Also:
* Remove redundant {} from return statement
* Add missing failing c-string test case and "-" and "+" strings
* Add missing failing test cases for non-int32_t integral types
0ab4c3b272 Return false on corrupt tx rather than asserting (Samuel Dobson)
Pull request description:
Takes up #19793
Rather than asserting, we log an error and return CORRUPT so that the user is informed. This type of error isn't critical so it isn't worth `assert`ing.
ACKs for top commit:
achow101:
ACK 0ab4c3b272
laanwj:
Code review ACK 0ab4c3b272
ryanofsky:
Code review ACK 0ab4c3b272. There may be room for more improvements later like better error messages or easier recovery options, but changing from an assert to an error seems like a clear improvement, and this seems to avoid all the pitfalls of the last PR that tried this.
Tree-SHA512: 4a1a412e7c473d176c4e09123b85f390a6b0ea195e78d28ebd50b13814b7852f8225a172511a2efb6affb555b11bd4e667c19eb8c78b060c5444b62f0fae5f7a
18c5b23a0f [test] Test that -blocksonly nodes still serve compact blocks. (Niklas Gögge)
a79ad65fc2 [test] Test that getdata(CMPCT) is still sent on regular low bandwidth connections. (Niklas Gögge)
5e231c116b [test] Test that -blocksonly nodes do not send getdata(CMPCT) on a low bandwidth connection. (Niklas Gögge)
5bf6587457 [test] Test that -blocksonly nodes do not request high bandwidth mode. (Niklas Gögge)
0dc8bf5b92 [net processing] Dont request compact blocks in blocks-only mode (Niklas Gögge)
Pull request description:
A blocks-only node does not participate in transaction relay to reduce its own bandwidth usage and therefore does not have a mempool. The use of compact blocks is not beneficial to such a node since it will always have to download full blocks.
In both high- and low-bandwidth relaying the `cmpctblock` message is sent. This represent a bandwidth overhead for blocks-only nodes because the `cmpctblock` message is several times larger in the average case than the equivalent `headers` or `inv` announcement.
>**Example:**
>A block with 2000 txs results in a `cmpctblock` with 2000*6 bytes in short ids. This is several times larger than the equivalent 82 bytes for a `headers` message or 37 bytes for an `inv`.
## Approach
This PR makes blocks-only nodes always use the legacy relaying to download new blocks.
It does so by making blocks-only nodes never initiate a high-bandwidth block relay connection by disabling the sending of `sendcmpct(1)`. Additionally a blocks-only node will never request a compact block using `getdata(CMPCT)`.
A blocks-only node will continue to serve compact blocks to its peers in both high- and low-bandwidth mode.
ACKs for top commit:
naumenkogs:
ACK 18c5b23a0f
rajarshimaitra:
tACK 18c5b23a0f
jnewbery:
reACK 18c5b23a0f
theStack:
re-ACK 18c5b23a0f🥛
Tree-SHA512: 0c78804aa397513d41f97fe314efb815efcd852d452dd903df9d4749280cd3faaa010fa9b51d7d5168b8a77e08c8ab0a491ecdbdb3202f2e9cd5137cddc74624
dc3ec74d67 Add rescan removal release note (Samuel Dobson)
bccd1d942d Remove -rescan startup parameter (Samuel Dobson)
f963b0fa8c Corrupt wallet tx shouldn't trigger rescan of all wallets (Samuel Dobson)
6c006495ef Remove outdated dummy wallet -salvagewallet arg (Samuel Dobson)
Pull request description:
Remove the `-rescan` startup parameter.
Rescans can be run with the `rescanblockchain` RPC.
Rescans are still done on wallet-load if needed due to corruption, for example.
ACKs for top commit:
achow101:
ACK dc3ec74d67
laanwj:
re-ACK dc3ec74d67
Tree-SHA512: 608360d0e7d73737fd3ef408b01b33d97a75eebccd70c6d1b47a32fecb99b9105b520b111b225beb10611c09aa840a2b6d2b6e6e54be5d0362829e757289de5c
2fe69efbc6 qt, wallet: Drop no longer used WalletController::getOpenWallets() (Hennadii Stepanov)
f6991cb906 qt, wallet: Add LoadWalletsActivity class (Hennadii Stepanov)
4a024fc310 qt, wallet, refactor: Move connection to QObject::deleteLater to ctor (Hennadii Stepanov)
f9b633eeab qt, wallet: Move activity progress dialog from data member to local (Hennadii Stepanov)
Pull request description:
This PR improves the GUI responsiveness during initial wallets loading at startup (especially ones that have tons of txs), and shows a standard progress dialog for long loading:
Fixes #247.
