feat(testenv): Add method new_with_config

[ValuedMammal]

I think this will be useful for passing a custom bitcoin config including e.g. -blockfilterindex that would not otherwise be included in the default config.

Notes to the reviewers

Any other suggestions let me know @LagginTimes

Changelog notice

• Added method TestEnv::new_with_config for passing custom bitcoind::Conf, electrsd::Conf config objects

Checklists

All Submissions:

• I've signed all my commits
• I followed the contribution guidelines
• I ran cargo fmt and cargo clippy before committing

[ValuedMammal]

I'm curious about the intention to enable http on default. Is it because electrsd requires it?

I tried turning it off, and running

cargo t -p bdk_esplora --all-features -- --test-threads=1

gave this error

running 3 tests
test async_ext::test::test_finalize_chain_update ... FAILED
test blocking_ext::test::test_finalize_chain_update ... FAILED
test blocking_ext::test::update_local_chain ... ok

failures:

---- async_ext::test::test_finalize_chain_update stdout ----
[0] running test case: chain_extends
thread 'async_ext::test::test_finalize_chain_update' panicked at crates/esplora/src/async_ext.rs:469:83:
called `Option::unwrap()` on a `None` value
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace

---- blocking_ext::test::test_finalize_chain_update stdout ----
[0] running test case: chain_extends
thread 'blocking_ext::test::test_finalize_chain_update' panicked at crates/esplora/src/blocking_ext.rs:466:83:
called `Option::unwrap()` on a `None` value

[LagginTimes]

ACK b3b6551

[evanlinjin]

ACK b3b6551