AngularJS – 如何在 Jasmine 中为输入事件指令编写单元测试答案

【问题标题】：AngularJS – how to write unit-test in Jasmine for enter events directiveAngularJS – 如何在 Jasmine 中为输入事件指令编写单元测试
【发布时间】：2014-09-15 16:45:23
【问题描述】：

我在 AngularJS 中创建了 enter event 指令，所以我想为该指令运行测试用例。但我不知道如何为输入事件编写代码。

describe('Unit Test: Enter Event', function() {
var elm, compile, scope;    

beforeEach(function() {
    module('att.sandbox.attEnterEvent');
    inject(function($compile, $rootScope) {
        compile = $compile;
        scope = $rootScope.$new();
    });
});

/*scenarion 1*/
it("Enetr Key should call the method inside controller", function() {
    elm = angular.element('<input type="text" att-enter-event="enterEvent()">');
    elm = compile(elm)(scope);
    scope.$digest();
    scope.enterEvent = jasmine.createSpy();

     //**Here i want to add enter event test case** 

     expect().toHaveBeenCalled();
});
})

【问题讨论】：

你的意思是输入关键事件是吗？
是的..我想为enter evet写测试用例
我真的不明白你的实际查询是什么
@Sprottenwels 我想为输入事件编写 jasmine 测试用例。
你在写单元测试还是e2e测试？

标签： javascript angularjs unit-testing jasmine angular-directive

【解决方案1】：

最重要的是：

创建事件对象
修改指令
编写测试

Create event 并在元素上触发它

var ev = jQuery.Event("keydown", {
   keyCode: 13
});

el.trigger(ev); // as el is reference to compiled directive

// ---IMPLEMETATION-----------------
angular.module('att.sandbox.attEnterEvent', [])
  .directive('hitEnterEvent', function() {
    return {
      restrict: 'A',
      scope: {
        hitEnterEvent: '&'
      },
      link: function(scope, element, attrs) {
        element.bind("keydown keypress", function(event) {
          if (event.which === 13 || event.keyCode === 13) {
            scope.$apply(function() {
              scope.hitEnterEvent()
            });
            event.preventDefault();
          }
        });
      }
    };
  })
  .controller('hitEntereventCtrl', function($scope) {
    $scope.showinputtext = false;
    $scope.enterEvent = function() {
      $scope.showinputtext = true;
    };
  });

// ---SPECS-------------------------
describe('Unit Test: Enter Event', function() {
  var el, scope;

  beforeEach(function() {
    module('att.sandbox.attEnterEvent');
    inject(function($compile, $rootScope) {
      scope = $rootScope.$new();
      el = $compile(angular.element('<input type="text" hit-enter-event="enterEvent()">'))(scope);
    });
  });

  it("Enter key should call the method inside controller", function() {
    scope.enterEvent = jasmine.createSpy('enterEvent');

    var enterKey = jQuery.Event("keydown", {
      keyCode: 13
    });

    el.trigger(enterKey);

    expect(scope.enterEvent).toHaveBeenCalled();
  });
});

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<link href="//safjanowski.github.io/jasmine-jsfiddle-pack/pack/jasmine.css" rel="stylesheet" />
<script src="//safjanowski.github.io/jasmine-jsfiddle-pack/pack/jasmine-2.0.3-concated.js"></script>
<script src="//ajax.googleapis.com/ajax/libs/angularjs/1.2.23/angular.min.js"></script>
<script src="//ajax.googleapis.com/ajax/libs/angularjs/1.2.23/angular-mocks.js"></script>

【讨论】：