assert_nothing_thrown

# File lib/test/unit/assertions.rb, line 421
      def assert_nothing_thrown(message="", &proc)
        _wrap_assertion do
          assert(block_given?, "Should have passed a block to assert_nothing_thrown")
          begin
            proc.call
          rescue NameError, ThreadError => error
            if UncaughtThrow[error.class] !~ error.message
              raise error
            end
            full_message = build_message(message, "<?> was thrown when nothing was expected", $1.intern)
            flunk(full_message)
          end
          assert(true, "Expected nothing to be thrown")
        end
      end