1 files changed, 7 insertions, 4 deletions
diff --git a/Library/Formula/cloog.rb b/Library/Formula/cloog.rb
index 7b094daac..13329b1b5 100644
--- a/Library/Formula/cloog.rb
+++ b/Library/Formula/cloog.rb
@@ -16,7 +16,7 @@ class Cloog < Formula
     system "make install"
   end
 
-  def test
+  test do
     cloog_source = <<-EOS.undent
       c
 
@@ -33,8 +33,11 @@ class Cloog < Formula
       0
     EOS
 
-    pipe = IO.popen("cloog /dev/stdin", "w+")
-    pipe.write(cloog_source)
-    pipe.read =~ /Generated\ from \/dev\/stdin\ by\ CLooG/
+    require 'open3'
+    Open3.popen3("#{bin}/cloog", "/dev/stdin") do |stdin, stdout, _|
+      stdin.write(cloog_source)
+      stdin.close
+      /Generated from \/dev\/stdin by CLooG/ === stdout.read
+    end
   end
 end