如何在 angular unittest 中发送请求之前验证正文

Question

我在做单元测试时遇到了一些困难，我看了很多文章，但是 none 对我有帮助，似乎很难做一个简单的测试。

我需要测试这个功能，它 returns 和 Observable，我实际上只需要验证 myBody 是否正确构建，我不想做一个实际的HttpRequest.

public myCoolFunction(params) {
    const myBody= new buildMyBodyModel();
    this.buildMyBody(params, myBody); // private function, will set the values for me
    return this.sendService.send(myBody); // make a htppPostRequest and returns to me a Observeble
}

private buildMyBody(params, myBody){
    myBody.name = params.name;
    myBody.color = params.customColor;
    myBody.count = params.number + 1;
}

预期 myBody：

{
    name = 'Jack';
    color = 'Orange';
    count = 4;
}

Answer 1

希望这就是您要找的：-

it('send method should be called with expected param', () => {
    const sendService = TestBed.get(SendService);
    const params = { name: 'Jack', customColor: 'Orange', number: 3 };
    spyOn(sendService, 'send');
    component.myCoolFunction(params);
    expect(sendService.send).toHaveBeenCalledWith({ name: 'Jack', color: 'Orange', count: 4 });
});

如果你只需要测试你的 myBody 是否构建正确，试试这个：-

it('buildMyBody should change myBody according to params', () => {
    const myBody= new buildMyBodyModel();
    const params = { name: 'Jack', customColor: 'Orange', number: 3 };
    (component as any).buildMyBody(params, myBody);
    expect(myBody).toEqual({ name: 'Jack', color: 'Orange', count: 4 });
});

如何在 angular unittest 中发送请求之前验证正文

How to verify the body before sending the request in angular unittest

unit-testing

http-post

testbed

karma-jasmine

angular