问无法使jasmine.any(函数)工作

EN

function TestObj() {
    var self = this;
    self.getStuff = function(aString, callback) {
        // TODO
    }
}

describe("server communications", function() {
    it("it calls the server", function() {
        var obj = new TestObj();
        obj.getStuff = jasmine.createSpy();
        // swap the above line for this and it makes no difference
        // spyOn(obj, "getStuff");

        var functionVar = function() {
        };

        obj.getStuff("hello", functionVar);

        expect(obj.getStuff).toHaveBeenCalledWith(
                [ "hello", jasmine.any(Function) ]);
    });
});