const chai = require('chai');
const chaiHttp = require('chai-http');
const app = require('../server'); // 引入 Express 应用
const pool = require('../db'); // 引入数据库连接池
const expect = chai.expect;

chai.use(chaiHttp);

describe('Student Score API Tests', () => {
    // 在测试开始前准备一些测试数据
    before(async () => {
        const connection = await pool.getConnection();
        await connection.query('INSERT INTO students (student_id, student_name, score, call_count) VALUES (123456, "HE", 85, 0)');
        await connection.query('INSERT INTO students (student_id, student_name, score, call_count) VALUES (412536, "dfe", 90, 0)');
        connection.release();
    });

    // 测试结束后清理数据
    after(async () => {
        const connection = await pool.getConnection();
        await connection.query('DELETE FROM students WHERE student_id IN (123456, 412536)');
        connection.release();
    });

    it('should return score of an existing student', (done) => {
        chai.request(app)
            .post('/api/get-score')
            .send({ student_id: 123456 })
            .end((err, res) => {
                expect(res).to.have.status(200);
                expect(res.body).to.be.an('object');
                expect(res.body).to.have.property('student_id', 123456);
                expect(Number(res.body.score)).to.equal(85); // 将 score 转为数值进行比较
                done();
            });
    });    
    it('should return 404 for a non-existing student', (done) => {
        chai.request(app)
            .post('/api/get-score')
            .send({ student_id: 999 }) // 使用不存在的 ID
            .end((err, res) => {
                expect(res).to.have.status(404);
                expect(res.body).to.be.an('object');
                expect(res.body).to.have.property('message', '学生不存在');
                done();
            });
    });
});