ACKs for top commit:
ryanofsky:
Code review ACK 2fe69efbc6. Just suggested changes since last review: squashing commits and dropping unused method (thanks!)
shaavan:
reACK 2fe69efbc6
promag:
Code review ACK 2fe69efbc6.
Tree-SHA512: 2ac3cb48886e0005fc36b3fd0c2b35abd557186be16db3145d753c34d94188e4f4ff14dc07fb0fb7558944f84498204a3988f8284fd56c6d85b47bc9081e71a6
4747db8761 util: Introduce ToIntegral<T>(const std::string&) for locale independent parsing using std::from_chars(…) (C++17) (practicalswift)
Pull request description:
Make `Parse{Int,UInt}{32,64}` use locale independent `std::from_chars(…)` (C++17) instead of locale dependent `strto{l,ll,ul,ull}`.
[About `std::from_chars`](https://en.cppreference.com/w/cpp/utility/from_chars): _"Unlike other parsing functions in C++ and C libraries, `std::from_chars` is locale-independent, non-allocating, and non-throwing."_
ACKs for top commit:
laanwj:
Code review ACK 4747db8761
Tree-SHA512: 40f2cd582bc19ddcf2c498eca3379167619eff6aa047bbac2f73b8fd8ecaefe5947c66700a189f83848751f9f8c05645e83afd4a44a1679062aee5440dba880a
4446ef0a54 build: remove support for weak linking getauxval() (fanquake)
e56100c5b4 build: remove arm includes from getauxval() check (fanquake)
Pull request description:
It was [pointed out in #23030](https://github.com/bitcoin/bitcoin/pull/23030#issuecomment-922893367) that we might be able to get rid of our weak linking of [`getauxval()`](https://man7.org/linux/man-pages/man3/getauxval.3.html) (`HAVE_WEAK_GETAUXVAL`) entirely, with only Android being a potential holdout:
> I wonder if it's time to get rid of HAVE_WEAK_GETAUXVAL. I think it's confusing. Either we build against a C library that has this functionality, or not. We don't do this weak linking thing for any other symbols and recently got rid of the other glibc backwards compatibility stuff.
> Unless there is still a current platform that really needs it (Android?), I'd prefer to remove it from the build system, it has caused enough issues.
After looking at Android further, it would seem that given we are moving to using `std::filesystem`, which [requires NDK version 22 and later](https://github.com/android/ndk/wiki/Changelog-r22), and `getauxval` has been available in the since [API version 18](https://developer.android.com/ndk/guides/cpu-features#features_using_libcs_getauxval3), that shouldn't really be an issue. Support for API levels < 19 will be dropped with the NDK 24 release, and according to [one website](https://apilevels.com/), supporting API level 18+ will cover ~99% of devices. Note that in the CI we currently build with NDK version 22 and API level 28.
The other change in this PR is removing the include of headers for ARM intrinsics, from the check for strong `getauxval()` support in configure, as they shouldn't be needed. Including these headers also meant that the check would basically only succeed when building for ARM. This would be an issue if we remove weak linking, as we wouldn't detect `getauxval()` as supported on other platforms. Note that we also use `getauxval()` in our RNG when it's available.
I've checked that with these changes we detect support for strong `getauxval()` on Alpine (muslibc). On Linux, previously we'd be detecting support for weak getauxval(), now we detect strong support. Note that we already require glibc 2.17, and `getauxval()` was introduced in `2.16`.
This is an alternative / supersedes #23030.
ACKs for top commit:
laanwj:
Code review and tested ACK 4446ef0a54
Tree-SHA512: 5f2a9e9cc2d63bddab73f0dcb169d4d6beda74622af82bc0439722f1189f81d052e2fc1eaf27056a7a606320d5ddc4c11075f0d051dd93d77c5e1c15337f354a
1d44513f9b Squashed 'src/crc32c/' changes from b5ef9be675..0d624261ef (MarcoFalke)
Pull request description:
Only change is a warning fix for arm.
