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-rw-r--r--test/rubygems/test_gem.rb4
1 files changed, 4 insertions, 0 deletions
diff --git a/test/rubygems/test_gem.rb b/test/rubygems/test_gem.rb
index 110eef6c7f..23f8249e34 100644
--- a/test/rubygems/test_gem.rb
+++ b/test/rubygems/test_gem.rb
@@ -7,6 +7,10 @@ require 'pathname'
require 'tmpdir'
require 'rbconfig'
+if File.exist?(File.join(Dir.tmpdir, "Gemfile"))
+ raise "rubygems/bundler tests do not work correctly if there is #{ File.join(Dir.tmpdir, "Gemfile") }"
+end
+
# TODO: push this up to test_case.rb once battle tested
$LOAD_PATH.map! do |path|