Test 1: Operator [] & Iterator traverse testing...               PASSED
Test 2: Insertion function testing...                            PASSED
Test 3: Deletion & Find function testing...                      PASSED
Test 4: Error throwing A - Invalid Iterator testing...           PASSED
Test 5: Error throwing B - Invalid Const_Iterator testing...     PASSED
Test 6: Error throwing C - Invalid Index testing...              PASSED
Test 7: Copy constructure testing...                             PASSED
Test 8: Operator = testing...                                    PASSED
Test 9: At function testing...                                   PASSED
Test 10: Objects' independence testing...                        PASSED
Test 11: Comprehensive testing...                                PASSED
