1 files changed, 17 insertions, 0 deletions
diff --git a/test/ostruct/test_ostruct.rb b/test/ostruct/test_ostruct.rb
index 8b0424d2d8..02c4c74152 100644
--- a/test/ostruct/test_ostruct.rb
+++ b/test/ostruct/test_ostruct.rb
@@ -164,4 +164,21 @@ class TC_OpenStruct < Test::Unit::TestCase
     e = assert_raise(ArgumentError) { os.send :foo=, true, true }
     assert_match(/#{__callee__}/, e.backtrace[0])
   end
+
+  def test_accessor_defines_method
+    os = OpenStruct.new(foo: 42)
+    assert os.respond_to? :foo
+    assert_equal([], os.singleton_methods)
+    assert_equal(42, os.foo)
+    assert_equal([:foo, :foo=], os.singleton_methods)
+  end
+
+  def test_does_not_redefine
+    os = OpenStruct.new(foo: 42)
+    def os.foo
+      43
+    end
+    os.foo = 44
+    assert_equal(43, os.foo)
+  end
 end