feat: add test for getavable gateway

Author: alexlwn123

packages/core/src/services/LightningService.ts

@@ -2,6 +2,7 @@ import { TransportClient } from '../transport'
 import type {
   CreateBolt11Response,
   GatewayInfo,
+  GetAvailableGatewayParams,
   JSONObject,
   LightningGateway,
   LnInternalPayState,
@@ -77,7 +78,10 @@ export class LightningService {
     )
   }
 
-  async getAvailableGateway(gateway?: LightningGateway, invoice?: string) {
+  async getAvailableGateway({
+    gateway,
+    invoice,
+  }: GetAvailableGatewayParams | undefined = {}) {
     return await this.client.rpcSingle<LightningGateway | null>(
       'ln',
       'select_available_gateway',
@@ -90,7 +94,7 @@ export class LightningService {
 
   private async _getDefaultGatewayInfo(invoice?: string) {
     await this.updateGatewayCache()
-    const gateway = await this.getAvailableGateway(undefined, invoice)
+    const gateway = await this.getAvailableGateway({ invoice })
     return gateway?.info ?? null
   }
 

packages/core/src/types/wallet.ts

@@ -14,6 +14,7 @@ type GatewayInfo = {
   route_hints: RouteHint[]
   fees: FeeToAmount
 }
+
 type LightningGateway = {
   info: GatewayInfo
   vetted: boolean
@@ -36,6 +37,11 @@ type OutgoingLightningPayment = {
 
 type PayType = { lightning: string } | { internal: string }
 
+type GetAvailableGatewayParams = {
+  gateway?: LightningGateway
+  invoice?: string
+}
+
 type LnPayState =
   | 'created'
   | 'canceled'
@@ -295,4 +301,5 @@ export {
   WalletTransaction,
   Transactions,
   WalletDepositState,
+  GetAvailableGatewayParams,
 }

packages/integration-tests/src/services/LightningService.test.ts

@@ -1,6 +1,7 @@
 import { expect } from 'vitest'
 import { keyPair } from '../test/crypto'
 import { walletTest } from '../test/fixtures'
+import { LightningGateway } from '@fedimint/core'
 
 walletTest(
   'createInvoice should create a bolt11 invoice',
@@ -263,3 +264,19 @@ walletTest(
     }
   },
 )
+
+walletTest(
+  'getAvailableGateway should return a gateway',
+  async ({ wallet }) => {
+    expect(wallet).toBeDefined()
+    expect(wallet.isOpen()).toBe(true)
+
+    const gateway = await wallet.lightning.getAvailableGateway()
+    expect(gateway).toBeDefined()
+    expect(gateway).toMatchObject({
+      info: expect.any(Object),
+      vetted: expect.any(Boolean),
+      ttl: expect.any(Object),
+    } satisfies LightningGateway)
+  },
+)