PPL7 comes with a bunch of unit tests, which are used in continious and nightly builds.

Google test framework

PPL7 uses the Google test framework version 1.6.0. You can download the framework here:

http://code.google.com/p/googletest/downloads/detail?name=gtest-1.6.0.zip

Unpack the file somewhere:

cd
wget "http://code.google.com/p/googletest/downloads/detail?name=gtest-1.6.0.zip"
cd /usr/local
unzip ~/gtest-1.6.0.zip
cd gtest-1.6.0
configure --prefix=/usr/local/gtest-1.6.0

and start unit tests

You must specify the installation path of google test during configure of ppl7. So if you unpacked the framework in /usr/local/gtest-1.6.0, you would call

./configure --enable-gtest=/usr/local/gtest-1.6.0 ...

After ppl7 is build, you can call "make test" to run the testsuite.