public void ShouldThrowExceptionWhenAddPostContentFails()
{
_postContentRepository = new Mock<IPostContentRepository>();
_postContentRepository.Setup(a => a.Add(It.IsAny<PostContent>())).Throws(new Exception());
_postContentsLogic = new PostContentsLogic(_postContentRepository.Object);
Assert.Throws<BlogException>(() => _postContentsLogic.Add(new Common.Contracts.PostContent()));
}