```
CXX crc32c/src/crc32c_libcrc32c_a-crc32c.o
In file included from crc32c/src/crc32c.cc:11:0:
crc32c/src/./crc32c_arm64_check.h: In function ‘bool crc32c::CanUseArm64Crc32()’:
crc32c/src/./crc32c_arm64_check.h:43:37: warning: the address of ‘long unsigned int getauxval(long unsigned int)’ will never be NULL [-Waddress]
unsigned long hwcap = (&getauxval != nullptr) ? getauxval(AT_HWCAP) : 0;
~~~~~~~~~~~^~~~~~~~~~
ACKs for top commit:
laanwj:
Code review ACK fac1c13ead
fanquake:
ACK fac1c13ead
Tree-SHA512: 22a52caf67dd89092eff1f075fbf5c5d16bdca9146ba042ce5d3fcc10ce1485e950964089f8536c938ebe650676e03a789d3597fe45b19920fd2c5e72f1391ad
8ff3743f5e Revert "doc: Remove outdated comments" (Hennadii Stepanov)
Pull request description:
Unfortunately, in #23094 the assumption that #14336 makes comments outdated is wrong. As pointed in https://github.com/bitcoin/bitcoin/pull/23094#discussion_r717226839, the #14336 just moved the relevant code a few lines down.
This PR reverts commit ee7891a0c4, and moves the comments into the right place.
I apologize about that.
ACKs for top commit:
MarcoFalke:
cr ACK 8ff3743f5e
laanwj:
ACK 8ff3743f5e
Tree-SHA512: 84aca627bb5b49c06fc172778f9b9407482c5a873ccbc3dc40167e6a8ad0bc60475d6a469c843b7b42712e35cf3fc2d3518923e791d5e0c59628e042acc72747
90be29c5b5 wallet: enable SQLite extended result codes (Sebastian Falbesoner)
Pull request description:
With this change, we get more fine-grained error messages if something goes wrong in the course of communicating with the SQLite database. To pick some random examples, the error codes SQLITE_IOERR_NOMEM, SQLITE_IOERR_CORRUPTFS or SQLITE_IOERR_FSYNC are way more specific than just a plain SQLITE_IOERR, and the corresponding error messages generated by sqlite3_errstr() will hence give a better hint to the user (or also to the developers, if an error report is sent) what the cause for a failure is.
See the SQLite documentation
https://www.sqlite.org/c3ref/extended_result_codes.htmlhttps://www.sqlite.org/c3ref/c_abort_rollback.html
> In its default configuration, SQLite API routines return one of 30 integer result codes. However, experience has shown that many of these result codes are too coarse-grained. They do not provide as much information about problems as programmers might like. In an effort to address this, newer versions of SQLite (version 3.3.8 2006-10-09 and later) include support for additional result codes that provide more detailed information about errors.
ACKs for top commit:
Sjors:
utACK 90be29c
achow101:
ACK 90be29c5b5
laanwj:
Code review ACK 90be29c5b5
Tree-SHA512: 2b7a60860c206f2b5f8ff9d4a7698efdee897c9ad024621b8fd165b841c20746d9780da3cf46aaf448a777e229a5b3cdf3a4792e8ef82cda9c5d46e354a9a598
451ca244db qt, refactor: Drop intermediate BitcoinApplication::shutdownResult slot (Hennadii Stepanov)
f3a17bbe5f qt: Do not exit and re-enter main event loop during shutdown (Hennadii Stepanov)
b4e0d2c431 qt, refactor: Allocate SendConfirmationDialog instances on heap (Hennadii Stepanov)
332dea2852 qt, refactor: Keep HelpMessageDialog in the main event loop (Hennadii Stepanov)
c8bae37a7a qt, refactor: Keep PSBTOperationsDialog in the main event loop (Hennadii Stepanov)
7fa91e8312 qt, refactor: Keep AskPassphraseDialog in the main event loop (Hennadii Stepanov)
6f6fde30e7 qt, refactor: Keep EditAddressDialog in the main event loop (Hennadii Stepanov)
59f7ba4fd7 qt, refactor: Keep CoinControlDialog in the main event loop (Hennadii Stepanov)
7830cd0b35 qt, refactor: Keep OptionsDialog in the main event loop (Hennadii Stepanov)
13f618818d qt: Add GUIUtil::ShowModalDialogAndDeleteOnClose (Hennadii Stepanov)
Pull request description:
On master (1ef34ee25e) during shutdown `QApplication` exits the main event loop, then re-enter again.
This PR streamlines shutdown process by removing the need to interrupt the main event loop, that is required for #59.
Also, blocking [`QDialog::exec()`](https://doc.qt.io/qt-5/qdialog.html#exec) calls are replaced with safer [`QDialog::show()`](https://doc.qt.io/qt-5/qwidget.html#show), except for `SendConfirmationDialog` as that change is not trivial (marked as TODO).
