add test

utils/frame/rpc/system/src/lib.rs

@@ -290,6 +290,7 @@ mod tests {
  use futures::executor::block_on;
  use substrate_test_runtime_client::{runtime::Transfer, AccountKeyring};
  use sc_transaction_pool::{BasicPool, FullChainApi};
+ use sp_runtime::{ApplyExtrinsicResult, transaction_validity::{TransactionValidityError, InvalidTransaction}};
 
  #[test]
  fn should_return_next_nonce_for_some_account() {
@@ -352,4 +353,68 @@ mod tests {
  // then
  assert_eq!(res.wait(), Err(RpcError::method_not_found()));
  }
+
+ #[test]
+ fn dry_run_should_work() {
+ let _ = env_logger::try_init();
+
+ // given
+ let client = Arc::new(substrate_test_runtime_client::new());
+ let pool = Arc::new(
+ BasicPool::new(
+ Default::default(),
+ Arc::new(FullChainApi::new(client.clone())),
+ None,
+ ).0
+ );
+
+ let accounts = FullSystem::new(client, pool, DenyUnsafe::No);
+
+ let tx = Transfer {
+ from: AccountKeyring::Alice.into(),
+ to: AccountKeyring::Bob.into(),
+ amount: 5,
+ nonce: 0,
+ }.into_signed_tx();
+
+ // when
+ let res = accounts.dry_run(tx.encode().into(), None);
+
+ // then
+ let bytes = res.wait().unwrap().0;
+ let apply_res: ApplyExtrinsicResult = Decode::decode(&mut bytes.as_slice()).unwrap();
+ assert_eq!(apply_res, Ok(Ok(())));
+ }
+
+ #[test]
+ fn dry_run_should_indicate_error() {
+ let _ = env_logger::try_init();
+
+ // given
+ let client = Arc::new(substrate_test_runtime_client::new());
+ let pool = Arc::new(
+ BasicPool::new(
+ Default::default(),
+ Arc::new(FullChainApi::new(client.clone())),
+ None,
+ ).0
+ );
+
+ let accounts = FullSystem::new(client, pool, DenyUnsafe::No);
+
+ let tx = Transfer {
+ from: AccountKeyring::Alice.into(),
+ to: AccountKeyring::Bob.into(),
+ amount: 5,
+ nonce: 100,
+ }.into_signed_tx();
+
+ // when
+ let res = accounts.dry_run(tx.encode().into(), None);
+
+ // then
+ let bytes = res.wait().unwrap().0;
+ let apply_res: ApplyExtrinsicResult = Decode::decode(&mut bytes.as_slice()).unwrap();
+ assert_eq!(apply_res, Err(TransactionValidityError::Invalid(InvalidTransaction::Stale)));
+ }
 }