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| ==Coverage With C++==
| | {{CMake/Template/Moved}} |
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| 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:
| | This page has moved [https://gitlab.kitware.com/cmake/community/wikis/doc/ctest/Coverage here]. |
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| -fprofile-arcs -ftest-coverage
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| Also make sure to pass these flags to C compiler, CXX compiler, and the linker. For example:
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| CXXFLAGS="-g -O0 -Wall -W -Wshadow -Wunused-variable \
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| -Wunused-parameter -Wunused-function -Wunused -Wno-system-headers \
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| -Wno-deprecated -Woverloaded-virtual -Wwrite-strings -fprofile-arcs -ftest-coverage"
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| CFLAGS="-g -O0 -Wall -W -fprofile-arcs -ftest-coverage"
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| LDFLAGS="-fprofile-arcs -ftest-coverage"
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| ===Shared libs===
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| You might have issues with shared libs, as reported here:
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| * https://twiki.cern.ch/twiki/bin/view/SPI/HowToTestCoverageReports
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| (I was not able to use that trick, on a debian/oldstable and gcc 3.3.5, ref [http://groups.google.com/group/gnu.gcc.help/browse_thread/thread/7c71804863f408ea here]).
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| Other refs found on the net:
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| * http://lists.gforge.inria.fr/pipermail/visp-commits/2006-November/000273.html
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| * http://gcc.gnu.org/ml/gcc-help/2005-04/msg00019.html
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| Conclusion:
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| You should use gcc 3.4 and up, since gcc-3.3.5 and before have this issue.
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| ==Coverage With Python==
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| ===Simple case ===
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| $ cat hello.py
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| <pre>
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| """
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| Comment #1
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| """
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| def untested():
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| print "untested"
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| """
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| Comment #2
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| """
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| def tested():
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| print "tested"
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| """
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| Comment #3
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| """
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| if __name__ == '__main__':
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| tested()
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| </pre>
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| $ python /usr/lib/python2.3/trace.py -c --coverdir=. --ignore-dir /usr/lib/python2.3 hello.py
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| will produce a file
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| hello.cover
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| $ cat hello.cover
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| <pre>
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| """
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| Comment #1
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| 1: """
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| 1: def untested():
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| print "untested"
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| """
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| Comment #2
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| """
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| 1: def tested():
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| 1: print "tested"
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| """
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| Comment #3
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| """
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| 1: if __name__ == '__main__':
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| 1: tested()
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| </pre>
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| ===Complex case ===
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| Using python code from VTK:
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| VTK/Wrapping/Python/vtk/test/Testing.py
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| $ python /usr/lib/python2.3/trace.py -c --coverdir=. --ignore-dir /usr/lib/python2.3 Testing.py
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| will produce:
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| ls *.cover
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| Testing.cover vtk.__init__.cover vtk.filtering.cover vtk.graphics.cover vtk.imaging.cover vtk.io.cover vtk.rendering.cover vtk.util.__init__.cover vtk.util.vtkMethodParser.cover vtk.widgets.cover
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| vtk.__helper.cover vtk.common.cover vtk.genericfiltering.cover vtk.hybrid.cover vtk.infovis.cover vtk.parallel.cover vtk.test.BlackBox.cover vtk.util.vtkConstants.cover vtk.volumerendering.cover
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| Example:
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| * [[Media:Testing.cover.txt|Testing.cover]]
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| * [[Media:Vtk.util.vtkMethodParser.cover.txt|vtk.util.vtkMethodParser.cover]]
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