实验成绩计算

tests/Jiaowu.Api.Tests/ExperimentGradesControllerTests.cs

@@ -2,6 +2,7 @@ using Jiaowu.Api.Controllers;
 using Jiaowu.Api.Domain.Academic;
 using Jiaowu.Api.Domain.Identity;
 using Jiaowu.Api.Infrastructure.Auth;
+using Jiaowu.Api.Infrastructure.Grades;
 using Jiaowu.Api.Infrastructure.Persistence;
 using Microsoft.AspNetCore.Mvc;
 using Microsoft.Data.Sqlite;
@@ -262,7 +263,17 @@ public sealed class ExperimentGradesControllerTests
         var studentResult = await fixture
             .ExperimentGrades(fixture.StudentScope)
             .GetMine(CancellationToken.None);
-        Assert.IsType<OkObjectResult>(studentResult);
+        var studentResultOk = Assert.IsType<OkObjectResult>(studentResult);
+        var studentCourse = Assert.Single(
+            Assert.IsAssignableFrom<System.Collections.IEnumerable>(
+                studentResultOk.Value).Cast<object>());
+        Assert.Equal(85m, Property<decimal>(
+            studentCourse,
+            "ExperimentCourseScore"));
+        var persistedExperimentCourseGrade = await fixture.Db
+            .ExperimentCourseGrades.SingleAsync();
+        Assert.Equal(85m, persistedExperimentCourseGrade.WeightedAverageScore);
+        Assert.Equal(1, persistedExperimentCourseGrade.PublishedProjectCount);
 
         var courseSheet = new GradeSheet
         {
@@ -330,6 +341,83 @@ public sealed class ExperimentGradesControllerTests
         Assert.IsType<ConflictObjectResult>(manualOverride);
     }
 
+    [Fact]
+    public async Task ExperimentCourseGrade_IsPersistedAsWeightedAverage()
+    {
+        await using var fixture = await ExperimentGradeFixture.CreateAsync();
+        var firstProject = new ExperimentProject
+        {
+            TeachingTaskId = fixture.Task.Id,
+            Code = "LAB-W1",
+            Name = "低权重实验",
+            ArrangementMode = ExperimentArrangementMode.Centralized,
+            StartDate = fixture.Term.StartDate,
+            EndDate = fixture.Term.EndDate,
+            Status = ExperimentProjectStatus.Published,
+            GradeSheet = new ExperimentGradeSheet
+            {
+                ContributionWeight = 1,
+                Status = ExperimentGradeSheetStatus.Published,
+                Records =
+                [
+                    new ExperimentGradeRecord
+                    {
+                        StudentId = fixture.Student.Id,
+                        ParticipationStatus = ExperimentParticipationStatus.Completed,
+                        TotalScore = 80,
+                        IsPassed = true
+                    }
+                ]
+            }
+        };
+        var secondProject = new ExperimentProject
+        {
+            TeachingTaskId = fixture.Task.Id,
+            Code = "LAB-W2",
+            Name = "高权重实验",
+            ArrangementMode = ExperimentArrangementMode.Centralized,
+            StartDate = fixture.Term.StartDate,
+            EndDate = fixture.Term.EndDate,
+            Status = ExperimentProjectStatus.Published,
+            GradeSheet = new ExperimentGradeSheet
+            {
+                ContributionWeight = 3,
+                Status = ExperimentGradeSheetStatus.Published,
+                Records =
+                [
+                    new ExperimentGradeRecord
+                    {
+                        StudentId = fixture.Student.Id,
+                        ParticipationStatus = ExperimentParticipationStatus.Completed,
+                        TotalScore = 90,
+                        IsPassed = true
+                    }
+                ]
+            }
+        };
+        fixture.Db.AddRange(firstProject, secondProject);
+        await fixture.Db.SaveChangesAsync();
+
+        await ExperimentGradeAggregationService.RefreshTeachingTaskAsync(
+            fixture.Db,
+            fixture.Task.Id,
+            CancellationToken.None);
+
+        var persisted = await fixture.Db.ExperimentCourseGrades.SingleAsync();
+        Assert.Equal(87.5m, persisted.WeightedAverageScore);
+        Assert.Equal(4m, persisted.TotalWeight);
+        Assert.Equal(2, persisted.PublishedProjectCount);
+
+        firstProject.GradeSheet!.Records.Single().TotalScore = 0;
+        await fixture.Db.SaveChangesAsync();
+        var referenced = await ExperimentGradeAggregationService.CalculateAsync(
+            fixture.Db,
+            fixture.Task.Id,
+            [fixture.Student.Id],
+            CancellationToken.None);
+        Assert.Equal(87.5m, referenced.Scores[fixture.Student.Id]);
+    }
+
     [Fact]
     public async Task SelfScheduledSheet_SyncsOnlyActiveBookings()
     {