CTest/Coverage

Coverage With C++

Currently coverage is only supported on gcc compiler. To perform coverage test, make sure that your code is build with debug symbols, without optimization, and with special flags. These flags are:

-fprofile-arcs -ftest-coverage

Also make sure to pass these flags to C compiler, CXX compiler, and the linker. For example:

CXXFLAGS="-g -O0 -Wall -W -Wshadow -Wunused-variable \
 -Wunused-parameter -Wunused-function -Wunused -Wno-system-headers \
 -Wno-deprecated -Woverloaded-virtual -Wwrite-strings -fprofile-arcs -ftest-coverage"
CFLAGS="-g -O0 -Wall -W -fprofile-arcs -ftest-coverage"
LDFLAGS="-fprofile-arcs -ftest-coverage"

Coverage With Python

Typical usage:

$ cat hello.py

"""
Comment #1
"""
def untested():
  print "untested"

"""
Comment #2
"""
def tested():
  print "tested"

"""
Comment #3
"""
if __name__ == '__main__':
  tested()

$ python /usr/lib/python2.3/trace.py -c --coverdir=. --ignore-dir /usr/lib/python2.3 hello.py

will produce a file

hello.cover

$ cat hello.cover

       """
       Comment #1
    1: """
    1: def untested():
         print "untested"

       """
       Comment #2
       """
    1: def tested():
    1:   print "tested"

       """
       Comment #3
       """
    1: if __name__ == '__main__':
    1:   tested()