public void Test_GetPublisherByCompanyName_CompanyName_Is_Empty()
        {
            //arrange
            PublisherService service = new PublisherService(_unitOfWork.Object);

            //act
            PublisherDTO publisher = service.GetPublisherByCompanyName("");
        }
        public void Test_GetPublisherByCompanyName_Return_Right_Object()
        {
            //arrange
            PublisherService service = new PublisherService(_unitOfWork.Object);

            //act
            PublisherDTO publisher = service.GetPublisherByCompanyName("name1");

            //assert
            Assert.IsNotNull(publisher);
            Assert.AreEqual(1, publisher.PublisherId);
        }