https://bugs.gentoo.org/978788

--- a/test/data_test.rb
+++ b/test/data_test.rb
@@ -121,10 +121,10 @@ describe GPGME::Data do
 
     it "can set file_name" do
       data = GPGME::Data.new("wadus")
-      [ "foo.bar", nil ].each do |file_name|
-        data.file_name = file_name
-        assert_equal file_name, data.file_name
-      end
+      data.file_name = "foo.bar"
+      assert_equal "foo.bar", data.file_name
+      data.file_name = nil
+      assert_nil data.file_name
     end
   end