test: fix AnalyticsServiceTests by mocking missing dependencies and adding moq

src/Predictalytics.Application.Tests/Services/AnalyticsServiceTests.cs

@@ -7,6 +7,7 @@ using Predictalytics.Domain.Enums;
 using Predictalytics.Domain.Interfaces;
 using Predictalytics.Infrastructure.Data;
 using Predictalytics.Infrastructure.Data.Repositories;
+using Moq;
 using System;
 using System.Collections.Generic;
 using System.Linq;
@@ -35,17 +36,21 @@ public class AnalyticsServiceTests
         var tradeRepo = new TradeRepository(db);
         var marketRepo = new MarketRepository(db);
 
-        var discoveryMock = new MockDiscoveryService();
+        var discoveryMock = new Mock<IDiscoveryService>();
+        var pnlEngineMock = new Mock<IPositionPnLEngine>();
+        var alertRepoMock = new Mock<IAlertRepository>();
+        var watchlistRepoMock = new Mock<IWatchlistRepository>();
         var providers = new List<IPlatformProvider>();
 
         var analyticsService = new AnalyticsService(
             traderRepo,
             tradeRepo,
-            null!, // alertRepo (not used in GetTraderDeepDiveAsync)
-            null!, // watchlistRepo (not used in GetTraderDeepDiveAsync)
+            alertRepoMock.Object,
+            watchlistRepoMock.Object,
             marketRepo,
-            discoveryMock,
+            discoveryMock.Object,
             providers,
+            pnlEngineMock.Object,
             NullLogger<AnalyticsService>.Instance
         );