add description of test in comment

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@41089 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2013-06-05 11:53:02 +00:00 · 2013-06-05 11:53:02 +00:00 · 4a97761c1a
commit 4a97761c1a
parent 27e92c6649
1 changed files with 3 additions and 0 deletions
--- a/test/fileutils/test_fileutils.rb
+++ b/test/fileutils/test_fileutils.rb
@ -1227,6 +1227,9 @@ class TestFileUtils
      Dir.rmdir '/'
    rescue => e
      assert_raise(e.class) {
+        # Dir.rmdir('') raises Errno::ENOENT.
+        # FileUtils#rmdir ignores it.
+        # And this test failed as expected.
        rmdir '/'
      }
    end