The [`QDialog::open()`](https://doc.qt.io/qt-5/qdialog.html#open) was not used because the actual modality mode (application modal or window modal) of a dialog depends on whether it has a parent.
This PR does not change behavior, and all touched dialogs are still application modal.
As a follow up, a design research could suggest to make some dialogs window modal.
NOTE for reviewers: quitting app while a dialog is open (e.g., via systray icon menu) must work fine.
ACKs for top commit:
laanwj:
Code review and lighly tested ACK 451ca244db
promag:
ACK 451ca244db, just changed signal to `quitRequested`.
Tree-SHA512: ef01ab6ed803b202e776019a4e1f592e816f7bc786e00574b25a0bf16be2374ddf9db21f0a26da08700df7ef0ab9e879550df46dcfe3b6d940f5ed02ca5f8447
10c6929d55 Include vout when copying transaction ID from coin selection (Samuel Dobson)
Pull request description:
Fixes #432
I think it makes sense to just add the vout to the existing function because I can't imagine a situation where a user in the coin selection dialog would want just the transaction ID rather than the specific outpoint, and they can just delete it from the end anyway.
ACKs for top commit:
kristapsk:
ACK 10c6929d55
hebasto:
ACK 10c6929d55, tested on Linux Mint 20.2 (Qt 5.12.8).
shaavan:
ACK 10c6929
Tree-SHA512: df4d132b6c2fd0b590594e91cf54f82c6c0f77ee9ca06296fb726bc3c52b9ae459ca3b50c48b2bf303ccafe832b6b4dba692a812f439991ca6d807ea0d8df934
a11da75411 bloom: cleanup includes (fanquake)
f1ed1d3194 bloom: use constexpr where appropriate (fanquake)
2ba4ddf31d bloom: use Span instead of std::vector for `insert` and `contains` (William Casarin)
Pull request description:
This is #18985 rebased, with the most recent comments addressed.
> We can avoid many unnecessary std::vector allocations by changing
CBloomFilter to take Spans instead of std::vector's for the `insert`
and `contains` operations.
> CBloomFilter currently converts types such as CDataStream and uint256
to std::vector on `insert` and `contains`. This is unnecessary because
CDataStreams and uint256 are already std::vectors internally. We just
need a way to point to the right data within those types. Span gives
us this ability.
ACKs for top commit:
sipa:
Code review ACK a11da75411
laanwj:
Code review ACK a11da75411
Tree-SHA512: ee9ba02c9588daa1ff51782d1953fd060839dd15aa85861b2633b6ff2398320188ddd00f01d0c99442224485364ede9f8322366de4239fc7831ebfa06bd34659
bd5c826a96 gui: add RPC setting (Sjors Provoost)
Pull request description:
RPC access is disabled by default for the GUI.
With the proliferation of third party desktop applications that use the Bitcoin Core RPC (e.g. Specter Desktop, Sparrow and Wasabi), this PR makes them slight easier to configure. It's no longer required to find and edit `bitcoin.conf` to add `server=1` to it.
<img width="447" alt="Schermafbeelding 2021-09-02 om 14 25 58" src="https://user-images.githubusercontent.com/10217/131844201-be3b49a8-ae88-47e6-8992-e95ee6b70f69.png">
ACKs for top commit:
hebasto:
ACK bd5c826a96, tested on Linux Mint 20.2 (Qt 5.12.8):
shaavan:
reACK bd5c826a96
promag:
Code review ACK bd5c826a96. Just minor fixes to the .ui form since last review.
Tree-SHA512: ab377e2358826096b499013bc3a864b7b63dff9859e96041e93ff0897d2319a35e8b3adcfb8df5f83274466c83d040d4ea18c546699421425c835e6f42562ae0
4832737c7d qt: connection type translator comments (Jarol Rodriguez)
Pull request description:
This PR introduces Qt translator comments for `Connection Type` strings in `guiutil.cpp` as well as `rpcconsole.cpp`.
This is an alternate implementation of the idea presented in the last three commits of #289. It is especially inspired by commit 842f4e834dfe5fd2786a5092f78ea28da1b36e4f.
Per [Qt Dev Notes](https://github.com/bitcoin-core/bitcoin-devwiki/wiki/Developer-Notes-for-Qt-Code), it is better to not break up strings when not necessary. This way we preserve the full context for translators.
