Вильчинский - Лабораторная работа #1

For `setUp` and `tearDown` examples check Kirill's [ViewModelTest](https://github.com/UNN-VMK-Software/agile-course-practice/blob/master/code/kornyakov-kirill-lab2/ViewModel/src/test/ru/unn/agile/ComplexNumber/viewmodel/ViewModelTests.java#L23). You can made `deque` a field of test class, initialize it in `setUp` and clean in `tearDown`.