This commit adds tooling to measure how many branches the random simulation
reaches during execution, which helps understand code coverage and identify
untested code paths.
Changes:
- Add coverage build target to Makefile with --coverage flags
- Create measure_coverage.sh script to build, run, and report branch coverage
- Add signal handlers (SIGINT/SIGTERM) to main_test.c for clean shutdown
- Update clean target to remove coverage files (*.gcda, *.gcno)
The script runs the simulation for a specified duration (default 5 seconds),
then uses gcov to analyze which branches were executed. In a 3-second run,
the simulation reaches approximately 32% of all branches (781/2431).
Usage:
./measure_coverage.sh [duration_in_seconds]
Example output shows per-file and total branch coverage statistics.
Claude
4b97b176bd