1 files changed, 6 insertions, 0 deletions
diff --git a/Library/Formula/colordiff.rb b/Library/Formula/colordiff.rb
index 990e53af6..b1ee9bda7 100644
--- a/Library/Formula/colordiff.rb
+++ b/Library/Formula/colordiff.rb
@@ -14,6 +14,12 @@ class Colordiff < Formula
                    "MAN_DIR=#{man1}",
                    "install"
   end
+
+  test do
+    cp HOMEBREW_PREFIX+'bin/brew', 'brew1'
+    cp HOMEBREW_PREFIX+'bin/brew', 'brew2'
+    system "#{bin}/colordiff", 'brew1', 'brew2'
+  end
 end
 
 __END__