public async Task Delete_product_fail() { var target = new ProductServices(Helper.CreateMemoryUow()); var mockProduct = FixturesDto.ProductsBuildOne(); var result = Task.FromResult(target.CreateAsync(mockProduct)).Result; var newProductId = Guid.NewGuid();; var deleteResult = await target.DeleteByIdAsync(newProductId); Assert.IsFalse(deleteResult); }