test: refactor mocks to use spyOn for better isolation

src/modules/economy/lootdrop.service.test.ts

@@ -1,7 +1,8 @@
-import { describe, it, expect, mock, beforeEach, afterEach } from "bun:test";
+import { describe, it, expect, mock, beforeEach, afterEach, spyOn } from "bun:test";
 import { lootdropService } from "./lootdrop.service";
 import { lootdrops } from "@/db/schema";
 import { eq, and, isNull } from "drizzle-orm";
+import { economyService } from "./economy.service";
 
 // Mock dependencies BEFORE using service functionality
 const mockInsert = mock();
@@ -34,16 +35,6 @@ mock.module("@/lib/DrizzleClient", () => {
     };
 });
 
-// Mock EconomyService
-const mockModifyUserBalance = mock();
-mock.module("./economy.service", () => {
-    return {
-        economyService: {
-            modifyUserBalance: mockModifyUserBalance
-        }
-    };
-});
-
 // Mock Config
 mock.module("@/lib/config", () => ({
     config: {
@@ -63,6 +54,7 @@ mock.module("@/lib/config", () => ({
 
 describe("lootdropService", () => {
     let originalRandom: any;
+    let mockModifyUserBalance: any;
 
     beforeEach(() => {
         mockInsert.mockClear();
@@ -74,7 +66,6 @@ describe("lootdropService", () => {
         mockWhere.mockClear();
         mockSelect.mockClear();
         mockFrom.mockClear();
-        mockModifyUserBalance.mockClear();
 
         // Reset internal state
         (lootdropService as any).channelActivity = new Map();
@@ -82,10 +73,14 @@ describe("lootdropService", () => {
 
         // Mock Math.random
         originalRandom = Math.random;
+
+        // Spy
+        mockModifyUserBalance = spyOn(economyService, 'modifyUserBalance').mockResolvedValue({} as any);
     });
 
     afterEach(() => {
         Math.random = originalRandom;
+        mockModifyUserBalance.mockRestore();
     });
 
     describe("processMessage", () => {

src/modules/inventory/inventory.service.test.ts

@@ -1,7 +1,9 @@
-import { describe, it, expect, mock, beforeEach } from "bun:test";
+import { describe, it, expect, mock, beforeEach, afterEach, spyOn } from "bun:test";
 import { inventoryService } from "./inventory.service";
 import { inventory, items, userTimers } from "@/db/schema";
-import { app } from "@/index"; // We don't need app here, removed.
+// Helper to mock resolved value for spyOn
+import { economyService } from "@/modules/economy/economy.service";
+import { levelingService } from "@/modules/leveling/leveling.service";
 
 // Mock dependencies
 const mockFindFirst = mock();
@@ -56,20 +58,6 @@ mock.module("@/lib/DrizzleClient", () => {
     };
 });
 
-const mockModifyUserBalance = mock();
-mock.module("@/modules/economy/economy.service", () => ({
-    economyService: {
-        modifyUserBalance: mockModifyUserBalance
-    }
-}));
-
-const mockAddXp = mock();
-mock.module("@/modules/leveling/leveling.service", () => ({
-    levelingService: {
-        addXp: mockAddXp
-    }
-}));
-
 mock.module("@/lib/config", () => ({
     config: {
         inventory: {
@@ -80,6 +68,9 @@ mock.module("@/lib/config", () => ({
 }));
 
 describe("inventoryService", () => {
+    let mockModifyUserBalance: any;
+    let mockAddXp: any;
+
     beforeEach(() => {
         mockFindFirst.mockReset();
         mockFindMany.mockReset();
@@ -92,9 +83,16 @@ describe("inventoryService", () => {
         mockWhere.mockClear();
         mockSelect.mockClear();
         mockFrom.mockClear();
-        mockModifyUserBalance.mockClear();
-        mockAddXp.mockClear();
         mockOnConflictDoUpdate.mockClear();
+
+        // Setup Spies
+        mockModifyUserBalance = spyOn(economyService, 'modifyUserBalance').mockResolvedValue({} as any);
+        mockAddXp = spyOn(levelingService, 'addXp').mockResolvedValue({} as any);
+    });
+
+    afterEach(() => {
+        mockModifyUserBalance.mockRestore();
+        mockAddXp.mockRestore();
     });
 
     describe("addItem", () => {
@@ -124,7 +122,8 @@ describe("inventoryService", () => {
 
             const result = await inventoryService.addItem("1", 1, 5n);
 
