From 3bfea6732b909f6b3d36e4f2b558bb8db490fd8d Mon Sep 17 00:00:00 2001
From: gogotanaka <mail@tanakakazuki.com>
Date: Fri, 9 Jan 2015 17:07:33 -0800
Subject: [PATCH 2/4] Add test for set#power
To: https://bugs.ruby-lang.org/

---
 test/test_set.rb | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/test/test_set.rb b/test/test_set.rb
index 961578b..a9098e9 100644
--- a/test/test_set.rb
+++ b/test/test_set.rb
@@ -570,6 +570,14 @@ class TC_Set < Test::Unit::TestCase
     }
   end

+  def test_power
+    assert_equal(Set[1, 2].power, Set[Set[], Set[1], Set[2], Set[1, 2]])
+    assert_equal(
+      Set[1, 2, 3].power,
+      Set[Set[], Set[1], Set[2], Set[3], Set[1, 2], Set[2, 3], Set[3, 1], Set[1, 2, 3]]
+    )
+  end
+
   def test_taintness
     orig = set = Set[1,2,3]
     assert_equal false, set.tainted?
--
gogotanaka