Spying on JQuery Selectors in Jasmine

Question

I am unit testing some JavaScript with Jasmine and wish to spy on (mock) an element of the DOM that is accessed by a jQuery selector.

My spec is:

it(         


        

Answer 1

The problem is that the two calls to $ return two different jQuery-wrapped nodes.

This should work:

it("should be able to mock DOM call", function(){

  // var node = $("Something");
  // spyOn(node, 'val').andReturn('bar');

  // expect(node.val()).toEqual('bar');
  var node = $("Something");
  spyOn(node, 'val').and.returnValue('bar');

  expect(node.val()).toEqual('bar');
});

Next time, help is more prevalent on the Jasmine mailing list: jasmine-js@googlegroups.com.