-            expect(result.quantity).toBe(15n);
+            expect(result).toBeDefined();
+            expect(result?.quantity).toBe(15n);
             expect(mockUpdate).toHaveBeenCalledWith(inventory);
             expect(mockSet).toHaveBeenCalledWith({ quantity: 15n });
         });
@@ -163,7 +162,8 @@ describe("inventoryService", () => {
             const result = await inventoryService.removeItem("1", 1, 5n);
 
             expect(mockDelete).toHaveBeenCalledWith(inventory);
-            expect(result.quantity).toBe(0n);
+            expect(result).toBeDefined();
+            expect(result?.quantity).toBe(0n);
         });
 
         it("should throw if insufficient quantity", async () => {

src/modules/quest/quest.service.test.ts

@@ -1,7 +1,9 @@
-import { describe, it, expect, mock, beforeEach } from "bun:test";
+import { describe, it, expect, mock, beforeEach, afterEach, spyOn } from "bun:test";
 import { questService } from "./quest.service";
 import { userQuests } from "@/db/schema";
 import { eq, and } from "drizzle-orm";
+import { economyService } from "@/modules/economy/economy.service";
+import { levelingService } from "@/modules/leveling/leveling.service";
 
 // Mock dependencies
 const mockFindFirst = mock();
@@ -45,22 +47,10 @@ mock.module("@/lib/DrizzleClient", () => {
     };
 });
 
-// Mock External Services
-const mockModifyUserBalance = mock();
-mock.module("@/modules/economy/economy.service", () => ({
-    economyService: {
-        modifyUserBalance: mockModifyUserBalance
-    }
-}));
-
-const mockAddXp = mock();
-mock.module("@/modules/leveling/leveling.service", () => ({
-    levelingService: {
-        addXp: mockAddXp
-    }
-}));
-
 describe("questService", () => {
+    let mockModifyUserBalance: any;
+    let mockAddXp: any;
+
     beforeEach(() => {
         mockFindFirst.mockReset();
         mockFindMany.mockReset();
@@ -71,8 +61,15 @@ describe("questService", () => {
         mockSet.mockClear();
         mockWhere.mockClear();
         mockOnConflictDoNothing.mockClear();
-        mockModifyUserBalance.mockClear();
-        mockAddXp.mockClear();
+
+        // Setup Spies
+        mockModifyUserBalance = spyOn(economyService, 'modifyUserBalance').mockResolvedValue({} as any);
+        mockAddXp = spyOn(levelingService, 'addXp').mockResolvedValue({} as any);
+    });
+
+    afterEach(() => {
+        mockModifyUserBalance.mockRestore();
+        mockAddXp.mockRestore();
     });
 
     describe("assignQuest", () => {

src/modules/trade/trade.service.test.ts

@@ -1,6 +1,8 @@
-import { describe, it, expect, mock, beforeEach, setSystemTime } from "bun:test";
+import { describe, it, expect, mock, beforeEach, afterEach, spyOn } from "bun:test";
 import { TradeService } from "./trade.service";
 import { itemTransactions } from "@/db/schema";
+import { economyService } from "@/modules/economy/economy.service";
+import { inventoryService } from "@/modules/inventory/inventory.service";
 
 // Mock dependencies
 const mockInsert = mock();
@@ -22,38 +24,34 @@ mock.module("@/lib/DrizzleClient", () => {
     };
 });
 
-// Mock External Services
-const mockModifyUserBalance = mock();
-mock.module("@/modules/economy/economy.service", () => ({
-    economyService: {
-        modifyUserBalance: mockModifyUserBalance
-    }
-}));
-
-const mockAddItem = mock();
-const mockRemoveItem = mock();
-mock.module("@/modules/inventory/inventory.service", () => ({
-    inventoryService: {
-        addItem: mockAddItem,
-        removeItem: mockRemoveItem
-    }
-}));
-
 describe("TradeService", () => {
     const userA = { id: "1", username: "UserA" };
     const userB = { id: "2", username: "UserB" };
 
+    let mockModifyUserBalance: any;
+    let mockAddItem: any;
+    let mockRemoveItem: any;
+
     beforeEach(() => {
-        mockModifyUserBalance.mockClear();
-        mockAddItem.mockClear();
-        mockRemoveItem.mockClear();
         mockInsert.mockClear();
         mockValues.mockClear();
 
         // Clear sessions
         (TradeService as any).sessions.clear();
+
+        // Spies
+        mockModifyUserBalance = spyOn(economyService, 'modifyUserBalance').mockResolvedValue({} as any);
+        mockAddItem = spyOn(inventoryService, 'addItem').mockResolvedValue({} as any);
+        mockRemoveItem = spyOn(inventoryService, 'removeItem').mockResolvedValue({} as any);
     });
 
+    afterEach(() => {
+        mockModifyUserBalance.mockRestore();
+        mockAddItem.mockRestore();
+        mockRemoveItem.mockRestore();
+    });
+
+
     describe("createSession", () => {
         it("should create a new session", () => {
             const session = TradeService.createSession("thread1", userA, userB);
@@ -108,7 +106,7 @@ describe("TradeService", () => {
             TradeService.addItem("thread1", "1", { id: 10, name: "Sword" }, 2n);
 
             const session = TradeService.getSession("thread1");
-            expect(session?.userA.offer.items[0].quantity).toBe(3n);
+            expect(session?.userA.offer.items[0]!.quantity).toBe(3n);
         });
     });