Mocha 和 Chai 单元测试 AssertionError

Question

我不明白为什么这些都失败了我尝试过的变化是：

response.body.should.be.a('object').and.to.have.property('id');

和

response.body.should.have.property('id');

我收到错误 Uncaught AssertionError: expected { Object (starss) } to have property 'id'

这是来自 Postman 的我的 JSON 有效载荷

{
    "starss": {
        "id": 1,
        "name": "1",
        "discovery_name": "1",
        "imageFileName": "test1.jpg",
        "datediscovered": "2001-01-01T00:00:00.000Z",
        "colour": "1",
        "mass": "1.000",
        "dfe": "1.000",
        "galaxy_origin": "1",
        "star_categories_id": 1,
        "createdAt": "2021-12-03",
        "updatedAt": "2021-12-12"
    }
}

这是我的摩卡测试

describe('GET/stars/:id',() => {
        it("it should get one star by ID", (done) =>
        {
            // Uncaught AssertionError: expected { Object (starss) } to be a starss
            // star GET by ID
            const starId = 1;
            chai.request(server)
                .get("/stars/" + starId )
                .end((err,response)=>{
                    response.should.have.status(200);
                    response.body.should.be.a('object');
                    response.body.should.be.a('object').and.to.have.property('id');
                    response.body.should.have.property('id');
                    // response.body.should.have.property('name');
                    // response.body.should.have.property('discovery_name');
                    // response.body.should.have.property('imageFileName');
                    // response.body.should.have.property('datediscovered');
                    // response.body.should.have.property('colour');
                    // response.body.should.have.property('mass');
                    // response.body.should.have.property('dfe');
                    // response.body.should.have.property('galaxy_origin');
                    // response.body.should.have.property('star_categories_id');
                    done();
                });

        });

Answer 1

它没有找到 id 属性的原因是因为响应正文只有 starss 的键。 您需要将 go 放入星辰 object 才能访问其密钥。 我曾经使用 mocha/chai codepen 来验证结果：

 mocha.setup('bdd'); var expect = chai.expect; describe('GET/stars/:id',function() { var body = { "starss": { "id": 1, "name": "1", "discovery_name": "1", "imageFileName": "test1.jpg", "datediscovered": "2001-01-01T00:00:00.000Z", "colour": "1", "mass": "1.000", "dfe": "1.000", "galaxy_origin": "1", "star_categories_id": 1, "createdAt": "2021-12-03", "updatedAt": "2021-12-12" } } it("body to be object", function() { expect(body).to.be.a('object'); }) it("it should get one star by ID", function() { console.log(body) expect(body.starss).to.contain.key('id'); // response.body.should.have.property('"id"'); }) }); mocha.run();

codepen 的 URL 在这里： https://codepen.io/alexpyzhianov/pen/KVbeyO