wallet-core: implement and test stored backups

2 files changed, 112 insertions, 0 deletions

diff --git a/packages/taler-harness/src/integrationtests/test-stored-backups.ts b/packages/taler-harness/src/integrationtests/test-stored-backups.ts
new file mode 100644
index 000000000..831506d83
--- /dev/null
+++ b/packages/taler-harness/src/integrationtests/test-stored-backups.ts
@@ -0,0 +1,110 @@
+/*
+ This file is part of GNU Taler
+ (C) 2023 Taler Systems S.A.
+
+ GNU Taler is free software; you can redistribute it and/or modify it under the
+ terms of the GNU General Public License as published by the Free Software
+ Foundation; either version 3, or (at your option) any later version.
+
+ GNU Taler 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 General Public License for more details.
+
+ You should have received a copy of the GNU General Public License along with
+ GNU Taler; see the file COPYING.  If not, see <http://www.gnu.org/licenses/>
+ */
+
+/**
+ * Imports.
+ */
+import { WalletApiOperation } from "@gnu-taler/taler-wallet-core";
+import { GlobalTestState } from "../harness/harness.js";
+import {
+  withdrawViaBankV2,
+  makeTestPaymentV2,
+  useSharedTestkudosEnvironment,
+} from "../harness/helpers.js";
+
+/**
+ * Test stored backup wallet-core API.
+ */
+export async function runStoredBackupsTest(t: GlobalTestState) {
+  // Set up test environment
+
+  const { walletClient, bank, exchange, merchant } =
+    await useSharedTestkudosEnvironment(t);
+
+  // Withdraw digital cash into the wallet.
+
+  await withdrawViaBankV2(t, {
+    walletClient,
+    bank,
+    exchange,
+    amount: "TESTKUDOS:20",
+  });
+
+  await walletClient.call(WalletApiOperation.TestingWaitTransactionsFinal, {});
+
+  const sb1Resp = await walletClient.call(
+    WalletApiOperation.CreateStoredBackup,
+    {},
+  );
+  const sbList = await walletClient.call(
+    WalletApiOperation.ListStoredBackups,
+    {},
+  );
+  t.assertTrue(sbList.storedBackups.length === 1);
+  t.assertTrue(sbList.storedBackups[0].name === sb1Resp.name);
+
+  const order = {
+    summary: "Buy me!",
+    amount: "TESTKUDOS:5",
+    fulfillment_url: "taler://fulfillment-success/thx",
+  };
+
+  await makeTestPaymentV2(t, { walletClient, merchant, order });
+  await walletClient.call(WalletApiOperation.TestingWaitTransactionsFinal, {});
+
+  const txn1 = await walletClient.call(WalletApiOperation.GetTransactions, {});
+  t.assertDeepEqual(txn1.transactions.length, 2);
+
+  // Recover from the stored backup now.
+
+  const sb2Resp = await walletClient.call(
+    WalletApiOperation.CreateStoredBackup,
+    {},
+  );
+
+  console.log("recovering backup");
+
+  await walletClient.call(WalletApiOperation.RecoverStoredBackup, {
+    name: sb1Resp.name,
+  });
+
+  console.log("first recovery done");
+
+  // Recovery went well, now we can delete the backup
+  // of the old database we stored before importing.
+  {
+    const sbl1 = await walletClient.call(
+      WalletApiOperation.ListStoredBackups,
+      {},
+    );
+    t.assertTrue(sbl1.storedBackups.length === 2);
+
+    await walletClient.call(WalletApiOperation.DeleteStoredBackup, {
+      name: sb1Resp.name,
+    });
+    const sbl2 = await walletClient.call(
+      WalletApiOperation.ListStoredBackups,
+      {},
+    );
+    t.assertTrue(sbl2.storedBackups.length === 1);
+  }
+
+  const txn2 = await walletClient.call(WalletApiOperation.GetTransactions, {});
+  // We only have the withdrawal after restoring
+  t.assertDeepEqual(txn2.transactions.length, 1);
+}
+
+runStoredBackupsTest.suites = ["wallet"];
diff --git a/packages/taler-harness/src/integrationtests/testrunner.ts b/packages/taler-harness/src/integrationtests/testrunner.ts
index 501af98a4..7afd9bc83 100644
--- a/packages/taler-harness/src/integrationtests/testrunner.ts
+++ b/packages/taler-harness/src/integrationtests/testrunner.ts
@@ -114,6 +114,7 @@ import { runSimplePaymentTest } from "./test-simple-payment.js";
 import { runTermOfServiceFormatTest } from "./test-tos-format.js";
 import { runExchangePurseTest } from "./test-exchange-purse.js";
 import { getSharedTestDir } from "../harness/helpers.js";
+import { runStoredBackupsTest } from "./test-stored-backups.js";
 
 /**
  * Test runner.
@@ -212,6 +213,7 @@ const allTests: TestMainFunction[] = [
   runWithdrawalFeesTest,
   runWithdrawalHugeTest,
   runTermOfServiceFormatTest,
+  runStoredBackupsTest,
 ];
 
 export interface TestRunSpec {