GNU gcov gcov is a test coverage program

GNU gcov • gcov is a test coverage program running with gcc. – You can use gcov as a profiling tool to help discover where your optimization efforts will best affect your code. – You can also use gcov along with the other profiling tool, gprof, to assess which parts of your code use the greatest amount of computing time. – You should compile your code without optimization • You can find out some basic performance statistics, such as: – how often each line of code executes – what lines of code are actually executed • gcov creates a logfile `sourcefile. gcov' which indicates how many times each line of a source file `sourcefile. c' has executed. • gcov [-b] [-c] [-v] [-n] [-l] [-f] [-o directory] sourcefile – – b: Write branch frequencies to the output file -c: Write branch frequencies as the number of branches taken -f: Output summaries for each function in addition to the file level summary. -o The directory where the object files live. Gcov will search for `. bb', `. bbg', and `. da' files in this directory

HW 2: Busybox testing (due Oct 19 23: 59) • Busybox is a one-in-all utility for linux commands – Containing around 300 utilities – http: //www. busybox. net/ • For the following 5 utilities (vi, expr, printf, grep, ls) , generate test cases through category-partitioning methods. You have to describe 1. 2. 3. Categories, the members in the categories, properties (including error), and constraints Created test cases according to the all combination of the categories Branch coverage of the target utilities through the set of test cases through gcov