gistfile1.txt

test_helper.exs:

exclude =
  if Node.alive?, do: [], else: [distributed: true]

ExUnit.start(exclude: exclude)



router_test.exs:

defmodule KV.RouterTest do
  use ExUnit.Case, async: true

  @tag :distributed
  test "route requests across nodes" do
    assert KV.Router.route("hello", Kernel, :node, []) ==
      :"foo@localhost"
    assert KV.Router.route("world", Kernel, :node, []) ==
      :"bar@localhost"
  end

  test "raises on unknown entries" do
    assert_raise RuntimeError, ~r/could not find entry/, fn ->
      KV.Router.route(<<0>>, Kernel, :node, [])
    end
  end
end


test output:

✗ mix test
==> kv
......

  1) test route requests across nodes (KV.RouterTest)
     test/kv/router_test.exs:5
     ** (exit) exited in: GenServer.call({KV.RouterTasks, :foo@localhost}, {:start_child, [#PID<0.148.0>, {:nonode@nohost, #PID<0.148.0>}, {:erlang, :apply, [#Function<1.124167133/0 in KV.Router.route/4>, []]}]}, :infinity)
         ** (EXIT) no connection to foo@localhost
     stacktrace:
       (elixir) lib/gen_server.ex:356: GenServer.call/3
       (elixir) lib/task/supervisor.ex:68: Task.Supervisor.async/4
       (kv) lib/kv/router.ex:21: KV.Router.route/4
       test/kv/router_test.exs:6

...

Finished in 0.1 seconds (0.1s on load, 0.01s on tests)
10 tests, 1 failures

Randomized with seed 840118
==> kv_server
Accepting connections on port 4040
........

Finished in 0.01 seconds
8 tests, 0 failures

Randomized with seed 63203