public async void GetDocumentWithIncorrectId()
        {
            using (var context = DbTestContext.GenerateContextWithData())
                using (var controller = new DocumentsInternalController(context, _mapper))
                {
                    var result = await controller.GetDocument(999);

                    Assert.IsType <NotFoundResult>(result);
                }
        }
        public async void GetDocumentBadModel()
        {
            using (var context = DbTestContext.GenerateContextWithData())
                using (var controller = new DocumentsInternalController(context, _mapper))
                {
                    controller.ModelState.AddModelError("an error", "some error");
                    var result = await controller.GetDocument(4);

                    Assert.IsType <BadRequestObjectResult>(result);
                }
        }
        public async void GetDocumentByIdReturnsCorrectDocument()
        {
            using (var context = DbTestContext.GenerateContextWithData())
                using (var controller = new DocumentsInternalController(context, _mapper))
                {
                    var result = await controller.GetDocument(4);

                    DocumentDtoInternal d4 = GetTestDocumentDtoFromContext(4);

                    Assert.NotNull(result);
                    var okObjectResult = Assert.IsType <OkObjectResult>(result);
                    var resultValue    = okObjectResult.Value;
                    Assert.NotNull(resultValue);
                    Assert.IsAssignableFrom <DocumentDtoInternal>(resultValue);
                    DocumentDtoInternal d = (DocumentDtoInternal)resultValue;

                    Assert.True(d.Equals(d4));
                    Assert.True(d.Equals(d4, true));
                }
        }