1 files changed, 6 insertions, 0 deletions
diff --git a/Library/Formula/renameutils.rb b/Library/Formula/renameutils.rb
index 526cd2e5b..e7f5e35c8 100644
--- a/Library/Formula/renameutils.rb
+++ b/Library/Formula/renameutils.rb
@@ -22,6 +22,12 @@ class Renameutils < Formula
     ENV.deparallelize # parallel install fails
     system "make", "install"
   end
+
+  test do
+    (testpath/"test.txt").write ("Hello World!")
+    pipe_output("#{bin}/icp test.txt", ".2\n")
+    assert_equal File.read("test.txt"), File.read("test.txt.2")
+  end
 end
 
 __END__