* Added functions and removed main
* deleted perimeterTest.java
deleted perimeterTest.java to create PerimeterTest.java
* Recreated PerimeterTest.java
Renamed perimeterTest.java to PerimeterTest.java and added test cases
* deleted PerimeterTest.java
* Recreated PerimeterTest.java
Recreated PerimeterTest.java from perimeterTest.java