Benchmark application config lookup

.gitignore

@@ -9,3 +9,5 @@ erl_crash.dump
 .elixir_ls
 /priv/plts/*.plt
 /priv/plts/*.plt.hash
+/bench/graphs
+/bench/snapshots

bench/application/config_bench.exs

@@ -0,0 +1,17 @@
+defmodule Commanded.Application.ConfigBench do
+  use Benchfella
+
+  alias Commanded.Application.Config
+  alias Commanded.ExampleApplication
+
+  setup_all do
+    {:ok, _apps} = Application.ensure_all_started(:commanded)
+    {:ok, pid} = ExampleApplication.start_link()
+
+    {:ok, pid}
+  end
+
+  bench "lookup config" do
+    {_adapter, _config} = Config.get(ExampleApplication, :event_store)
+  end
+end

config/bench.exs

@@ -0,0 +1,4 @@
+use Mix.Config
+
+# No logging for benchmarking
+config :logger, backends: []

mix.exs

@@ -30,7 +30,7 @@ defmodule Commanded.Mixfile do
     ]
   end
 
-  defp elixirc_paths(:test),
+  defp elixirc_paths(env) when env in [:bench, :test],
     do: [
       "lib",
       "test/aggregates/support",
@@ -58,10 +58,11 @@ defmodule Commanded.Mixfile do
       {:phoenix_pubsub, "~> 1.1", optional: true},
 
       # Build and test tools
+      {:benchfella, "~> 0.3", only: :bench},
       {:dialyxir, "~> 1.0.0-rc.7", only: :dev, runtime: false},
       {:ex_doc, "~> 0.21", only: :dev},
       {:mix_test_watch, "~> 1.0", only: :dev},
-      {:mox, "~> 0.5", only: :test}
+      {:mox, "~> 0.5", only: [:bench, :test]}
     ]
   end
 

mix.lock

@@ -1,4 +1,5 @@
 %{
+  "benchfella": {:hex, :benchfella, "0.3.5", "b2122c234117b3f91ed7b43b6e915e19e1ab216971154acd0a80ce0e9b8c05f5", [:mix], [], "hexpm"},
   "dialyxir": {:hex, :dialyxir, "1.0.0-rc.7", "6287f8f2cb45df8584317a4be1075b8c9b8a69de8eeb82b4d9e6c761cf2664cd", [:mix], [{:erlex, ">= 0.2.5", [hex: :erlex, repo: "hexpm", optional: false]}], "hexpm"},
   "earmark": {:hex, :earmark, "1.4.2", "3aa0bd23bc4c61cf2f1e5d752d1bb470560a6f8539974f767a38923bb20e1d7f", [:mix], [], "hexpm"},
   "elixir_uuid": {:hex, :elixir_uuid, "1.2.1", "dce506597acb7e6b0daeaff52ff6a9043f5919a4c3315abb4143f0b00378c097", [:mix], [], "hexpm"},

test/event_store/support/subscriber.ex

@@ -1,7 +1,6 @@
 defmodule Commanded.EventStore.Subscriber do
   use GenServer
 
-  alias Commanded.EventStore
   alias Commanded.EventStore.Subscriber
 
   defmodule State do