Elixir: Process registration

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Instructions

🚧 In development

The exercise doesn't pass checking. What to do? 😶

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In my environment the code works, but not here 🤨

My code is different from the teacher's one 🤔

I've read the lessons but nothing is clear 🙄

Прочитал урок — ничего не понятно 🙄

Found a bug? Have something to add? Pull requests are welcome!

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Your exercise will be checked with these tests:

defmodule Test do
  use ExUnit.Case

  describe "process register work" do
    test "list_registered work" do
      {:ok, _} = ProcessRegister.start_link()

      assert ProcessRegister.list_registered() == %{}
    end

    test "add work" do
      {:ok, _} = ProcessRegister.start_link()

      process = spawn(fn -> Process.sleep(:timer.seconds(10)) end)

      assert ProcessRegister.add(process, :some_process) == :ok
      assert %{some_process: ^process} = ProcessRegister.list_registered()

      second_process = spawn(fn -> Process.sleep(:timer.seconds(10)) end)

      assert ProcessRegister.add(second_process, :other_process) == :ok

      assert %{some_process: ^process, other_process: ^second_process} =
               ProcessRegister.list_registered()

      dead_process = spawn(fn -> 2 + 2 end)

      assert ProcessRegister.add(dead_process, :dead) == :ok

      assert %{some_process: ^process, other_process: ^second_process} =
               ProcessRegister.list_registered()
    end

    test "drop work" do
      {:ok, _} = ProcessRegister.start_link()

      process = spawn(fn -> Process.sleep(:timer.seconds(10)) end)

      ProcessRegister.add(process, :new_process)
      assert ProcessRegister.drop(:new_process) == :ok
      assert ProcessRegister.list_registered() == %{}

      assert ProcessRegister.drop(:not_existing_process) == :ok
    end
  end
end

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Teacher's solution will be available in:

20:00

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