@Test
  public void if_a_screenshot_is_identical_to_the_previous_one_in_the_step_it_wont_be_added()
      throws IOException {
    TestStep step = new TestStep("a narrative description");

    File screenshot = temporaryFolder.newFile("screenshot.png");
    File source = temporaryFolder.newFile("screenshot.html");
    step.addScreenshot(new ScreenshotAndHtmlSource(screenshot, source));
    step.addScreenshot(new ScreenshotAndHtmlSource(screenshot, source));

    assertThat(step.getScreenshots().size(), is(1));
  }
  @Test
  public void the_test_step_can_have_an_illustration() throws IOException {
    TestStep step = new TestStep("a narrative description");

    File screenshot = temporaryFolder.newFile("screenshot.png");
    File source = temporaryFolder.newFile("screenshot.html");

    assertThat(step.hasScreenshots(), is(false));

    step.addScreenshot(new ScreenshotAndHtmlSource(screenshot, source));

    assertThat(step.hasScreenshots(), is(true));
    assertThat(step.getScreenshots().get(0).getScreenshot(), is(screenshot));
    assertThat(step.getScreenshots().get(0).getHtmlSource().get(), is(source));
  }
  @Test
  public void the_test_step_can_have_more_than_one_illustration() throws IOException {
    TestStep step = new TestStep("a narrative description");

    step.addScreenshot(
        forScreenshotWithImage("/screenshots/google_page_1.png")
            .and()
            .withSource("screenshot.html"));
    step.addScreenshot(
        forScreenshotWithImage("/screenshots/google_page_2.png")
            .and()
            .withSource("screenshot2.html"));

    ScreenshotAndHtmlSource screenshot1 = step.getScreenshots().get(0);
    ScreenshotAndHtmlSource screenshot2 = step.getScreenshots().get(1);

    assertThat(screenshot1.getScreenshot().getName(), is("google_page_1.png"));
    assertThat(screenshot1.getHtmlSource().get().getName(), is("screenshot.html"));

    assertThat(screenshot2.getScreenshot().getName(), is("google_page_2.png"));
    assertThat(screenshot2.getHtmlSource().get().getName(), is("screenshot2.html"));

    assertThat(screenshot1.hashCode(), is(not(screenshot2.hashCode())));
  }