to install this module simply follow the canonical procedure
for installing any perl module
$ tar zxvf Apache-Test-1.XX.tar.gz
$ cd Apache-Test-1.XX
$ perl Makefile.PL
$ make
$ sudo make install
if you want to run the tests contained within the distribution
you can point to a suitable Apache distribution via
$ perl Makefile.PL -httpd /path/to/your/apache/bin/httpd
$ make
$ make test
$ sudo make install
for further directions, see the README.