--- Day changed Mon Oct 19 2020
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15:54 < sanket1729> I think we are close to finalizing miniscript(without tapscript) once we have resource limits PRs in. 
15:54 < sanket1729> One of things that I wanted to do is consensus test miniscripts created by rust-miniscript
15:55 < sanket1729> But the problem is that libbitcoinconsensus only exposes consensus rules and not standardness rules
15:55 < sanket1729> And we want to check miniscript against bitcoin-core standardness policy rules. 
15:57 < sanket1729> So, I think the (only? ) way to do this is via creating transactions and mining them in bitcoin-core regtest. This adds bunch of unnecessary things that I ideally don't want to be doing (creating the entire tx, managing utxos etc).  
15:58 < sipa> i had tests (with the C++ code) that tested standardness for miniscript-signed transactions iirc
15:59 < sanket1729> But I think you had internal access to bitcoin-core VerifyScript function. 
15:59 < sipa> yes     
15:59 < sipa> if that would exist, and be tested, it would be easier to create a set of test vectors and verify that all codebases sign them identically
16:00 < sanket1729> I see, so you recommend testing the c++ versions and use the identical tests for rust-miniscript
16:01 < sipa> having integration tests that create and sign transactions and submit them to a bitcoind instance is something you'd want anyway too, i think
16:02 < sipa> but there are two distinct aspects, i think
16:02 < sipa> 1) wanting to test/validate the miniscript "spec" itself, to make sure that everything we've written in it actually results in standard and valid signatures
16:02 < sanket1729> There are rust bindings for libbitcoinconsensus that have VerifyScript function. But it only has by default the consensus rules, not the standardness one
16:03 < sipa> yeah i mean create full transactions/blocks, and submit them to a regtest bitcoind node
16:03 < sipa> 2) testing specific implementations of miniscript against that standard
16:05 < sipa> (the reason for not exposing standardless via a library is because it's a poor approximation of "will my transactions make it into the chain" - which depends on things like feerates, transaction sizes, mempool limits, dependency/replacement rules, ...)
16:05 < sipa> and those questions can't be answered without access to a real network node
16:06 < sipa> anyway, that's a tangent... i think the first priority should be validation of the miniscript spec itself
16:06 < sanket1729> yeah, makes sense. 
16:06 < sipa> and for that, simpler and more performant approaches exist
16:06 < sanket1729> I will work on the long promised updates for c++ version
16:07 < sipa> \o/     
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