diff --git a/crates/transaction-pool/src/traits.rs b/crates/transaction-pool/src/traits.rs
index 371f7097fe..a821e9ee57 100644
--- a/crates/transaction-pool/src/traits.rs
+++ b/crates/transaction-pool/src/traits.rs
@@ -1317,3 +1317,163 @@ impl<Tx: PoolTransaction> Stream for NewSubpoolTransactionStream<Tx> {
         }
     }
 }
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+    use reth_primitives::{
+        constants::eip4844::DATA_GAS_PER_BLOB, Signature, TransactionSigned, TxEip1559, TxEip2930,
+        TxEip4844, TxEip7702, TxLegacy,
+    };
+
+    #[test]
+    fn test_pool_size_invariants() {
+        let pool_size = PoolSize {
+            pending: 10,
+            pending_size: 1000,
+            blob: 5,
+            blob_size: 500,
+            basefee: 8,
+            basefee_size: 800,
+            queued: 7,
+            queued_size: 700,
+            total: 10 + 5 + 8 + 7, // Correct total
+        };
+
+        // Call the assert_invariants method to check if the invariants are correct
+        pool_size.assert_invariants();
+    }
+
+    #[test]
+    #[should_panic]
+    fn test_pool_size_invariants_fail() {
+        let pool_size = PoolSize {
+            pending: 10,
+            pending_size: 1000,
+            blob: 5,
+            blob_size: 500,
+            basefee: 8,
+            basefee_size: 800,
+            queued: 7,
+            queued_size: 700,
+            total: 10 + 5 + 8, // Incorrect total
+        };
+
+        // Call the assert_invariants method, which should panic
+        pool_size.assert_invariants();
+    }
+
+    #[test]
+    fn test_eth_pooled_transaction_new_legacy() {
+        // Create a legacy transaction with specific parameters
+        let tx = Transaction::Legacy(TxLegacy {
+            gas_price: 10,
+            gas_limit: 1000,
+            value: U256::from(100),
+            ..Default::default()
+        });
+        let signature = Signature::default();
+        let signed_tx = TransactionSigned::from_transaction_and_signature(tx, signature);
+        let transaction =
+            TransactionSignedEcRecovered::from_signed_transaction(signed_tx, Default::default());
+        let pooled_tx = EthPooledTransaction::new(transaction.clone(), 200);
+
+        // Check that the pooled transaction is created correctly
+        assert_eq!(pooled_tx.transaction, transaction);
+        assert_eq!(pooled_tx.encoded_length, 200);
+        assert_eq!(pooled_tx.blob_sidecar, EthBlobTransactionSidecar::None);
+        assert_eq!(pooled_tx.cost, U256::from(100) + U256::from(10 * 1000));
+    }
+
+    #[test]
+    fn test_eth_pooled_transaction_new_eip2930() {
+        // Create an EIP-2930 transaction with specific parameters
+        let tx = Transaction::Eip2930(TxEip2930 {
+            gas_price: 10,
+            gas_limit: 1000,
+            value: U256::from(100),
+            ..Default::default()
+        });
+        let signature = Signature::default();
+        let signed_tx = TransactionSigned::from_transaction_and_signature(tx, signature);
+        let transaction =
+            TransactionSignedEcRecovered::from_signed_transaction(signed_tx, Default::default());
+        let pooled_tx = EthPooledTransaction::new(transaction.clone(), 200);
+
+        // Check that the pooled transaction is created correctly
+        assert_eq!(pooled_tx.transaction, transaction);
+        assert_eq!(pooled_tx.encoded_length, 200);
+        assert_eq!(pooled_tx.blob_sidecar, EthBlobTransactionSidecar::None);
+        assert_eq!(pooled_tx.cost, U256::from(100) + U256::from(10 * 1000));
+    }
+
+    #[test]
+    fn test_eth_pooled_transaction_new_eip1559() {
+        // Create an EIP-1559 transaction with specific parameters
+        let tx = Transaction::Eip1559(TxEip1559 {
+            max_fee_per_gas: 10,
+            gas_limit: 1000,
+            value: U256::from(100),
+            ..Default::default()
+        });
+        let signature = Signature::default();
+        let signed_tx = TransactionSigned::from_transaction_and_signature(tx, signature);
+        let transaction =
+            TransactionSignedEcRecovered::from_signed_transaction(signed_tx, Default::default());
+        let pooled_tx = EthPooledTransaction::new(transaction.clone(), 200);
+
+        // Check that the pooled transaction is created correctly
+        assert_eq!(pooled_tx.transaction, transaction);
+        assert_eq!(pooled_tx.encoded_length, 200);
+        assert_eq!(pooled_tx.blob_sidecar, EthBlobTransactionSidecar::None);
+        assert_eq!(pooled_tx.cost, U256::from(100) + U256::from(10 * 1000));
+    }
+
+    #[test]
+    fn test_eth_pooled_transaction_new_eip4844() {
+        // Create an EIP-4844 transaction with specific parameters
+        let tx = Transaction::Eip4844(TxEip4844 {
+            max_fee_per_gas: 10,
+            gas_limit: 1000,
+            value: U256::from(100),
+            max_fee_per_blob_gas: 5,
+            blob_versioned_hashes: vec![B256::default()],
+            ..Default::default()
+        });
+        let signature = Signature::default();
+        let signed_tx = TransactionSigned::from_transaction_and_signature(tx, signature);
+        let transaction =
+            TransactionSignedEcRecovered::from_signed_transaction(signed_tx, Default::default());
+        let pooled_tx = EthPooledTransaction::new(transaction.clone(), 300);
+
+        // Check that the pooled transaction is created correctly
+        assert_eq!(pooled_tx.transaction, transaction);
+        assert_eq!(pooled_tx.encoded_length, 300);
+        assert_eq!(pooled_tx.blob_sidecar, EthBlobTransactionSidecar::Missing);
+        let expected_cost =
+            U256::from(100) + U256::from(10 * 1000) + U256::from(5 * DATA_GAS_PER_BLOB);
+        assert_eq!(pooled_tx.cost, expected_cost);
+    }
+
+    #[test]
+    fn test_eth_pooled_transaction_new_eip7702() {
+        // Init an EIP-7702 transaction with specific parameters
+        let tx = Transaction::Eip7702(TxEip7702 {
+            max_fee_per_gas: 10,
+            gas_limit: 1000,
+            value: U256::from(100),
+            ..Default::default()
+        });
+        let signature = Signature::default();
+        let signed_tx = TransactionSigned::from_transaction_and_signature(tx, signature);
+        let transaction =
+            TransactionSignedEcRecovered::from_signed_transaction(signed_tx, Default::default());
+        let pooled_tx = EthPooledTransaction::new(transaction.clone(), 200);
+
+        // Check that the pooled transaction is created correctly
+        assert_eq!(pooled_tx.transaction, transaction);
+        assert_eq!(pooled_tx.encoded_length, 200);
+        assert_eq!(pooled_tx.blob_sidecar, EthBlobTransactionSidecar::None);
+        assert_eq!(pooled_tx.cost, U256::from(100) + U256::from(10 * 1000));
+    }
+}