Fix tests failing with 'TypeError: Expected Buffer'

Author: ChiefWoods

.github/workflows/build-and-test.yaml

@@ -11,7 +11,7 @@ on:
       - 'Cargo.toml'
       - 'Cargo.lock'
       - 'package.json'
-      - 'bun.lockb'
+      - 'bun.lock'
 
 env:
   SOLANA_VERSION: '2.1.0'
@@ -85,7 +85,7 @@ jobs:
           path: |
             ~/.bun/install/cache
             node_modules
-          key: ${{ runner.os }}-bun-${{ hashFiles('**/bun.lockb') }}
+          key: ${{ runner.os }}-bun-${{ hashFiles('**/bun.lock') }}
           restore-keys: ${{ runner.os }}-bun-
 
       - name: Install Bun

README.md

@@ -101,6 +101,9 @@ anchor build
 bun test
 ```
 
+> [!NOTE]  
+> Tests may fail with an `TypeError: Expected Buffer` error even with no code changes when bumping dependencies. Delete `node_modules`, `bun.lock`, reinstall dependencies and run tests again.
+
 5. Deploy program
 
 ```bash

bun.lock

@@ -257,7 +257,7 @@ describe('cancelOrder', () => {
 
     const postOrderAtaRent = litesvm.getBalance(orderAta);
 
-    expect(postOrderAtaRent).toBe(0n);
+    expect(postOrderAtaRent).toBe(null);
 
     const postTreasuryAta = await getAccount(provider.connection, treasuryAta);
 

bun.lockb

@@ -231,7 +231,7 @@ describe('completeOrder', () => {
 
     const orderAtaRent = litesvm.getBalance(orderAta);
 
-    expect(orderAtaRent).toBe(0n);
+    expect(orderAtaRent).toBe(null);
   });
 
   test('throws if order status is not shipping', async () => {

tests/functional/cancelOrder.test.ts

@@ -89,6 +89,6 @@ describe('unlistItem', () => {
 
     const itemAccBal = litesvm.getBalance(itemPda);
 
-    expect(itemAccBal).toBe(0n);
+    expect(itemAccBal).toBe(null);
   });
 });