Angular 如何编写解析测试
我想为我的服务编写测试, 我想确定参数是否发送正常。如何测试该参数Angular 如何编写解析测试,angular,typescript,testbed,Angular,Typescript,Testbed,我想为我的服务编写测试, 我想确定参数是否发送正常。如何测试该参数 import { Injectable } from '@angular/core'; import { Resolve, ActivatedRouteSnapshot, RouterStateSnapshot } from '@angular/router'; import { JhiPaginationUtil } from '.'; @Injectable() export class JhiResolvePagingP
import { Injectable } from '@angular/core';
import { Resolve, ActivatedRouteSnapshot, RouterStateSnapshot } from '@angular/router';
import { JhiPaginationUtil } from '.';
@Injectable()
export class JhiResolvePagingParams implements Resolve<any> {
constructor(private paginationUtil: JhiPaginationUtil) { }
resolve(route: ActivatedRouteSnapshot, state: RouterStateSnapshot) {
const page = route.queryParams['page'] ? route.queryParams['page'] : '1';
const defaultSort = route.data['defaultSort'] ? route.data['defaultSort'] : 'id,asc';
const sort = route.queryParams['sort'] ? route.queryParams['sort'] : defaultSort;
return {
page: this.paginationUtil.parsePage(page),
predicate: this.paginationUtil.parsePredicate(sort),
ascending: this.paginationUtil.parseAscending(sort)
};
}
}
从'@angular/core'导入{Injectable};
从'@angular/router'导入{Resolve,ActivatedRouteSnapshot,RouterStateSnashot};
从“.”导入{JhiPaginationUtil};
@可注射()
导出类JhiResolvePagingParams实现解析{
构造函数(私有分页直到:JhiPaginationUtil){}
解析(路由:ActivatedRouteSnapshot,状态:RouterStateSnashot){
const page=route.queryParams['page']?route.queryParams['page']:'1';
const defaultSort=route.data['defaultSort']?route.data['defaultSort']:'id,asc';
const sort=route.queryParams['sort']?route.queryParams['sort']:defaultSort;
返回{
页面:this.paginationUtil.parsePage(第页),
谓词:this.paginationUtil.parsePredicate(排序),
升序:this.paginationUtil.parseAscending(排序)
};
}
}
您需要为每个测试用例创建一个假的ActivatedRoute
,并将其传递给resolver.resolve()
方法。大概是这样的:
import { JhiResolvePagingParams, JhiPaginationUtil } from '../..';
import { ActivatedRouteSnapshot } from '@angular/router';
import { TestBed, inject } from '@angular/core/testing';
describe('ResolvePagingParams service test', () => {
describe('ResolvePagingParams Links Service Test', () => {
let resolver: JhiResolvePagingParams;
let route: ActivatedRouteSnapshot;
beforeEach(() => {
resolver = new JhiResolvePagingParams(new JhiPaginationUtil());
route = new ActivatedRouteSnapshot();
TestBed.configureTestingModule({
providers: [
JhiResolvePagingParams,
JhiPaginationUtil
]
});
});
it(`should return { page: 1, predicate: 'id',ascending: true } when page and sort and defaultSort is undefined` ,
inject([JhiResolvePagingParams], (service: JhiResolvePagingParams) => {
route.queryParams = { page: undefined, sort: undefined };
route.data = { defaultSort: undefined };
const { page, predicate, ascending } = resolver.resolve(route, null);
expect(page).toEqual(1);
expect(predicate).toEqual('id');
expect(ascending).toEqual(true);
}));
});
});
角度为8/9时: 现在您使用
Testbed.inject([YourComponent/Service])
而不是Testbed.get([YourComponent/Service])
,还需要在@Injectable
注释上定义在:'root'属性中提供的。如果您正在使用angular服务获取数据,那么这可以帮助您了解如何测试是否创建了解析器:
这是我要测试的解析器的单元测试:
describe('TagResolver', () => {
let resolver: TagResolver;
beforeEach(() => {
TestBed.configureTestingModule({
imports: [
HttpClientTestingModule
],
providers: [
]
});
resolver = TestBed.inject(TagResolver);
});
it('should create an instance', () => {
expect(resolver).toBeTruthy();
});
});
这是解析程序:
@Injectable({
providedIn: 'root'
})
export class TagResolver implements Resolve <Observable<Tag[]>> {
constructor(private readonly refTagService: RefTagsService) {
}
resolve(route: ActivatedRouteSnapshot,
state: RouterStateSnapshot):
Observable<any[]> |
Observable<Observable<any[]>> |
Promise<Observable<any[]>> {
return this.refTagService.getRefTags();
}
}
@可注入({
providedIn:'根'
})
导出类TagResolver实现解析{
构造函数(专用只读引用标记服务:引用标记服务){
}
解析(路由:ActivatedRouteSnapshot,
状态:路由器状态(快照):
可观察|
可观察|
允诺{
返回此.refTagService.getRefTags();
}
}
最后,这是解析器从中获取数据的服务:
@Injectable({
providedIn: 'root'
})
export class RefTagsService {
refTagsEndPoint = '/api/tags';
constructor(private readonly http: HttpClient) { }
