   # This test case needs to be sync because we rely on
   # log capture which is global.
   use ExUnit.Case
-  import RouterHelper, only: [capture_log: 1]
 
   alias Phoenix.Integration.AdapterTest.ProdEndpoint
   alias Phoenix.Integration.AdapterTest.DevEndpoint

        def call(conn, opts) do
          # Assert we never have a lingering sent message in the inbox
          refute_received {:plug_conn, :sent}

          try do
            super(conn, opts)

      http: [port: "4807"], url: [host: "example.com"], server: true)
  Application.put_env(:endpoint_int, DevEndpoint,
      http: [port: "4808"], debug_errors: true)

  defp capture_log(fun) do
    RouterHelper.capture_log(fn ->
      fun.()

      # Let's monitor the connection process.
      # When it is DOWN, we are sure the error
      # message has been logged. Otherwise the
      # build can fail due to race conditions.
      pid = Application.get_env(:phoenix, :integration_endpoint_pid)
      ref = Process.monitor(pid)
      assert_receive {:DOWN, ^ref, _, _, _}
    end)
  end

  defmodule Router do
    @moduledoc """
