fonteva-design-guide/force-app/main/default/lwc/pfmInputLookup/__tests__/lookupEventHandling.test.js

## Dev, Build and Test

import { createElement } from 'lwc';
import Lookup from 'c/pfmInputLookup';

const SAMPLE_SEARCH_ITEMS = [
    {
        id: 'id1',
        icon: 'standard:default',
        title: 'Sample item 1',
        subtitle: 'sub1'
    },
    {
        id: 'id2',
        icon: 'standard:default',
        title: 'Sample item 2',
        subtitle: 'sub2'
    }
];

describe('c-pfm-input-lookup event handling', () => {
    afterEach(() => {
        // The jsdom instance is shared across test cases in a single file so reset the DOM
        while (document.body.firstChild) {
            document.body.removeChild(document.body.firstChild);
        }
    });

    it('handleClearSingleSelection works', () => {
        // Create element
        const element = createElement('c-pfm-input-lookup', {
            is: Lookup
        });
        element.isMultiEntry = false;
        element.selection = [SAMPLE_SEARCH_ITEMS[0]];
        document.body.appendChild(element);

        // Clear selection
        const clearSelButton = element.shadowRoot.querySelector('button');
        clearSelButton.click();
        // Check selection
        expect(element.selection.length).toBe(0);
    });

    it('handleClearSelectedItem works', () => {
        // Create element
        const element = createElement('c-pfm-input-lookup', {
            is: Lookup
        });
        element.isMultiEntry = true;
        element.selection = SAMPLE_SEARCH_ITEMS;
        document.body.appendChild(element);

        // Remove a selected item
        const selPills = element.shadowRoot.querySelectorAll('lightning-pill');
        selPills[0].dispatchEvent(new CustomEvent('remove'));
        // Check selection
        expect(element.selection.length).toBe(1);
    });
});