优化

tests/Jiaowu.Api.Tests/StudentCurrentCourseQueryTests.cs

@@ -0,0 +1,110 @@
+using Jiaowu.Api.Domain.Academic;
+using Jiaowu.Api.Infrastructure.Academic;
+using Jiaowu.Api.Infrastructure.Persistence;
+using Microsoft.Data.Sqlite;
+using Microsoft.EntityFrameworkCore;
+
+namespace Jiaowu.Api.Tests;
+
+public sealed class StudentCurrentCourseQueryTests
+{
+    [Fact]
+    public async Task GetAsync_CombinesAssignedAndEnrolledCourses_AndDeduplicatesByCourse()
+    {
+        await using var connection = new SqliteConnection("Data Source=:memory:");
+        await connection.OpenAsync();
+        var options = new DbContextOptionsBuilder<AppDbContext>()
+            .UseSqlite(connection)
+            .Options;
+        await using var db = new AppDbContext(options);
+        await db.Database.EnsureCreatedAsync();
+
+        var college = new College { Code = "CS", Name = "计算机学院" };
+        var major = new Major
+        {
+            Code = "CS01", Name = "软件工程", CollegeId = college.Id, DegreeType = "本科"
+        };
+        var administrativeClass = new AdministrativeClass
+        {
+            Code = "SE2026", Name = "软件 2601", MajorId = major.Id, Grade = 2026
+        };
+        var student = new Student
+        {
+            StudentNumber = "20260001", Name = "测试学生",
+            AdministrativeClassId = administrativeClass.Id, EnrollmentDate = new DateOnly(2026, 9, 1)
+        };
+        var term = new AcademicTerm
+        {
+            Code = "2026-1", Name = "2026-2027-1", AcademicYear = "2026-2027",
+            Season = TermSeason.Autumn, StartDate = new DateOnly(2026, 9, 1),
+            EndDate = new DateOnly(2027, 1, 31), IsCurrent = true
+        };
+        var assignedCourse = new Course
+        {
+            Code = "CS101", Name = "程序设计", CollegeId = college.Id, Credits = 3
+        };
+        var selectedCourse = new Course
+        {
+            Code = "CS102", Name = "数据结构", CollegeId = college.Id, Credits = 4
+        };
+        var assignedTask = new TeachingTask
+        {
+            TaskNumber = "T-CS101", Name = "程序设计 2601", AcademicTermId = term.Id,
+            CourseId = assignedCourse.Id, Capacity = 50, Status = TeachingTaskStatus.Published
+        };
+        var duplicateSelectedTask = new TeachingTask
+        {
+            TaskNumber = "T-CS101-E", Name = "程序设计选课", AcademicTermId = term.Id,
+            CourseId = assignedCourse.Id, Capacity = 50, Status = TeachingTaskStatus.Published
+        };
+        var selectedTask = new TeachingTask
+        {
+            TaskNumber = "T-CS102", Name = "数据结构选课", AcademicTermId = term.Id,
+            CourseId = selectedCourse.Id, Capacity = 50, Status = TeachingTaskStatus.Published
+        };
+        var round = new CourseSelectionRound
+        {
+            AcademicTermId = term.Id, Name = "第一轮", StartsAt = DateTime.UtcNow,
+            EndsAt = DateTime.UtcNow.AddDays(1), WithdrawalEndsAt = DateTime.UtcNow.AddDays(2)
+        };
+        var duplicateOffering = new CourseSelectionOffering
+        {
+            CourseSelectionRoundId = round.Id, TeachingTaskId = duplicateSelectedTask.Id, Capacity = 50
+        };
+        var selectedOffering = new CourseSelectionOffering
+        {
+            CourseSelectionRoundId = round.Id, TeachingTaskId = selectedTask.Id, Capacity = 50
+        };
+        db.AddRange(
+            college, major, administrativeClass, student, term, assignedCourse, selectedCourse,
+            assignedTask, duplicateSelectedTask, selectedTask, round, duplicateOffering, selectedOffering,
+            new TeachingTaskClass
+            {
+                TeachingTaskId = assignedTask.Id,
+                AdministrativeClassId = administrativeClass.Id
+            },
+            new CourseEnrollment
+            {
+                CourseSelectionOfferingId = duplicateOffering.Id,
+                StudentId = student.Id,
+                Status = CourseEnrollmentStatus.Enrolled
+            },
+            new CourseEnrollment
+            {
+                CourseSelectionOfferingId = selectedOffering.Id,
+                StudentId = student.Id,
+                Status = CourseEnrollmentStatus.Enrolled
+            });
+        await db.SaveChangesAsync();
+
+        var summaries = await StudentCurrentCourseQuery.GetAsync(
+            db,
+            [new CurrentCourseStudent(student.Id, administrativeClass.Id)],
+            CancellationToken.None);
+
+        var summary = summaries[student.Id];
+        Assert.Equal(2, summary.Courses.Count);
+        Assert.Equal(7, summary.TotalCredits);
+        Assert.Equal(["CS101", "CS102"], summary.Courses.Select(x => x.CourseCode));
+    }
+}