fix core tests

core/racing/application/use-cases/AcceptSponsorshipRequestUseCase.test.ts

@@ -166,12 +166,29 @@ describe('AcceptSponsorshipRequestUseCase', () => {
         balance: 1000,
       }),
     );
-    expect(mockLeagueWalletRepo.update).toHaveBeenCalledWith(
-      expect.objectContaining({
-        id: 'league1',
-        balance: expect.objectContaining({ amount: 1400 }),
-      }),
-    );
+    expect(mockLeagueWalletRepo.update).toHaveBeenCalledTimes(1);
+    const updatedLeagueWallet = (mockLeagueWalletRepo.update as Mock).mock.calls[0]?.[0] as LeagueWallet;
+
+    type ToStringable = { toString(): string };
+    const asString = (value: unknown): string => {
+      if (typeof value === 'string') return value;
+      if (
+        value &&
+        typeof value === 'object' &&
+        'toString' in value &&
+        typeof (value as ToStringable).toString === 'function'
+      ) {
+        return (value as ToStringable).toString();
+      }
+      return String(value);
+    };
+
+    const updatedLeagueWalletId = (updatedLeagueWallet as unknown as { id: unknown }).id;
+    const updatedLeagueWalletBalanceAmount = (updatedLeagueWallet as unknown as { balance: { amount: number } })
+      .balance.amount;
+
+    expect(asString(updatedLeagueWalletId)).toBe('league1');
+    expect(updatedLeagueWalletBalanceAmount).toBe(1400);
 
     expect(output.present).toHaveBeenCalledWith({
       requestId: 'req1',