Angular 测试获取实际的 HTTP 响应
Angular Testing Getting Actual HTTP Response
我是 angular 单元测试的新手。我想要做的是从我的 API 中获得实际结果。我检查了 this 文档,但据我所知,我应该创建模拟响应。这是我的代码,
myService.ts:
...
public GetAll = (apiname: string): Observable<Object> => {
return this._http.get("foo/" + apiname,{headers:this.options}); //this.options = newHttpHeaders({'ContentType':'application/json','Accept':'application/json'});
}
...
myService.spec.ts:
...
beforeEach(() => {
TestBed.configureTestingModule({
imports: [
HttpClientModule,
HttpClientTestingModule
],
providers: [
MyService
]
});
});
afterEach(inject([HttpTestingController], (backend: HttpTestingController) => {
backend.verify();
}));
it('GetAll() should work', () => {
const testData = {id: "123"};
service.GetAll("items").subscribe(data => {
//console.log(JSON.stringify(data));
});
const req = httpTestingController.expectOne('foo/items');
expect(req.request.method).toEqual('GET');
req.flush(testData);
httpTestingController.verify();
});
当我在控制台中写入结果时,它会写入 'testData' 而不是 'data'。正如我之前所说,我想从我的 API 中获得实际结果,而不是模拟结果。对不起,如果这是一个愚蠢的问题,但我该怎么做呢?谢谢指教。
如果你不是在模拟服务调用,你实际上可以等待响应。由于这是一个异步调用,您必须让测试运行器框架知道您正在等待结果。您可以通过提供 done function
.
来做到这一点
示例代码:
it('GetAll() should work', (done) => {
service.GetAll("items").subscribe(data => {
expect(data).toContain("something");
//expect ...
done(); // <= done fn invoked. This marks end of test case.
});
});
更多信息:https://codecraft.tv/courses/angular/unit-testing/asynchronous/#_jasmines_code_done_code_function
注意 flush 解决了请求,然后你可以使用
service.GetAll(data).subscribe((response : HttpResponse<any>) => {
expect(response.status).toBe(200);
expect(response.body).toEqual(testData);
});
const req = httpTestingController.expectOne('foo/items');
expect(req.request.method).toEqual('GET');
req.flush(new HttpResponse({ status: 200, body: testData }));
这是获取真实数据的有效解决方案
auth.service.te
import { Injectable } from '@angular/core';
import { HttpClient } from '@angular/common/http';
import { Observable } from 'rxjs';
interface Post {
userId: number;
id: number;
title: string;
body: string;
}
@Injectable({
providedIn: 'root',
})
export class AuthService {
constructor(private http: HttpClient) {}
getPost(postId: number): Observable<Post> {
return this.http.get<Post>(
`https://jsonplaceholder.typicode.com/posts/${postId}`
);
}
}
auth.service.spec.ts
import { TestBed } from '@angular/core/testing';
import { AuthService } from './auth.service';
import { HttpClientModule } from '@angular/common/http';
interface Post {
userId: number;
id: number;
title: string;
body: string;
}
describe('AuthService', () => {
let service: AuthService;
beforeEach(() => {
TestBed.configureTestingModule({
imports: [HttpClientModule],
});
service = TestBed.inject(AuthService);
});
it('should get the data successfully', (done: DoneFn) => {
service.getPost(1).subscribe((post: Post) => {
console.log('data is ', post);
expect(post.id).toEqual(1);
done();
});
});
});
希望能有所帮助
我是 angular 单元测试的新手。我想要做的是从我的 API 中获得实际结果。我检查了 this 文档,但据我所知,我应该创建模拟响应。这是我的代码,
myService.ts:
...
public GetAll = (apiname: string): Observable<Object> => {
return this._http.get("foo/" + apiname,{headers:this.options}); //this.options = newHttpHeaders({'ContentType':'application/json','Accept':'application/json'});
}
...
myService.spec.ts:
...
beforeEach(() => {
TestBed.configureTestingModule({
imports: [
HttpClientModule,
HttpClientTestingModule
],
providers: [
MyService
]
});
});
afterEach(inject([HttpTestingController], (backend: HttpTestingController) => {
backend.verify();
}));
it('GetAll() should work', () => {
const testData = {id: "123"};
service.GetAll("items").subscribe(data => {
//console.log(JSON.stringify(data));
});
const req = httpTestingController.expectOne('foo/items');
expect(req.request.method).toEqual('GET');
req.flush(testData);
httpTestingController.verify();
});
当我在控制台中写入结果时,它会写入 'testData' 而不是 'data'。正如我之前所说,我想从我的 API 中获得实际结果,而不是模拟结果。对不起,如果这是一个愚蠢的问题,但我该怎么做呢?谢谢指教。
如果你不是在模拟服务调用,你实际上可以等待响应。由于这是一个异步调用,您必须让测试运行器框架知道您正在等待结果。您可以通过提供 done function
.
示例代码:
it('GetAll() should work', (done) => {
service.GetAll("items").subscribe(data => {
expect(data).toContain("something");
//expect ...
done(); // <= done fn invoked. This marks end of test case.
});
});
更多信息:https://codecraft.tv/courses/angular/unit-testing/asynchronous/#_jasmines_code_done_code_function
注意 flush 解决了请求,然后你可以使用
service.GetAll(data).subscribe((response : HttpResponse<any>) => {
expect(response.status).toBe(200);
expect(response.body).toEqual(testData);
});
const req = httpTestingController.expectOne('foo/items');
expect(req.request.method).toEqual('GET');
req.flush(new HttpResponse({ status: 200, body: testData }));
这是获取真实数据的有效解决方案
auth.service.te
import { Injectable } from '@angular/core';
import { HttpClient } from '@angular/common/http';
import { Observable } from 'rxjs';
interface Post {
userId: number;
id: number;
title: string;
body: string;
}
@Injectable({
providedIn: 'root',
})
export class AuthService {
constructor(private http: HttpClient) {}
getPost(postId: number): Observable<Post> {
return this.http.get<Post>(
`https://jsonplaceholder.typicode.com/posts/${postId}`
);
}
}
auth.service.spec.ts
import { TestBed } from '@angular/core/testing';
import { AuthService } from './auth.service';
import { HttpClientModule } from '@angular/common/http';
interface Post {
userId: number;
id: number;
title: string;
body: string;
}
describe('AuthService', () => {
let service: AuthService;
beforeEach(() => {
TestBed.configureTestingModule({
imports: [HttpClientModule],
});
service = TestBed.inject(AuthService);
});
it('should get the data successfully', (done: DoneFn) => {
service.getPost(1).subscribe((post: Post) => {
console.log('data is ', post);
expect(post.id).toEqual(1);
done();
});
});
});