You are defining the test approach for an Agile project that is developing a system that will control traffic lights at busy road junctions based on input from sensors that measure traffic density and flow rates on the roads leading to the junctions. It is a safety-critical application but, because of the skill and experience of the project team, a risk assessment has determined that its risk level is low.
Which option in the table below represents the BEST test approach for this release?
Key to symbols:
++ (highly recommended)
+ (recommended)
o (neutral / optional)
- (not recommended)
-- (not to be used)