angular2测试可观察的守卫

Question

我想测试一个返回可观察响应的守卫。这是我的警卫代码：

awk -F "\t" '{ (if($4 < -10 & $5==BA)), (if($4 < -5 & $5==CA)) ; print $2 = BA/CA} file.txt > out.txt

我的测试代码（注入所需的服务）

import { Injectable } from '@angular/core';
import { Router, CanActivate, ActivatedRouteSnapshot, RouterStateSnapshot } from '@angular/router';
import { Observable } from 'rxjs/Observable';
import { UserService, User } from '@app/user';

@Injectable()
export class SignGuard implements CanActivate {
  constructor(private router: Router, private userService: UserService) { }

  canActivate(next: ActivatedRouteSnapshot, state: RouterStateSnapshot): Observable<boolean> | Promise<boolean> | boolean {
    return this.userService.get().map((user: User) => {
      if (user.isPremium()) {
        this.router.navigate([state.url, 'success']);
        return false;
      } else {
        return true;
      }
    });
  }
}

测试用例

beforeEach(inject([SignGuard, Router], (guard: SignGuard, r: Router) => {
    signGuard = guard;
    activatedSnapshot = new ActivatedRouteSnapshot();
    router = r;
}));

有什么想法吗？