Fixed bug with a Vector{FutureValue} input

[JulStraus]

Problem statement

The dispatch in the function get_future_value_expression is not working when the input to the Case type is a Vector{FutureValue}. This is caused by the filter *in the function objective_operational as it returns as well a Vector{FutureValue} as can be tested with this minimum working example:

vec = Real[1, 2, 3, 4.0]
typeof(vec) # Provides `Vector{Real}`

filter(n -> isa(n, Int64), vec) # Provides still a `Vector{Real}`

Solution

Convert the vector to the corresponding type. As we filter, there is no problem. The change in the test tests this behavior.

[lfbernardino]

Looks ok. It doesn't seem to be an issue to replace the test for Vector{TypeFutureValue} with Vector{FutureValue}.