public void ShouldThrowExceptionWhenGetPostContentsByPostFails()
{
_postContentRepository = new Mock<IPostContentRepository>();
_postContentRepository.Setup(a => a.Find(It.IsAny<Expression<Func<PostContent, bool>>>(), true))
.Throws(new Exception());
_postContentsLogic = new PostContentsLogic(_postContentRepository.Object);
Assert.Throws<BlogException>(() => _postContentsLogic.GetByPostId(1));
}