Ava Chow 4ecf473c36 Merge bitcoin/bitcoin#34727: test: Add IPC wake-up test and reuse mining context ...

ad75b147b5 test: scale IPC mining wait timeouts by timeout_factor (Enoch Azariah)
e7a918b69a test: verify IPC error handling for invalid coinbase (Enoch Azariah)
63684d6922 test: move make_mining_ctx to ipc_util.py (Enoch Azariah)
4ada575d6c test: verify createNewBlock wakes promptly when tip advances (Enoch Azariah)

Pull request description:

  This is a follow-up to implement a couple of test improvements discussed in recent IPC PRs and issues.

  - adds a test to `interface_ipc_mining.py` to verify that `createNewBlock` wakes up immediately when the tip advances, rather than waiting for the cooldown timer to expire (https://github.com/bitcoin/bitcoin/pull/34184#discussion_r2842239399).
  - moves `make_mining_ctx` into `ipc_util.py` so it can be reused across the IPC tests instead of duplicating the setup code (https://github.com/bitcoin/bitcoin/pull/34422#discussion_r2852445430).
  - adds a test case to verify that providing an invalid coinbase to `submitSolution` returns a remote exception instead of crashing the node, closing the loop on the issue reported in #33341.
  - scales IPC wait timeouts using the test suite's `timeout_factor` to prevent spurious failures in heavily loaded CI environments, capping extended waits to avoid test runner hangs (bitcoin-core/libmultiprocess#253 (comment)).

  Closes #33341.

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  achow101:
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  sedited:
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Tree-SHA512: 812aa64c03657761f06707e6a15b8b435ab7c75717a6748a919fcbcae317128e18403b0c1bddd4cdad877d286e69db52389633e4012faaa656acc01939091719

2026-03-24 13:34:30 -07:00

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