iotaledger / iota / 27996229973

67%

Build Type

push

github

Committed by web-flow

Commit Message

upstream(iota-test-transaction-builder): add ensure_unique to vary tx digests (#11945)

## Description of change

Port of upstream MystenLabs/sui#26913.

Adds `TestTransactionBuilder::ensure_unique()` — a chainable method that
injects a random unused pure input so that two otherwise-identical
transactions (same sender, gas object and arguments) build to distinct
digests. `build()` is unchanged for callers that don't opt in, so tests
relying on stable digests are unaffected.

This is needed by benchmark workloads that repeatedly submit logically
identical transactions: when a submission fails with a transport error
mid-flight but the transaction has already committed, a later identical
build collides on the already-executed digest and trips an assertion.
`ensure_unique()` gives each build a distinct digest.

The upstream builder accumulates a programmable transaction builder and
calls `force_separate_pure`. Our `TestTransactionBuilder` builds
`TransactionData` directly, so the port instead appends a trailing
unused `Input::Pure` to the resulting programmable transaction — same
effect on the digest, execution unaffected.

## Links to any relevant issues

## How the change has been tested

- [x] Basic tests (linting, compilation, formatting, unit/integration
tests)
- [x] Patch-specific tests (correctness, functionality coverage)
- [x] I have added tests that prove my fix is effective or that my
feature works
- [x] I have checked that new and existing unit tests pass locally with
my changes

Coverage Stats

33 of 34 new or added lines in 1 file covered. (97.06%)

297 existing lines in 10 files now uncovered.

158368 of 234767 relevant lines covered (67.46%)

467695.36 hits per line