* lib/fileutils.rb: fix behavior when mkdir/mkdir_p accepted "/".

* test/fileutils/test_fileutils.rb: add test for above change.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@41047 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 6 insertions, 0 deletions

diff --git a/test/fileutils/test_fileutils.rb b/test/fileutils/test_fileutils.rb
index 54742d1d18..b03c9ba2be 100644
--- a/test/fileutils/test_fileutils.rb
+++ b/test/fileutils/test_fileutils.rb
@@ -758,6 +758,10 @@ class TestFileUtils
     assert_directory 'tmp/tmp'
     assert_equal 0700, (File.stat('tmp/tmp').mode & 0777) if have_file_perm?
     Dir.rmdir 'tmp/tmp'
+
+    assert_raise(Errno::EISDIR) {
+      mkdir '/'
+    }
   end
 
   def test_mkdir_file_perm
@@ -831,6 +835,8 @@ class TestFileUtils
     # (rm(1) try to chdir to parent directory, it fails to remove directory.)
     Dir.rmdir 'tmp/tmp'
     Dir.rmdir 'tmp'
+
+    mkdir_p '/'
   end
 
   def test_mkdir_p_file_perm