Oneshot accounts

Add lighter accounts that can be consumed only once.

Je n'ai pas encore fait les tests unitaires car la config de mock est assez longue à faire. Mais les tests d'intégration sont là.

Est-ce que l'ordre des deposit_event importe ? Si non, le code des calls peut être un peu factorisé sans coût.

end2end-tests/tests/common/oneshot.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 super::node_runtime::runtime_types::gdev_runtime;
+use super::node_runtime::runtime_types::pallet_balances;
+use super::node_runtime::runtime_types::pallet_oneshot_account;
+use super::*;
+use sp_keyring::AccountKeyring;
+use subxt::{
+    sp_runtime::{AccountId32, MultiAddress},
+    PairSigner,
+};
+
+pub enum Account {
+    Normal(AccountKeyring),
+    Oneshot(AccountKeyring),
+}
+
+impl Account {
+    fn to_account_id(
+        &self,
+    ) -> pallet_oneshot_account::types::Account<MultiAddress<AccountId32, ()>> {
+        match self {
+            Account::Normal(account) => {
+                pallet_oneshot_account::types::Account::Normal(account.to_account_id().into())
+            }
+            Account::Oneshot(account) => {
+                pallet_oneshot_account::types::Account::Oneshot(account.to_account_id().into())
+            }
+        }
+    }
+}
+
+pub async fn create_oneshot_account(
+    api: &Api,
+    client: &Client,
+    from: AccountKeyring,
+    amount: u64,
+    to: AccountKeyring,
+) -> Result<()> {
+    let from = PairSigner::new(from.pair());
+    let to = to.to_account_id();
+
+    let _events = create_block_with_extrinsic(
+        client,
+        api.tx()
+            .oneshot_account()
+            .create_oneshot_account(to.into(), amount)?
+            .create_signed(&from, BaseExtrinsicParamsBuilder::new())
+            .await?,
+    )
+    .await?;
+
+    Ok(())
+}
+
+pub async fn consume_oneshot_account(
+    api: &Api,
+    client: &Client,
+    from: AccountKeyring,
+    to: Account,
+) -> Result<()> {
+    let from = PairSigner::new(from.pair());
+    let to = to.to_account_id();
+
+    let _events = create_block_with_extrinsic(
+        client,
+        api.tx()
+            .oneshot_account()
+            .consume_oneshot_account(0, to)?
+            .create_signed(&from, BaseExtrinsicParamsBuilder::new())
+            .await?,
+    )
+    .await?;
+
+    Ok(())
+}
+
+#[allow(clippy::too_many_arguments)]
+pub async fn consume_oneshot_account_with_remaining(
+    api: &Api,
+    client: &Client,
+    from: AccountKeyring,
+    amount: u64,
+    to: Account,
+    remaining_to: Account,
+) -> Result<()> {
+    let from = PairSigner::new(from.pair());
+    let to = to.to_account_id();
+    let remaining_to = remaining_to.to_account_id();
+
+    let _events = create_block_with_extrinsic(
+        client,
+        api.tx()
+            .oneshot_account()
+            .consume_oneshot_account_with_remaining(0, to, remaining_to, amount)?
+            .create_signed(&from, BaseExtrinsicParamsBuilder::new())
+            .await?,
+    )
+    .await?;
+
+    Ok(())
+}