NFD

# 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: `pip install -U 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".

### To create code coverage report in HTML format, follow these steps:

3. After building the project and running unit tests, use `gcovr` to generate detailed code coverage report in html format. The following is a one-liner:

`mkdir build/coverage; gcovr -r . --object-directory=build --html --html-details -o build/coverage/coverage.html`

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

### To create code coverage report in plain text format, follow these steps:

3. 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`

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

### To view the detailed code coverage report on Jenkins for builds triggered by Gerrit

1. Click on the build link that Jenkins posted as a comment on Gerrit.

2. Click on the label "code-coverage" under "Configurations".

3. Click on "Cobertura Coverage Report" to see the detailed code coverage report for the build.