public void SubmitRequest_throws_if_input_RequestId_is_null()
        {
            // arrange
            var provider = new PortfolioCalculationRequestProvider();
            var input = new PortfolioCalculationRequestInputModel {RequestId = null};

            // act
            // assert
            Assert.Throws<Exception>(() => provider.SubmitRequest(input));
        }
        public void SubmitRequest_throws_if_input_is_null()
        {
            // arrange
            var provider = new PortfolioCalculationRequestProvider();

            // act
            // assert
            Assert.Throws<Exception>(() => provider.SubmitRequest(null));
        }