ACKs for top commit:
jonatack:
Code review re-ACK 4832737c7d per `git diff 371e2b9 4832737`, changes are translator comment edits since my review yesterday (thank you for updating)
hebasto:
ACK 4832737c7d
Tree-SHA512: 67e1741e10a2e30cde6d50d3293eec89f0b7641b34463865dc6909d2926cdcf33a7d8c1dc8055d2f85906ad2002cdaa594d37b184d16e2f06614b6c5ad00c982
We can avoid many unnecessary std::vector allocations by changing
CBloomFilter to take Spans instead of std::vector's for the `insert`
and `contains` operations.
CBloomFilter currently converts types such as CDataStream and uint256
to std::vector on `insert` and `contains`. This is unnecessary because
CDataStreams and uint256 are already std::vectors internally. We just
need a way to point to the right data within those types. Span gives
us this ability.
Signed-off-by: William Casarin <jb55@jb55.com>
fa189621cc doc: Remove un-actionable TODO from chainparams.cpp (MarcoFalke)
Pull request description:
This can't be fixed by writing code, see discussion in https://github.com/bitcoin/bitcoin/pull/23021/files#r717426632
ACKs for top commit:
jarolrod:
ACK fa189621cc
prayank23:
ACK fa189621cc
Tree-SHA512: 3c5c0a0f45d057c9a617797007220837d7dcb29ae5996441e41b3698a67dc3d898f465adc0a958ecef430068cd9c564540bb534bbb3b230a53130ea001629f3e
240ea294d5 doc: update doxygen documention of ComputeTimeSmart() and AddToWalletIfInvolvingMe() regarding rescanning_old_block parameter (BitcoinTsunami)
d6eb39af21 test: add functional test to check transaction time determination during block rescanning (BitcoinTsunami)
07b44f16e7 wallet: fix ComputeTimeSmart algorithm to use blocktime during old block rescanning (BitcoinTsunami)
Pull request description:
The function ComputeTimeSmart in wallet.cpp assume that transaction are discovered in the right order.
Moreover the 'smarttime' determination algorithm is coded with realtime scenario in mind and not rescanning of old block.
The functional test demonstrate that if the user import a wallet, then rescan only recent history, and then rescan the entire history, the older transaction discovered would have an incorrect time determination.
In the context of rescanning old block, the only time value that as a meaning is the blocktime.
That's why I've fixed the problem with a simple separation between rescanning of old block and realtime time determination. The fix is written to have no impact on every realtime scenario and only impact the behaviour during a rescanning process.
This PR Fixes #20181.
To be fair, I don't think that this bug could be triggered with the wallet GUI, because it always proceed with a proper rescan.
But RPC API provide the possibility to trigger it. I've discovered it, because Specter desktop v0.10.0 was impacted. (https://github.com/cryptoadvance/specter-desktop/issues/680).
ACKs for top commit:
jonatack:
ACK 240ea294d5 per `git diff b92d552 240ea29`, re-verified rebase to latest master + debug build clean + new test passes on the branch and fails on master, only change since my review a few hours ago is incorporation of latest review suggestions
meshcollider:
re-utACK 240ea294d5
Tree-SHA512: 514b02e41d011ddfa325f5e8080b93800e1ea4ed5853fa420670a6ac700e8b463000dbea65f8ced8565cfb950c7f51b69154034dcb111e67aca3b964a0061494
ea31caf6b4 update estimatesmartfee rpc to return max of estimateSmartFee, mempoolMinFee and minRelayTxFee. (pranabp-bit)
Pull request description:
This PR is in response to the issue [#19699](https://github.com/bitcoin/bitcoin/issues/19699).
Based on the discussion in the comments of PR [#22673](https://github.com/bitcoin/bitcoin/pull/22673) changes have been made in the `estimatesmartfee` itself such that it takes into account `mempoolMinFee` and `relayMinFee` . Hence it provides a fee estimate that is most likely to be paid by the user in an actual transaction, preventing issues such as [#16072](https://github.com/bitcoin/bitcoin/issues/16072).
The test file test/functional/feature_fee_estimation.py has also been updated to check this functionality.
