@MediumTest
  public void test_checkIsNewNews() {
    Calendar c = Calendar.getInstance();
    int day = c.get(Calendar.DAY_OF_MONTH);
    int month = c.get(Calendar.MONTH) + 1;
    int year = c.get(Calendar.YEAR);

    NewsModel newsModel = new NewsModel();
    newsModel.setDatetime(year + "-" + month + "-" + day + " 12:00:00");

    assertTrue(newsModel.isNew());

    newsModel.setDatetime(year + "-" + month + "-" + (day + 1) + " 12:00:00");

    assertFalse(newsModel.isNew());
  }
  @MediumTest
  public void test_formatToYesterdayOrToday_ForYesterday() {
    Calendar c = Calendar.getInstance();
    int day = c.get(Calendar.DAY_OF_MONTH);
    int month = c.get(Calendar.MONTH) + 1;
    int year = c.get(Calendar.YEAR);

    NewsModel newsModel = new NewsModel();
    newsModel.setDatetime(year + "-" + month + "-" + (day - 1) + " 12:00:00");

    assertEquals(" دیروز ", newsModel.formatToYesterdayOrToday());
  }