wallet-core: have balance item even on zero balance

Also add a test for this.

1 files changed, 6 insertions, 1 deletions

diff --git a/packages/taler-wallet-core/src/balance.ts b/packages/taler-wallet-core/src/balance.ts
index 3b53699ac..6dc0783c0 100644
--- a/packages/taler-wallet-core/src/balance.ts
+++ b/packages/taler-wallet-core/src/balance.ts
@@ -80,7 +80,7 @@ import {
   getExchangeScopeInfo,
   getExchangeWireDetailsInTx,
 } from "./exchanges.js";
-import { InternalWalletState, WalletExecutionContext } from "./wallet.js";
+import { WalletExecutionContext } from "./wallet.js";
 
 /**
  * Logger.
@@ -178,6 +178,10 @@ class BalancesStore {
     return this.balanceStore[balanceKey];
   }
 
+  async addZero(currency: string, exchangeBaseUrl: string): Promise<void> {
+    await this.initBalance(currency, exchangeBaseUrl);
+  }
+
   async addAvailable(
     currency: string,
     exchangeBaseUrl: string,
@@ -304,6 +308,7 @@ export async function getBalancesInsideTransaction(
 
   await tx.coinAvailability.iter().forEachAsync(async (ca) => {
     const count = ca.visibleCoinCount ?? 0;
+    await balanceStore.addZero(ca.currency, ca.exchangeBaseUrl);
     for (let i = 0; i < count; i++) {
       await balanceStore.addAvailable(
         ca.currency,