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-rw-r--r--test/ruby/test_object.rb3
1 files changed, 3 insertions, 0 deletions
diff --git a/test/ruby/test_object.rb b/test/ruby/test_object.rb
index 585795ba38..8efbf82646 100644
--- a/test/ruby/test_object.rb
+++ b/test/ruby/test_object.rb
@@ -63,6 +63,9 @@ class TestObject < Test::Unit::TestCase
1.freeze
assert_equal(true, 1.frozen?)
assert_equal(true, 2.frozen?)
+ assert_equal(true, true.frozen?)
+ assert_equal(true, false.frozen?)
+ assert_equal(true, nil.frozen?)
end
def test_nil_to_f