From 440c2a20d8634ae6788304fc2d83fb7d27eee87d Mon Sep 17 00:00:00 2001
From: matthewkeil <me@matthewkeil.com>
Date: Sat, 12 Oct 2024 21:29:08 +0700
Subject: [PATCH] fix: failed unit test

---
 packages/state-transition/src/cache/epochCache.ts | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/packages/state-transition/src/cache/epochCache.ts b/packages/state-transition/src/cache/epochCache.ts
index 10f9211f1b1..f9ae98d7eb8 100644
--- a/packages/state-transition/src/cache/epochCache.ts
+++ b/packages/state-transition/src/cache/epochCache.ts
@@ -920,18 +920,20 @@ export class EpochCache {
    */
   async getBeaconProposersNextEpoch(): Promise<ValidatorIndex[]> {
     if (!this.proposersNextEpoch.computed) {
-      const shuffling = await this.shufflingCache?.get(this.nextEpoch, this.nextDecisionRoot);
-      if (!shuffling) {
+      if (!this.nextShuffling) {
+        this.nextShuffling = (await this.shufflingCache?.get(this.nextEpoch, this.nextDecisionRoot)) ?? null;
+      }
+      if (!this.nextShuffling) {
         throw new EpochCacheError({
           code: EpochCacheErrorCode.NEXT_SHUFFLING_NOT_AVAILABLE,
           epoch: this.nextEpoch,
           decisionRoot: this.getShufflingDecisionRoot(this.nextEpoch),
         });
-      }  
+      }
       const indexes = computeProposers(
         this.config.getForkSeqAtEpoch(this.epoch + 1),
         this.proposersNextEpoch.seed,
-        shuffling,
+        this.nextShuffling,
         this.effectiveBalanceIncrements
       );
       this.proposersNextEpoch = {computed: true, indexes};