public async Task Should_Return_Sample_If_Found(Domain.GetSample query)
            {
                await _repository.CreateSample(new Domain.CreateSample
                {
                    SampleId     = query.SampleId,
                    SampleAmount = default(double)
                });

                var sample = await _repository.GetSample(query);

                sample.SampleId.Should().Be(query.SampleId);
            }
            public async Task Should_Return_Null_If_Not_Found(Domain.GetSample query)
            {
                var sample = await _repository.GetSample(query);

                sample.Should().BeNull();
            }