Added test for client.GetChainTxStatsAsync() in rpcclient.

[ClaytonNorthey92]

Added test for client.GetChainTxStatsAsync() in rpcclient. This sets up a test websocket server to run the tests. Also, ensure these are run within a timeout, since they rely on concurrency.

Similar to this other pull request, these changes increase the code coverage for rpcclient tests to 5.3%

go-acc ./rpcclient/
ok  	github.com/btcsuite/btcd/rpcclient	0.255s	coverage: 5.3% of statements in ./rpcclient/

[jcvernaleo]

Love the addition of a test but looks like the actions are failing.

Could you fix those please?

[ClaytonNorthey92]

Hey @jcvernaleo , my apologies, I had forgotten to add the websocket module to btcutil/go.sum, resulting in errors from btcutil in the pipeline.

errors found here and here both result from that not being found in the go.sum file.

I have run both make unit-race and make unit-cover locally with this fix, they both work. I think this is good to re-run the pipelines 🤞

[coveralls]

Pull Request Test Coverage Report for Build 6725208065

• 0 of 0 changed or added relevant lines in 0 files are covered.
• 10 unchanged lines in 2 files lost coverage.
• Overall coverage increased (+0.6%) to 55.933%

---

Files with Coverage Reduction	New Missed Lines	%
connmgr/connmanager.go	1	86.27%
peer/peer.go	9	73.49%

Totals
Change from base Build 6724971003:	0.6%
Covered Lines:	27254
Relevant Lines:	48726

---

💛 - Coveralls

[jcvernaleo]

OK

Code looks good but there is a conflict after the previous PR went in. If you could fix conflict, I'll approve and merge.

Sorry about that!

[ClaytonNorthey92]

Hey @jcvernaleo , I just rebased and pushed, everything should be up-to-date now 👍 thanks!

[jcvernaleo]

OK