From c10e84da8b612dce9744358ce78ac05d81ac2197 Mon Sep 17 00:00:00 2001
From: pc9pizjb6 <122855890@qq.com>
Date: Sat, 1 Nov 2025 22:56:53 +0800
Subject: [PATCH] ADD file via upload

---
 StudentManagementTest.java | 170 +++++++++++++++++++++++++++++++++++++
 1 file changed, 170 insertions(+)
 create mode 100644 StudentManagementTest.java

diff --git a/StudentManagementTest.java b/StudentManagementTest.java
new file mode 100644
index 0000000..e44f1e8
--- /dev/null
+++ b/StudentManagementTest.java
@@ -0,0 +1,170 @@
+package com.studentmanagement;
+
+import com.studentmanagement.controller.StudentController;
+import com.studentmanagement.model.Student;
+import com.studentmanagement.exception.StudentNotFoundException;
+import com.studentmanagement.exception.DuplicateStudentException;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+import java.util.List;
+import static org.junit.jupiter.api.Assertions.*;
+
+/**
+ * 学生管理系统测试类
+ * 测试Model和Controller层的核心功能
+ */
+public class StudentManagementTest {
+    private StudentController controller;
+
+    @BeforeEach
+    void setUp() {
+        // 每个测试方法执行前初始化控制器
+        controller = new StudentController();
+    }
+
+    @Test
+    void testGetAllStudents() {
+        // 测试获取所有学生
+        List<Student> students = controller.getAllStudents();
+        assertNotNull(students);
+        // 初始数据有3个学生
+        assertTrue(students.size() >= 3);
+    }
+
+    @Test
+    void testGetStudentById_Found() throws StudentNotFoundException {
+        // 测试根据ID查找存在的学生
+        Student student = controller.getStudentById(1);
+        assertNotNull(student);
+        assertEquals(1, student.getId());
+        assertEquals("张三", student.getName());
+    }
+
+    @Test
+    void testGetStudentById_NotFound() {
+        // 测试根据ID查找不存在的学生
+        assertThrows(StudentNotFoundException.class, () -> {
+            controller.getStudentById(999);
+        });
+    }
+
+    @Test
+    void testAddStudent_Success() throws DuplicateStudentException {
+        // 测试添加新学生成功
+        Student newStudent = new Student(10, "测试学生", 22, "软件工程", 88.0);
+        controller.addStudent(newStudent);
+        
+        // 验证学生是否添加成功
+        try {
+            Student addedStudent = controller.getStudentById(10);
+            assertNotNull(addedStudent);
+            assertEquals("测试学生", addedStudent.getName());
+        } catch (StudentNotFoundException e) {
+            fail("学生添加失败，找不到添加的学生");
+        }
+    }
+
+    @Test
+    void testAddStudent_Duplicate() throws DuplicateStudentException {
+        // 测试添加重复ID的学生
+        Student student1 = new Student(20, "重复测试1", 23, "数据库", 92.0);
+        controller.addStudent(student1);
+        
+        // 尝试添加相同ID的学生
+        Student student2 = new Student(20, "重复测试2", 24, "网络", 85.0);
+        assertThrows(DuplicateStudentException.class, () -> {
+            controller.addStudent(student2);
+        });
+    }
+
+    @Test
+    void testUpdateStudent_Success() throws StudentNotFoundException, DuplicateStudentException {
+        // 先添加一个学生用于测试更新
+        Student student = new Student(30, "待更新学生", 20, "Java基础", 75.0);
+        controller.addStudent(student);
+        
+        // 更新学生信息
+        Student updatedStudent = new Student(30, "已更新学生", 21, "Java高级", 85.0);
+        controller.updateStudent(updatedStudent);
+        
+        // 验证更新是否成功
+        Student retrievedStudent = controller.getStudentById(30);
+        assertEquals("已更新学生", retrievedStudent.getName());
+        assertEquals(21, retrievedStudent.getAge());
+        assertEquals("Java高级", retrievedStudent.getCourse());
+        assertEquals(85.0, retrievedStudent.getGrade());
+    }
+
+    @Test
+    void testUpdateStudent_NotFound() {
+        // 测试更新不存在的学生
+        Student student = new Student(999, "不存在的学生", 22, "测试课程", 80.0);
+        assertThrows(StudentNotFoundException.class, () -> {
+            controller.updateStudent(student);
+        });
+    }
+
+    @Test
+    void testDeleteStudent_Success() throws StudentNotFoundException, DuplicateStudentException {
+        // 先添加一个学生用于测试删除
+        Student student = new Student(40, "待删除学生", 22, "测试课程", 78.0);
+        controller.addStudent(student);
+        
+        // 删除学生
+        controller.deleteStudent(40);
+        
+        // 验证删除是否成功
+        assertThrows(StudentNotFoundException.class, () -> {
+            controller.getStudentById(40);
+        });
+    }
+
+    @Test
+    void testDeleteStudent_NotFound() {
+        // 测试删除不存在的学生
+        assertThrows(StudentNotFoundException.class, () -> {
+            controller.deleteStudent(999);
+        });
+    }
+
+    @Test
+    void testGetStudentsByCourse() {
+        // 测试根据课程查找学生
+        List<Student> javaStudents = controller.getStudentsByCourse("Java编程");
+        assertNotNull(javaStudents);
+        // 初始数据中应该有一个Java编程的学生
+        assertTrue(javaStudents.size() >= 1);
+        
+        // 验证所有返回的学生都是Java编程课程
+        for (Student student : javaStudents) {
+            assertTrue(student.getCourse().equalsIgnoreCase("Java编程"));
+        }
+    }
+
+    @Test
+    void testGetStudentsByGradeAbove() {
+        // 测试查找成绩高于指定分数的学生
+        List<Student> highGradeStudents = controller.getStudentsByGradeAbove(88.0);
+        assertNotNull(highGradeStudents);
+        
+        // 验证所有返回的学生成绩都高于等于88.0
+        for (Student student : highGradeStudents) {
+            assertTrue(student.getGrade() >= 88.0);
+        }
+    }
+
+    @Test
+    void testCalculateAverageGradeByCourse() {
+        // 测试计算课程平均成绩
+        double avgGrade = controller.calculateAverageGradeByCourse("Java编程");
+        // 初始数据中Java编程的学生成绩为85.5
+        assertTrue(avgGrade > 0);
+    }
+
+    @Test
+    void testCalculateAverageAge() {
+        // 测试计算平均年龄
+        double avgAge = controller.calculateAverageAge();
+        assertTrue(avgAge > 0);
+    }
+}
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