Dear colleagues, Let me draw your attention to a potentially reasonable set of extended tests for the openssl engines.
The gost-engine project (https://github.com/gost-engine/engine) has some test scenarios robust enough for testing engine-provided algorithms and some basic RSA regression tests. It contains a rather eclectic set of C, Perl, and TCL(!) tests that are used by me on a regular basis. If these tests are included in the project extended test suite, they could reduce some regression that sometimes occurs (see https://github.com/gost-engine/engine/issues/232 as a current list of known problems). I will be happy to assist in enabling these tests as a part of openssl test suites. Many thanks! -- SY, Dmitry Belyavsky