[rubygems/rubygems] Fix symlink RubyGems test problems for non-admin user.

https://github.com/rubygems/rubygems/commit/75f672ff0e

1 files changed, 17 insertions, 0 deletions

diff --git a/lib/rubygems/installer_test_case.rb b/lib/rubygems/installer_test_case.rb
index 5a3ce75c26..68200d7204 100644
--- a/lib/rubygems/installer_test_case.rb
+++ b/lib/rubygems/installer_test_case.rb
@@ -230,4 +230,21 @@ class Gem::InstallerTestCase < Gem::TestCase
                        :user_install => user)
   end
 
+  @@symlink_supported = nil
+
+  # This is needed for Windows environment without symlink support enabled (the default
+  # for non admin) to be able to skip test for features using symlinks.
+  def symlink_supported?
+    if @@symlink_supported.nil?
+      begin
+        File.symlink("", "")
+      rescue Errno::ENOENT, Errno::EEXIST
+        @@symlink_supported = true
+      rescue NotImplementedError, SystemCallError
+        @@symlink_supported = false
+      end
+    end
+    @@symlink_supported
+  end
+
 end