try-runtime-cli integration tests

[liamaharon]

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Motivation

try-runtime has generally low test coverage. follow-chain recently broke for a while without anyone noticing, and there're a few unresolved try-runtime related issues.

Request

(Rephrasing @kianenigma) An integration test to make sure the payload that is built in various try-runtime-cli commands matches the trait def (expected payload). We could: move trait TryRuntime to sp-try-runtime (or keep it where it is). Provide a fake implementation of it, and call into that fake implementation with the payload. Or, a realistic test that actually builds a wasm from substrate-node-template, but I don't know how to do that exactly.

Solution

No response

Are you willing to help with this request?

Yes!

[liamaharon]

duplicate of #13796