx_indicator_sender, add_tx_indicator_receiver) = futures::channel::oneshot::channel();
 
+    let message_metadata = BroadcastedMessageMetadata::get_test_instance(&mut get_rng());
+    let expected_rpc_transaction =
+        RpcTransactionWrapper(RpcTransaction::get_test_instance(&mut get_rng()));
+    let gateway_input = GatewayInput {
+        rpc_tx: expected_rpc_transaction.0.clone(),
+        message_metadata: Some(message_metadata.clone()),
+    };
+
     let mut mock_gateway_client = MockGatewayClient::new();
-    mock_gateway_client.expect_add_tx().return_once(move |_| {
-        add_tx_indicator_sender.send(()).unwrap();
-        Ok(TransactionHash::default())
-    });
+    mock_gateway_client.expect_add_tx().with(mockall::predicate::eq(gateway_input)).return_once(
+        move |_| {
+            add_tx_indicator_sender.send(()).unwrap();
+            Ok(TransactionHash::default())
+        },
+    );
     let mut mempool_p2p_runner = MempoolP2pRunner::new(
         Some(placeholder_network_manager),
-        broadcasted_messages_receiver, // listen to incoming tx
-        broadcast_topic_client,        // broadcast tx or report peer
+        broadcasted_messages_receiver,
+        broadcast_topic_client,
         Arc::new(mock_gateway_client),
     );
 
-    let message_metadata = BroadcastedMessageMetadata::get_test_instance(&mut get_rng());
-    let expected_rpc_transaction =
-        RpcTransactionWrapper(RpcTransaction::get_test_instance(&mut get_rng()));
-
-    // Sending the expected transaction to the mempool runner
     let res =
         mock_broadcasted_messages_sender.send((expected_rpc_transaction.clone(), message_metadata));
 
     res.await.expect("Failed to send message");
 
     tokio::select! {
-        // if the runner takes longer than 5 seconds to start, we panic.
         // if the runner fails, there was a network issue => panic.
         // if the runner returns successfully, we panic because the runner should never terminate.
-        res = tokio::time::timeout(Duration::from_secs(5), mempool_p2p_runner.start()) => {res.expect("Test timed out").expect("Runner failed - network stopped unexpectedly"); panic!("Runner terminated")},
-        // if a message was received on this oneshot channel, the gateway client received the tx.
+        res = tokio::time::timeout(Duration::from_secs(5), mempool_p2p_runner.start()) => {
+            res.expect("Test timed out").expect("MempoolP2pRunner failed - network stopped unexpectedly");
+            panic!("MempoolP2pRunner terminated");
+        },
+        // if a message was received on this oneshot channel, the gateway client received the tx and the test succeeded.
         res = add_tx_indicator_receiver => {res.unwrap()}
     }
 }
 
-// The p2p runner receives a tx from network, and fails to forwards it to the gateway.
+// The p2p runner receives a tx from network, and the gateway decalines it, triggering report_peer.
 #[tokio::test]
 async fn incoming_p2p_tx_fails_on_gateway_client() {
     // Mock a network for the other node to send tx to our p2p runner using the subscriber channels.
     let TestSubscriberChannels { mock_network, subscriber_channels } =
         mock_register_broadcast_topic().expect("Failed to create mock network");
     let BroadcastTopicChannels { broadcasted_messages_receiver, broadcast_topic_client } =
-        subscriber_channels; // used to created our node's p2p runner below, which will listen for incoming txs over broadcasted_messages_receiver.
+        subscriber_channels;
     let BroadcastNetworkMock {
         broadcasted_messages_sender: mut mock_broadcasted_messages_sender,
         reported_messages_receiver: mut mock_reported_messages_receiver,
         ..
-    } = mock_network; // other node sending tx to our p2p runner
+    } = mock_network;
 
     // Creating a placeholder network manager with default config for init of a mempool receiver
     let placeholder_network_manager = NetworkManager::new(NetworkConfig::default(), None);
 
-    // send an empty message on this channel to indicate that the tx reached the gateway client.
+    // Create channels for sending an empty message to indicate that the tx reached the gateway
+    // client.
     let (add_tx_indicator_sender, add_tx_indicator_receiver) = futures::channel::oneshot::channel();
 
     let message_metadata = BroadcastedMessageMetadata::get_test_instance(&mut get_rng());
@@ -111,24 +121,26 @@ async fn incoming_p2p_tx_fails_on_gateway_client() {
         Arc::new(mock_gateway_client),
     );
 
-    // Sending the expected transaction to the mempool runner
     let res = mock_broadcasted_messages_sender
         .send((expected_rpc_transaction.clone(), message_metadata.clone()));
 
     res.await.expect("Failed to send message");
 
     tokio::select! {
-    // if the runner takes longer than 5 seconds to start, we panic.
-    // if the runner fails, there was a network issue => panic.
-    // if the runner returns successfully, we panic because the runner should never terminate.
-    res = tokio::time::timeout(Duration::from_secs(5), mempool_p2p_runner.start()) => {res.expect("Test timed out").expect("Runner failed - network stopped unexpectedly"); panic!("Runner terminated")},
-    // if a message was received on this oneshot channel, the gateway client received the tx.
-    res = add_tx_indicator_receiver => {
-    // if unwrap fails, the tx wasnt forwarded to the gateway client.
-    res.unwrap();
-    // After gateway client fails to add the tx, the p2p runner should have reported the peer.
-    let peer_reported = mock_reported_messages_receiver.next().await.expect("Failed to receive message");
-    assert_eq!(peer_reported, message_metadata.originator_id.private_get_peer_id())
-    }
+        // if the runner fails, there was a network issue => panic.
+        // if the runner returns successfully, we panic because the runner should never terminate.
+        res = tokio::time::timeout(Duration::from_secs(5), mempool_p2p_runner.start()) => {
+            res.expect("Test timed out (MempoolP2pRunner took too long to start)").expect("MempoolP2pRunner failed - network stopped unexpectedly");
+            panic!("MempoolP2pRunner terminated");
+        },
+        // if a message was received on this oneshot channel, the gateway client received the tx.
+        res = add_tx_indicator_receiver => {
+            // if unwrap fails, the tx wasn't forwarded to the gateway client.
+            res.unwrap();
+            // After gateway client fails to add the tx, the p2p runner should have reported the peer.
+            let peer_reported = mock_reported_messages_receiver.next().await.expect("Failed to receive report");
+            // TODO: add this functionalionality to network manager test utils
+            assert_eq!(peer_reported, message_metadata.originator_id.private_get_peer_id())
+        }
     }
 }