//-------------------------------------------------------------------------
        public virtual void test_empty()
        {
            CurveSensitivities test = CurveSensitivities.empty();

            assertEquals(test.Info, PortfolioItemInfo.empty());
            assertEquals(test.TypedSensitivities, ImmutableMap.of());
        }
        //-------------------------------------------------------------------------
        public virtual void test_mergedWith_sens_empty()
        {
            CurveSensitivities @base = sut();
            CurveSensitivities test  = @base.mergedWith(CurveSensitivities.empty());

            assertEquals(test, @base);
        }