adds e2e test showing the alternative way to create accounts (#47)

packages/e2e-tests/e2e/web_wallet.spec.ts

@@ -1,8 +1,12 @@
 import { test, expect } from '@playwright/test';
 import { WebWallet } from "@webzjs/webz-wallet";
 
+import type * as WebZKeys from "@webzjs/webz-keys";
 declare global {
-  interface Window { webWallet: WebWallet; }
+  interface Window { 
+    webWallet: WebWallet;
+    WebZKeys: typeof WebZKeys;
+  }
 }
 
 const SEED = "mix sample clay sweet planet lava giraffe hand fashion switch away pool rookie earth purity truly square trumpet goose move actor save jaguar volume";
@@ -30,3 +34,16 @@ test('Wallet can be serialized', async ({ page }) => {
     return bytes;
   });
 });
+
+test('Accont can be added from ufvk', async ({ page }) => {
+  let result = await page.evaluate(async () => {
+    let seed = new Uint8Array(32);
+    let birthday = 2657762;
+    let usk = new window.WebZKeys.UnifiedSpendingKey("main", seed, 0);
+    let ufvk = usk.to_unified_full_viewing_key();
+    await window.webWallet.create_account_ufvk(ufvk.encode("main"), birthday);
+    let summary = await window.webWallet.get_wallet_summary();
+    return summary?.account_balances.length;
+  });
+  expect(result).toBe(2);
+});