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Yi Huang, 02/18/2014 02:46 PM


Code Coverage

This guide has instructions to generate code coverage report on your local machine in HTML or plain text.

Install required command-line tool (gcovr) and configure the project to generate temporary profiling files:

  1. Install gcovr on your machine. sudo easy_install gcovr

  2. When configuring, add option "--with-coverage" (e.g. ./waf configure --with-tests --with-coverage). If the build or running unit tests requires other packages, all the packages should be configured with the option "--with-coverage". For example, ndn-cpp-dev requires ndnd-tlv to run its unit tests, then when configuring ndn-cpp-dev, we should use "./waf configure --with-tests --with-coverage", and when configuring ndnd-tlv, we should use "./waf configure --with-coverage".

To create code coverage report (HTML format) follow the steps below:

  1. After building the project and running unit tests, use gcovr to generate detailed code coverage report in html form. The following is a one-liner:
    mkdir build/coverage; gcovr -r . --object-directory=build/ --html --html-details -o build/coverage/coverage.html

  2. Use any browser to open build/coverage/coverage.html to see the code coverage report.

To create code coverage report (PLAIN TEXT) follow the steps below:

  1. After building the project and running unit tests, use gcovr to generate detailed code coverage report in plain text. The command is:
    gcovr -r . --object-directory=build/ --html-details -o build/coverage.txt

  2. Use any plain text editor/reader to open build/coverage.txt to see the code coverage report.

Updated by Yi Huang over 10 years ago · 7 revisions