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-rw-r--r--test/-ext-/string/test_fstring.rb4
1 files changed, 4 insertions, 0 deletions
diff --git a/test/-ext-/string/test_fstring.rb b/test/-ext-/string/test_fstring.rb
index 5a3456c566..b7416ccbf3 100644
--- a/test/-ext-/string/test_fstring.rb
+++ b/test/-ext-/string/test_fstring.rb
@@ -49,6 +49,10 @@ class Test_String_Fstring < Test::Unit::TestCase
assert_raise(TypeError) {fstr.singleton_class}
end
+ def test_fake_str
+ assert_equal([*"a".."z"].join(""), Bug::String.fstring_fake_str)
+ end
+
class S < String
end