在addEventHandler中测试代码 [英] Testing code within addEventHandler

问题描述

我有以下内容 -

window.addEventListener( "orientationchange", () => {
    // Code to test
});

如何在Jasmine中触发此事件？我尝试了以下内容并且无效 -

How can I trigger this event in Jasmine? I have tried the following and it didn't work -

event = document.createEvent("HTMLEvents");
event.initEvent("orientationchange", true, true);

这是班级 -

export class AvailabilityComponent {

    changed: boolean = false;

    constructor(  ) {
        window.addEventListener( "orientationchange", () => {
            this.changed = !this.changed;
        } );
    }

}

谢谢

推荐答案

我已经设法使用以下内容 -

I have managed to this working with the following -

it( 'expect orientationchange to update changed to be truthy', () => {
    event = new Event('orientationchange');
    component.ngOnInit();
    window.dispatchEvent(event);
   // ...
});

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