Adding new test features in Collection, Queue, Point and Random

This is the list of tests we just added : 

Association : testAssociation

Queue : testQueue, testNextIfAbsent

Array : testSize, testAdd, testRemove, testRemoveLast, testLast, testFirst, testSort, testReversed, testThird, testFourth

String : testAsUpperCase, testAsLowerCase, testCharCodeAt, testCopyFromTo, testSubStrings, testTrim, testReversed, testAsciiValue, testIsVowel

Point : testNew

Random : testAtRandom