diff --git a/Library/Formula/apktool.rb b/Library/Formula/apktool.rb
index 230495004e6a..3e231a026861 100644
--- a/Library/Formula/apktool.rb
+++ b/Library/Formula/apktool.rb
@@ -1,12 +1,22 @@
-require 'formula'
-
 class Apktool < Formula
-  homepage 'https://github.com/iBotPeaches/Apktool'
-  url 'https://bitbucket.org/iBotPeaches/apktool/downloads/apktool_2.0.0.jar', :using => :nounzip
-  sha1 '577e351e5b06986c7e099ec33944934f3b9e31e1'
+  homepage "https://github.com/iBotPeaches/Apktool"
+  url "https://bitbucket.org/iBotPeaches/apktool/downloads/apktool_2.0.0.jar", :using => :nounzip
+  sha256 "0dd25996d8e23d8efcca0872dab6498af6f97c5e6cdef10005f5d82a7636f57d"
+
+  resource "sample.apk" do
+    url "https://github.com/downloads/stephanenicolas/RoboDemo/robodemo-sample-1.0.1.apk", :using => :nounzip
+    sha256 "bf3ec04631339538c8edb97ebbd5262c3962c5873a2df9022385156c775eb81f"
+  end
 
   def install
     libexec.install "apktool_#{version}.jar"
-    bin.write_jar_script libexec/"apktool_#{version}.jar", 'apktool'
+    bin.write_jar_script libexec/"apktool_#{version}.jar", "apktool"
+  end
+
+  test do
+    resource("sample.apk").stage do
+      system "#{bin}/apktool", "d", "robodemo-sample-1.0.1.apk"
+      system "#{bin}/apktool", "b", "robodemo-sample-1.0.1"
+    end
   end
 end