@Test
  public void getCommentTest() {
    mCommentService = CommentService.getInstance();
    Comment comment = new Comment();
    comment.setId(999999);
    comment.setText("text");
    comment.setBy("by");
    comment.setTime(120000);

    long result = mCommentService.createComment(RuntimeEnvironment.application, comment);
    Assert.assertTrue(result > 0);

    // check item
    Comment dbComment = mCommentService.getComment(RuntimeEnvironment.application, 999999);
    Assert.assertTrue(dbComment != null && dbComment.getId() == 999999);

    // remove item
    mCommentService.removeComment(RuntimeEnvironment.application, 999999);

    // Close connection
    SQLiteDataBaseHelper.getInstance(RuntimeEnvironment.application).getWritableDatabase().close();
  }