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-rw-r--r--activesupport/test/core_ext/duplicable_test.rb2
1 files changed, 1 insertions, 1 deletions
diff --git a/activesupport/test/core_ext/duplicable_test.rb b/activesupport/test/core_ext/duplicable_test.rb
index 0ed81fa8e1..3e54266051 100644
--- a/activesupport/test/core_ext/duplicable_test.rb
+++ b/activesupport/test/core_ext/duplicable_test.rb
@@ -22,7 +22,7 @@ class DuplicableTest < ActiveSupport::TestCase
end
RAISE_DUP.each do |v|
- assert_raises(TypeError) do
+ assert_raises(TypeError, v.class.name) do
v.dup
end
end