Question

180

Stubbing e.preventDefault() in a jasmine test

rated 0 times [ 186] [ 6] / answers: 1 / hits: 18473 / 11 Years ago, thu, april 11, 2013, 12:00:00

I recently added an e.preventDefault() to one of my javascript functions and it broke my jasmine spec. I've tried spyOn(e, 'preventDefault').andReturn(true); but I get e is undefined error. How do I stub e.preventDefault()?

showTopic: function(e) {

  e.preventDefault();

  midParent.prototype.showTopic.call(this, this.model, popup);

  this.topic.render();

}



it(calls the parent, function() {

    var parentSpy = spyOn(midParent.prototype, showTopic);

    this.view.topic = {

      render: function() {}

    };

    this.view.showTopic();

    expect(parentSpy).toHaveBeenCalled();

});

Answers

Only authorized users can answer the question. Please sign in first, or register a free account.

mahogany

Add To Favorites

Follow

Total Points: 645

Total Questions: 107

Total Answers: 98

Location: Israel

Member since Wed, Apr 14, 2021

3 Years ago

answered 11 Years ago jameson · Accepted Answer

Another way to create mock object (with spies you need) is to use jasmine.createSpyObj().
Array containing spy names have to be passed as second parameter.

var e = jasmine.createSpyObj('e', [ 'preventDefault' ]);

this.view.showTopic(e);

expect(e.preventDefault).toHaveBeenCalled();