setUp() {
    // Set up clock.
    mockClock = new MockClock();
    mockClock.install();
    root = dom.createDom(TagName.DIV);
    document.body.appendChild(root);
    component = new ProviderSignIn(
        goog.bind(
            IdpsTestHelper.prototype.onClick,
            idpsTestHelper),
        [{
          providerId: 'google.com',
        },
        {
          providerId: 'password',
        }],
        goog.bind(
            TosPpTestHelper.prototype.onTosLinkClick,
            tosPpTestHelper),
        goog.bind(
            TosPpTestHelper.prototype.onPpLinkClick,
            tosPpTestHelper));
    component.render(root);
    idpsTestHelper.setComponent(component);
    infoBarTestHelper.setComponent(component);
    tosPpTestHelper.setComponent(component);
    // Reset previous state of tosPp helper.
    tosPpTestHelper.resetState();
    pageTestHelper.setClock(mockClock).setComponent(component);
  }
@fileoverview Tests for the page displaying a list of supported identity
providers.