How to write the jest test for onclick event im salesforce lwc

Question

I have below code. How can i cover in the Jest salesforce?

testhandle(event) {
        let testAbr = event.target.text;
        if (testAbr) {
            this.dispatchEvent(new CustomEvent('testpasss', { detail: { type: 'specilsnumber', input: testAbr } }));
        }
    }
    
    

this is coming on the click of user from UI. onclick={testhandle}

Answer 1

you can do a query of the markup element on which you have added the onclick handler method, and then dispatch a custom event on that element.

Example:

element.shadowRoot.querySelector('.hasOnclick').dispatchEvent(new CustomEvent('click'));

Make sure to add test assert in promise.resolve() to handle asynchronous DOM updates as below:

return Promise.resolve().then(() => {
      expect(value).toBe(expected);
});