unar 1.7

Added test

Closes Homebrew/homebrew#21209.

Signed-off-by: Jack Nagel <jacknagel@gmail.com>

Formula/unar.rb

@@ -2,9 +2,9 @@ require 'formula'
 
 class Unar < Formula
   homepage 'http://unarchiver.c3.cx/commandline'
-  url 'http://theunarchiver.googlecode.com/files/unar1.6_src.zip'
-  version '1.6'
-  sha1 '1cee2ea4bd89feff4f84754858b21f3757404d7c'
+  url 'http://theunarchiver.googlecode.com/files/unar1.7_src.zip'
+  version '1.7'
+  sha1 'e34760d3806fbf3f1358485ccadf51bd5c7f81be'
 
   head 'https://code.google.com/p/theunarchiver/' , :using => :hg
 
@@ -30,4 +30,9 @@ class Unar < Formula
       bash_completion.install "unar.bash_completion", "lsar.bash_completion"
     end
   end
+
+  def test
+    system bin/'unar', '--version'
+    system bin/'lsar', '--version'
+  end
 end