1 files changed, 6 insertions, 2 deletions
diff --git a/Library/Formula/gnu-tar.rb b/Library/Formula/gnu-tar.rb
index a224d4f5b..86a2b18f7 100644
--- a/Library/Formula/gnu-tar.rb
+++ b/Library/Formula/gnu-tar.rb
@@ -1,5 +1,3 @@
-require "formula"
-
 class GnuTar < Formula
   homepage "http://www.gnu.org/software/tar/"
   url "http://ftpmirror.gnu.org/tar/tar-1.28.tar.gz"
@@ -44,4 +42,10 @@ class GnuTar < Formula
       EOS
     end
   end
+
+  test do
+    (testpath/"test").write("test")
+    system "#{bin}/gtar", "-czvf", "test.tar.gz", "test"
+    assert_match /test/, shell_output("#{bin}/gtar -xOzf test.tar.gz")
+  end
 end