How to verify that a method was called in jasmine?

Question

I'm a little confused about spying on jasmine. I have code like this, but I'm not sure how to test it.

var params = { param1: "", param2: "link", param3: "1", param4 : "1" }; var func = new myFunction(params ); func.doSomething(); 

How to verify that func.doSomething has been called.

This is the test I wrote so far.

 describe("Library", function() { beforeEach(function() { }); it("should include correct parameters", function() { expect(params.param1).toEqual(""); expect(params.param2).toEqual("link"); expect(params.param3).toEqual("1"); expect(params.param4).toEqual("1"); }); it("should show that method doSomething is called with zero arguments", function() { // I'm not sure how to write test for this. }); }); 

Answer 1

I think you want to use toHaveBeenCalledWith() :

 it("should show that method doSomething is called with zero arguments", function() { // Ensure the spy was called with the correct number of arguments // In this case, no arguments expect(func.doSomething).toHaveBeenCalledWith(); });