From 707677de8c0ece6a47bd2f9887f4ae5cfd49447c Mon Sep 17 00:00:00 2001
From: kballou <kballou@devnulllabs.io>
Date: Tue, 26 Jul 2016 10:44:05 -0600
Subject: Add dialyzer static analysis

*   Add `:dialyxir` to project

*   Customize travis-ci script for automatically running dialyzer
---
 .travis.yml | 4 ++++
 mix.exs     | 4 +++-
 mix.lock    | 3 ++-
 3 files changed, 9 insertions(+), 2 deletions(-)

diff --git a/.travis.yml b/.travis.yml
index a875a2a..b2631e8 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -5,3 +5,7 @@ elixir:
 otp_release:
   - 18.3
   - 19.0
+
+script:
+  - MIX_ENV=dev mix do deps.get, dialyzer.plt, dialyzer
+  - MIX_ENV=test mix do deps.get, test
diff --git a/mix.exs b/mix.exs
index 6348d98..720560b 100644
--- a/mix.exs
+++ b/mix.exs
@@ -10,6 +10,7 @@ defmodule ExPrometheusIo.Mixfile do
      elixirc_paths: elixirc_paths(Mix.env),
      build_embedded: Mix.env == :prod,
      start_permanent: Mix.env == :prod,
+     dialyzer: [plt_add_apps: [:inets], plt_add_deps: :transitive],
      deps: deps]
   end
 
@@ -20,7 +21,8 @@ defmodule ExPrometheusIo.Mixfile do
 
   defp deps do
     [{:poison, "~> 2.2 or ~> 1.5"},
-     {:ex_doc, "~> 0.13.0", only: :dev}]
+     {:ex_doc, "~> 0.13.0", only: :dev},
+     {:dialyxir, "~> 0.3.5", only: :dev}]
   end
 
   defp elixirc_paths(:test), do: ["lib", "test/support"]
diff --git a/mix.lock b/mix.lock
index 1de9165..b785bff 100644
--- a/mix.lock
+++ b/mix.lock
@@ -1,3 +1,4 @@
 %{"earmark": {:hex, :earmark, "1.0.1", "2c2cd903bfdc3de3f189bd9a8d4569a075b88a8981ded9a0d95672f6e2b63141", [:mix], []},
   "ex_doc": {:hex, :ex_doc, "0.13.0", "aa2f8fe4c6136a2f7cfc0a7e06805f82530e91df00e2bff4b4362002b43ada65", [:mix], [{:earmark, "~> 1.0", [hex: :earmark, optional: false]}]},
-  "poison": {:hex, :poison, "2.2.0", "4763b69a8a77bd77d26f477d196428b741261a761257ff1cf92753a0d4d24a63", [:mix], []}}
+  "poison": {:hex, :poison, "2.2.0", "4763b69a8a77bd77d26f477d196428b741261a761257ff1cf92753a0d4d24a63", [:mix], []},
+  "dialyxir": {:hex, :dialyxir, "0.3.5", "eaba092549e044c76f83165978979f60110dc58dd5b92fd952bf2312f64e9b14", [:mix], []}}
-- 
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