add version function to Scenic

Author: boydm

CHANGELOG.md

@@ -14,6 +14,7 @@
 * Rename Cache.request_notification/1 -> Cache.subscribe/1
 * Rename Cache.stop_notification/1 -> Cache.unsubscribe/1
 * General cleanup of Scenic.Cache.Hash. Some functions removed. Some function signatures changed.
+* Add Scenic.version function. Returns current version of Scenic.
 
 ## 0.8.0
 

lib/scenic.ex

@@ -38,6 +38,14 @@ defmodule Scenic do
 
   @viewports :scenic_dyn_viewports
 
+  @version    Mix.Project.config()[:version]
+
+
+  @doc """
+  Return the current version of scenic
+  """
+  def version(), do: @version
+
   # --------------------------------------------------------
   @doc false
   def child_spec(opts) do

test/scenic_test.exs

@@ -1,4 +1,19 @@
 defmodule ScenicTest do
   use ExUnit.Case
   doctest Scenic
+
+  test "version works" do
+    assert Scenic.version == Mix.Project.config()[:version]
+  end
+
+  test "child_spec" do
+   assert Scenic.child_spec(:opts) == %{
+      id: Scenic,
+      start: {Scenic, :start_link, [:opts]},
+      type: :supervisor,
+      restart: :permanent,
+      shutdown: 500
+    }
+  end
+
 end