[RU] basics/testing: improvements (#1795)
[RU] basics/testing: improvements (#1795)


nscyclone/elixir-school,doomspork/elixir_school,nscyclone/elixir-school,nscyclone/elixir-school,doomspork/elixir-school,doomspork/elixir-school,doomspork/elixir_school,doomspork/elixir_school,doomspork/elixir-school,nscyclone/elixir-school