prisma-risk / tsoracle / 26255820347

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test: raise workspace coverage (#57)

* test(core): cover allocator predicates and pack panics

Adds tests for the previously-uncovered branches in `Allocator`:

- `try_on_leadership_gained` rejects a `committed_ceiling` past
  `PHYSICAL_MS_MAX` independently of `fence_floor`.
- `try_grant` rejects oversized `count` (`> LOGICAL_MAX + 1`).
- `would_grant` is now exercised across not-leader, invalid counts,
  within-window, exhausted, and the +1 advance-past-`PHYSICAL_MS_MAX`
  cases — `service::extend_window` relies on it returning false in
  every refuse case, and the predicate had no direct test coverage.
- `Allocator::default()` constructs in `NotLeader` state.

And for `Timestamp::pack`'s panicking variant:

- `#[should_panic]` tests pin the two `assert!` messages, mirroring
  the `try_pack` Err tests one-to-one.

* test(consensus): exercise trait dispatch and error formatting

`dummy_is_object_safe` only verified that `Dummy: ConsensusDriver`
type-checked as a trait object — the method bodies never ran, so
neither did the `LeaderState` derives or `thiserror::Error` impls on
`ConsensusError`.

Adds tests that:

- Invoke each `ConsensusDriver` method on the `Dummy` (empty stream,
  zero high-water, monotonic-advance returns the input) under
  `futures::executor::block_on` — no new tokio dev-dep needed.
- Confirm `LeaderState`'s `PartialEq` discriminates on payload, not
  variant tag (the documented basis for `watch::Sender`'s debounce).
- Format every `ConsensusError` variant so the `#[error("…")]`
  attributes are exercised end-to-end.

* test(openraft-toolkit): negative-path MemNetwork + Debug/Default

Three additions:

- `PartitionController::default()` is exercised so the `Default` impl
  has matching coverage to `new()`.
- `RocksdbLogStore`'s `Debug` impl is rendered (and verified equal
  after `Clone`) inside the existing `opens_empty_store_without_error`
  integration test — the formatter is part of the public surface but
  was previously nev... (continued)

371 of 379 new or added lines in 13 files covered. (97.89%)

6195 of 6440 relevant lines covered (96.2%)

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