add credo check to travis config

.travis.yml

@@ -18,3 +18,4 @@ matrix:
 sudo: false
 after_script:
   - MIX_ENV=test mix coveralls.travis
+  - mix credo

lib/hedwig/adapters/console/connection.ex

@@ -41,7 +41,8 @@ defmodule Hedwig.Adapters.Console.Connection do
   end
 
   defp get_system_user do
-    System.cmd("whoami", [])
+    "whoami"
+    |> System.cmd([])
     |> elem(0)
     |> String.trim()
   end

lib/hedwig/responder/supervisor.ex

@@ -1,4 +1,6 @@
 defmodule Hedwig.Responder.Supervisor do
+  @moduledoc false
+
   def start_link do
     import Supervisor.Spec, warn: false
 

lib/hedwig/test/robot_case.ex

@@ -1,6 +1,7 @@
 defmodule Hedwig.RobotCase do
   use ExUnit.CaseTemplate
 
+  @moduledoc false
   @robot Hedwig.TestRobot
   @default_responders [{Hedwig.Responders.Help, []}, {TestResponder, []}]
 

lib/hedwig/test/test_robot.ex

@@ -3,6 +3,8 @@ Code.ensure_compiled(Hedwig.Adapters.Test)
 defmodule Hedwig.TestRobot do
   use Hedwig.Robot, otp_app: :hedwig, adapter: Hedwig.Adapters.Test
 
+  @moduledoc false
+
   def handle_connect(%{name: name} = state) do
     if :undefined == :global.whereis_name(name) do
       :yes = :global.register_name(name, self())

lib/mix/tasks/hedwig.gen.robot.ex

@@ -78,10 +78,14 @@ defmodule Mix.Tasks.Hedwig.Gen.Robot do
   end
 
   defp default_robot(app) do
+    alias_module |> Module.concat(Robot)
+  end
+
+  defp alias_module do
     case Application.get_env(app, :app_namespace, app) do
       ^app -> app |> to_string |> Macro.camelize
       mod  -> mod |> inspect
-    end |> Module.concat(Robot)
+    end
   end
 
   defp available_adapters(deps) do
@@ -136,7 +140,8 @@ defmodule Mix.Tasks.Hedwig.Gen.Robot do
   end
 
   defp prompt_for_name do
-    Mix.shell.prompt("What would you like to name your bot?:")
+    "What would you like to name your bot?:"
+    |> Mix.shell.prompt
     |> String.trim
   end
 

mix.exs

@@ -39,7 +39,9 @@ defmodule Hedwig.Mixfile do
 
   defp deps do
     [{:excoveralls, "~> 0.7.2", only: :test},
-     {:ex_doc, "~> 0.16.3", only: :dev}]
+     {:ex_doc, "~> 0.16.3", only: :dev},
+     {:credo, "~> 0.8", only: [:dev, :test], runtime: false}
+    ]
   end
 
   defp elixirc_paths(:test), do: ["lib", "test/support"]

mix.lock

@@ -1,4 +1,6 @@
-%{"certifi": {:hex, :certifi, "2.0.0", "a0c0e475107135f76b8c1d5bc7efb33cd3815cb3cf3dea7aefdd174dabead064", [:rebar3], [], "hexpm"},
+%{"bunt": {:hex, :bunt, "0.2.0", "951c6e801e8b1d2cbe58ebbd3e616a869061ddadcc4863d0a2182541acae9a38", [], [], "hexpm"},
+  "certifi": {:hex, :certifi, "2.0.0", "a0c0e475107135f76b8c1d5bc7efb33cd3815cb3cf3dea7aefdd174dabead064", [:rebar3], [], "hexpm"},
+  "credo": {:hex, :credo, "0.8.10", "261862bb7363247762e1063713bb85df2bbd84af8d8610d1272cd9c1943bba63", [], [{:bunt, "~> 0.2.0", [hex: :bunt, repo: "hexpm", optional: false]}], "hexpm"},
   "earmark": {:hex, :earmark, "1.2.3", "206eb2e2ac1a794aa5256f3982de7a76bf4579ff91cb28d0e17ea2c9491e46a4", [:mix], [], "hexpm"},
   "ex_doc": {:hex, :ex_doc, "0.16.3", "cd2a4cfe5d26e37502d3ec776702c72efa1adfa24ed9ce723bb565f4c30bd31a", [:mix], [{:earmark, "~> 1.1", [hex: :earmark, repo: "hexpm", optional: false]}], "hexpm"},
   "excoveralls": {:hex, :excoveralls, "0.7.2", "f69ede8c122ccd3b60afc775348a53fc8c39fe4278aee2f538f0d81cc5e7ff3a", [:mix], [{:exjsx, ">= 3.0.0", [hex: :exjsx, repo: "hexpm", optional: false]}, {:hackney, ">= 0.12.0", [hex: :hackney, repo: "hexpm", optional: false]}], "hexpm"},