2 files changed, 1 insertions, 20 deletions
diff --git a/activesupport/lib/active_support/testing/deprecation.rb b/activesupport/lib/active_support/testing/deprecation.rb
index 0135185a47..a8342904dc 100644
--- a/activesupport/lib/active_support/testing/deprecation.rb
+++ b/activesupport/lib/active_support/testing/deprecation.rb
@@ -34,22 +34,3 @@ module ActiveSupport
     end
   end
 end
-
-begin
-  require 'test/unit/error'
-rescue LoadError
-  # Using miniunit, ignore.
-else
-  module Test
-    module Unit
-      class Error #:nodoc:
-        # Silence warnings when reporting test errors.
-        def message_with_silenced_deprecation
-          ActiveSupport::Deprecation.silence { message_without_silenced_deprecation }
-        end
-        alias_method :message_without_silenced_deprecation, :message
-        alias_method :message, :message_with_silenced_deprecation
-      end
-    end
-  end
-end
diff --git a/activesupport/test/deprecation_test.rb b/activesupport/test/deprecation_test.rb
index 4daffb85d2..e821a285d7 100644
--- a/activesupport/test/deprecation_test.rb
+++ b/activesupport/test/deprecation_test.rb
@@ -120,7 +120,7 @@ class DeprecationTest < ActiveSupport::TestCase
       ActiveSupport::Deprecation.warn 'abc'
       ActiveSupport::Deprecation.warn 'def'
     end
-  rescue Test::Unit::AssertionFailedError
+  rescue MiniTest::Assertion
     flunk 'assert_deprecated should match any warning in block, not just the last one'
   end