javascript - 如何对 Angular-UI Bootstrap Modal 组件的 'resolve' 属性进行单元测试

Question

我正在尝试编写一个单元测试，断言正确的变量正在从 Angular-UI Bootstrap 发送到 ui.bootstrap.modal 的 resolve 属性组件。这是我目前所拥有的:

// Controller
angular.module('app')
  .controller('WorkflowListCtrl', function ($scope, $modal) {
    // Setup the edit callback to open a modal
    $scope.edit = function(name) {
      var modalInstance = $modal.open({
        templateUrl: 'partials/editWorkflowModal.html',
        controller: 'WorkflowEditCtrl',
        scope: $scope,
        resolve: {
          name: function() { return name; }
        }
      });
    };
  });

值得注意的是 resolve.name 属性必须是 Angular-UI 组件才能正常工作的函数 - 之前我曾尝试过 resolve: { name: name } 但这没有用。

// Unit Test
describe('Controller: WorkflowListCtrl', function () {

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

  var workflowListCtrl,
    scope,
    modal;

  // Initialize the controller and a mock scope
  beforeEach(inject(function ($controller, $rootScope) {

    scope = $rootScope.$new();
    modal = {
      open: jasmine.createSpy()
    };

    workflowListCtrl = $controller('WorkflowListCtrl', {
      $scope: scope,
      $modal: modal
    });

    it('should allow a workflow to be edited', function() {
      // Edit workflow happens in a modal.
      scope.edit('Barney Rubble');
      expect(modal.open).toHaveBeenCalledWith({
        templateUrl: 'partials/editWorkflowModal.html',
        controller: 'WorkflowEditCtrl',
        scope: scope,
        resolve: {
          name: jasmine.any(Function)
        }
      });
    });
  }));
});

目前，这只是检查 resolve.name 属性是一个函数，但我真正想做的是断言 resolve.name函数返回 Barney Rubble。这种语法显然不起作用:

expect(modal.open).toHaveBeenCalledWith({
  templateUrl: 'partials/editWorkflowModal.html',
  controller: 'WorkflowEditCtrl',
  scope: scope,
  resolve: {
    name: function() { return 'Barney Rubble'; }
  }
});

似乎我想以某种方式监视 resolve.name 函数以检查它是用 Barney Rubble 调用的，但我想不出办法那。有什么想法吗？

Answer 1

所以我想出了一个办法来做到这一点。

在 $scope 上定义一个“私有(private)”函数:

$scope._resolve = function(item) {
  return function() {
    return item;
  };
};

修改原来的$scope函数来调用这个“私有(private)”方法:

$scope.edit = function(name) {
  var modalInstance = $modal.open({
    templateUrl: 'partials/modal.html',
    controller: 'ModalCtrl',
    scope: $scope,
    resolve: {
      name: $scope._resolve(name)
    }
  });
};

更新您的测试以模拟此函数并返回原始值，然后您可以测试它是否已正确传递。

it('should allow a workflow to be edited', function() {
  // Mock out the resolve fn and return our item
  spyOn($scope, '_resolve').and.callFake(function(item) {
    return item;
  });

  // Edit workflow happens in a modal.
  scope.edit('Barney Rubble');
  expect(modal.open).toHaveBeenCalledWith({
    templateUrl: 'partials/modal.html',
    controller: 'ModalCtrl',
    scope: scope,
    resolve: {
      name: 'Barney Rubble'
    }
  });
});