如何使用angularJS - 卡玛 - 茉莉测试指令的控制器？ [英] How to test a directive's controller using angularJS-karma-jasmine?

问题描述

写的 waCarousel 指令范围的变量通过的测试： self.awesomeThings 。预计这一测试通过时， self.awsomeThings.length.toBe（3）来的是真的？

Write a passing test for the waCarousel directive scope variable: self.awesomeThings. Expect this test pass when self.awsomeThings.length.toBe(3) to is true?

我怎样才能正确地写这个测试？而我怎么注入指令控制器？

How can I properly write this test? rather how do I inject a directives controller?

指令：

angular.module('carouselApp')
    .directive('waCarousel', function() {
        return {
            templateUrl: '../../../views/carousel/wa.carousel.html',
            controller: function($scope) {
                var self = this;

                self.awesomeThings = [1, 2, 3];

                return $scope.carousel = self;
            }
        }
    });

单元测试：

describe('waCarousel Unit', function() {
  // am I missing a $controller & namespace variable init?
   var $compile,
      $rootScope;


  // Load the myApp module, which contains the directive
  beforeEach(module('carouselApp'));

  // Store references to $rootScope and $compile and $controller
  // so they are available to all tests in this describe block
  beforeEach(inject(function(_$compile_, _$rootScope_, _$controller_){
    // The injector unwraps the underscores (_) from around the parameter names when matching
    $compile = _$compile_;
    $rootScope = _$rootScope_;
    $controller = _$controller_;
     //   WaCarouselCtrl = $controller('WaCarouselCtrl', {
     //       $scope: scope
     //   });
  }));

  it('should have a list of awesomeThings', function() {
    // This wont pass       
    expect(scope.awesomeThings.length).toBe(3);
  });
});

的这是我会怎么做一个典型的观点，而不是指令：的

describe('Controller: MainCtrl', function() {

    // load the controller's module
    beforeEach(module('carouselApp'));

    var MainCtrl,
        scope;

    // Initialize the controller and a mock scope
    beforeEach(inject(function($controller, $rootScope) {
        scope = $rootScope.$new();
        // !!*** this is how I would inject the typical controller of a view **!! //
        MainCtrl = $controller('MainCtrl', {
            $scope: scope
        });
    }));

    it('should attach a list of awesomeThings to the scope', function() {
        expect(scope.awesomeThings.length).toBe(3);
    });
});

我如何合并这两个概念，这样我可以期待 self.awesomeThings.length）.toBe（3）？

更新：

UPDATE:

推荐答案

编译元素，并呼吁 $消化（）后 ，您将有机会获得其中包含与 awesomeThings 转盘对象范围数组：

Compile the element, and after calling $digest(), you will have access to the scope which contains carousel object with awesomeThings array:

describe('waCarousel Unit', function() {
    var scope;

    beforeEach(module('carouselApp'));
    beforeEach(inject(function($rootScope, $compile) {
        var element = '<test></test>';

        scope = $rootScope.$new();

        element = $compile(element)(scope);
        scope.$digest();
    }));

    it('should have a list of awesomeThings', function() {    
        expect(scope.carousel.awesomeThings.length).toBe(3);
    });
});

此外，这里有对角的测试指令，一些有用的链接：

Also, here are some useful links to testing directives in angular:

• 测试指令


• Testing AngularJS指令控制器，茉莉花和噶


• 介绍单元测试：指令

• Testing Directives
• Testing AngularJS directive controllers with Jasmine and Karma
• Introduction to Unit Test: Directives

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