角js karma/chai - 模擬授權錯誤

Question

我是TDD的新手，正在測試一個authInterceptor（我有chai/mocha/sinon可用於我）角js，它有兩個函數，一個請求和一個responseError 。我成功測試了請求函數，但我不知道如何（掃描文檔）嘲笑401（未授權）錯誤。這裏是攔截器：

export default function AuthInterceptor($q, $injector, $log) { 
    'ngInject'; 

    return { 
    request(config) { 
     let AuthService = $injector.get('AuthService'); 
     if (!config.bypassAuthorizationHeader) { 
     if (AuthService.jwtToken) { 
      config.headers.Authorization = `Bearer ${AuthService.jwtToken}`; 
     } else { 
      $log.warn('Missing JWT', config); 
     } 
     } 
     return config || $q.when(config); 
    }, 
    responseError(rejection) { 
     let AuthService = $injector.get('AuthService'); 
     if (rejection.status === 401) { 
     AuthService.backToAuth(); 
     } 
     return $q.reject(rejection); 
    } 
    }; 

} 

這是我的四個測試。前三「這是塊順利過關，第四個是我在哪裏卡住了，我已經加入的「它」塊註釋：

import angular from 'angular'; 
import AuthInterceptor from './auth.interceptor' 

describe('Auth interceptor test',() => { 

    describe('AuthInterceptor test',() => { 
    let $httpBackend, $http, authInterceptor = AuthInterceptor(); 

    beforeEach(angular.mock.module(($httpProvider, $provide) => { 
     $httpProvider.interceptors.push(AuthInterceptor); 
     $provide.factory('AuthService',() => ({ 
     jwtToken: "hello", 
     backtoAuth: angular.noop 
     })); 
    })); 

    beforeEach(inject(function($injector) { 
     $httpBackend = $injector.get('$httpBackend'); 
     $http = $injector.get('$http'); 
    })) 


    it('should have a request function',() => { 
     let config = {}; 
     expect(authInterceptor.request).to.be.defined; 
     expect(authInterceptor.request).to.be.a('function'); 

    }) 

    it('the request function should set authorization headers', (done) => { 
     $httpBackend.when('GET', 'http://jsonplaceholder.typicode.com/todos') 
     .respond([{ 
      id: 1, 
      title: 'Fake title', 
      userId: 1 
     }]); 
     $http.get('http://jsonplaceholder.typicode.com/todos').then(function(transformedResult) { 

     expect(transformedResult.config.headers.Authorization).to.be.defined; 
     expect(transformedResult.config.headers.Authorization).to.contain('Bearer') 
     done(); 
     }) 
     $httpBackend.flush(); 
    }); 

    it('should have a responseError function',() => { 
     expect(authInterceptor.responseError).to.be.defined; 
     expect(authInterceptor.responseError).to.be.a('function'); 
     //TODO: test return value 
     // see that AuthService.backToAuth() 
    }) 

    it('the error function should call backtoAuth', (done) => { 
    //a url that doesn't give me a 401 like I'm hoping. 
    $httpBackend.when('POST', 'https://wwws.mint.com/overview.event').respond([ 
    //what do I do here? 
    ]) 
    $http.post('https://wwws.mint.com/overview.event').then(function(transformedResult) { 

    console.log("success", transformedResult); 
    done(); 
    }, function(error){ 
    // I can't seem to get in here. if I can, the responseError should be called, which in turn calls backToAuth... 
    console.log("error", error); 
    done(); 
    }) 
    $httpBackend.flush(); 
}); 

Answer 1

第respond參數爲status，它應該是

$httpBackend.when('POST', 'https://wwws.mint.com/overview.event').respond(401); 

這是一件好事使用興農/茉莉花間諜/存根的，而不是在存根方法noops，所以他們的通話可能被測試：

var sandbox; 

beforeEach(() => { 
    sandbox = sinon.sandbox.create(); 
}); 

afterEach(() => { 
    sandbox.restore(); 
}); 

beforeEach(angular.mock.module(($httpProvider, $provide) => { 
    $httpProvider.interceptors.push(AuthInterceptor); 
    $provide.factory('AuthService',() => ({ 
    jwtToken: "hello", 
    backtoAuth: sandbox.stub(); 
    })); 
}));