fix：成绩提交显示500实际提交成功

tests/Jiaowu.Api.Tests/ExperimentGradesControllerTests.cs

@@ -14,6 +14,58 @@ namespace Jiaowu.Api.Tests;
 
 public sealed class ExperimentGradesControllerTests
 {
+    [Fact]
+    public async Task CollegeAdmin_CanPublishApprovedExperimentGradeSheet()
+    {
+        await using var fixture = await ExperimentGradeFixture.CreateAsync();
+        var project = new ExperimentProject
+        {
+            TeachingTaskId = fixture.Task.Id,
+            Code = "LAB-COLLEGE-PUBLISH",
+            Name = "学院发布实验",
+            ArrangementMode = ExperimentArrangementMode.Centralized,
+            StartDate = fixture.Term.StartDate,
+            EndDate = fixture.Term.EndDate,
+            Status = ExperimentProjectStatus.Published,
+            PublishedAt = DateTime.UtcNow
+        };
+        fixture.Db.ExperimentProjects.Add(project);
+        await fixture.Db.SaveChangesAsync();
+
+        var administrator = fixture.ExperimentGrades(fixture.AdminScope);
+        await administrator.CreateSheet(
+            new ExperimentGradeSheetRequest(
+                project.Id,
+                1,
+                60,
+                [new ExperimentGradeItemRequest(
+                    "操作",
+                    ExperimentGradeItemKind.Operation,
+                    100)]),
+            CancellationToken.None);
+        var sheet = await fixture.Db.ExperimentGradeSheets.SingleAsync();
+        sheet.Status = ExperimentGradeSheetStatus.Approved;
+        await fixture.Db.SaveChangesAsync();
+
+        var collegeId = await fixture.Db.TeachingTasks
+            .Where(x => x.Id == fixture.Task.Id)
+            .Select(x => x.Course!.CollegeId)
+            .SingleAsync();
+        var collegeScope = new FixedScope(new CurrentUserScope(
+            Guid.NewGuid(),
+            "学院管理员",
+            collegeId,
+            DataScope.College,
+            new HashSet<string>([SystemRoles.CollegeAdmin])));
+
+        Assert.IsType<NoContentResult>(await fixture
+            .ExperimentGrades(collegeScope)
+            .Publish(sheet.Id, CancellationToken.None));
+        Assert.Equal(
+            ExperimentGradeSheetStatus.Published,
+            (await fixture.Db.ExperimentGradeSheets.SingleAsync()).Status);
+    }
+
     [Fact]
     public async Task AssignedTeacher_CanSubmitExperimentGradeSheet()
     {

tests/Jiaowu.Api.Tests/GradesPaginationTests.cs

@@ -148,6 +148,101 @@ public sealed class GradesPaginationTests
         Assert.Contains("F2*60/100", worksheet.Cell("G2").FormulaA1);
     }
 
+    [Fact]
+    public async Task SubmittingCourseGradeSheet_LoadsCourseForNotificationAndReturnsSuccess()
+    {
+        await using var connection = new SqliteConnection("Data Source=:memory:");
+        await connection.OpenAsync();
+        await using var db = new AppDbContext(
+            new DbContextOptionsBuilder<AppDbContext>()
+                .UseSqlite(connection)
+                .Options);
+        await db.Database.EnsureCreatedAsync();
+
+        var college = new College { Code = "CS", Name = "计算机学院" };
+        var major = new Major
+        {
+            Code = "080901",
+            Name = "计算机科学与技术",
+            CollegeId = college.Id,
+            DegreeType = "工学学士"
+        };
+        var administrativeClass = new AdministrativeClass
+        {
+            Code = "CS2026-01",
+            Name = "计科 2026-1 班",
+            MajorId = major.Id,
+            Grade = 2026
+        };
+        var term = new AcademicTerm
+        {
+            Code = "2026-1",
+            Name = "2026—2027 学年第一学期",
+            AcademicYear = "2026-2027",
+            Season = TermSeason.Autumn,
+            StartDate = new DateOnly(2026, 9, 1),
+            EndDate = new DateOnly(2027, 1, 20)
+        };
+        var course = new Course
+        {
+            Code = "CS101",
+            Name = "程序设计基础",
+            CollegeId = college.Id,
+            Credits = 4,
+            TotalHours = 64,
+            LectureHours = 48,
+            PracticeHours = 16,
+            Nature = CourseNature.MajorRequired,
+            AssessmentMethod = AssessmentMethod.Examination
+        };
+        var task = new TeachingTask
+        {
+            TaskNumber = "2026-1-CS101-01",
+            Name = "程序设计基础教学班",
+            AcademicTermId = term.Id,
+            CourseId = course.Id,
+            Capacity = 60,
+            Status = TeachingTaskStatus.Published
+        };
+        var student = new Student
+        {
+            StudentNumber = "202601001",
+            Name = "学生 1",
+            AdministrativeClassId = administrativeClass.Id,
+            EnrollmentYear = 2026,
+            EnrollmentDate = new DateOnly(2026, 9, 1)
+        };
+        var sheet = new GradeSheet
+        {
+            TeachingTaskId = task.Id,
+            RegularWeight = 40,
+            FinalWeight = 60,
+            Records =
+            [
+                new GradeRecord
+                {
+                    StudentId = student.Id,
+                    RegularScore = 80,
+                    FinalScore = 90
+                }
+            ]
+        };
+        db.AddRange(college, major, administrativeClass, term, course, task, student, sheet);
+        await db.SaveChangesAsync();
+        db.ChangeTracker.Clear();
+
+        var result = await new GradesController(db, new AllScope()).Submit(
+            sheet.Id,
+            CancellationToken.None);
+
+        Assert.IsType<NoContentResult>(result);
+        Assert.Equal(
+            GradeSheetStatus.Submitted,
+            await db.GradeSheets.Where(x => x.Id == sheet.Id)
+                .Select(x => x.Status)
+                .SingleAsync());
+    }
+
     private static int ReadInt(object value, string property) =>
         (int)value.GetType().GetProperty(property)!.GetValue(value)!;