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sandbox_case

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Batteries-included test isolation for Elixir and Phoenix.

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sandbox_case lib sandbox_case sandbox plug.ex
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lib/sandbox_case/sandbox/plug.ex 

if Code.ensure_loaded?(Plug) do

  defmodule SandboxCase.Sandbox.Plug do

    @moduledoc """

    Plug that propagates test sandbox state from the test owner process

    to HTTP request processes (controllers, channels).



    Reads the owner PID from the user-agent header (encoded by

    `Phoenix.Ecto.SQL.Sandbox`) and propagates Ecto sandbox access,

    Mimic/Mox stubs, Cachex sandbox, and FunWithFlags sandbox.

    """

    @behaviour Plug



    @impl Plug

    def init(opts), do: opts



    @impl Plug

    def call(conn, _opts) do

      ua = conn |> Plug.Conn.get_req_header("user-agent") |> List.first("")



      if Code.ensure_loaded?(Phoenix.Ecto.SQL.Sandbox) do

        case Phoenix.Ecto.SQL.Sandbox.decode_metadata(ua) do

          %{owner: owner} ->

            SandboxCase.Sandbox.Propagator.propagate(owner)



          _ ->

            :ok

        end

      end



      conn

    end

  end

end