javascript - AngularJS， Jasmine : Testing a controller function calling a service using $http

Question

我正在尝试测试一个使用服务的 Controller 。但是，service 目前是 null，因为我想在 controller 中隔离测试。

这是当前的测试，它不起作用，因为 BoardService 是 null

beforeEach(inject(function($rootScope, $controller) {

    scope = $rootScope.$new();

    BoardController = $controller('BoardController', { 
        $scope: scope,
        board: {id: 1, tasks: {}},
        BoardService: null
    });

}));


it ("should add a new task", function() {

    var tasksBefore = scope.board.tasks.length;

    scope.addTask(category, 'this is a new task');

    var tasksAfter = scope.board.tasks.length;

    expect(tasksAfter).toBe(tasksBefore + 1);
});

这是来自 Controller 的 addTask() 函数:

$scope.addTask = function(category, task) {

    BoardService.addTask({name : task, category : category.id}).success(function(task_id) {
        // Removed code for simplicity
    });

}

Aaa 最后，service 中的函数:

this.addTask = function(data) {
    return $http.post($rootScope.serverRoot + '/task/create', data);            
}

Answer 1

我认为这个想法是模拟一个BroadService...所以可能是...

beforeEach(inject(function($rootScope, $controller) {

    scope = $rootScope.$new();
    var boardService = {
         addTask:function(task){
            var d = $q.defer();
            d.resolve(/*Whatever your service function returns: if its just a task_id, return an int or something*/);
            return d.promise;
         };
    };

    BoardController = $controller('BoardController', { 
        $scope: scope,
        board: {id: 1, tasks: {}},
        BoardService: boardService
    });

}));


it ("should add a new task", function() {

    var tasksBefore = scope.board.tasks.length;

    scope.addTask(category, 'this is a new task');
    scope.$apply();
    var tasksAfter = scope.board.tasks.length;

    expect(tasksAfter).toBe(tasksBefore + 1);
});