refactor(tests): update remaining test files for ephemeral team model

src/__tests__/unit/recalculate-elo.test.ts

@@ -11,21 +11,21 @@ import { recalculateAllElo } from '@/lib/elo-utils';
 // Mock Prisma client
 const mockPrisma = {
   player: {
-    updateMany: mock(() => {}).mockResolvedValue({ count: 0 }),
-    update: mock(() => {}).mockResolvedValue({}),
+    updateMany: mock(async () => ({ count: 0 })),
+    update: mock(async () => ({})),
   },
   eloSnapshot: {
-    deleteMany: mock(() => {}).mockResolvedValue({ count: 0 }),
-    create: mock(() => {}).mockResolvedValue({}),
+    deleteMany: mock(async () => ({ count: 0 })),
+    create: mock(async () => ({})),
   },
   partnershipStat: {
-    deleteMany: mock(() => {}).mockResolvedValue({ count: 0 }),
-    findFirst: mock(() => {}).mockResolvedValue(null), // No existing stats initially
-    update: mock(() => {}).mockResolvedValue({}),
-    create: mock(() => {}).mockResolvedValue({}),
+    deleteMany: mock(async () => ({ count: 0 })),
+    findFirst: mock(async () => null), // No existing stats initially
+    update: mock(async () => ({})),
+    create: mock(async () => ({})),
   },
   match: {
-    findMany: mock(() => {}).mockResolvedValue([]),
+    findMany: mock(async () => []),
   },
 };