2023
https://habr.com/ru/companies/otus/articles/747852/
https://habr.com/ru/companies/otus/articles/746414/
2021
https://www.baeldung.com/integration-testing-in-spring
2017
TechPrimers - Unit and Integration Tests in Spring Boot JPA Example of 13:59
    https://www.youtube.com/watch?v=ackhP0ubtd4