Should I manually verify the image it is supposed to create, then take a hash of that image and compare the hash from the same process during testing?

Sounds good to me.

If I do it this way, I will need to use a hashing module and I'm reluctant to create a dependency that is only used in the tests.

Digest::MD5 is a core module and has been since 5.7.3. You should have no qualms about relying on that one being present. Still declare it as a test dependency just in case for the 5.6.0 hold-outs.

🦛

In reply to Re: Testing image output by hippo
in thread Testing image output by Bod

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