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304febd7 - updated error message and added test (#169685)

updated error message and added test (#169685) Summary: Fixes #161831 X-link: https://github.com/pytorch/pytorch/pull/169685 Approved by: https://github.com/Lucaskabela, https://github.com/mlazos, https://github.com/pianpwk Reviewed By: izaitsevfb Differential Revision: D88867214 fbshipit-source-id: e4bdc81f8b7e7fd4ff159385dbaa6e0fad493497