Add test

----------------------------------- ------ ------ ------ ------ ------ ------
File                                  stmt   bran   cond    sub   time  total
----------------------------------- ------ ------ ------ ------ ------ ------
lib/App/PRT.pm                       100.0    n/a    n/a  100.0    5.4  100.0
lib/App/PRT/CLI.pm                   100.0  100.0  100.0  100.0    7.7  100.0
lib/App/PRT/Collector/Files.pm       100.0  100.0    n/a  100.0   12.3  100.0
lib/App/PRT/Command/DeleteMethod.pm  100.0   80.0    n/a  100.0   10.3   96.4
lib/App/PRT/Command/Help.pm          100.0    n/a    n/a  100.0   12.3  100.0
lib/App/PRT/Command/RenameClass.pm   100.0   80.4   66.7  100.0   15.8   94.5
lib/App/PRT/Command/ReplaceToken.pm  100.0   87.5  100.0  100.0   12.1   97.7
t/App-PRT-CLI.t                        n/a    n/a    n/a    n/a    n/a    n/a
t/App-PRT-Collector-Files.t            n/a    n/a    n/a    n/a    n/a    n/a
t/App-PRT-Command-DeleteMethod.t     100.0    n/a    n/a  100.0    0.9  100.0
t/App-PRT-Command-Help.t             100.0    n/a    n/a  100.0    0.8  100.0
t/App-PRT-Command-RenameClass.t      100.0    n/a    n/a  100.0    1.2  100.0
t/App-PRT-Command-ReplaceToken.t       n/a    n/a    n/a    n/a    n/a    n/a
t/App-PRT.t                          100.0    n/a    n/a  100.0    0.6  100.0
t/test.pm                            100.0   75.0    n/a  100.0   19.5   98.9
t/test.t                             100.0    n/a    n/a  100.0    0.9  100.0
Total                                100.0   84.4   87.5  100.0  100.0   98.2
----------------------------------- ------ ------ ------ ------ ------ ------