getRefTags(): Observable<Tag[]> {
console.log('getRefTags');
return this.http.get<Tag[]>(`${this.refTagsEndPoint}`).pipe(
map(res => {
return res;
})
);
}
}
@可注入({
providedIn:'根'
})
导出类引用标记服务{
refTagsEndPoint='/api/tags';
构造函数(私有只读http:HttpClient){}
getRefTags():可观察{
log('getRefTags');
返回this.http.get(`${this.refTagsEndPoint}`).pipe(
地图(res=>{
返回res;
})
);
}
}
解析路径前测试令牌的解析程序示例:
@Injectable({
providedIn: 'root'
})
export class JwtResolverService implements Resolve<string> {
constructor(private authService: AuthService) { }
resolve(route: ActivatedRouteSnapshot, state: RouterStateSnapshot): Observable<string> {
return this.authService.getToken()
.pipe(
tap(value => log.debug(`============= Resolving token: ${value} =============`)),
catchError(err => of(null))
);
}
}
@可注入({
providedIn:'根'
})
导出类JwtResolverService实现解析{
构造函数(私有authService:authService){}
解析(路由:ActivatedRouteSnapshot,状态:RouterStateSnashot):可观察{
返回这个.authService.getToken()
.烟斗(
点击(value=>log.debug(`=========================解析令牌:${value}===============================`)),
catchError(err=>of(null))
);
}
}
测试:
从'@angular/core/testing'导入{TestBed};
从“./jwt resolver.service”导入{JwtResolverService};
从'@angular/common/http/testing'导入{HttpClientTestingModule};
从'rxjs'导入{可观察的};
从“../../auth/auth.service”导入{AuthService};
从'@angular/router'导入{ActivatedRouteSnapshot};
类MockAuthService{
令牌='1234';
getToken():可观察{
归还(此令牌);
}
}
描述('JWT ResolversService',()=>{
let解析器:JwtResolverService;
让authService:authService;
let route:ActivatedRouteSnapshot;
在每个之前(()=>{
TestBed.configureTestingModule({
进口:[
HttpClientTestingModule
],
供应商:[
{提供:AuthService,useClass:MockAuthService},
]
});
路由=新的ActivatedRouteSnapshot();
authService=TestBed.inject(authService);
解析器=TestBed.inject(JwtResolverService);
});
它('应该创建',()=>{
expect(解析器).toBeTruthy();
});
它('应在令牌可用时解析',()=>{
//安排
//表演
解析(路由,空)。订阅(解析=>{
//断言
expect(已解决)。toBeTruthy();
});
})
它('当令牌不可用时不应解析',()=>{
//安排
spyOn(authService,'getToken')。和.returnValue(of(null));
//表演
解析(路由,空)。订阅(解析=>{
//断言
expect(已解决)。toBeFalsy();
});
})
它('错误时不应解决',()=>{
//安排
spyOn(authService,'getSVBToken')。和.returnValue(throwError({status:404}));
//表演
解析(路由,空)。订阅(解析=>{
//断言
expect(已解决)。toBeFalsy();
});
})
});
您创建一个ActivatedRouteSnapshot,填充它,用该路由作为参数调用resolve()方法,并检查它是否返回预期值。您能尝试一下吗?如何构造JhiPaginationUtil?我会模拟它。为JhiPaginationUtil的每个属性创建一个间谍(parsePage
,parsePredicate
,parseAscending
)。然后,您可以将期望值更改为:expect(parsePageSpy)。如果您使用const service=TestBed.get(JhiResolvePagingParams)获取服务,则可以避免注入(…)
import { TestBed } from '@angular/core/testing';
import { JwtResolverService } from './jwt-resolver.service';
import { HttpClientTestingModule } from '@angular/common/http/testing';
import { Observable, of } from 'rxjs';
import { AuthService } from '../../auth/auth.service';
import { ActivatedRouteSnapshot } from '@angular/router';
class MockAuthService {
token = '1234';
getToken(): Observable<string> {
return of(this.token);
}
}
describe('JWT ResolverService', () => {
let resolver: JwtResolverService;
let authService: AuthService;
let route: ActivatedRouteSnapshot;
beforeEach(() => {
TestBed.configureTestingModule({
imports: [
HttpClientTestingModule
],
providers: [
{ provide: AuthService, useClass: MockAuthService },
]
});
route = new ActivatedRouteSnapshot();
authService = TestBed.inject(AuthService);
resolver = TestBed.inject(JwtResolverService);
});
it('should be created', () => {
expect(resolver).toBeTruthy();
});
it('should resolve when token is available', () => {
// arrange
// act
resolver.resolve(route, null).subscribe(resolved => {
// assert
expect(resolved).toBeTruthy();
});
})
it('should not resolve when token is not available', () => {
// arrange
spyOn(authService, 'getToken').and.returnValue(of(null));
// act
resolver.resolve(route, null).subscribe(resolved => {
// assert
expect(resolved).toBeFalsy();
});
})
it('should not resolve on error', () => {
// arrange
spyOn(authService, 'getSVBToken').and.returnValue(throwError({status: 404}));
// act
resolver.resolve(route, null).subscribe(resolved => {
// assert
expect(resolved).toBeFalsy();
});
})
});