1 files changed, 11 insertions, 0 deletions
diff --git a/test/objspace/test_objspace.rb b/test/objspace/test_objspace.rb
index 3036b879bb..2acc35469f 100644
--- a/test/objspace/test_objspace.rb
+++ b/test/objspace/test_objspace.rb
@@ -351,4 +351,15 @@ class TestObjSpace < Test::Unit::TestCase
     }
     assert_operator i, :>, 0
   end
+
+  def test_count_symbols
+    syms = (1..128).map{|i| ("xyzzy#{i}" * 128).to_sym}
+    c = Class.new{define_method(syms[-1]){}}
+
+    h = ObjectSpace.count_symbols
+    assert_operator h[:mortal_dynamic_symbol],   :>=, 128, h.inspect
+    assert_operator h[:immortal_dynamic_symbol], :>=, 1, h.inspect
+    assert_operator h[:immortal_static_symbol],  :>=, Object.methods.size, h.inspect
+    assert_equal h[:immortal_symbol], h[:immortal_dynamic_symbol] + h[:immortal_static_symbol], h.inspect
+  end
 end