shift on empty vector returns undefined PASSED!
shift on empty vector original vector is empty PASSED!
shift on single element vector returns element[0] PASSED!
shift on single element vector removes first element PASSED!
shift on vector returns element[0] PASSED!
shift on vector removes first element PASSED!
shift on initialized vector returns element[0] PASSED!
shift on initialized vector removes first element PASSED!
shift on fixed vector throws exception PASSED!
shift on fixed vector does not shift PASSED!
Shift string vector PASSED!
Shift custom vector class PASSED!
