test: increase attempts for rewards available condition (#9974)

refs: #9934

## Description
- Increases overall timeout from 40s to 90s for "rewards available" condition in `/multichain-testing` staking flows test. This check happens after delegations are observed on the remote chain, but before we make an attempt to `WithdrawRewards`.

### Security Considerations
n/a

### Scaling Considerations
n/a

### Documentation Considerations
n/a

### Testing Considerations
Goal is to minimize observed CI flakes.

### Upgrade Considerations
n/a

multichain-testing/test/stake-ica.test.ts

@@ -3,12 +3,29 @@ import type { TestFn } from 'ava';
 import { commonSetup, SetupContextWithWallets } from './support.js';
 import { makeDoOffer } from '../tools/e2e-tools.js';
 import { makeQueryClient } from '../tools/query.js';
-import { sleep } from '../tools/sleep.js';
+import { sleep, type RetryOptions } from '../tools/sleep.js';
 
 const test = anyTest as TestFn<SetupContextWithWallets>;
 
 const accounts = ['user1', 'user2'];
 
+/**
+ * Wait 90 seconds to ensure staking rewards are available.
+ *
+ * While we expect staking rewards to be available after a
+ * single block (~5-12 seconds for most chains), this provide additional
+ * padding after observed failures in CI
+ * (https://github.com/Agoric/agoric-sdk/issues/9934).
+ *
+ * A more robust approach might consider Distribution params and the
+ * {@link FAUCET_POUR} constant to determine how many blocks it should take for
+ * rewards to be available.
+ */
+export const STAKING_REWARDS_TIMEOUT: RetryOptions = {
+  retryIntervalMs: 5000,
+  maxRetries: 18,
+};
+
 test.before(async t => {
   const { deleteTestKeys, setupTestKeys, ...rest } = await commonSetup(t);
   // XXX not necessary for CI, but helpful for unexpected failures in
@@ -178,10 +195,7 @@ const stakeScenario = test.macro(async (t, scenario: StakeIcaScenario) => {
       return Number(total?.[0]?.amount) > 0;
     },
     `rewards available on ${scenario.chain}`,
-    {
-      retryIntervalMs: 5000,
-      maxRetries: 8,
-    },
+    STAKING_REWARDS_TIMEOUT,
   );
   t.log('reward:', total[0]);
   t.log('WithrawReward offer from continuing inv');

multichain-testing/tools/sleep.ts

@@ -16,7 +16,7 @@ export const sleep = (
     setTimeout(resolve, ms);
   });
 
-type RetryOptions = {
+export type RetryOptions = {
   maxRetries?: number;
   retryIntervalMs?: number;
 } & SleepOptions;