(Subject; Software quality Engineering)

“Super Saving Light” is a new software system for control of street illumination and enhancement of its economy, developed for municipality maintenance departments. Among its functions are:

• Commencement and conclusion of street lighting according to daily timetable, scheduled annually.
• Partial illumination (only one of each two lights will be activated)

during the first and last 15 minutes of each illumination period activated by (1).

• Measurement of natural light conditions by special sensors to

ascertain whether natural lighting is insufficient (e.g., on cloudy days), leading to earlier commencement of street illumination and later conclusion of illumination. In these cases, only one of a trio of streetlights will be activated.

• Reduction of illumination time according to traffic density, monitored by a traffic sensor installed at every road section, which will reduce illumination as follows: if traffic density is below one vehicle per minute, only half of the street lights in the road section will be activated; if traffic density is below 0.3 vehicles per minute, only one-third of the lights will be activated. Create five test cases to deal with boundary value situations