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.