Question

我正在尝试使用茉莉和业力为角度服务编写测试。我的服务电话有以下代码：

angular.module('omdb', [])
  .factory('myservice', MyService);
MyService.$inject = ['$http'];

function MyService($http) {
  var vm = this;
  var service = {};
  service.getData = function() {
    return $http.get('omdb/mydata.json').then(function(response) {
      return response.data;
    });
  };
  return service;
};

我使用以下文件作为规范测试它：

describe('myservice', function() {
  var mockservicedata = [{
    "name": "value1",
    "id": "1"
  }, {
    "name": "value2",
    "id": "2"
  }, {
    "name": "value3",
    "id": "3"
  }];

  var myservice = {};
  beforeEach(module('omdb'));
  beforeEach(inject(function(_myservice_) {
    myservice = _myservice_;
  }));

  it('should return search myservice data', function() {
    expect(myservice.getData()).toEqual(mockservicedata);
  });
});

基本上会抛出错误：

Expected d({ $$state: Object({ status: 0 }) }) to equal [ Object({ name: 'value1', id: '1' }), Object({ name: 'value2', id: '2' }), Object({ name: 'value3', id: '3' }) ].

stack@http://localhost:59239/movie-app/lib/jasmine-2.3.4/jasmine.js:1482:17 
buildExpectationResult@http://localhost:59239/movie-app/lib/jasmine-2.3.4/jasmine.js:1452:14 
Env/expectationResultFactory@http://localhost:59239/movie-app/lib/jasmine-2.3.4/jasmine.js:583:18       
Spec.prototype.addExpectationResult@http://localhost:59239/movie-app/lib/jasmine-2.3.4/jasmine.js:324:29 addExpectationResult@http://localhost:59239/movie-app/lib/jasmine-2.3.4/jasmine.js:533:16
Expectation.prototype.wrapCompare/<@http://localhost:59239/movie-app/lib/jasmine-2.3.4/jasmine.js:1406:7 
@http://localhost:59239/movie-app/spec/omdb/myservice.spec.js:14:9 
attemptSync@http://localhost:59239/movie-app/lib/jasmine-2.3.4/jasmine.js:1789:9 
QueueRunner.prototype.run@http://localhost:59239/movie-app/lib/jasmine-2.3.4/jasmine.js:1777:9 QueueRunner.prototype.execute@http://localhost:59239/movie-app/lib/jasmine-2.3.4/jasmine.js:1762:5 
Env/queueRunnerFactory@http://localhost:59239/movie-app/lib/jasmine-2.3.4/jasmine.js:627:7 
Spec.prototype.execute@http://localhost:59239/movie-app/lib/jasmine-2.3.4/jasmine.js:353:5 executeNode/<.fn@http://localhost:59239/movie-app/lib/jasmine-2.3.4/jasmine.js:2360:32 attemptAsync@http://localhost:59239/movie-app/lib/jasmine-2.3.4/jasmine.js:1819:9 
QueueRunner.prototype.run@http://localhost:59239/movie-app/lib/jasmine-2.3.4/jasmine.js:1774:9 
QueueRunner.prototype.execute@http://localhost:59239/movie-app/lib/jasmine-2.3.4/jasmine.js:1762:5 
Env/queueRunnerFactory@http://localhost:59239/movie-app/lib/jasmine-2.3.4/jasmine.js:627:7 
executeNode/<.fn@http://localhost:59239/movie-app/lib/jasmine-2.3.4/jasmine.js:2345:13 attemptAsync@http://localhost:59239/movie-app/lib/jasmine-2.3.4/jasmine.js:1819:9 
QueueRunner.prototype.run@http://localhost:59239/movie-app/lib/jasmine-2.3.4/jasmine.js:1774:9 
QueueRunner.prototype.execute@http://localhost:59239/movie-app/lib/jasmine-2.3.4/jasmine.js:1762:5 
Env/queueRunnerFactory@http://localhost:59239/movie-app/lib/jasmine-2.3.4/jasmine.js:627:7 
TreeProcessor/this.execute@http://localhost:59239/movie-app/lib/jasmine-2.3.4/jasmine.js:2209:7 
Env/this.execute@http://localhost:59239/movie-app/lib/jasmine-2.3.4/jasmine.js:678:7 
window.onload@http://localhost:59239/movie-app/lib/jasmine-2.3.4/boot.js:110:5

我不明白为什么它不会将数据返回到测试中。请帮忙

Answer 1

致电myservice.getData()实际上并没有为您提供您期望的数据。

由于getData MyService方法取决于$http的{{1}}方法，因此您应该嘲笑它，然后期望返回数据。

所以你的测试用例应该是这样的：

＆＃13;

get

＆＃13;

希望这有帮助。

Answer 2

getData（）将永远不会返回数据，而是返回promise对象。如果你想测试它，那么首先你必须模拟服务的数据然后你可以调用它并匹配成功处理程序中的结果。

代码如下：

describe('myservice', function() {
  var mockservicedata = [{
    "name": "value1",
    "id": "1"
  }, {
    "name": "value2",
    "id": "2"
  }, {
    "name": "value3",
    "id": "3"
  }];

  var myservice, httpBackend;
  beforeEach(module('omdb'));
  beforeEach(inject(function(_myservice_, $httpBackend) {
    myservice = _myservice_;
    httpBackend = $httpBackend;
  }));

  it('should return search myservice data', function() {
    httpBackend.when("GET", "omdb/mydata.json").respond(mockservicedata);

    var promise = myservice.getData();
    promise.then(function(response) {
       expect(response.data).toEqual(mockservicedata);
    });
    httpBackend.flush();
  });
});

角度服务测试无法返回所需的响应

2 个答案: