Testing all methods of LinkedList.


== Running test suite: LinkedList
-- Running test case: Adding items
0
[]
2
["one","two"]
3
["one","two","three"]

-- Running test case: Removing items
3
["one","two","three"]
2
["one","three"]

-- Running test case: Removing all items
0
[]

-- Running test case: Iterating using forEach method
["one","two","three"]