fix: лекции когда возвращались не говорили записан ли студент уже или нет

backend/UniVerse.Api.Tests/Helpers/ApiWebApplicationFactory.cs

@@ -177,7 +177,7 @@ public class ApiWebApplicationFactory : WebApplicationFactory<Program>
         var pagedLectures = PagedResult<LectureDto>.Create([lectureDto], 1, 1, 20);
         var pagedEnrollments = PagedResult<EnrollmentDto>.Create([], 0, 1, 20);
 
-        stub.GetAllAsync(Arg.Any<LectureFilterRequest>()).Returns(pagedLectures);
+        stub.GetAllAsync(Arg.Any<LectureFilterRequest>(), Arg.Any<int?>()).Returns(pagedLectures);
         stub.GetByIdAsync(Arg.Any<int>(), Arg.Any<int?>()).Returns(detailDto);
         stub.CreateAsync(Arg.Any<CreateLectureRequest>()).Returns(lectureDto);
         stub.UpdateAsync(Arg.Any<int>(), Arg.Any<UpdateLectureRequest>()).Returns(lectureDto);

backend/UniVerse.Api.Tests/Lectures/LectureServiceTests.cs

@@ -0,0 +1,53 @@
+using Microsoft.EntityFrameworkCore;
+using NSubstitute;
+using UniVerse.Application.DTOs.Lectures;
+using UniVerse.Application.Interfaces;
+using UniVerse.Domain.Entities;
+using UniVerse.Infrastructure.Data;
+using UniVerse.Infrastructure.Services;
+using Xunit;
+
+namespace UniVerse.Api.Tests.Lectures;
+
+public class LectureServiceTests
+{
+    [Fact]
+    public async Task GetAllAsync_MarksLecturesEnrolledByCurrentUser()
+    {
+        await using var db = CreateDbContext();
+        var service = new LectureService(db, Substitute.For<IGamificationService>());
+        var startsAt = DateTime.UtcNow.AddDays(1);
+
+        db.Users.Add(new User { Id = 1, Email = "student@test.local" });
+        db.Courses.Add(new Course { Id = 1, Name = "Course" });
+        db.Lectures.AddRange(
+            Lecture(1, startsAt),
+            Lecture(2, startsAt.AddDays(1)));
+        db.LectureEnrollments.Add(new LectureEnrollment { LectureId = 1, UserId = 1 });
+        await db.SaveChangesAsync();
+
+        var result = await service.GetAllAsync(new LectureFilterRequest(null, null, null, null, null, null, null, null), 1);
+
+        Assert.True(result.Items.Single(item => item.Id == 1).IsEnrolled);
+        Assert.False(result.Items.Single(item => item.Id == 2).IsEnrolled);
+    }
+
+    private static AppDbContext CreateDbContext()
+    {
+        var options = new DbContextOptionsBuilder<AppDbContext>()
+            .UseInMemoryDatabase($"LectureServiceTests_{Guid.NewGuid()}")
+            .Options;
+        return new AppDbContext(options);
+    }
+
+    private static Lecture Lecture(int id, DateTime startsAt) => new()
+    {
+        Id = id,
+        CourseId = 1,
+        Title = $"Lecture {id}",
+        StartsAt = startsAt,
+        EndsAt = startsAt.AddHours(2),
+        IsOpen = true,
+        MaxEnrollments = 30
+    };
+}