upgrade substrate to monthly-2022-01

integration-tests/src/balance_transfer.rs

+// Copyright 2021 Axiom-Team
+//
+// This file is part of Substrate-Libre-Currency.
+//
+// Substrate-Libre-Currency is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Affero General Public License as published by
+// the Free Software Foundation, version 3 of the License.
+//
+// Substrate-Libre-Currency is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU Affero General Public License for more details.
+//
+// You should have received a copy of the GNU Affero General Public License
+// along with Substrate-Libre-Currency. If not, see <https://www.gnu.org/licenses/>.
+
+use crate::common::*;
+use sp_keyring::AccountKeyring;
+use subxt::PairSigner;
+
+#[tokio::test]
+async fn test_balance_transfer() -> Result<(), Box<dyn std::error::Error>> {
+    env_logger::init();
+
+    // Spawn a node
+    let (api, client, _process) = spawn_node().await;
+
+    let alice = PairSigner::new(AccountKeyring::Alice.pair());
+    let dave = AccountKeyring::Dave.to_account_id();
+
+    let events = create_block_with_extrinsic(
+        &client,
+        api.tx()
+            .balances()
+            .transfer(dave.clone().into(), 512)
+            .create_signed(&alice, ())
+            .await?,
+    )
+    .await?;
+
+    println!(
+        "Balance transfer extrinsic written in blockchain, events: {:?}",
+        events
+    );
+
+    // verify that Bob's free Balance increased
+    let dave_post = api.storage().system().account(dave, None).await?;
+    println!("Bob's Free Balance is now {}\n", dave_post.data.free);
+    assert_eq!(dave_post.data.free, 512);
+
+    Ok(())
+}