ACKs for top commit:
meshcollider:
re-utACK ea31caf6b4
Tree-SHA512: 8f36153a07cbd552c5c13d11d9c6e987a7a555ea4cc83f2573c0c92dd97c706d90c30a7248671437c2f3a836d3272f8fad53d15a5fa6efaa0409ae8009b0a18d
43cd6b8af9 doc: add release notes for removal of the -deprecatedrpc=addresses flag (Michael Dietz)
2b1fdc2c6c refactor: minor styling, prefer snake case and same line if (Michael Dietz)
d64deac7b8 refactor: share logic between ScriptPubKeyToUniv and ScriptToUniv (Michael Dietz)
8721638daa rpc: remove deprecated addresses and reqSigs from rpc outputs (Michael Dietz)
Pull request description:
Resolves #21797 now that we've branched-off to v23 ("addresses" and "reqSigs" deprecated) "ExtractDestinations" should be removed.
`-deprecatedrpc=addresses` was initially added in this PR #20286 (which resolved the original issue #20102).
Some chunks of code and logic are no longer used/necessary with the removal of this, and therefore some minor refactoring is done in this PR as well (separated commits)
ACKs for top commit:
MarcoFalke:
re-ACK 43cd6b8af9🐉
meshcollider:
Code review ACK 43cd6b8af9
jonatack:
ACK 43cd6b8af9 per `git range-diff a9d0cec 92dc5e9 43cd6b8`, also rebased to latest master, debug built + quick re-review of each commit to bring back context, and ran tests locally at the final commit
Tree-SHA512: fba83495e396d3c06f0dcf49292f14f4aa6b68fa758f0503941fade1a6e7271cda8378e2734af1faea550d1b43c85a36c52ebcc9dec0732936f9233b4b97901c
03a5fe06bd qt: Keep InitExecutor in main gui thread (João Barbosa)
Pull request description:
The `InitExecutor` constructor moves the instance to a dedicated thread. This PR changes that by using `GUIUtil::ObjectInvoke` to run the relevant code in that thread.
A possible follow-up is to ditch the dedicated thread and use `QThreadPool` or even `QtConcurrent::run` (if we want to enable that).
ACKs for top commit:
hebasto:
ACK 03a5fe06bd, tested on Linux Mint 20.2 (Qt 5.12.8).
jarolrod:
ACK 03a5fe06bd
Tree-SHA512: 8b40300371d4c04efb9913600a06ba4899af0b5f50fdb26ea23ec751df6d3bd52f8bd693a5e8f6a94ebf3790583dc96c6070e6878d247dece62347aa9bd99031
This will provide better estimates which would be closer to fee paid in actual
transactions.
The test has also been changed such that when the node is restarted with a
high mempoolMinFee, the estimatesmartfee still returns a feeRate greater
than or equal to the mempoolMinFee, minRelayTxFee.(just like the feeRate of actual transactions)
7e3ee4cdd0 GUI: Ask user to unlock wallet before signing psbt (Samuel Dobson)
0f3acecf33 Add test that walletprocesspsbt requires unlocked wallet when signing (Samuel Dobson)
0e895212bb Ensure wallet is unlocked before signing in walletprocesspsbt (Samuel Dobson)
Pull request description:
If signing a PSBT, we need to ensure the wallet is unlocked.
Fixes #22874, fixes bitcoin-core/gui#312
ACKs for top commit:
achow101:
ACK 7e3ee4cdd0
lsilva01:
Code Review ACK 7e3ee4cdd0
benthecarman:
ACK 7e3ee4cdd0
Tree-SHA512: 6726a873582747900ab454ea21153a92be86808a4c1517dc2856b389876a2da9e8df1ffa9b567b6bd017038342c3544ecf5ca3c97744e7debe0a5ee65563687d
efcaefc7b5 test: Add remaining scenarios of 0 waste (rajarshimaitra)
Pull request description:
As per the [review club](https://bitcoincore.reviews/22009) discussion on #22009 , it was observed that there were other two fee scenarios in which selection waste could be zero.
These are:
- (LTF - Fee) == Change Cost
- (LTF - Fee) == Excess
Even though these are obvious by the definition of waste metric, adding tests for them can be helpful in explaining its behavior
to new readers of the code base, along with pinning the behavior for future.
This PR adds those two cases to waste calculation unit test.
Also let me know if I am missing more scenarios.
ACKs for top commit:
jonatack:
Tested re-ACK efcaefc7b5
achow101:
ACK efcaefc7b5
meshcollider:
ACK efcaefc7b5
Tree-SHA512: 13fe3e2c0ea7bb58d34e16c32908b84705130dec16382ff941e5e60ca5b379f9c5811b33f36c4c72d7a98cfbb6af2f196d0a69e96989afa4b9e49893eaadd7cb
