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tests/Jiaowu.Api.Tests/GraduationAuditRulesTests.cs

@@ -5,6 +5,61 @@ namespace Jiaowu.Api.Tests;
 
 public sealed class GraduationAuditRulesTests
 {
+    [Fact]
+    public void Curriculum_groups_Accept_Any_Options_That_Fulfill_Required_Credits()
+    {
+        var football = new Course { Code = "PE101", Name = "足球", Credits = 1 };
+        var basketball = new Course { Code = "PE102", Name = "篮球", Credits = 1 };
+        var swimming = new Course { Code = "PE103", Name = "游泳", Credits = 1 };
+        var module = new CurriculumModule
+        {
+            Code = "SPORTS",
+            Name = "大学体育",
+            RequiredCredits = 2,
+            Courses = [Option(football), Option(basketball), Option(swimming)]
+        };
+
+        var completed = CurriculumCompletionRules.Evaluate(
+            [module],
+            new HashSet<Guid>([football.Id, swimming.Id]));
+        var incomplete = CurriculumCompletionRules.Evaluate(
+            [module],
+            new HashSet<Guid>([football.Id]));
+
+        Assert.Equal(1, completed.RequirementCount);
+        Assert.Equal(1, completed.PassedRequirementCount);
+        Assert.Empty(completed.MissingRequirements);
+        Assert.Equal(0, incomplete.PassedRequirementCount);
+        Assert.Contains("大学体育（还差 1 学分）", incomplete.MissingRequirements);
+    }
+
+    [Fact]
+    public void Curriculum_groups_Still_Require_Every_Fixed_Course()
+    {
+        var ideology = new Course { Code = "MORAL101", Name = "思想道德与法治", Credits = 3 };
+        var module = new CurriculumModule
+        {
+            Code = "MORAL",
+            Name = "德育课程",
+            RequiredCredits = 3,
+            Courses =
+            [
+                new CurriculumCourse
+                {
+                    CourseId = ideology.Id,
+                    Course = ideology,
+                    Type = CurriculumCourseType.Required
+                }
+            ]
+        };
+
+        var result = CurriculumCompletionRules.Evaluate([module], new HashSet<Guid>());
+
+        Assert.Equal(1, result.RequirementCount);
+        Assert.Equal(0, result.PassedRequirementCount);
+        Assert.Contains("思想道德与法治", result.MissingRequirements);
+    }
+
     [Fact]
     public void Active_student_with_full_credits_and_courses_is_eligible()
     {
@@ -35,4 +90,12 @@ public sealed class GraduationAuditRulesTests
 
         Assert.Equal(GraduationAuditConclusion.Ineligible, conclusion);
     }
+
+    private static CurriculumCourse Option(Course course) =>
+        new()
+        {
+            CourseId = course.Id,
+            Course = course,
+            Type = CurriculumCourseType.Elective
+        };
 }