Added to support BUNDLE_RUBY and BUNDLE_GEM environmental variables.

  They are replaced build binary on ruby core repository.

1 files changed, 7 insertions, 3 deletions

diff --git a/lib/bundler/shared_helpers.rb b/lib/bundler/shared_helpers.rb
index 28699dc61f..9d5684aeaf 100644
--- a/lib/bundler/shared_helpers.rb
+++ b/lib/bundler/shared_helpers.rb
@@ -274,9 +274,13 @@ module Bundler
 
       until !File.directory?(current) || current == previous
         if ENV["BUNDLE_SPEC_RUN"]
-          gemspec = File.join(current, "bundler.gemspec")
-          # for Ruby Core
-          gemspec = File.join(current, "lib/bundler.gemspec") unless File.file?(gemspec)
+          # avoid stepping above the tmp directory when testing
+          if !!(ENV["BUNDLE_RUBY"] && ENV["BUNDLE_GEM"])
+            # for Ruby Core
+            gemspec = "lib/bundler.gemspec"
+          else
+            gemspec = "bundler.gemspec"
+          end
 
           # avoid stepping above the tmp directory when testing
           return nil if File.file?(File.join(current, gemspec))