Create Integration tests for bdk-cli

[rajarshimaitra]

After Proof of Reserves capability is merged in bitcoindevkit/bdk@b2ac4a0, its time we require some integration tests in the library. Not only for Proof of Reserves functionality, but in general wallet functions too.

This then can be added into CI tests to give us better reliability on the underlying bdk functions.

electrsd can be used similarly to the bdk test framework to simulate a electrum and bitcoin core backend. https://github.com/bitcoindevkit/bdk/blob/64e88f0e006c68315142d53dc35b633327dde4b5/src/testutils/blockchain_tests.rs#L19-L22

[rajarshimaitra]

This has turned out to be more elaborate than I thought.. Definitely not good first issue.. I will include this in an upcoming regtest-node part2 PR..

[notmandatory]

I'm going to merge #89 and #71 for 0.5.0 and then I think we should release it. Can we move this issue to next milestone 0.6.0?

[rajarshimaitra]

Yes I also feel we should release the current bunch before that change, and push this to next release.. Because that PR will have some upstream pendings..

• electrsd - Waiting for Update node initiation to handle Persistent DB rust-bitcoin/bitcoind#61 and a new electrsd release.

• bdk v0.190 (maybe?) - To include bitcoincore-rpc v0.15.0 which is dependency of latest electrsd . Which I saw Alekos already did in the taproot PR. Without that the code will have compile time conflict because it uses bitcoincore-rpc from two different crates.. bdk v0.18.0 will have dependency version conflict in that PR. We can probably work around it in cargo with patches until bitcoincore-rpc v0.15.0 gets into bdk in next release.

I will open the PR shortly though with those temporary fixes, so we can discuss over the node communication approach and improving the test framework..