complex prop testing

complex.spec.ts

import { newSpecPage } from '@stencil/core/testing';

import { MyComplexPropComponent } from './complex-prop';

describe('complex prop', () => {

    it ('should change to upper case', () => {
        let cmp = new MyComplexPropComponent();
        let res = cmp.toUpper(['aaa', 'bbb', 'ccc']);
        expect(res).toEqual(['AAA', 'BBB', 'CCC']);
    });

    it('should render', async () => {
        const page = await newSpecPage({
            components: [MyComplexPropComponent],
            html: `
                <my-complex-prop>
                </my-complex-prop>
            `
        });
        page.rootInstance.values = ['aaa', 'bbb', 'ccc'];
        await page.waitForChanges();
        expect(page.root).toMatchSnapshot();
    });
    it('should render with data', async () => {
        const page = await newSpecPage({
            components: [MyComplexPropComponent],
            html: '<div></div>'
        });
        let cmp = page.doc.createElement('my-complex-prop');
        (cmp as any).values = ['aaa', 'bbb', 'ccc'];
        page.root.appendChild(cmp);
        await page.waitForChanges();
        expect(page.root).toMatchSnapshot();
    });
});