jQuery Jasmine click事件：预期事件[object]已在[object]上触发

我有一个小测试（Jasmine+Jasmine jquery）来检查btn是否被点击，并测试其回调是否正确执行，但我面临一些奇怪的错误：

以下是测试：

it("Check if pagination arrows/btns had been clicked", function() {
    // beforeEach to spy on callbacks:
    beforeEach(function() {
        spyOn(comp, "_pageUp");
    });

    var arrowUp = $('.arrow-up').eq(0);
    var spyEvent = spyOnEvent(arrowUp, 'click');

    // Trigger the event:
    $(arrowUp).click();

    expect('click').toHaveBeenTriggeredOn(arrowUp);
    expect(spyEvent).toHaveBeenTriggered();

    // Check if the click callback was correctly called:
    expect(comp._pageUp).toHaveBeenCalled();

});

comp

变量是一个JS对象。我想要的是，当它的

$（'.arrow up'）.eq（0）按钮”，调用_pageUp方法。然后，对这些方法进行测试（comp.\u pageUp（）

和

comp.\u pageDown（）

）

我收到的错误消息是：

    Expected event [object Object] to have been triggered on [object Object]

还有，最后一个提醒：我非常确定夹具已正确加载，并且测试在window.onload事件之后运行

有人能帮我理解我做错了什么吗

谢谢各位。

各位

如前所述，主要问题是关于原型方法

因此，修复了一些错误和spyOn原型声明，对我有效的是：

it("OverlayNavComponent pagination btn had been clicked", function() {
    // spyOn prototype BEFORE instantiate the component:
    spyOn(OverlayNavComponent.prototype, "_pageUp");
    var comp = new OverlayNavComponent();
    comp.init($("#scroll-up-icon"), $("#btn-toggle-menu"), 4);

    var btnId = "#scroll-up-icon";

    // spyOnEvent gets the query string and NOT the element itself as I was doing before:
    var spyEvent = spyOnEvent(btnId, "click");
    // Note: $(btnId).click() did not work:
    $(btnId).trigger("click");

    expect('click').toHaveBeenTriggeredOn(btnId);
    expect(spyEvent).toHaveBeenTriggered();
    expect(comp._pageUp).toHaveBeenCalled();
});

此外，我还必须在“beforeach”方法中加载夹具：

现在，所有的测试都正常了

beforeEach(function() {
    jasmine.getFixtures().fixturesPath = "/fixtures";
    loadFixtures('overlaynavcomp.html');
});