public void GetAllUnitOfMeasures_ShouldReturnAllValidValues_UnderAllConditions()
        {
            // Arrange & Act
            UnitOfMeasure[] output = CUT.GetAllUnitOfMeasures().ToArray();

            // Assert
            output.ShouldNotBeNull();
            output.ShouldNotBeEmpty();
            output.ShouldContain(UnitOfMeasure.kWh);
            output.ShouldContain(UnitOfMeasure.MWh);
            output.ShouldContain(UnitOfMeasure.GWh);
            output.ShouldContain(UnitOfMeasure.Therm);
            output.ShouldContain(UnitOfMeasure.Decatherm);
            output.ShouldContain(UnitOfMeasure.Ccf);
            output.ShouldContain(UnitOfMeasure.Mcf);
        }