1 files changed, 2 insertions, 5 deletions
diff --git a/Library/Formula/csvprintf.rb b/Library/Formula/csvprintf.rb
index 930deeeb0..e04088675 100644
--- a/Library/Formula/csvprintf.rb
+++ b/Library/Formula/csvprintf.rb
@@ -13,10 +13,7 @@ class Csvprintf < Formula
   end
 
   test do
-    IO.popen("#{bin}/csvprintf -i '%2$s %1$s\n'", "w+") do |pipe|
-      pipe.write "Last,First\nSmith,Fred\n"
-      pipe.close_write
-      assert_equal "Fred Smith\n", pipe.read
-    end
+    assert_equal "Fred Smith\n",
+                 pipe_output("#{bin}/csvprintf -i '%2$s %1$s\n'", "Last,First\nSmith,Fred\n")
   end
 end