Dart-testing I have an assignment in my college and I can't solve it

How i can solve this please using Dart test. (Define a class that implements a Stack and Queue data structures (DS) with their basic functions using Generics stack: pop, push, isEmpty, peek, length queue: enqueue, dequeue, isEmpty, peek, length 1) Write 100000 tests for each defined DS using random data (hint: you may use Random class))