茉莉花测试中的参考错误：找不到变量

Question

我在我的角度应用程序中有一个简单的控制器，并且相同的茉莉花测试规范返回参考错误。 我的控制器代码：

'use strict'; 
angular.module('taskListAppApp') 
    .controller('MainCtrl', function ($scope) { 
    $scope.todoList = [{ 
     todoText: 'In case of Fire', 
     done: false 
    }, { 
     todoText: 'git commit', 
     done: false 
    }, { 
     todoText: 'git push', 
     done: false 
    }, { 
     todoText: 'exit the building!', 
     done: false 
    }]; 


    $scope.getTotalTodos = function() { 
     return $scope.todoList.length; 
    }; 


    $scope.todoAdd = function() { 
     // Checking for null or empty string 
     if (null !== $scope.taskDesc && "" !== $scope.taskDesc) { 
      $scope.todoList.push({ 
       todoText: $scope.taskDesc, 
       done: false 
      }); 
     } 
    }; 

    // Function to remove the list items 
    $scope.remove = function() { 
     var oldList = $scope.todoList; 
     $scope.todoList = []; 
     angular.forEach(oldList, function (x) { 
      if (!x.done) { 
       $scope.todoList.push(x); 
      } 
     }); 
    }; 
}); 

而且我的测试规范：

"use strict" 

    describe('Controller: MainCtrl', function() {  //describe your object type 
     // beforeEach(module('taskListNgApp2App')); //load module 
     beforeEach(angular.mock.module('taskListAppApp')); 
     describe('MainCtrl', function() { //describe your app name 

      var todoCtrl2; 
      beforeEach(inject(function ($controller, $rootScope) { 
       var scope = $rootScope.$new(); 
       todoCtrl2 = $controller('MainCtrl', { 
        //What does this line do? 
        $scope: scope 
       }); 
      })); 

      it('should have todoCtrl defined', function() { 
       expect(todoCtrl2).toBeDefined(); 
      }); 

     it('trial test for toEqual', function(){ 
      var a = 4; 
      expect(a).toEqual(4); 
     }); 
//THESE 2 FAIL 
     it('should have todoList defined', function() { 
      expect(scope.todoList).toBeDefined(); 
     }); 

     it('should have add method defined', function(){ 
      expect(todoCtrl2.todoAdd()).toBeDefined(); 
     }); 

    }); 
}); 

我得到的错误是：

PhantomJS 2.1.1 (Linux 0.0.0) Controller: MainCtrl MainCtrl should have add method defined FAILED 
    TypeError: undefined is not a function (evaluating 'todoCtrl2.todoAdd()') in test/spec/controllers/main.spec.js (line 58) 
    test/spec/controllers/main.spec.js:58:28 
    loaded@http://localhost:8080/context.js:151:17 
PhantomJS 2.1.1 (Linux 0.0.0): Executed 4 of 4 (2 FAILED) (0.05 secs/0.02 secs) 

我尝试过其他方法来调用的对象/功能，但最后2次测试每次都出现相同的错误，即失败。引发ReferenceError

我在哪里呼吁的对象了？

Answer 1

您需要在函数外部声明var scope。您的范围变量在测试用例中未定义。

试试这个

describe('Controller: MainCtrl', function() {  //describe your object type 
    var scope;  
    // beforeEach(module('taskListNgApp2App')); //load module 

    beforeEach(angular.mock.module('taskListAppApp')); 
    describe('MainCtrl', function() { //describe your app name 

     var todoCtrl2; 
     beforeEach(inject(function ($controller, $rootScope) { 
      scope = $rootScope.$new(); 
      todoCtrl2 = $controller('MainCtrl', { 
       //What does this line do? 
       $scope: scope 
      }); 
     })); 

     it('should have todoCtrl defined', function() { 
      expect(todoCtrl2).toBeDefined(); 
     }); 

     it('trial test for toEqual', function(){ 
      var a = 4; 
      expect(a).toEqual(4); 
     }); 
    //THESE 2 FAIL 
     it('should have todoList defined', function() { 
      expect(scope.todoList).toBeDefined(); 
     }); 

     it('should have add method defined', function(){ 
      expect(scope.todoAdd).toBeDefined(); 
     }); 

    }); 
});