1 files changed, 64 insertions, 0 deletions
diff --git a/trunk/test/ruby/test_alias.rb b/trunk/test/ruby/test_alias.rb
new file mode 100644
index 0000000000..d72fe702af
--- /dev/null
+++ b/trunk/test/ruby/test_alias.rb
@@ -0,0 +1,64 @@
+require 'test/unit'
+
+class TestAlias < Test::Unit::TestCase
+  class Alias0
+    def foo
+      "foo"
+    end
+  end
+
+  class Alias1 < Alias0
+    alias bar foo
+
+    def foo
+      "foo+#{super}"
+    end
+  end
+
+  class Alias2 < Alias1
+    alias baz foo
+    undef foo
+  end
+
+  class Alias3 < Alias2
+    def foo
+      super
+    end
+
+    def bar
+      super
+    end
+
+    def quux
+      super
+    end
+  end
+
+  def test_alias
+    x = Alias2.new
+    assert_equal "foo", x.bar
+    assert_equal "foo+foo", x.baz
+    assert_equal "foo+foo", x.baz   # test_check for cache
+
+    x = Alias3.new
+    assert_raise(NoMethodError) { x.foo }
+    assert_equal "foo", x.bar
+    assert_raise(NoMethodError) { x.quux }
+  end
+   
+  class C
+    def m
+      $SAFE
+    end
+  end
+
+  def test_JVN_83768862
+    d = lambda {
+      $SAFE = 4
+      dclass = Class.new(C)
+      dclass.send(:alias_method, :mm, :m)
+      dclass.new
+    }.call
+    assert_raise(SecurityError) { d.mm }
+  end
+end