Sinon JS "Attempted to wrap ajax which is already wrapped"
33,616
Solution 1
You have to remove the spy after every test. Take a look at the example from the sinon docs:
{
setUp: function () {
sinon.spy(jQuery, "ajax");
},
tearDown: function () {
jQuery.ajax.restore(); // Unwraps the spy
},
"test should inspect jQuery.getJSON's usage of jQuery.ajax": function () {
jQuery.getJSON("/some/resource");
assert(jQuery.ajax.calledOnce);
assertEquals("/some/resource", jQuery.ajax.getCall(0).args[0].url);
assertEquals("json", jQuery.ajax.getCall(0).args[0].dataType);
}
}
So in your jasmine test should look like this:
$(function() {
describe("Category", function() {
beforeEach(function() {
category = new Category;
sinon.spy(jQuery, "ajax");
}
afterEach(function () {
jQuery.ajax.restore();
});
it("should fetch notes", function() {
category.set({code: 123});
category.fetchNotes();
expect(category.trigger).toHaveBeenCalled();
}
})
}
Solution 2
What you need in the very beginning is:
before ->
sandbox = sinon.sandbox.create()
afterEach ->
sandbox.restore()
Then call something like:
windowSpy = sandbox.spy windowService, 'scroll'
- Please notice that I use coffee script.
Author by
trivektor
Updated on July 08, 2022Comments
-
trivektor almost 2 years
I got the above error message when I ran my test. Below is my code (I'm using Backbone JS and Jasmine for testing). Does anyone know why this happens?
$(function() { describe("Category", function() { beforeEach(function() { category = new Category; sinon.spy(jQuery, "ajax"); } it("should fetch notes", function() { category.set({code: 123}); category.fetchNotes(); expect(category.trigger).toHaveBeenCalled(); } }) }