1 files changed, 10 insertions, 0 deletions
diff --git a/spec/ruby/core/set/set_spec.rb b/spec/ruby/core/set/set_spec.rb
new file mode 100644
index 0000000000..fd1d2072e3
--- /dev/null
+++ b/spec/ruby/core/set/set_spec.rb
@@ -0,0 +1,10 @@
+require_relative '../../spec_helper'
+
+describe 'Set' do
+  it 'is available without explicit requiring' do
+    output = ruby_exe(<<~RUBY, options: '--disable-gems', args: '2>&1')
+      puts Set.new([1, 2, 3]).to_a.inspect
+    RUBY
+    output.chomp.should == "[1, 2, 3]"
+  end
+end