assert_not_deprecated(&block) public

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# File activesupport/lib/active_support/testing/deprecation.rb, line 16
      def assert_not_deprecated(&block)
        result, deprecations = collect_deprecations(&block)
        assert deprecations.empty?, "Expected no deprecation warning within the block but received #{deprecations.size}: \n  #{deprecations * "\n  "}"
        result
      end
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