@Test
  public void shouldUseFindByAnnotationsWherePossible() throws Exception {
    Field f = Page.class.getDeclaredField("byId");
    final WebDriver driver = mock(WebDriver.class);
    final By by = By.id("foo");
    final WebElement element = mock(WebElement.class);

    when(driver.findElement(by)).thenReturn(element);

    ElementLocator locator = newLocator(driver, f);
    locator.findElement();
  }
  @Test
  public void shouldDelegateToDriverInstanceToFindElement() throws Exception {
    Field f = Page.class.getDeclaredField("first");
    final WebDriver driver = mock(WebDriver.class);
    final By by = new ByIdOrName("first");
    final WebElement element = mock(WebElement.class);

    when(driver.findElement(by)).thenReturn(element);

    ElementLocator locator = newLocator(driver, f);
    WebElement returnedElement = locator.findElement();

    assertEquals(element, returnedElement);
  }
  @Test
  public void cachedElementShouldBeCached() throws Exception {
    Field f = Page.class.getDeclaredField("cached");
    final WebDriver driver = mock(WebDriver.class);
    final By by = new ByIdOrName("cached");
    final WebElement element = mock(WebElement.class);

    when(driver.findElement(by)).thenReturn(element);

    ElementLocator locator = newLocator(driver, f);
    locator.findElement();
    locator.findElement();

    verify(driver, times(1)).findElement(by);
  }
  @Test
  public void shouldNotMaskNoSuchElementExceptionIfThrown() throws Exception {
    Field f = Page.class.getDeclaredField("byId");
    final WebDriver driver = mock(WebDriver.class);
    final By by = By.id("foo");

    when(driver.findElement(by)).thenThrow(new NoSuchElementException("Foo"));

    ElementLocator locator = newLocator(driver, f);

    try {
      locator.findElement();
      fail("Should have allowed the exception to bubble up");
    } catch (NoSuchElementException e) {
      // This is expected
    }
  }