assert_not_deprecated

# File activesupport/lib/active_support/testing/deprecation.rb, line 19
      def assert_not_deprecated(deprecator = nil, &block)
        result, deprecations = collect_deprecations(deprecator, &block)
        assert deprecations.empty?, "Expected no deprecation warning within the block but received #{deprecations.size}: \n  #{deprecations * "\n  "}"
        result
      end