AngularJS - 如何在Jasmine中為enter events指令編寫單元測試

Question

我在AngularJS中創建了enter事件指令 ，因此我想為該指令運行測試用例。 但我不知道如何編寫輸入事件的代碼。

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();
});
})

Answer 1

最重要的是：

• 創建事件對象
• 修改指令
• 寫測試

創建事件並在元素上觸發它

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(); }); }); 

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