app/node_modules/ionicons/dist/collection/components/icon/test/icon.spec.js

import { newSpecPage } from "@stencil/core/testing";
import { Icon } from "../icon";
describe('icon', () => {
  it('renders', async () => {
    const { root } = await newSpecPage({
      components: [Icon],
      html: '<ion-icon></ion-icon>',
    });
    expect(root).toEqualHtml(`
      <ion-icon class="md" role="img">
        <mock:shadow-root>
          <div class="icon-inner"></div>
        </mock:shadow-root>
      </ion-icon>
    `);
  });
  it('renders rtl with aria-hidden', async () => {
    const { root } = await newSpecPage({
      components: [Icon],
      direction: 'rtl',
      html: `<ion-icon name="chevron-forward" aria-hidden="true"></ion-icon>`,
    });
    expect(root).toEqualHtml(`
      <ion-icon class="md flip-rtl icon-rtl" name="chevron-forward" role="img" aria-hidden="true">
        <mock:shadow-root>
          <div class="icon-inner"></div>
        </mock:shadow-root>
      </ion-icon>
    `);
  });
  it('renders custom aria-label', async () => {
    const { root } = await newSpecPage({
      components: [Icon],
      html: `<ion-icon name="star" aria-label="custom label"></ion-icon>`,
    });
    expect(root).toEqualHtml(`
      <ion-icon class="md" name="star" role="img" aria-label="custom label">
        <mock:shadow-root>
          <div class="icon-inner"></div>
        </mock:shadow-root>
      </ion-icon>
    `);
  });
  it('renders custom label after changing source', async () => {
    const page = await newSpecPage({
      components: [Icon],
      html: `<ion-icon name="chevron-forward" aria-label="custom label"></ion-icon>`,
    });
    const icon = page.root;
    expect(icon).toEqualHtml(`
      <ion-icon class="flip-rtl md" name="chevron-forward" role="img" aria-label="custom label">
        <mock:shadow-root>
          <div class="icon-inner"></div>
        </mock:shadow-root>
      </ion-icon>
    `);
    if (icon) {
      icon.name = 'trash';
    }
    await page.waitForChanges();
    expect(icon).toEqualHtml(`
      <ion-icon class="md" name="trash" role="img" aria-label="custom label">
        <mock:shadow-root>
          <div class="icon-inner"></div>
        </mock:shadow-root>
      </ion-icon>
    `);
  });
});