Use random values in unit tests

[php-coder]

Replace all occurrences of static values to random. If we need an integer we should return random integer. If we need a string we need to return string with random parts of letters in it.

TODO:

• evaluate CategoryServiceImplTest
  • random id
  • random count
  • random category slug
  • random category name in English
  • random category name in Russian
  • random 2-letters language
  • random date
• evaluate CollectionServiceImplTest
  • random id
  • random user login
  • random boolean
  • random count
  • random date
  • random quantity
  • random collection slug
• evaluate CountryServiceImplTest
  • random id
  • random count
  • random category slug
  • random category name in English
  • random category name in Russian
  • random 2-letters language
  • random date
• evaluate CronServiceImplTest
• evaluate DatabaseImagePersistenceStrategyTest
  • random bytes
  • random id
• evaluate FilesystemImagePersistenceStrategyTest
  • random bytes
• evaluate ImageServiceImplTest
• evaluate SeriesSalesServiceImplTest
• evaluate SeriesServiceImplTest
• evaluate SiteServiceImplTest
• evaluate StampsCatalogServiceImplTest
• evaluate SuspiciousActivityServiceImplTest
• evaluate TimedImagePreviewStrategyTest
  • random bytes
• evaluate TransactionParticipantServiceImplTest
  • random participant name
  • random participant url
• evaluate UsersActivationServiceImplTest
• evaluate UserServiceImplTest
• evaluate CatalogUtilsTest
• evaluate LocaleUtilsTest
• evaluate PagerTest
• evaluate SlugUtilsTest

[php-coder]

Maybe this project could be useful: https://github.com/qala-io/datagen