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Use Commanded to build your own Elixir applications following the CQRS/ES pattern.

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commanded test event default_event_handler_error_handling_test.exs
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test/event/default_event_handler_error_handling_test.exs 

defmodule Commanded.Event.DefaultEventHandlerErrorHandlingTest do

  use Commanded.StorageCase



  alias Commanded.Event.DefaultErrorEventHandler

  alias Commanded.ExampleDomain.BankAccount.Commands.OpenAccount

  alias Commanded.ExampleDomain.BankRouter

  alias Commanded.Helpers.{CommandAuditMiddleware, ProcessHelper}



  setup do

    {:ok, pid} = CommandAuditMiddleware.start_link()



    on_exit fn ->

      ProcessHelper.shutdown(pid)

    end



    :ok

  end



  test "should stop event handler on error" do

    account_number = UUID.uuid4()



    {:ok, handler} = DefaultErrorEventHandler.start_link()



    Process.unlink(handler)

    ref = Process.monitor(handler)



    :ok = BankRouter.dispatch(%OpenAccount{account_number: account_number, initial_balance: 1_000})



    assert_receive {:DOWN, ^ref, _, _, _}

    refute Process.alive?(handler)

  end

end