Test indexdata helper functions

[rgaudin]

trafficstars

#149 introduced additional, non-tested code. Mainly:

• indexdata_cy_call_fct()
• bool_cy_call_fct()
• uint32_cy_call_fct()
• geoposition_cy_call_fct()

[kelson42]

@mgautierfr Considering that you have introduced these methods, I have assigned this ticket to you.