Implement Set#clone. [Fixes GH-661]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@47083 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 22 insertions, 0 deletions

diff --git a/test/test_set.rb b/test/test_set.rb
index 559bc12897..169136f0d9 100644
--- a/test/test_set.rb
+++ b/test/test_set.rb
@@ -585,6 +585,28 @@ class TC_Set < Test::Unit::TestCase
     assert_equal 4, set.size
   end
 
+  def test_freeze_dup
+    set1 = Set[1,2,3]
+    set1.freeze
+    set2 = set1.dup
+
+    assert_not_predicate set2, :frozen?
+    assert_nothing_raised {
+      set2.add 4
+    }
+  end
+
+  def test_freeze_clone
+    set1 = Set[1,2,3]
+    set1.freeze
+    set2 = set1.clone
+
+    assert_predicate set2, :frozen?
+    assert_raise(RuntimeError) {
+      set2.add 5
+    }
+  end
+
   def test_inspect
     set1 = Set[1]