angularjs - 期待 spy 但未定义？

Question

试图让我了解 Jasmine spy ，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 .
当您使用时 spyOn你应该写:
expect(scope.pickCard).toHaveBeenCalled();