1 files changed, 6 insertions, 0 deletions
diff --git a/Library/Formula/ruby.rb b/Library/Formula/ruby.rb
index 045c1732e..e544320a3 100644
--- a/Library/Formula/ruby.rb
+++ b/Library/Formula/ruby.rb
@@ -78,6 +78,12 @@ class Ruby < Formula
     to restore binstubs for installed gems.
     EOS
   end
+
+  test do
+    output = `#{bin}/ruby -e 'puts "hello"'`
+    assert_equal "hello\n", output
+    assert_equal 0, $?.exitstatus
+  end
 end
 
 __END__