update comments

ethcore/src/miner/miner.rs

@@ -1289,22 +1289,22 @@ mod tests {
 		let res = miner.import_own_transaction(&client, PendingTransaction::new(transaction.clone(), None));
 
 		// then
-		// check the same conditions as `should_import_external_transaction` first - behaviour should be identical
-		// that is: it's treated as though we added it through `import_external_transactions`
+		// Check the same conditions as `should_import_external_transaction` first. Behaviour should be identical.
+		// That is: it's treated as though we added it through `import_external_transactions`
 		assert_eq!(res.unwrap(), ());
 		assert_eq!(miner.pending_transactions(best_block), None);
 		assert_eq!(miner.pending_receipts(best_block), None);
 		assert_eq!(miner.ready_transactions(&client, 10, PendingOrdering::Priority).len(), 0);
 		assert!(miner.prepare_pending_block(&client));
 		assert_eq!(miner.ready_transactions(&client, 10, PendingOrdering::Priority).len(), 1);
 
-		// when - 2nd part, create a local transaction from account_provider
-		// borrow the transaction used before & sign with our generated keypair
+		// when - 2nd part: create a local transaction from account_provider.
+		// Borrow the transaction used before & sign with our generated keypair.
 		let local_transaction = transaction.deconstruct().0.as_unsigned().clone().sign(keypair.secret(), Some(TEST_CHAIN_ID));
 		let res2 = miner.import_own_transaction(&client, PendingTransaction::new(local_transaction, None));
 
-		// then - 2nd part, we add on the results from the last pending block.
-		// borrow this from `should_make_pending_block_when_importing_own_transaction`
+		// then - 2nd part: we add on the results from the last pending block.
+		// This is borrowed from `should_make_pending_block_when_importing_own_transaction` and slightly modified.
 		assert_eq!(res2.unwrap(), ());
 		assert_eq!(miner.pending_transactions(best_block).unwrap().len(), 2);
 		assert_eq!(miner.pending_receipts(best_block).unwrap().len(), 2);