Add tests for `not_null_ic<>`

gsl-lite / gsl-lite

gsl-lite – A single-file header-only version of ISO C++ Guidelines Support Library (GSL) for C++98, C++11, and later

MIT License

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Add tests for `not_null_ic<>` #327

Open mbeutel opened 2 years ago

mbeutel commented 2 years ago

We have a lot of tests for not_null<> but no test coverage for not_null_ic<>, which seems like an afterthought. We really should add some tests, otherwise people will keep running into embarassing basic issues as in #326.