angularjs - 期待间谍但未定义？

Question

试图了解茉莉花间谍，这就是我的测试的样子：

  $scope.switchTurns = function () {
    $scope.playerTurn = !$scope.playerTurn;
    console.log($scope.centrePileCards.length);
    if ($scope.playerTurn == 1) {
      $scope.pickCard();
    }
  }

我的单元测试如下所示：

it('should pick one card',function(){
    var controller = createController();
    spyOn(scope,'pickCard')
    scope.switchTurns();
    scope.playerTurn=1;
    expect(scope.pickCard()).toHaveBeenCalled();

  })

我现在收到此错误：

Error : Expected a spy , but got undefined.

建议？

Answer 1

scope.pickCard()是方法的结果。在您的情况下，它是undefined. 当你使用时，spyOn你应该写：

expect(scope.pickCard).toHaveBeenCalled();