使用Jasmine測試簡單的AngularJS服務

Question

我有一個簡單的服務，我試圖進行單元測試。無論我嘗試什麼，searchService都是一個未知的提供者，或者服務是空的（奇怪的是，這不會導致我的測試失敗!!）。

任何人都知道我可能會做錯什麼？

angular.module('app').service('searchService', function($q, _) { // _ is lodash 

    var cache = [ 
    { 
     id: "current", 
     name: "Current", 
     description: "Search current data" 
    }, 
    { 
     id: "historical", 
     name: "Historical", 
     description: "Search historical data" 
    } 
    ]; 

    this.getSearchOptions = function() { 
    var deferred = $q.defer(); 
    deferred.resolve(angular.copy(cache)); 
    return(deferred.promise); 
    }; 

    this.getSearchOptionsByID = function(id) { 
    var deferred = $q.defer(); 
    var searchOption = _.findWithProperty(cache, "id", id); 

    if (searchOption) { 
     deferred.resolve(angular.copy(searchOption)); 
    } else { 
     deferred.reject(); 
    } 
    return(deferred.promise); 
    }; 
    } 
); 

我想創建一個單元測試，在searchService負荷，所以我可以檢查緩存值：

describe("Unit: Testing Services", function() { 
    describe("Search Service:", function() { 
    var service = null; 

    beforeEach(function() { 
     angular.module('app').service('_'); 
    }); 
    // I've also tried the commented out code below 
    //beforeEach(inject(function(searchService) { 
    //this.service = searchService; 
    //})); 
    //it('should contain an searchService', invoke(function(service) { 

    it('should contain an searchService', function(searchService) { 
     expect(searchService).not.to.equal(null); 
    }); 

    it('should contain two search options', function(searchService) { 
     expect(searchService.getSearchOptions()).to.equal(2); 
    }); 
    }); 
}); 

Answer 1

下應無參數的服務工作，也許這可能是一個起點：

describe("Unit: Testing Services", function() { 
    describe("Search Service:", function() { 

     beforeEach(function() { 
      angular.module('app'); 
     }); 

     it('should contain a searchService', 
      inject(function(searchService) { 
       expect(searchService).not.to.equal(null); 
     })); 

     it('should contain two search options', 
      inject(function(searchService) { 
       expect(searchService.getSearchOptions()).to.equal(2); 
     })); 

    }); 
}); 

（您也可以看看這裏：How do I test an AngularJS service with Jasmine?）