Is it allowed to extend SpyStrategy?

[Valerii Vasin]

Hi,

We are moving from mocha + sinon to jasmine, and I found some cases that look weird after replacing with jasmine.

For example, using sinon stubs I could do smth like this:

Backbone.ajax.yieldsTo('success', { success: true });

When stub will be called - success callback of passed object will be executed with { success: true } as a result.

In Jasmine it's possible to do like this:

this.Backbone.ajax.and.callFake(function(obj) {

    obj.success({ success: true });

});

I view sources and found that also it's possible to do via extending SpyStrategy, like this:

beforeEach(function() {

  jasmine.SpyStrategy.prototype.yieldsTo = function(prop, response) {

      return this.callFake(function(obj) {

          if (typeof obj[prop] === 'function') {

              obj[prop](response);

          }

      });

  };

});

But I am not sure about this - because it's not mentioned in official documentation.

It seems like an API to provide other spy methods based on core methods.

Could I rely on extending SpyStrategy or not?

Thank you.

[Gregg Van Hove]

The `SpyStrategy` is an internal api and not intended for extension by users at this time. We'd like to have some way for users/plugins to extend the behavior of spies in ways similar to this. We aren't totally sure what that would look like at this point, but if you have any ideas, let us know.

Thanks for using jasmine!

-Gregg

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