Expose some internal types, so custom operators can be built about go-testdeep

[maxatome]

Hi, thanks for your interest.

The td.TestDeep interface is, at the time of writing, intentionally unimplementable outside go-testdeep repository to allow it to change in the future if needed. Note that it does not change often, but it has 2 months ago, for last updates of JSON operators for example. See it as a security measure to evolve easily, and to not be an end in itself. If we think the interface is stable, I am not against making it implementable.

If you need to add special use cases, or simili-operators, you can abuse of Smuggle operator (note you can use a function with an interface{} parameter) or combine several operators in one function returning the final one (named combo-operator) like it is explained in the FAQ. I work on making the operator Location settable for combo-operators makers, stay tuned.

By the way, if you think a use case is so common that it deserves its own operator, and no existing operator can compete, we can discuss about its addition in td package.

Do you have a use case in mind that Smuggle operator cannot address?